CademPVD

Software for the Mechanical Design of Process Equipment

TUTORIALS & HELP GUIDE

CADEM Software

Website: www.cadem.net

Email: software@cadem.net

Phone: +91-20-46 3000 36, +91-9370211312

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TIPS:

  1. You can view the videos of tutorials of the equipments in this help guide on our YouTube channel www.cadem.net/youtube open in new tab. The links to the videos are mentioned at the start of each tutorial.
  2. You can also view reports of the equipment on the links given at the start of each of equipment.
  3. A sample file covering various equipment models is provided for downloading on our website. For your ease of understanding, you can download and the review the contents of the file

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Index

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1) HOW TO DOWNLOAD?

1.1 You can download the software "CademPVD" from our website www.cadem.net open in new tab.

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1.2 For downloading the software, you will have to create an account by filling the registration form and registering with us (www.cadem.net/software/download) open in new tab.

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1.3 You will receive a Login ID and password on the email provided by you in the registration form.

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1.4 Once you are registered with us, you can use the login ID and password to download the software installation file at any time and any number of times.

1.5 In case you are already registered with us and have misplaced your password, you can use the Forgot Password link to recover your password.

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1.6 After you login, you will be redirected to a page where you can see available download links.

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1.7 Before purchasing our software products, you can try our products for your live design cases by obtaining a limited period evaluation license from us.

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2) INSTALLATION AND LICENSING

2.1 HOW TO INSTALL THE SOFTWARE?

You can download the CademPVD software setup file by clicking here and following the instructions given. (here: Download CademPVD)

After you download the software setup file from the above link, run it and complete installation process. Kindly do not change the software installation path.

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2.2 LICENSING

Once you have successfully installed CademPVD Software, you need to activate it. For this, run CademPVD (Double click on the shortcut on the DeskTop) and select the CademPVD activation method. We recommend the Online Activation Method.

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2.2.1 Online Licensing/Activation of CademPVD

Click on the Next button. This will open the customer information form, where you need to fill in your details. Your activation key will be emailed to you to the email ID provided by you in this form. Check the "I accept the terms and conditions" checkbox button, and then click on the Next button.

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Check your email for the activation key emailed to you. You can copy it from the email and then paste it in the software activation form. Click on the Next button.

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You will get a message "Activation Completed Successfully", that's it. Now you can start using CademPVD.

il2.1-3.jpg2.2.2 Offline Licensing/ Activation of CademPVD

Alternatively, you can also select ‘Activate Manually’ and click on the Next button.

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This will open the customer information form, where you need to fill in your details. Your license file will be emailed to you to the email ID provided in this form. Check the "I accept the terms and conditions" checkbox button, and then click on the ‘Generate Key File’ button.

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This will generate a key file, which needs to be emailed to us. A license file will be generated and emailed to you as soon as possible. Check your email for the license file emailed to you.

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2.3 Import License File

Once you will get license file, run the CademPVD(Double click on the shortcut which is on the desktop), close the Activation form by clicking on form close button (Please refer below image).

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Then go to "Help" menu => "Import License File" select the license file and click on Open button. That's it. Close software and open again. Now you can use CademPVD.

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2.4 RE-AUTHORIZATION/ RE-AUTHENTICATION OF LICENSE

CademPVD Software requires Renew/ Re-authorization of license periodically. The CademPVD software license expires by default after 30 days. On expiry of the license or any time before expiry one can update license (Renew/ Re-authorization/ Re-authentication). This will ensure reauthorization for a period of next 30 days or till validity of license period.

After expiry of the license a pop-up window depicting that need to Re-authorize/ Update license is shown.

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Click on Renew License button.

In certain cases, one gets the following window showing a message “Enter Product Key”, then enter product key which was sent to user by email while installation of CademPVD.

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Please Enter/ Insert Product Key and click on Renew License button.

After this process, you will get message “License re-authorized successfully”, please click on OK button.

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Now you are free to use the software and design equipments in CademPVD for the next 30 days without any interruptions.

2.5 SOFTWARE FOLDER ACCESS

Please ensure that the software folder on your computer as complete user rights as the software need to access, update and create files within that folder.

2.6 SOFTWARE REQUIREMENTS

2.6.1 MICROSOFT OFFICE (FOR COSTING AND EXPORT BOM)

You also need Microsoft office loaded on your computer. This is a prerequisite for quick costing, detailed costing and export BOM options in our software product to work.

2.6.2 TEAM VIEWER (FOR REMOTE DEMONSTRATION AND ASSISTANCE)

This Team Viewer software will assist us in providing remote demonstration of the software features. This team viewer software will also help us in providing remote assistance while you are using our software and have difficulty.

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3) THE SOFTWARE INTERFACE

3.1 THE SOFTWARE SCREENS

Main Menu

Before using the software, it is important to understand the various windows on the software screen and their purposes. In this software there are various areas on the screen and their locations & purposes are described as below.

3.1.1 Top menu bar – the Main Menu.

3.1.2 Left side vertical tool bar – Provides for selecting following:

3.1.2.1 Material specs or material data sets: Using this combo box one can apply entire set of materials appropriate for particular material group selection.

3.1.2.2 Pipe sizes and schedules: These set of combo boxes (drop down lists) helps in applying pipe NPS and schedule thickness for applicable items.

3.1.2.3 Flange codes, types and ratings: These set of combo boxes (drop down lists) helps in applying flange codes, ratings and flange types for various flange / bolted cover items.

3.1.2.4 Tube codes, tube sizes and gauges: These set of combo boxes (drop down lists) helps in applying Tube codes, tube sizes and gauges for various tube items.

When an item is selected, its details are displayed in the Properties Window. While in the property window, in case you want to assign say pipe size and schedule, you can select it from this left vertical tool bar. Please note that the contents of the above combo boxes are enabled only when they are appropriate for the item selected in the Project Explorer (Item List).

3.1.3 Project Explorer (Item List) – Shows various open projects and equipment inside each project. Each project can have one or more equipment. One can design individual equipment in a project or can design an entire project. The design menu provides various options for this purpose. One can also use short cut keys shown against each design menu option instead of using the mouse.

3.1.4 Properties Window (Item Properties) - When the user clicks on an equipment or an item inside the equipment listed in the Project Window, its properties are displayed in the Properties Window. User can change the values of the various item properties in this window. For instance when the user clicks on the equipment tag say "HE1", its properties are displayed in the "Property Window".

3.1.5 Output Window - This is the area wherein the software displays design reports / calculation documentation. After the design of the equipment is successfully completed, the user can press F9 key or select the menu option “Create Code Report” to display the design output for the selected item in the "Project Window".

3.1.6 Error & Warnings Window - This is an area wherein software displays various errors and warnings while designing. Based on the errors displayed, user can initiate appropriate corrective actions. Each error and/or warning in the Error & Warnings Window depicts the project name, the equipment name, the error code, error message and severity of the error. In case of server errors, they are displayed in red color. When the error is severe, the design process is stopped.

3.1.7 Tool strip window: The bottom side strip with icons is Tool Strip Window which enables quick addition of new items in to the current equipment.

The screen shot enclosed above shows the above described screen areas marked as 1, 2, 3 etc. respectively.

3.2 HOW TO CREATE A NEW PROJECT

The software provides concept of project wherein the user can define a project consisting of number of equipment. The user can open or create multiple number of such projects consisting of multiple equipment and work on them simultaneously. All the equipment defined in one project can be saved into a single project file, thus reducing the burden of tracking the model files on the hard drive.

The user has the option of designing one or all of the equipment in a single project or all equipment in all the projects with a single mouse click.

Following is a quick brief for how to define a new project using the software 'CademPVD'.

3.2.1 Start the program by clicking on ‘shortcut to ‘CademPVD’ on your computer’s desktop.

3.2.2 Now select File menu and click on New Project

File > New Project

New Project

3.2.3 New project "Project 1" will appear in the "Project Explorer" view.

Project Explorer

3.2.4 Click on the "Project 1" in the Project Explorer.

3.2.5 The Properties Window displays possible entries for 'Project 1'. As these entries are same for all the equipment in a given project, they are entered in this common location in the project properties. This saves repeated entry of this information for each equipment in the project. Now, let us fill in the details in the properties windows. Fill entry 'ABC Company Ltd' in the description field, 'Vapi Site' in the SiteDesc field, 'Refrigeration Plant' in the PlantDec field and 'Soap Plant' in the ProjectDesc field.

3.3 HOW TO CREATE AN EQUIPMENT

Once the user has created project, the user can add one or more equipment of various types in it. The 'Equipment' Menu at the top of the software screen lists various equipment that can be designed using this software.

Following is a quick brief to create or add new equipment to a Project in the software 'CademPVD'.

3.3.1 Click on the project in the Project Explorer to select it. This will ensure that the equipment would be added to the selected project.

select current project

3.3.2 Click on the "Equipment Menu" and select the equipment to add.

Equipment > Pressure Vessel

Pressure Vessel

3.3.3 Fill the appropriate details in the displayed dialog.

Add Pressure Vessel

3.3.4 Click dialog button OK.

3.3.5 The equipment will be added to the project list with auto generated equipment name. The generated equipment will be displayed in the "Project Explorer".

Gas filter

3.3.6 Now click on the new added equipment in the "Project Explorer". The major configuration details and dimensional properties for the equipment will appear in the "Properties Window".

Equipment details

3.4 UNDERSTANDING THE EQUIPMENT TREE IN PROJECT EXPLORER

After having created equipment in a new project as described in the earlier chapters, the equipment details are displayed in the "Project Explorer" in the form of tree structure. The certain entries in the tree are displayed in dark black colour. These dark entries are either major definitions or otherwise group entries.

Before we move further, it is important to understand the various parts of the displayed equipment tree contents.

3.4.1 Equipment Tag Entry: For instance the entry "Gas Filter" itself is a major definition entry, wherein the major configurational details or dimension details are defined.

Equipment details

3.4.2 Design Data: Under this entry generally there will be sub-trees for entering data for design information for various equipment chambers. In case of Pressure Vessel there is one pressure chamber only and the provision for entering its design pressure, temperature and other information available under the tree "Sh Design Data" meaning shell side design data.

Chamber Design

For Reactors with heating or cooling jacket and the provision for entering its design pressure, temperature and other information is available under "Jkt Design Data" meaning jacket design data. (A screen capture taken from some other equipment tree is displayed here below for reference.)

jacket side design

Similarly for heat exchanger equipment there will be entry "Ch Design Data" for entering channel or tube side design information. (A screen capture taken from some other equipment tree is displayed here below for reference.)

Ch Design Data

Each chamber’s design information contains sub-tree entries for "Pr & Temp (Operating)", "Pr & Temp (Design1)", "Pr & Temp (Hydro)". This is where user can enter pressure, temperature and other details under various conditions like operating, design1 and hydro test etc.

3.4.3 Wind & Seismic: Under the heading "Wind & Seismic", user can enter wind and seismic data pertaining to the equipment. This is a group entry and once your open out the tree, you can see sub-tree entries for "Wind [IS:875, 87]" and "Seismic [IS:1893, 02]".

The user can click on these sub-tree entries and update data pertaining to it by entering appropriate values in the "Properties Window".

In case user does not update any data pertaining to Wind and / or Seismic, a set of generally used default values are used in the design calculation.

wind load info

3.4.4 Expanding and collapsing sub-tree: Some items are preceded by a small box with - / + sign in it. This box can be used to either expand (display) the sub-tree entries in that item or to collapse (hide) them. This helps in the overall management of the tree length.

sub-tree

3.4.5 Material Specs: This group box has sub-tree entries that provide provisions to define various materials for the equipment under consideration. Depending on the equipment you may have any of the following entries:

Sub-Tree Node Equipment type Purpose
Main vessel All types of equipment Definition of materials for the main vessel / shell side of heat exchanger / shell side of jacketed & reactor vessels
Jacket side Jacketed Vessel, Reactor Definition of materials for jacket side of jacketed vessels & reactor vessels
Channel side Heat Exchanger Definition of materials for channel side heat exchangers
Shell connections All types of equipment Definition of materials for nozzle connections, pad type connections, manholes etc that are directly mounted on to the main vessel.
Jacket connections Jacketed Vessel, Reactor Definition of materials for nozzle connections, pad type connections, etc that are directly mounted on to the jacket of jacketed vessel or reactor.
Channel Connections Heat Exchanger Definition of materials for nozzle connections, pad type connections, etc that are directly mounted on to the channel side of heat exchanger.
Tube Bundle Heat Exchanger Definition of materials for tube bundle items, tube plate, and expansion bellows etc. in a heat exchanger.
Vessel Internals Mixing Vessels & Reactors Definition of materials for internal coil, baffles, internal flanges etc. mixing vessel, jacketed vessel or reactor.
Agitation System Mixing Vessels & Reactors Definition of materials for agitator system in mixing vessel or reactor.
simple Pressure Vessel

Material sub-tree for simple Pressure Vessel

Heat Exchanger

Material sub-tree for a Heat Exchanger

Jacketed Vessel

Material sub-tree for a Jacketed Vessel

3.4.6 Assembly: The group boxes below the "Material Specs" group box contain various vessel components in them. Each type of Assembly group box has sub-tree entries in them that form components for a particular pressure chamber or a group of items that constitute & form certain system by themselves. The various kinds of Assembly types present in particular equipment depend on the type of equipment. An indicative table is provided below for easy understanding of the concept.

Assembly Equipment type Purpose
Main vessel All types of equipment This is where the main vessel components are defined and listed for a pressure vessel. Please note that nozzles and other attachments are not listed in this assembly. All branch connections or nozzles are defined in Nozzle Assembly.
Jacket Jacketed Vessel, Reactor This is where the jacketing components are defined and listed for say a jacketed vessels or reactor vessels. All jacketing components independent of the type of jacket, like shell type jacket, limpet jacket, dimple jacket etc. are all listed in this assembly.
Channel Front Heat Exchanger Definition of Channel Front items are covered in this assembly.
Channel Rear All types of equipment Definition of Channel Rear items are covered in this assembly.
Tube Bundle Heat Exchanger Definition of Heat Exchanger Tube bundle items are covered in this assembly.
Support All types of equipment Definition of all equipment supporting items are provided in this assembly.
Agitator Mixing Vessels & Reactors Definition of all agitator system items are covered in this assembly.
Vessel Internals Mixing Vessels & Reactors Definition of all vessel internals such as spiral heating or cooling coil etc is covered in this assembly.
Accessories Mixing Vessels & Reactors Definition of all accessory items such as insulation, cladding, lifting lugs etc covered in this assembly.

The concept of Assembly type helps in working & management of software internals. It also helps for the software user to locate and update information quickly and easily.

3.4.7 Few samples snaps of certain assemblies are shown here below for your reference and understanding.

Main Shell Assembly & Nozzle Schedule Assembly

Sample View of Main Shell Assembly and a part of Nozzle Schedule Assembly

Main Shell, Jacket, Support and Agitator Assembly

Sample View of Main Shell, Jacket, Support and Agitator Assembly

Channel Front, Channel Rear and Bundle Assembly

Sample View of Channel Front, Channel Rear and Bundle Assembly

3.5 USING THE SOFTWARE

Before you start using the software, we suggest that you make yourself conversant with following aspects.

  1. HOW TO DOWN LOAD THE SOFTWARE "CademPVD".
  2. HOW TO INSTALL THE SOFTWARE.
  3. THE SOFTWARE SCREENS.
  4. HOW TO CREATE A NEW PROJECT.
  5. HOW TO CREATE EQUIPMENT.
  6. UNDERSTANDING THE EQUIPMENT TREE IN PROJECT EXPLORER

The information pertaining to the above issues has been specifically covered in this manual. Having read and understood the above aspects, you can now proceed to using the software.

As a part of USING THE SOFTWARE, we will perform the following actions:

  1. Open or create a new project.
  2. Add a Pressure Vessel and then design it – Refer to Tutorials in Chapter 4 & 5.
  3. Add a Heat Exchanger and then design it – Refer to Tutorials in Chapter 6 & 7.
  4. Add a Reactor and then design it – Refer to Tutorial in the Chapter 8.
  5. Add a API 650 Storage Tank and then design it – Refer to Tutorials in Chapter 9 & 10.
  6. Save the project.
  7. Close the project.

Let us start by creating a new project. For more information on creating a new project you can read "HOW TO CREATE A NEW PROJECT".

Once you have created a new project, you can proceed to "TUTORIAL 1".

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DO IT YOURSELF TUTORIALS

PRESSURE VESSELS

4) GAS FILTER TUTORIAL

Design Standard: ASME Section VIII Div. 1
Pressure & Temperature
Operating Design Units
Internal pressure 10 12 kg/cm2
External pressure 1.0546 1.0546 kg/cm2
Max. temperature 100 150 oC
Min. temperature 20 20 oC
Process media Compressed Gas -
Process density 10 kg/m3
Radiography & allowances Shell Head
Radiography Full Full -
Circ. efficiency 1 1 -
Long. efficiency 1 1 -
Corrosion allowance 3 mm
Polishing allowance 0 mm
Materials of construction
Shell SA-516-70 Plate
Head SA-516-70 Plate
Manhole / body flange SA-105 Frgs.
Nozzle SA-106-B Smls. pipe
Flange SA-105 Frgs.
Gasket CAF with suitable binder
Bolt SA-193-B7 Bolting
Stiffener SA-516-70 Plate
Reinforcement pad SA-516-70 Plate
Support IS-2062-A Plate
Anchor bolt Commercial CS bolt
Lifting lug IS-2062-A Plate
GAS FILTER

In this tutorial, we will add a simple pressure vessel. This pressure vessel has a top flat cover and a bottom dished end. The top cover is bolted type and is connected to the shell through top body flange. The pressure vessel is provided with lugs support and lifting lug.

Please refer to the above MDS for this equipment. Now let us add the equipment in the project by following the steps below.

4.1 First create a new project. Select File menu and click on New Project.

(Detailed description on CademPVD interface available in Chapter 3).

File > New Project

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4.2 Click on the project ‘ABC Company Ltd.’ in the Project Explorer to select it. This will ensure that the equipment would be added to the selected project.

4.3 Click on the ‘Equipment’ Menu and select the equipment to add. In this case, we want to add a pressure vessel.

Equipment > Pressure Vessel

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4.4 For the equipment as specified in the MDS, following are the primary details that need to be filled as displayed in dialog box.

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4.5 Click ‘OK’.

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4.6 The equipment will be added to the current selected project in the Project Explorer with equipment name “Gas Filter”. Under the entry “Gas Filter”, a tree list is generated, wherein various details for the equipment can be defined.

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4.7 It is important to understand the various parts of the equipment tree contents in the “Project Explorer”. In case you have not read “UNDERSTANDING THE EQUIPMENT TREE IN PROJECT EXPLORER”, we suggest you read that now (Refer Chapter 3, Para 3.4).

4.8 Click on “Gas Filter”, which by itself is a major definition entry, wherein the major configurational details or dimension details are defined. Update the contents in the Properties Window as shown here below.

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4.9 The next step is to input design data information. A simple pressure vessel like this one has only shell side design data. A pressure chamber’s design information contains sub-entries like “Pr & Temp (Operating)”, “Pr & Temp (Design1)”, “Pr & Temp (Hydro)” etc.

Gas Filter > Design Data > Sh Design Data > Pr & Temp (Operating)

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4.10 After completing “Pr & Temp (Operating)” now proceed to “Pr & Temp (Design1)”. Update the information as shown in the following screens.

Gas Filter > Design Data > Sh Design Data > Pr & Temp (Design1)

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4.11 The software automatically computes and considers the required hydrotest pressure in accordance with the code. If the user desires a higher hydrotest pressure, he can update it in “Pr & Temp (Hydro)” parameters as in the image below.

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4.12 The radiographic examination specified in the MDS is SPOT + T. So select the option Spot in the dropdown menu RTExtent for ‘Radiography’.

Gas Filter > Design Data > Sh Design Data > Radiography

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4.13 Fill the corrosion allowance as given in MDS as shown below.

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4.14 This process completes definition of design data information.

4.15 The next step is to apply materials of construction for various components. You can define materials of constructions for the various component types in common areas and thus save time required in defining materials for each individual component. The definition of materials is covered under the equipment’s sub-tree “Material Specs” in the “Project Explorer”.

4.16 Let us begin defining materials for the Main Vessel components. The steps for this are as under:

Gas Filter > Material Specs > Main Vessel > Material Spec. (Upper Left Corner) > 516GR70

The “Material Spec” combo box on the left side vertical menu strip lists predefined material specs or data sets.

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On selecting material set from Material Spec., suitable materials for parts such as body flange, shell, head, support, lifting lug etc. are automatically selected by the software. The user can edit materials for individual items after selecting a set form ‘Material Spec.’ The user can also define his own custom material set.

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Similarly, the material specifications for ‘Shell connections’ can be selected.

Gas Filter > Material Specs > Shell connections> Material Spec. (Upper Left Corner) > 516GR70

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4.17 This completes the material definitions. Up till now, we have defined the equipment configuration, its overall dimensions, design data, and materials for the various components.

4.18 While following the above procedure, you may have noticed that you have done minimum definitions or entered minimum inputs. The other entries have been left blank or empty and the software will select appropriate values for them.

4.19 At this stage, let us proceed to designing of the equipment. First you have to ensure that the equipment you want to design is the current equipment in case there are multiple equipment in the project. To make any equipment currently selected one, click on the equipment tag or any other item in its tree.

4.20 Now select sub-menu “Design Equipment” in the top menu “Design Model” to begin design of the equipment.

Gas Filter > Click on ‘Design Model’ > Design Equipment

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4.21 While the equipment is designed, any design warning or errors that occur are displayed in the “Errors & Warnings” window. The warnings are displayed in black colour and any severe errors displayed in red colour. In case of Warnings, the user can review them and take necessary corrective action, if required. While in case of Errors, the user has to take necessary corrective action for equipment design to proceed further.

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4.22 You can notice that there are certain warnings only and there are no errors displayed in the “Errors & Warnings” window. For the moment, let us ignore the warnings.

4.23 Let us proceed to see the design output for the top bolted cover item “Cover (Front)”. The steps to depict the design output for this item as shown in the following screen.

Gas Filter > Main Shell Assembly > Click On “Bolted Cover (Front)” > Create Report > Code Reports

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Thus, reports for various conditions have been generated as you can see in the image below.

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4.24 Similarly, the report for “Shell Flng (Front)” can be generated.

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4.25 The “Shell Flng (Front)” that we just designed shows following Bolt Dia. as 20 mm and no. of bolts as 52. Also our selection for the flange material is plate material.

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4.26 Now let us change flange configuration to forged SA 105 of type WNRF that should have M30 bolting.

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Similarly update the material for “Body Flange Cvr”.

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Now click on the “Shell Flng (Front)” and update the “Flange type” and “DesignMethod” information as indicated.

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Now let us proceed to setting the bolt size to M30.

Gas Filter > Main Shell Assembly > Click on “Bolt Flng (Front)” > In properties window, Geometry > click on “size” and select bolt size.

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4.27 Now select the sub-menu “Design Equipment” in the top menu “Design Model” to re-design the equipment and thereafter the check the “Shell Flng (Front)” design output.

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4.28 Having designed the overall equipment, we now proceed to the addition of nozzles for the equipment. The steps and the procedure for the same are depicted in the following capture screen shots.

Gas Filter > Right Click on “Nozzle Schedule Assembly” > select “Nozzle Table”

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4.29 After entering the details as shown in the above “Nozzle Schedule” dialog, click “OK” button to update the model.

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4.30 Now select sub-menu “Design Equipment” in the top menu “Design Model” to re-design the equipment.

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4.31 The “Errors & Warnings” window is displaying an error in red colour which is a severe error. The design cannot proceed further unless we rectify this error. The error has occurred in nozzle neck “N 03”, which says that the provided neck thickness is inadequate. To set this right, we need to follow the steps depicted in the following screen shots.

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And redesign the equipment.

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4.32 You can click on any item / object in the equipment and see its design by selecting sub-menu “Code Report” from the top menu “Create Report”. Click on “Gas Filter” and generate its report.

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4.33 You print its report by selecting sub-menu “Print Preview” from the top menu “File”.

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Congratulations for successfully completing first tutorial and having designed of the first equipment using “CademPVD”.

Before, we proceed further, it is important to register certain key features and important steps in the software.

  1. It is not important to fill data for all the properties of an object or item. You can fill minimum information that you feel is essential and the balance information will be suitably decided by the software. For instance, in “Gas Filter”, you need not fill both the ShOD (shell OD) and ShID (shell ID) information. You fill either the OD or ID and the software will evaluate the thickness, and evaluate the dimensions in accordance.
  2. When you click on any object or item that is displayed in the “Project Explorer”, its appropriate properties are displayed in the “Property Window”. Each numerical entry field for the properties of any object (item) is a calculator and you can feed numerical equation in it instead of direct numerical value.
  3. You can change between the unit systems (MKS / FPS / SI) dynamically by selecting sub-menu option in “View / Unit System” menu options. The user can input values in MKS system, then switch to FPS system and the generate design reports in it.

    For given example, current Unit system is MKS, now if you want change to PSI, then follow steps as given below:

    View > Unit System > Select ‘Set FPS’

    gf-pt3-1.jpg gf-pt3-2.jpg
  4. The “Gas Filter” equipment above has been provided with the items, “Lug Supports” and also “Lifting Lugs”. The “Lug Supports” object (item) appears in the sub-tree “Support Assembly”, and “Lifting Lugs” object (item) appears in the sub-tree “Accessories Assembly”. The software has automatically selected appropriate types and dimensional configurations for these objects (items). You can see their design output by clicking them and pressing F9 OR select menu options Create Reports -> Code Reports.
  5. The software has a very special feature of “Auto-scaling”. You can simply change, say the inside diameter or the length of the “Gas Filter” by entering their new values in the field, “ShID” and “ShLen” respectively. Thereafter, re-designing the equipment will automatically redesign all components, including supports and lifting lugs to meet the new requirements.
  6. You can export BOM to excel by just one click,

    Click on” Gas Filter” > Design Model > Export PRJ BOM2XLS > check excel sheet

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  7. You can view foundation loads on the equipment, by clicking on Gas Filter, and then clicking on the sub-menu ‘Code Reports’ from the Menu ‘ Create Reports’.

    Gas Filter > Code Reports> Find the tab

    gf-pt7-1.jpg gf-pt7-2.jpg

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5) LPG STORAGE TANK TUTORIAL

Design Standard: ASME Section VIII Div. 1
Pressure & Temperature
Operating Design Units
Internal pressure 10 14.5 kg/cm2
External pressure 1.0546 1.0546 kg/cm2
Max. temperature 55 75 oC
Min. temperature 20 -10 oC
Process media LPG -
Process density 470 kg/m3
Radiography & allowances Shell Head
Radiography Full Full -
Circ. efficiency 1 1 -
Long. efficiency 1 1 -
Corrosion allowance 3 mm
Polishing allowance 0 mm
Materials of construction
Shell SA-516-70 Plate
Head SA-516-70 Plate
Manhole / body flange SA-516-70 Plate
Nozzle SA-106-B Smls. pipe
Flange SA-105 Frgs.
Gasket CAF with suitable binder
Bolt SA-193-B7 Bolting
Stiffener SA-516-70 Plate
Reinforcement pad SA-516-70 Plate
Support IS-2062-A Plate
Anchor bolt Commercial CS bolt
Lifting lug IS-2062-A Plate
LPG STORAGE TANK

In this tutorial we will see how to design a simple horizontal LPG Storage Tank.

Please refer to the above MDS for this equipment. Now let us add the equipment in the project by following the steps below.

5.1 First create a new project as described in “HOW TO CREATE A NEW PROJECT” in Chapter 3, Para 3.2. You can also open the existing project in which you have stored while making Tutorial 1 and add this storage tank to the same project.

5.2 To begin with, if you are adding this equipment to an existing project, first open the project if it is not open.

5.3 Now click on the project bar to in the “Project Explorer” to make it current.

5.4 Now select sub-menu option “Pressure Vessel” available inside the top menu “Equipment”.

5.5 For the equipment as specified in the MDS, following are the appropriate details that need to be filled in the displayed dialog.

Please ensure that you select appropriate Code, Service, FrontEndType, RearEndType and Support.

Add Pressure Vessel

5.6 Click on dialog’s button OK.

5.7 The equipment will be added to the current selected project in the Project Explorer with equipment name “LPG Storage Tank”. If it is not visible in the “Project Explorer”, then click on the project bar to expand the tree. You can see that under the entry “LPG Storage Tank”, a tree list is generated, wherein various details for the equipment can be seen, defined and/or updated.

5.8 Before we move further, it is important to understand the various parts of the equipment tree contents in the “Project Explorer”. In case you have not read “UNDERSTANDING THE EQUIPMENT TREE IN PROJECT EXPLORER”, we suggest you read that now (Refer Chapter 3, Para 3.4).

5.9 Click on the entry “LPG Storage Tank” which by itself is a major definition entry, wherein the major configurational details or dimension details are defined. Update the contents in the Properties Window as shown here below.

LPG STORAGE TANK

5.10 The next step is to input design data information. For inputting this, locate the tree entry “Design Datas” and then locate “Sh Design Data” entry in it. A simple pressure vessel like this one has only shell side design data. A pressure chamber’s design information contains sub-entries like “Pr & Temp (Operating)”, “Pr & Temp (Design1)”, “Pr & Temp (Hydro)” etc. First enter the operating design data by entering the information as shown in the below screen.

Pr & Temp

5.11 Having updated operating design information in “Pr & Temp (Operating)” now you can proceed to updating of design data information in “Pr & Temp (Design1)”. Update the information as shown in the following screens.

Pr & Temp

5.12 The radiographic examination specified in the MDS is FULL. Click on “Radiography” and update the entries as shown here below.

Radiography

5.13 Update the allowances information as shown here under.

Allowances info

5.14 This process completes definition of design data information.

5.15 The next step is to apply materials of construction for various components. You can define materials of constructions for the various component types in common areas and thus save time required in defining materials for each individual component. The definition of materials is covered under the equipment’s sub-tree “Material Specs” in the “Project Explorer”.

5.16 Let us begin defining materials for the Main Vessel components. The steps for this are as under: The “Material Spec” combo box on the left side vertical menu strip lists predefined material specs or data sets. The software user can update, add modify or change these data sets. You can learn more on this at later stages.

Select spec

5.17 The next step is to define the materials for nozzles or the connections. The steps for this are as under:

Material spec

5.18 This completes the material definitions. In following the entire above process, we have defined the equipment configuration, its overall dimensions, have defined design data (like pressures, temperatures etc. under various conditions, radiography, allowances etc), and have defined materials for the various components.

5.19 While following the above procedure, you may have noticed that you have done minimum definitions or entered minimum inputs. The other entries have been left blank or empty and the software will select appropriate values for them.

5.20 At this stage, let us proceed to designing of the equipment. First you have to ensure that the equipment you want to design is the current equipment in case there are multiple equipment in the project. To make any equipment currently selected one, click on the equipment tag or any other item in its tree.

5.21 Now select sub-menu “Design Equipment” in the top menu “Design Model” to begin design of the equipment.

Design equipment

5.22 While the equipment is designed, any design warning or errors that occur are displayed in the “Errors & Warnings” window. The warnings are displayed in black colour and any severe errors displayed in red colour. In case of Warnings, the user can review them and take necessary corrective action, if required. While in case of Errors, the user has to take necessary corrective action for equipment design to proceed further.

Error & Warnings

5.23 You can notice that there are certain warnings only and there are no errors displayed in the “Errors & Warnings” window. For the moment let us ignore the warnings.

5.24 The next logical step is to see the design output. Let us proceed to see the design output for the left side dished end item “Dished End (Front)”. For this select sub-menu option “Code Reports” from top menu “Create Reports”.

Design calculation

The design output is displayed in an area called “Out Window” which is a tabbed page. The top of each “Output Window” has tab entries and on clicking on each tab, you can see output for that particular design condition.

5.25 Now click on the “Main Shell” object and generate report for it by selecting sub-menu “Code Report” from the top menu “Create Report”. This will display design report for the “Main Shell” object. You can use the right side scroll bar in the “Output Window” wind to scroll the report and see its more details.

5.26 Now click on the “Wind [IS:875, 87]” object and generate report for it by selecting sub-menu “Code Report” from the top menu “Create Report”. This will display design report for the “Wind [IS:875, 87]”, which shows wind load calculations for the equipment. You can use the right side scroll bar in the “Output Window” wind to scroll the report and see its more details.

5.27 Similarly you can click on “Seismic [IS:1893, 02]” object and generate output report for it.

5.28 Now go to “Support Assembly” tree node and select “Saddle Support” option under it. Create design report for it and view it in the “Output Window”. Click on “Saddle Support [Corroded][Design1]" tab at the top of “Output Window”. You can scroll and review the report for its contents. In the first part of the report, the support components have been checked for their adequacy to with stand equipment loads and wind loads. When you scroll it further down, you will see the second part the report, wherein the adequacy of the components for equipment loads and seismic loads is checked for. Further down this report is the third part wherein “Zick Analysis” of the saddle is done to ensure that the localized stresses developed due supporting arrangement are within limits. Please note that entire process from selection of saddle to checking its adequacy are done automatically, thus saving user’s valuable time.

5.29 Having designed the overall equipment, we now proceed to addition of nozzles for the equipment. The steps and the procedure for the same are depicted in the following capture screen shots.

Nozzle tableNozzle table

5.30 After entering the details as shown in the above “Nozzle Schedule” dialog, click “OK” button to update the model.

5.31 Now select sub-menu “Design Equipment” in the top menu “Design Model” to re-design the equipment.

5.32 You can click on any item / object in the equipment and see its design by selecting sub-menu “Code Report” from the top menu “Create Report”. Don’t forget to see the report for pad type man hole nozzle “N 03” and its cover design.

5.33 Now to see the best feature of the software, click on “LPG Storage Tank” entry in the equipment tree in the “Project Explorer”. Change the dimensions of the equipment as shown here below.

LPG Storage Tank

5.34 Now re-design the equipment. The entire equipment including the shell, dished ends, supports, lifting lugs are rescaled and the effect of this change is also reflected in nozzle neck and reinforcement calculations.

5.35 This completes this tutorial. Hope you enjoyed the features our software “CademPVD”.

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6) HEAT EXCHANGERS TUTORIAL - NEN TYPE

Design Standard: ASME Section VIII Div. 1
Pressure & Temperature Shell Side Tube Side
Operating Design Operating Design Units
Internal pressure 3.46 21 11.5 17.5 kg/cm2
External pressure - - - - kg/cm2
Max. temperature -9.2 120 3 120 oC
Min. temperature -9.2 -15 -6 -15 oC
Process media Propylene Ethylene Glycol -
Process density 558 1040 kg/m3
Radiography & allowances Shell Head Shell Head Units
Radiography Full Full Full Full -
Circ. efficiency 1 1 1 1 -
Long. efficiency 1 1 1 1 -
Corrosion allowance 3 3 mm
Polishing allowance - - mm
Materials of construction
Shell side Tube side
Shell / channel shell SA-516-70 Plate SA-516-70 Plate
Head SA-516-70 Plate SA-516-70 Plate
Manhole / body flange SA-516-70 Plate SA-516-70 Plate
Nozzle SA-106-B Smls. pipe SA-106-B Smls. pipe
Flange SA-105 Frgs. SA-105 Frgs.
Gasket Spiral metal wound CAF filled (S.S.) Spiral metal wound CAF filled (S.S.)
Bolt SA-193-B7 Bolting SA-193-B7 Bolting
Stiffener SA-516-70 Plate SA-516-70 Plate
Reinforcement pad SA-516-70 Plate SA-516-70 Plate
Support & lifting lug IS-2062-A Plate
Anchor bolt Commercial CS bolt
Tube - SA-179 Smls. tube
Tubesheet - SA-516-70 Plate
Tube Data Baffle data
Pattern Triangular Entrance span 950
Outside dia. 19.05 mm Span between baffles 950
Length 6000 mm Exit span 1050
Thickness 2.108 mm Reference from From T.S. face
No. off tubes 3120 Type Single segmental
Pitch 25.4 mm Orientation Horz. cut
Passes 6 % Cut 25
HEAT EXCHANGERS

In this tutorial we will see how to design a simple horizontal NEN Type Heat Exchanger.

Please refer to the above MDS for this equipment. Now let us add the equipment in the project by following the steps below.

6.1 First create a new project as described in “HOW TO CREATE A NEW PROJECT” in Chapter 3, Para 3.2. You can also open an existing project in which you have stored the earlier tutorials and add this heat exchanger to the same project.

6.2 To begin with, if you are adding this equipment to an existing project, first open the project if it is not open.

6.3 Now click on the project bar in the “Project Explorer” to make it current.

6.4 Now select sub-menu option “Heat Exchanger” available inside the top menu “Equipment”.

6.5 For the equipment as specified in the MDS, following are the appropriate details that need to be filled in the displayed dialog.

6.6 Please ensure that you select appropriate Code, TemaClass, Service, FrontEnd, MainShell, RearEnd and Support.

HEAT EXCHANGERS

6.7 Click on dialog’s button OK.

6.8 The equipment will be added to the current selected project in the Project Explorer with equipment name “NEN Type HE”. If it is not visible in the “Project Explorer”, then click on the project bar to expand the tree. You can see that under the entry “NEN Type HE”, a tree list is generated, wherein various details for the equipment can be seen, defined and/or updated.

6.9 Before we move further, it is important to understand the various parts of the equipment tree contents in the “Project Explorer”. In case you have not read “UNDERSTANDING THE EQUIPMENT TREE IN PROJECT EXPLORER”, we suggest you read that now (Refer to Chapter 3, Para 3.4).

6.10 Click on the entry “NEN Type HE” which by itself is a major definition entry, wherein the major configurational details or dimension details are defined. Update the contents in the Properties Window as shown here below.

HEAT EXCHANGERS DATA

6.11 The next step is to input design data information. For inputting this, locate the tree entry “Design Datas” and then locate “Sh Design Data” entry in it. For Heat Exchangers one has to enter shell side & channel side design data. Each side design information contains sub-entries like “Pr & Temp (Operating)”, “Pr & Temp (Design1)”, “Pr & Temp (Hydro)” etc. First enter the shell side operating and design data by entering the information as shown in the below screens.

DATA

6.12 Having updated operating design information in “Pr & Temp (Operating)” now you can proceed to updating of design data information in “Pr & Temp (Design1)”. Update the information as shown in the following screens.

DATA

6.13 The radiographic examination specified in the MDS is FULL. Click on “Radiography” and update the entries as shown here below.

Radiography

6.14 Update the allowances information as shown here under.

Radiography

6.15 This process completes definition of shell side design data information.

6.16 Now proceed to defining channel side (tube side) design for which you will have to update in the sub-tree entries in “Ch Design Data”. The following image snaps depict the updating process.

Operating Pressure, Temp and other data

Update Operating Pressure, Temp and other data

Design Pressure, Temp and other data

Update Design Pressure, Temp and other data

Radiography data

Update Radiography data

Corrosion Allowance data

Update Corrosion Allowance data

6.17 The next step is to apply materials of construction for various components. You can define materials of constructions for the various component types in common areas and thus save time required in defining materials for each individual component. The definition of materials is covered under the equipment’s sub-tree “Material Specs” in the “Project Explorer”. First select material for “Main Vessel” components.

Material spec

6.18 Having selected Material Spec for the Main Vessel components, we proceed to updating “Ext Gasket” material in to “Spiral wound SS” material as per our MDS. This is done by following the steps in image shown below. Thus, one can fine tune the selections that are automatically filled by selection of “Material Specs”.

Spiral wound SS

6.19 Following the steps as indicated above, one can select materials for other items in the equipment by updating various sub-tree entries listed in the “Material Specs”.

Material Specs

6.20 This completes the material definitions. In following the entire above process, we have defined the equipment configuration, its overall dimensions, have defined design data (like pressures, temperatures etc. under various conditions, radiography, allowances etc), and have defined materials for the various components.

6.21 While following the above procedure, you may have noticed that you have done minimum definitions or entered minimum inputs. The other entries have been left blank or empty and the software will select appropriate values for them.

6.22 At this stage, let us proceed to designing of the equipment. First you have to ensure that the equipment you want to design is the current equipment in case there are multiple equipment in the project. To make any equipment currently selected one, click on the equipment tag or any other item in its tree.

6.23 Now select sub-menu “Design Equipment” in the top menu “Design Model” to begin design of the equipment.

6.24 While the equipment is designed, any design warning or errors that occur are displayed in the “Errors & Warnings” window. The warnings are displayed in black colour and any severe errors are displayed in red colour. In case of Warnings, the user can review them and take necessary corrective action, if required. While in case of Errors, the user has to take necessary corrective action for equipment design to proceed further.

Warnings & Erro

6.25 You can notice that there are warnings for some objects (items) and an error in “Tubesheet (Front)” object. For the moment let us ignore the warnings. And concentrate on errors depicted in the red colour.

6.26 Following steps will illustrate how you can still view details and reports of all components except error containing component compare components before and after editing containing component.

6.27 Now click on the “Main Shell” object and generate report for it by selecting sub-menu “Code Report” from the top menu “Create Report”. This will display design report for the “Main Shell” object. You can use the right side scroll bar in the “Output Window” wind to scroll the report and see its more details.

Design of shell

The design outputs are displayed in an area called “Out Window” which is a tabbed page. The top of each “Output Window” has tab entries and on clicking on each tab, you can see output for that particular design condition. You can also notice that the required nominal thickness of shell is 18 mm.

6.28 Similarly you can click on the “Ch Shell (Front)” object and generate report for it by selecting sub-menu “Code Report” from the top menu “Create Report” and study its design output. The report shows that the required nominal thickness is also 16 mm.

6.29 You can now click on “Tubesheet (Front)” and create design reports for it. Since, there was error in designing this item; it would not be possible for the software to generate design reports for it. While designing of fixed tubesheets, when there is failure due to excessive stresses in integral shell and / or integral channel shell, the options available to the user are listed in UHX-13.5.11. According to this clause, the design shall be reconsidered by using one or a combination of the following three options:

6.29.1 Increase the tubesheet thickness.

6.29.2 Increase the integral shell and/or channel thickness. It is permitted to increase the thickness adjacent to the tubesheet only.

6.29.3 Perform the elastic-plastic calculation procedure as defined in UHX-13.7.

The options in “Setting – Tubesheet” allow the user to preset any of the above three options or a combination of these options, and the program will accordingly redesign and evaluate Tubesheet thickness, shell thickness and / or channel thickness.

6.30 Click on the sub-tree "Settings" in the equipment node trees in "Project Explorer". Here one can update the setting pertaining to tubesheet designing under "Setting-Tubesheet".

In cases where failure in shell or channel integral with tube sheet due to excessive stresses in shell or channel, selecting "True" for "AutoAdjustBase" allows the program to automatically adjust (increase) the shell and for channel shell thickness. Thus ensuring the adequacy of the entire tubesheet joint configuration is achieved.

6.31 Now let us resolve error pertaining to failure due to stresses at tubesheet. Let us perform change in the "Setting-Tubesheet" as depicted in the following image snap.

Setting – Tubesheet

6.32 The software performs Elastic-Plastic analysis of the tubesheet joint configuration when "PrfrmElstkPlstkCalc" setting set "True". This will automatically force the software to do additional calculations. Having done this setting, you can now proceed to re-designing of the heat exchanger by selecting sub-menu "Design Equipment" in the top menu “Design Model”.

6.33 After re-designing, you can review the calculation reports tubesheet, shell and channel thickness and note the results.

6.34 Now go to “Support Assembly” tree node and select sub-tree “Saddle Support” under it. Create design report for it and view it in the “Output Window”. Click on “Saddle Support [Corroded][Design1]" tab at the top of “Output Window”. You can scroll and review the report for its contents. In the first part of the report, the support components have been checked for their adequacy to with stand equipment loads and wind loads. When you scroll it further down, you will see the second part the report, wherein the adequacy of the components for equipment loads and seismic loads is checked for. Further down this report is the third part wherein “Zick Analysis” of the saddle is done to ensure that the localized stresses developed due supporting arrangement are within limits. Please note that entire process from selection of saddle to checking its adequacy are done automatically, thus saving user’s valuable time.

6.35 Having designed the overall equipment, we now proceed to addition nozzles for the equipment as shown in earlier Tutorials.

6.36 This completes this tutorial. Hope you enjoyed the features our software “CademPVD”.

Page - 9 - End

7) HEAT EXCHANGERS TUTORIAL - NEM TYPE (MODIFIED)

In this tutorial we will see how to design a horizontal NEM Type Heat Exchanger with different shell thickness adjacent to the tubesheets.

Please refer to the above MDS for this equipment. Now let us add the equipment in the project by following the steps below.

7.1 First create a new project as described in “HOW TO CREATE A NEW PROJECT” in Chapter 3, Para 3.2. You can also open existing project in which you have stored the earlier tutorials and add this heat exchanger to the same project.

7.2 To begin with, if you adding this equipment to an existing project, first open the project if it is not open.

7.3 Now click on the project bar to in the “Project Explorer” to make it current.

7.4 Now select sub-menu option “Heat Exchanger” available inside the top menu “Equipment”.

7.5 For the equipment as specified in the MDS, following are the appropriate details that need to be filled in the displayed dialog. Please ensure that you select appropriate Code, TemaClass, Service, FrontEnd, MainShell, RearEnd and Support and other details. The mode important is ‘MultiShell’ selection which should be ‘true’. Also ensure that ‘TemaClass’ selection is set to ‘R’.

HEAT EXCHANGERS

After you fill the details as shown in the above dialog, click OK button.

7.6 Now follow the steps exact steps in Paras 6.8 to 6.20 in Chapter 6.

7.7 Before, you proceed to designing of the equipment; we need to do finer modifications to certain objects (items) in the model. The “Main Shell Assembly” shows three shell items namely “Main (Front)”, “Main Shell” and “Main (Rear)”. The tubesheet design will modify the items “Main (Front)” and “Main (Rear)” only during the check for Tubesheet joint design adequacy. This may change the thickness of these to small shell sections adjacent to the tubesheets leaving the central large piece “Main Shell” untouched. The image snaps below show the requisite modifications. Please note that the overall shell length is again maintained at 6000 mm.

Main front Main shell Main rear

7.8 Click on the sub-tree “Settings” in the equipment node tress in “Project Explorer”. Thereafter, update the setting pertaining to tubesheet designing under “Setting – Tubesheet” as shown in the image snap shown below.

Setting – Tubesheet

7.9 Design the equipment and check the results for the various components.

7.10 This completes this tutorial. Hope you enjoyed the features our software “CademPVD”.

Page - 10 - End

8) REACTION VESSEL TUTORIAL

Design Standard: ASME Section VIII Div. 1
Pressure & Temperature Shell Side Jacket Side
Operating Design Operating Design Units
Internal pressure 6 8 4 5 kg/cm2
External pressure 1.0546 1.0546 1.0546 1.0546 kg/cm2
Max. temperature 120 180 150 180 oC
Min. temperature 20 10 20 10 oC
Process media CHEM-1 Steam -
Process density 980 1.5 kg/m3
Radiography & allowances Shell Head Shell Head Units
Radiography Spot Full Nil Full -
Circ. efficiency 1 1 1 1 -
Long. efficiency 1 1 1 1 -
Corrosion allowance - - mm
Materials of construction
Shell side Jacket side
Shell / Jacket shell SA-240-316 Plate SA-240-304 Plate
Head SA-240-316 Plate SA-240-304 Plate
Manhole / body flange SA-182-F316 Frgs. -
Nozzle SA-312-TP316 Smls.pipe SA-312-TP304 Smls.pipe
Flange SA-182-F316 Frgs. SA-182-F304 Frgs.
Gasket Spiral metal wound CAF filled (S.S.) Spiral metal wound CAF filled (S.S.)
Bolt SA-193-B7 Bolting SA-193-B7 Bolting
Stiffener SA-240-316 Plate SA-240-304 Plate
Reinforcement pad SA-240-316 Plate SA-240-304 Plate
Support & lifting lug IS-2062-A Plate
Anchor bolt Commercial CS bolt
Jacket closure - SA-516-70 Plate
Agitator Shaft Data Blade data
Power 20 HP No. off blades / hub 1
Duty Heavy Radius 800 mm
R.P.M. 100 Width 50 mm
Material 18/8 Cr-Ni steel Angle 45o
Shaft type Intermidate housing Thickness 16 mm
Daly usage 8 Hours
Expected life 4 Years
Allowable defflection 0.5 mm (at seal)
rv.jpg

In this tutorial we will see how to design a Reaction Vessel with an Agitator Shaft. This reaction vessel has dishes at the top and bottom ends. The jacketing is of plain shell type, partially covering the main shell and extending on to the bottom dished end. It has an agitator, with say 20 HP power and the agitator shaft RPM is 100. All the components in contact with the internal process liquid are of SS 316 and the jacketing is of SS 304.

Please refer to the above MDS for this equipment. Now let us add the equipment in the project by following the steps below.

8.1 First create a new project. Select File menu and click on New Project.

(Detailed description on CademPVD interface available in Chapter 3).

File > New Project

rv1-1.jpg rv1-2.jpg rv1-3.jpg

8.2 Click on the project ‘ABC Company Ltd.’ in the Project Explorer to select it. This will ensure that the equipment would be added to the selected project.

8.3 Click on the ‘Equipment’ Menu and select the equipment to add. In this case, we want to add a reaction vessel.

Equipment > Reaction Vessel

rv3-1.jpg rv3-2.jpg

The field entries, “LifeYears” and “HrsInDay” are the expected working years and the daily hours of operations respectively. These two inputs together determine the million number of revolutions to which the shaft supporting bearings are subjected. These revolutions along with the loads, are used in the appropriate selection of the bearings.

We are designing a shaft with a single impeller and hence, the field entry “NoImplrs” is set to 1.

Consider the field entry, “Propped”. In case the shaft is provided with an additional guiding bush support near the bottom end, this field should be set to true. The rest of the entries in this dialog are self explanatory. Now, click on dialog’s button OK.

8.4 The equipment will be added to the current selected project in the Project Explorer with equipment name “Reactor R101”. Under the entry “Reactor R101”, a tree list is generated, wherein various details for the equipment can be seen, defined and / or updated. Now, update the contents in the Properties Window.

rv4.jpg

8.5 The next step is inputting design data information. For this, locate the tree entry “Design Data” and then locate “Shell Design Data” entry in it. For Reactor Vessel, one has to enter shell side & jacket side design data. Details for various conditions can be filled in the corresponding places for operating, design and hydrotest conditions. First enter the shell side operating data.

rv5.jpg

8.6 After updating information of the shell side operating conditions in “Pr & Temp (Operating)”, you can now proceed to update information of the design conditions in “Pr & Temp (Design1)”.

rv6.jpg

8.7 We are not inputting any hydrotest pressure. The software will calculate it on its own in accordance with the appropriate code clause.

8.8 Click on Radiography. We will leave all the entries as ‘Default’, so that the software will choose appropriate radiography types as per code requirement.

rv8.jpg

8.9 Click on Allowances. We are keeping corrosion allowance as zero, so there is no updating of data required here.

rv9.jpg

8.10 Now proceed to defining jacket side design data, for which you will have to update the sub-tree entries in “Jacket Design Data”. First update the jacket operating condition data as shown.

rv10.jpg

8.11 Now, update jacket design condition data as shown here below:

rv11.jpg

8.12 NClick on Radiography. We will leave all the entries as ‘Default’, so that the software will choose appropriate radiography types as per code requirement.

rv12.jpg

8.13 Click on Allowances. We are keeping corrosion allowance as zero, so there is no updating of data required here.

rv13.jpg

8.14 The next step is to apply materials of construction for various components. You can define materials of constructions for the various component types in common areas and thus save time required in defining materials for each individual component. The definition of materials is covered under the equipment’s sub-tree “Material Specs” in the “Project Explorer”.

8.15 Let us begin defining materials for the Main Vessel components. For this select “Material Spec” combo box on the left side vertical menu strip and select from the list of predefined material specs or the data sets. Select material SS316 for ‘Main Vessel’.

rv15.jpg

8.16 Let us change external gasket type to ‘Spiral metal wound CAF filled (S.S.)’.

rv16.jpg

8.17 Let us select materials for the jacket side. Select material spec SS304 for the Jacket Side.

rv17.jpg

8.18 Similarly, you can now proceed to select materials for Shell Connections, Jacket Connections and Agitator System. Choose Material Specs SS316, SS304 and SS316 for Shell Connections, Jacket Connections and Agitator System respectively.

rv18-1.jpg rv18-2.jpg rv18-3.jpg

8.19 This completes the material definition process.

Thus, in following the entire above process, we have defined the equipment configuration, its overall dimensions, design data like pressures, temperatures under various conditions, radiography, allowances and materials for the various components.

8.20 While following the above procedure, you may have noticed that you have done minimum definitions or entered minimum inputs. The other entries have been left blank or empty and the software will select appropriate values for them.

8.21 At this stage, let us proceed to designing of the equipment. First, you have to ensure that the equipment you want to design is the current equipment in case there are multiple equipment in the project. To make any equipment the currently selected one, click on the equipment tag or any other item in its tree.

8.22 Now select sub-menu “Design Equipment” in the top menu “Design Model” to begin design of the equipment.

rv22.jpg

8.23 While the equipment is designed, any design warning or errors that occur are displayed in the “Errors & Warnings” window. The warnings are displayed in black colour and any severe errors displayed in red colour. In case of Warnings, the user can review them and take necessary corrective action, if required. While in case of Errors, the user has to take necessary corrective action for equipment design to proceed further.

You can notice that there are certain warnings only and there are no errors displayed in the “Errors & Warnings” window.

rv23.jpg

8.24 The next logical step is to see the design output. Let us proceed to see the design output for the top dish end “Dished End (Front)”.

rv24-1.jpg rv24-2.jpg

The design output is displayed in an area called “Output Window” which is a tabbed page. The top of each “Output Window” has tab entries and on clicking on each tab, you can see output for that particular design condition.

8.25 Now click on the “Shell Flng (Front)” object and generate report for it by selecting sub-menu “Code Report” from the top menu “Create Report” or press key F9. This will display design report for the “Shell Flng (Front)” object.

rv25-1.jpg rv25-2.jpg

8.26 Now let us change flange configuration to forged “SA 182 F 316” of type fabricated WNR.

8.27 This is a two step process. The first involves updating the flange material for forging.

rv27.jpg

8.28 The second step involves updating the flange type to Fabricated WNRF.

rv28.jpg

8.29 Similarly update the Flange Type for the item “Shell Flng (Front)”. Thus both the body flange types have been updated to “Fabricated WN”.

rv29.jpg

8.30 SNow select sub-menu “Design Equipment” in the top menu “Design Model” to re-design the equipment.

rv30.jpg

8.31 Thereafter check the “Shell Flange (Front)” design output.

rv31-1.jpg rv31-2.jpg

8.32 Now click on “Shaft” item tree node in the sub-tree “Agitation Assembly” and generate report for it by selecting sub-menu “Code Report” from the top menu “Create Report”. This will display design report for the “Shaft” object.

rv32-1.jpg rv32-2.jpg

8.33 Similarly, you select other items in this equipment tree and review their design report. The reactor equipment above has been provided with “Lug Supports” and also “Lifting Lugs” items. The “Lug Supports” object (item) appears in the sub-tree “Support Assembly” and “Lifting Lugs” object (item) appears in the sub-tree “Accessories Assembly”. The software has automatically selected appropriate types and dimensional configurations for these objects (items). You can see their design output.

8.34 Last thing of importance, is to note the contents reflected design report of the “Reactor R101” tree node. Click on the equipment tree node “Reactor R101” and generate its design report, scroll and watch the contents of [Uncorroded][Design1] condition. It reflects various inputs, overall equipment dimensions and weight parameters, design data information, materials selected and the item wise bill of quantities. Now scroll and select “Foundation Loads” tabbed page of this Output Window. This will display foundation load details that can be transferred to civil department for foundation designing.

8.35 The procedure for addition of nozzles or connections, their flange etc. is same as shown in the earlier tutorials and hence it is not replicated here. You may visit other tutorial for more information on this.

Page - 11 - End

9) API 650 STORAGE TANK

AST 23 MTRS ID X 9.6 MTRS HT. TUTORIAL

Design Standard API-650 12th Edition, March 2013
Appendices Used E, F
Tank Inside Diameter 23.0 m
Shell Height 9.6 m
Process name / Process Density Gas oil / 780 kg/m3
Max Liquid Level – Operating / Design 8500 / 8500 mm
Pressure – Operating / Design 0.006 kg/cm2 (60 mm WC) / 0.007 kg/cm2 (70 mm WC)
Temperature – Operating / Design Min. 10 ºC, Max.40 ºC / Min. 10 ºC / Max. 65 ºC
Tank Joint Efficiency 0.85
Radiography ‘Spot + T’
Corrosion allowance 3 mm
Wind Code / Basic Wind Velocity IS 875, 1984 / 180 kph
Seismic Code / Site specific acceleration ASCE-07, 05 / Sp = 0.1
Roof Live Load 1 KPa
MOC – Tank Plate / Structure A-516 GR. 70 / IS 2062 GR. A ( A 36 )
STORAGE TANK

In this tutorial we will add an Aboveground Storage Tank (AST) as per API 650, 13 code. This AST has top conical roof which is supported by roof support structure.

Please refer to the previous page for the MDS for this equipment. Now let us add the equipment that is storage tank in the project by following the steps below.

9.1 First create a new project as described in “HOW TO CREATE A NEW PROJECT” in Chapter 3, Para 3.2.

9.2 Click on the project in the Project Explorer to select it. This will ensure that the equipment would be added to the selected project.

9.3 Click on the “Equipment Menu” and select “Storage Tank”.

STORAGE TANK

9.4 For the equipment as specified in the MDS, following are the appropriate details that need to be filled in the displayed dialog.

Enter data

9.5 The software uses plate width field ‘PltWd’ and the number of section field ‘NoSects’ for dividing the tank shell in to sections optimally. The recommended number of sections in to which the tank shell shall be divided ranges from a minimum of 3 to a maximum of 10. In case of large tank diameters, more the number of sections, one gets optimum tank design and shell thicknesses. However, a large number of shell sections can lead to too many different shell thickness plates which generally lead to difficulty in procurement and related losses. It would be appropriate to select tank sections as a multiple of plate width so as to avoid extra plate cutting, welding and /or wastage of the material.

9.6 The above dialog has ‘Geometry - Roof Support’ area wherein one can select RoofSupp type. The software supports three types of roof supporting arrangements. They are -

  1. Self Supported
  2. supported by Columns, Girders and Rafters
  3. supported by truss type Roof Frame.

Small diameter tanks, say up 10 mts diameter can be provided with self supported roof that is without any additional supporting structure. In case of large diameter tanks, one needs to provide roof structure with supports. Supported roof can be with Columns, Girders and Rafters, with columns extending from the tank bottom base plate and holding the tank structure. In some cases, one can provide roof structure in the form of roof frames or the truss. These Truss type Roof Frames do not have intermediate column supports that extend from the tank bottom base plate. They have the ends of truss mounted on to the shell plate near the top end of the tank shell and are without any internal column supports. This option in particular is recommended for tanks with internal floating roof arrangement.

9.7 To begin with, let us select ‘Self supported’ Roof Support option.

9.8 Click on dialog’s button OK.

9.9 The equipment will be added to the current selected project in the Project Explorer with equipment name “AST 23.0 m Dia x 9.6 m Ht”. Under the entry “AST 23.0 m Dia x 9.6 m Ht”, a tree list is generated, wherein various details for the equipment can be seen, defined and/or updated.

9.10 Before we move further, it is important to understand the various parts of the equipment tree contents in the “Project Explorer”. In case you have not read “UNDERSTANDING THE EQUIPMENT TREE IN PROJECT EXPLORER”, we suggest you read that now (Refer to Chapter 3, Para 3.4)

9.11 Click on the entry “AST 23.0 m Dia x 9.6 m Ht” which by itself is a major definition entry, wherein the major configurational details or dimension details are defined and can be modified later if need.

AST 23.0 m Dia x 9.6 m Ht

9.12 The next step is to input design data information. For inputting this, locate the tree entry “Design Datas” and then locate “Sh Design Data” entry in it. A simple equipment like this one has only shell side design data. A storage tank’s design information contains sub-entries like “Pr & Temp (Operating)”, “Pr & Temp (Design1)”, “Pr & Temp (Hydro)” etc. First enter the operating design data by entering the information as shown in the below screen.

Enter data

Please note that the pressure units are kgf/sq.cm (g). In the ‘PrInt’ field, you can enter operating internal Water Column pressure. In this example, it is 60 mm WC which can be entered as 60 / 10000 = 0.006 kgf/sq.cm (g).

9.13 Having updated operating design information in “Pr & Temp (Operating)” now you can proceed to updating of design data information in “Pr & Temp (Design1)”. Update the information as shown in the following screen.

Design condition

9.14 The radiographic examination specified in the MDS is SPOT + T. Since the software provides these as default entry values, no updating in “Radiography” is required.

9.15 Update the allowances information as shown here under.

Allowances

9.16 This process completes definition of design data information.

9.17 Now let us define the applicable wind load details. For this click on ‘Wind[IS:875, 87]’ tab in the tree and update the wind speed as indicated in the properties dialog.

Fill in basic wind

9.18 Now let us define the applicable Seismic parameters for the tank. Since the entire seismic design procedure in the current API 650 code for storage tank is based on ASCE-07, 2005 code, let us first modify the applicable seismic design code. For this right click on the Seismic [IS:1893, 84] tree entry and from the pop-up menu select ASCE-07, 2005 code.

select ASCE-07, 2005

9.19 Having selected appropriate Seismic Code, now we can specify site specific seismic parameters. Since in our application, the site is non-ASCE and hence we select value for ‘ASCE_Site’ to false. This automatically changes the contents of the Properties Window, hides few unwanted parameters and enables certain applicable parameters.

select data

9.20 In the same Property Window page, now enter site specific spectral acceleration of 0.1 as indicated in the trailing snap. This entry completes our wind and seismic parameter definitions.

Enter site specific spectral acceleration

9.21 The next step is to apply materials of construction for various components. You can define materials of constructions for the various component types in common areas and thus save time required in defining materials for each individual component. The definition of materials is covered under the equipment’s sub-tree “Material Specs” in the “Project Explorer”.

9.22 Let us begin defining materials for the Tank components. The steps for this are as under:

Main vessel

The “Material Speccombo box on the left side vertical menu strip lists predefined material specs or data sets. The software user can update, add modify or change these data sets. You can learn more on this at later stages.

Material specs

9.23 The next step is to define the materials for nozzles or the connections. The steps for this are as under:

Shell connections

9.24 This completes the material definitions. In following the entire above process, we have defined the equipment configuration, its overall dimensions, have defined design data (like pressures, temperatures etc. under various conditions, radiography, allowances etc), and have defined materials for the various components.

9.25 In various the above steps & procedure, you may have noticed that you have done minimum definitions or entered minimum inputs. The other entries have been left blank or empty and the software will select appropriate values for them.

9.26 At this stage, let us proceed to designing of the equipment. First you have to ensure that the equipment you want to design is the current equipment in case there are multiple equipments in the project. To make any equipment currently selected one, click on the equipment tag or any other item in its tree.

9.27 Now select sub-menu “Design Equipment” in the top menu “Design Model” to begin design of the equipment.

Design equipment

9.28 While the equipment is designed, any design warning or errors that occur are displayed in the “Errors & Warnings” window. The warnings are in displayed in black colour and any severe errors displayed in red colour. In case of Warnings, the user can review them and take necessary corrective action, if required. While in case of severe errors, the user has to take necessary corrective action for equipment design to proceed further.

Warnings & Errors

9.29 You can notice that there are certain warnings and one sever error displayed in the “Errors & Warnings” window. For the moment let us ignore the warnings.

9.30 The Storage Tank is a large diameter storage tank and API code calculation lead to thickness in excess of 16 mm for the cone roof. The API 650 code restricts cone roof thickness to 16 mm and recommends structurally supported roof in cases where 16 mm is exceeded. Thus this tank cannot have self supported cone roof and therefore needs roof support structure.

9.31 Now the user has two options and they are 1) to provide ‘Columns, Girders and Rafter’ support wherein there are internal columns supported from the tank bottom and 2) to provide ‘Roof Truss’ wherein the roof is supported by truss frame with the ends of truss mounted on to the shell plate near the top end of the shell and is without any internal column supports.

9.32 Let us add Roof Support made of ‘Roof Truss’ without intermediate supports, then one needs to follow simple procedure outlined here. Click on the “AST 23.0 m Dia x 9.6 m Ht” item in the Item List in the ‘Project Explorer’ window. The ‘Properties Window’ has ‘Geometry - Roof Support’ area wherein one will select value as “Truss Frame” in the combo box ‘Roof Truss’.

Roof truss

9.33 Click again on the “AST 23.0 m Dia x 9.6 m Ht” item and then press key “Control + R” on the keyboard or select sub-menu ‘Regenerate’ from the ‘Equipment Menu’.

9.34 The regeneration process will automatically regenerate the equipment tree and in the process add the ‘Roof Frame’ item in the equipment tree in ‘Roof Assembly’ displayed in the ‘Project Explorer’. The ‘Roof Framing’ item has no sub-items. The important entry in the ‘Roof Framing’ item is the estimated weight of the framing truss. In case the user does not input this, the software has the capability to automatically estimate frame weight. The truss designing process as such is not covered in the API 650 code and requires specialized treatment. The current version of this software limits itself to estimating the overall weight and there after using the same for evaluating various tank design aspects like tank overall weight, seismic loads, wind loads, foundation, and uplifts calculations etc. The design of the Roof Support Truss will have to done in other specialized softwares such as ‘STAAD’.

9.35 Now, redesign the tank by selecting sub-menu ‘Design Equipment’ in the menu ‘Design Model’.

9.36 In the "Errors and Warnings”, a new error "Tank is subjected to uplift, needs anchoring” appears.

Warnings & Errors

9.37 Since the tank requires anchoring, let us now add anchoring arrangement for the tank. The steps to add anchoring are indicated in the following snap.

Lug support

9.38 After the Anchoring item is added to the tank, now re-design the tank. In certain cases, Annular Plate may be essential. Once can add Annular Plate by first selecting “Base Plate” in the “Tank Bottom Assembly” and then right click the mouse to display a pop-up menu. From the displayed pop-up menu select “Annular Plate” submenu item.

9.39 The next logical step is to see the design output. Let us proceed to see the design output for the top “Cone (Roof)”. The steps to depict the design output for this item are as shown in the following image snaps.

Design calculation

The design output is displayed in an area called “Out Window” which is a tabbed page. The top of each “Output Window” has tab entries and on clicking on each tab, you can see output for that particular design condition.

9.40 Now click on the “Shell 01” object and generate report for it by selecting sub-menu “Code Report” from the top menu “Create Report”. This will display design report for the “Shell 01” object. You can use the right side scroll bar in the “Output Window” wind to scroll the report and see its more details.

9.41 The design output for any item can be seen after clicking on the item and then selecting ‘F9’ key. The output is displayed in Output Window.

9.42 You can select ‘AST 23.0 m Dia x 9.6 m Ht’ from the “Project Explorer” window and press ‘F9’ key and thereafter scrutinize the contents of the ‘Output Window’. We suggest you to scroll the entire contents in this window.

9.43 In similar fashion one can review the output of say ‘Wind [IS:875, 87]’ or say ‘Seismic [ASCE 07, 05]’ entries in the Project Explorer. The steps to see the output are simple. First click on the item whose report you would want to review and then press ‘F9’ key.

9.44 Having designed the overall equipment, we now proceed to addition of the nozzles for the equipment. Kindly refer to the procedure explained in FAQ (Chapter 6, Para 6.1).

Page - 12 - End

10) API 650 STORAGE TANK

AST 41.85 MTRS ID X 15.155 MTRS HT TUTORIAL

Design Standard API-650 12th Edition, March 2013
Appendices Used E, F
Tank Inside Diameter 41.850 m
Shell Height 15.155 m
Process name / Process Density Gas oil / 780 kg/m3
Max Liquid Level – Operating / Design 13655 / 14155 mm
Pressure – Operating / Design 0.006 kg/cm2 (60 mm WC) / 0.007 kg/cm2 (70 mm WC)
Temperature – Operating / Design Min. 15 ºC, Max.40 ºC / Min. 10 ºC / Max. 65 ºC
Tank Joint Efficiency 0.85
Radiography ‘Spot + T’
Corrosion allowance 3 mm
Wind Code / Basic Wind Velocity IS 875, 1984 / 180 kph
Seismic Code / Site specific acceleration ASCE-07, 05 / Sp = 0.1
Roof Live Load 1 KPa
MOC – Tank Plate / Structure A-516 GR. 70 / IS 2062 GR. A ( A 36 )
Storage Tank

In this tutorial we will add an Aboveground Storage Tank (AST) as per API 650, 13 code. This AST has top conical roof which is supported by roof support structure.

Please refer to the previous page for the MDS for this equipment. Now let us add the equipment, which is storage tank in the project by following the steps below.

10.1 First create a new project as described in “HOW TO CREATE A NEW PROJECT” in Chapter 3, Para 3.2.

10.2 Click on the project in the Project Explorer to select it. This will ensure that the equipment would be added to the selected project.

10.3 Click on the “Equipment Menu” and select “Storage Tank”.

Storage Tank

10.4 For the equipment as specified in the MDS, following are the appropriate details that need to be filled in the displayed dialog.

Select self supported

10.5 The software uses plate width field ‘PltWd’ and the number of section field ‘NoSects’ for dividing the tank shell in to sections optimally. The recommended number of sections in to which the tank shell shall be divided ranges from a minimum of 3 to a maximum of 10. In case of large tank diameters, more the number of sections, one gets optimum tank design and shell thicknesses. However, a large number of shell sections can lead to too many different thickness plates which generally lead to difficulty in procurement and related losses. It would be appropriate to select tank sections as a multiple of plate width so as to avoid extra plate cutting, welding and /or wastage of the material.

10.6 The above dialog has ‘Geometry - Roof Support’ area wherein one can select RoofSupp type. The software supports three types of roof supporting arrangements. They are 1) Self Supported 2) supported by Columns, Girders and Rafters 3) supported by truss type Roof Frame. Small diameter tanks, say up 10 mts diameter can be provided with self supported roof that is without any additional supporting structure. In case of large diameter tanks, one needs to provide roof structure with supports. Supported roof can be with Columns, Girders and Rafters, with columns extending from the tank bottom base plate and holding the tank structure. In some cases, one can provide roof structure in the form of roof frames or the truss. These Truss type Roof Frames do not have intermediate column supports that extend from the tank bottom base plate. They have the ends of truss mounted on to the shell plate near the top end of the tank shell and are without any internal column supports. This option in particular is recommended for tanks with internal floating roof arrangement.

10.7 To begin with, let us select ‘Self supported’ Roof Support option.

10.8 Click on dialog’s button OK.

10.9 The equipment will be added to the current selected project in the Project Explorer with equipment name “AST 41.85 m Dia x 15.155 m Ht”. Under the entry “AST 41.85 m Dia x 15.155 m Ht”, a tree list is generated, wherein various details for the equipment can be seen, defined and/or updated.

10.10 Before we move further, it is important to understand the various parts of the equipment tree contents in the “Project Explorer”. In case you have not read “UNDERSTANDING THE EQUIPMENT TREE IN PROJECT EXPLORER”, we suggest you read that now (Refer Chapter 3, Para 3.4).

10.11 Click on the entry “AST 41.85 m Dia x 15.155 m Ht” which by itself is a major definition entry, wherein the major configurational details or dimension details are defined and can be modified later if needed.

AST 41.85 m Dia x 15.155 m Ht

10.12 The next step is to input design data information. For inputting this, locate the tree entry “Design Datas” and then locate “Sh Design Data” entry in it. A simple equipment like this one has only shell side design data. A storage tank’s design information contains sub-entries like “Pr & Temp (Operating)”, “Pr & Temp (Design1)”, “Pr & Temp (Hydro)” etc. First enter the operating design data by entering the information as shown in the below screen.

Fill in operating condition

Please note that the pressure units are kgf/sq.cm (g). In the ‘PrInt’ field, you can enter operating internal Water Column pressure. In this example, it is 60 mm WC which can be entered as 60 / 10000 = 0.006 kgf/sq.cm (g).

10.13 Having updated operating design information in “Pr & Temp (Operating)” now you can proceed to updating of design data information in “Pr & Temp (Design1)”. Update the information as shown in the following screen.

Enter design condition data

10.14 The radiographic examination specified in the MDS is SPOT + T. Since the software provides these as default entry values, no updating in “Radiography” is required.

10.15 Update the allowances information as shown here under.

Allowances information

10.16 This process completes definition of design data information.

10.17 Now let us define the applicable wind load details. For this click on ‘Wind[IS:875, 87]’ tab in the tree and update the wind speed as indicated in the properties dialog.

Enter basic wind speed

10.18 Now let us define the applicable Seismic parameters for the tank. Since the entire seismic design procedure in the current API 650 code for storage tank is based on ASCE-07, 2005 code, let us first modify the applicable seismic design code. For this right click on the Seismic [IS:1893, 84] tree entry and from the pop-up menu select ASCE-07, 2005 code.

Select data

10.19 Having selected appropriate Seismic Code, now we can specify site specific seismic parameters. Since in our application, the site is non-ASCE and hence we select value for ‘ASCE_Site’ to false. This automatically changes the contents of the Properties Window, hides few unwanted parameters and enables certain applicable parameters.

Select data

10.20 In the same Property Window page, now enter site specific spectral acceleration of 0.1 as indicated in the trailing snap. This entry completes our wind and seismic parameter definitions.

Enter site specific spectral acceleration

10.21 The next step is to apply materials of construction for various components. You can define materials of constructions for the various component types in common areas and thus save time required in defining materials for each individual component. The definition of materials is covered under the equipment’s sub-tree “Material Specs” in the “Project Explorer”.

10.22 Let us begin defining materials for the Tank components. The steps for this are as under:

Entries

The “Material Spec” combo box on the left side vertical menu strip lists predefined material specs or data sets. The software user can update, add modify or change these data sets. You can learn more on this at later stages.

10.23 The next step is to define the materials for nozzles or the connections. The steps for this are as under:

Materials for nozzles

10.24 This completes the material definitions. In following the entire above process, we have defined the equipment configuration, its overall dimensions, have defined design data (like pressures, temperatures etc. under various conditions, radiography, allowances etc), and have defined materials for the various components.

10.25 While following the above procedure, you may have noticed that you have done minimum definitions or entered minimum inputs. The other entries have been left blank or empty and the software will select appropriate values for them.

10.26 At this stage, let us proceed to designing of the equipment. First you have to ensure that the equipment you want to design is the current equipment in case there are multiple equipments in the project. To make any equipment currently selected one, click on the equipment tag or any other item in its tree.

10.27 Now select sub-menu “Design Equipment” in the top menu “Design Model” to begin design of the equipment.

Design equipment

10.28 While the equipment is designed, any design warning or errors that occur are displayed in the “Errors & Warnings” window. The warnings are in displayed in black colour and any severe errors displayed in red colour. In case of Warnings, the user can review them and take necessary corrective action, if required. While in case of severe errors, the user has to take necessary corrective action for equipment design to proceed further.

Warnings & Errors

10.29 You can notice that there are certain warnings and one sever error displayed in the “Errors & Warnings” window. For the moment let us ignore the warnings.

10.30 The Storage Tank is a large diameter storage tank and API code calculation lead to thickness in excess of 16 mm for the cone roof. The API 650 code restricts cone roof thickness to 16 mm and recommends structurally supported roof in cases where 16 mm is exceeds. Thus this tank cannot have self supported cone roof and therefore needs roof support structure.

10.31 Now the user has two options and they are 1) to provide ‘Columns, Girders and Rafter’ support wherein there are internal columns supported from the tank bottom and 2) to provide ‘Roof Truss’ wherein the roof is supported by truss frame with the ends of truss mounted on to the shell plate near the top end of the shell and is without any internal column supports.

10.32 Let us add Roof Support made of ‘Columns, Girders and Rafters’ to this tank. Click on the “AST 41.85 m Dia x 15.155 m Ht” item in the ‘Project Explorer’ window. The ‘Properties Window’ has ‘Geometry - Roof Support’ area wherein we will select value as “Columns, Girders and Rafters” in the combo box ‘RoofSupp’.

10.33 Further, just below this ‘RoofSupp’, we will update the details as indicated in the dialog here under.

Update roof support geometry

The parameters ‘CentralPolygon’, ‘RafterLen’ and ‘MaxRftrSpan’ help in automatic generation and distribution of these items by the software, thus requiring minimum user inputs.

10.34 After inputting the above details, click on the equipment name “AST 41.85 m Dia x 15.155 m Ht” and press key “Control + R” on the keyboard or select sub-menu ‘Regenerate’ from the ‘Equipment menu’.

10.35 The regeneration process with automatically regenerate the equipment items and also update equipment tree. In this process it adds the necessary roof structure like Columns, Girders and Rafters in the equipment tree displayed in the ‘Project Explorer’. The ‘Roof Framing’ item along with sub-items will be displayed as shown in the dialog here under.

Roof Framing

10.36 Now click on the first column item, the “Central Column” and update its description to "Central Column – (10 Sch 30)”. The description part is appended with the size of the column pipe for ease in identification and understanding. Now update the ‘Geometry – Shape’ to ‘Pipe Section’ and accordingly fill the OD and thickness of the pipe. In case the user does not update the ‘Length’ field, the software will automatically estimate the length of the column.

Pipe Section

10.37 Similarly update the other column details along with their dimensions.

10.38 Next, update the Girder and Rafter Details. This involves updating their description with size appended to it, then selecting the ‘Geometry – Shape’ and then updating the section dimensions.

Geometry – Shape

The above dialog shows one typical entry for a selected Girder. You have to update other Girder details on similar lines. The sequence of girder listing is from centre to outward towards tank shell. Similarly update the other girder details along with their dimensions. You can try using ‘Edit -> Copy’ and then ‘Edit -> Match Property’ menu options in the Edit Menu, which can save time in re-entering data.

Update description, shape & Shape Geometry

The above dialog shows one typical entry for a selected Rafter. You have to update other Rafter details on similar lines. The sequence of Rafter listing is from centre to outward towards tank shell. Similarly update the other rafter details along with their dimensions. Here too you can have the option of using ‘Edit -> Copy’ and then ‘Edit -> Match Property’ menu options in the Edit Menu, which can save time in re-entering data.

10.39 Now let us proceed to re-designing of the equipment. Ensure that the equipment you want to design is the current equipment, then select sub-menu “Design Equipment” in the top menu “Design Model” to begin design of the equipment.

10.40 An error is shown in the error wind indicating need of Wind Girders on Shell 02.

Warnings & Errors

10.41 At this point it is important to understand that the software automatically adds stiffener items for each individual shell section. These items in reality are not meaningful unless appropriate dimensions are input for them. One can update dimensions for the stiffener items one by one as design progresses and errors are shown by the software.

10.42 Let us now update details of stiffener ‘Stfnr 02’ on the tank shell ‘Shell 02’.

Select Stiffener shape Stiffener Dimension

10.43 The next logical step is to re-design and then see the design output. Let us proceed to see the design output for the top “Cone (Roof)”. The steps to depict the design output for this item are as shown in the following image snaps.

Create Report

The design output is displayed in an area called “Out Window” which is a tabbed page. The top of each “Output Window” has tab entries and on clicking on each tab, you can see output for that particular design condition.

10.44 Now click on the “Shell 01” object and generate report for it by selecting sub-menu “Code Report” from the top menu “Create Report”. This will display design report for the “Shell 01” object. You can use the right side scroll bar in the “Output Window” wind to scroll the report and see its more details.

10.45 The design output for any item can be seen after clicking on the item and then selecting ‘F9’ key. The output is displayed in the Output Window.

10.46 Now click on any of the Column or Girder or Rafter item and then press ‘F9’ key. The design output for the selected item is displayed in the Output Window.

10.47 You can select ‘AST 41.85 m Dia x 15.155 m Ht’ from the “Project Explorer” wind and press ‘F9’ key and thereafter scrutinize the contents of the ‘Output Window’. We suggest you to scroll the entire contents in this window.

10.48 In similar fashion one can review the output of say ‘Wind [IS:875, 87]’ or say ‘Seismic [ASCE 07, 05]’ entries in the Project Explorer. The steps to see the output are simple. First click on the item whose report you would want to review and then press ‘F9’ key.

10.49 In case one decides to provide structural ‘Roof Truss’ without intermediate supports, then one needs to follow simple procedure outlined here. Click on the “AST 41.85 m Dia x 15.155 m Ht” item in the Item List in the ‘Project Explorer’ window. The ‘Properties Window’ has ‘Geometry - Roof Support’ area wherein one will select value as “Truss Frame” in the combo box ‘RoofSupp’.

10.50 Click again on the “AST 41.85 m Dia x 15.155 m Ht” item and then press key “Control + R” on the keyboard or select sub-menu ‘Regenerate’ from the ‘Equipment menu’.

10.51 The regeneration process will automatically regenerate the equipment tree and in the process add the ‘Roof Frame’ item in the equipment tree in ‘Roof Assembly’ displayed in the ‘Project Explorer’. The ‘Roof Framing’ item has no sub-items. The important entry in the ‘Roof Framing’ item is the estimated weight of the framing truss. In case the user does not input this, the software has the capability to automatically estimate frame weight. The truss designing process as such is not covered in the API 650 code and requires specialized treatment. The current version of this software limits itself to estimating the overall weight and there after using the same for evaluating various tank design aspects like tank overall weight, seismic loads, wind loads, foundation, and uplifts calculations etc. The design of the Roof Support Truss similar to the one indicated in the figure below will have to done in other specialized software such as ‘STAAD’.

Roof framing

10.52 Now, redesign the tank by selecting sub-menu ‘Design Equipment’ in the menu ‘Design Model’.

10.53 Having designed the overall equipment, we now proceed to addition of the nozzles for the equipment. Kindly refer to the procedure explained in FAQ (Chapter 6, Para 6.1).

Page - 13 - End

11) CHIMNEY

Design Standard: ASME Section VIII Div. 1
Pressure & Temperature
Operating Design Units
Internal pressure 0.1 0.2 kg/cm2
External pressure 0 0 kg/cm2
Max. temperature 80 100 oC
Min. temperature 20 20 oC
Process media Flue gases -
Process density 1.2 kg/m3
Radiography & allowances Shell Head
Radiography Nil Nil -
Circ. efficiency 0.7 0.7 -
Long. efficiency 0.7 0.7 -
Corrosion allowance 2 mm
Polishing allowance 0 mm
Materials of construction
Cylindrical Shell SA-516-70 Plate
Conical transition SA-516-70 Plate
Manhole / body flange SA-516-70 Plate
Nozzle SA-106-B Smls. pipe
Flange SA-105 Frgs.
Bolt SA-193-B7 Bolting
Stiffener SA-516-70 Plate
Reinforcement pad SA-516-70 Plate
Support IS-2062-A Plate
Anchor bolt Commercial CS bolt
Lifting lug IS-2062-A Plate

In this tutorial we will see how to design a simple Chimney.

Please refer to the above MDS for this equipment. Now let us add the equipment in the project by following the steps below.

11.1 First create a new project as described in "HOW TO CREATE A NEW PROJECT" in Chapter 3, Para 3.2. You can also open the existing project in which you have stored while making Tutorial 1 and add this c to the same project.

11.2 To begin with, if you are adding this equipment to an existing project, first open the project if it is not open. Otherwise open a new project or create a new one.

11.3 Now click on the project bar in the "Project Explorer" to make it current.

11.4 Now select sub-menu option “Chimney” available inside the top menu "Equipment".

Select Chimney

11.5 For the equipment as specified in the MDS, following are the appropriate details that need to be filled in the displayed dialog.

Please ensure that you select appropriate Code, Service, IDTop, IDBottom, Cyl.length, total length, cylindrical section and Support.

Fill the details

11.6 Click on dialog’s button OK.

11.7 The equipment will be added to the current selected project in the Project Explorer with equipment name "Chimney". If it is not visible in the "Project Explorer", then click on the project bar to expand the tree. You can see that under the entry "Chimney", a tree list is generated, wherein various details for the equipment can be seen, defined and/or updated.

11.8 Before we move further, it is important to understand the various parts of the equipment tree contents in the "Project Explorer". In case you have not read "UNDERSTANDING THE EQUIPMENT TREE IN PROJECT EXPLORER", we suggest you read that now (Refer Chapter 3, Para 3.4).

11.9 Click on the entry "Chimney" which by itself is a major definition entry, wherein the major configurational details or dimension details are defined. Update the contents in the Properties Window as shown here above.

11.10 The next step is to input design data information. For inputting this, locate the tree entry "Design Datas" and then locate "Sh Design Data" entry in it. A simple chimney like this one has only shell side design data. A pressure chamber’s design information contains sub-entries like "Pr & Temp (Operating)”, “Pr & Temp (Design1)”, “Pr & Temp (Hydro)" etc. First enter the operating design data by entering the information as shown in the below screen.

Pr & Temp

11.11 Having updated operating design information in "Pr & Temp (Operating)" now you can proceed to updating of design data information in "Pr & Temp (Design1)". Update the information as shown in the following screens.

Temp Max

11.12 The radiographic examination specified in the MDS is FULL or SPOT+T. Click on "Radiography" & update the entries by making all the values to Nil as there is rarely a requirement of radiography for this equipment.

11.13 Update the allowances information as shown here under.

Allowances

11.14 This process completes definition of design data information.

11.15 Wind & Seismic inputs are most important inputs as they govern the design of “Chimney”. Under the heading "Wind & Seismic", user can enter wind and seismic data pertaining to the equipment. This is a group entry and once your open out the tree, you can see sub-tree entries for "Wind [IS:875, 87]" and "Seismic [IS:1893, 02]".

The user can click on these sub-tree entries and update data pertaining to it by entering appropriate values permissible for the location of equipment installation in the "Properties Window".

In case user does not update any data pertaining to Wind and / or Seismic, a set of generally used default values are used in the design calculation.

Wind Speed

11.16 The next step is to apply materials of construction for various components. You can define materials of constructions for the various component types in common areas and thus save time required in defining materials for each individual component. The definition of materials is covered under the equipment’s sub-tree "Material Specs" in the "Project Explorer".

11.17 Let us begin defining materials for the Main Vessel components. The steps for this are as under:

The "Material Spec" combo box on the left side vertical menu strip lists predefined material specs or data sets. The software user can update, add modify or change these data sets. You can learn more on this at later stages. Particularly for Gasket, select if specifically, req. or remove (Ctrl+A & delete) in ExtGasket box.

Select Material ExtGasket

11.18 The next step is to define the materials for nozzles or the connections. The steps for this are as under:

Sell Connections Automatically filled

11.19 This completes the material definitions. In following the entire above process, we have defined the equipment configuration, its overall dimensions, have defined design data (like pressures, temperatures etc. under various conditions, radiography, allowances etc.), and have defined materials for the various components.

11.20 While following the above procedure, you may have noticed that you have done minimum definitions or entered minimum inputs. The other entries have been left blank or empty and the software will select appropriate values for them.

11.21 At this stage, let us proceed to designing of the equipment. First you have to ensure that the equipment you want to design is the current equipment in case there are multiple equipments in the project. To make any equipment currently selected one, click on the equipment tag or any other item in its tree.

11.22 Now select sub-menu "Design Equipment" in the top menu "Design Model" to begin design of the equipment.

Design Equipment

11.23 While the equipment is designed, any design warning or errors that occur are displayed in the "Errors & Warnings" window. The warnings are in displayed in black colour and any severe errors displayed in red colour. In case of Warnings, the user can review them and take necessary corrective action, if required. While in case of severe errors, the user has to take necessary corrective action for equipment design to proceed further.

Warnings & Errors

11.24 You can notice that there are certain/no warnings and there are no errors displayed in the "Errors & Warnings" window. For the moment let us ignore the warnings.

11.25 The next logical step is to see the design output. Let us proceed to see the design output for the left side cylindrical section item "Shell 2". For this select sub-menu option "Code Reports" from top menu "Create Reports".

Code Report Design

The design output is displayed in an area called "Out Window" which is a tabbed page. The top of each "Output Window" has tab entries and on clicking on each tab, you can see output for that particular design condition.

11.26 Now click on the "Trans 1" object and generate report for it by selecting sub-menu "Code Report" from the top menu "Create Report". This will display design report for the "Trans 1" object. You can use the right side scroll bar in the "Output Window" wind to scroll the report and see its more details.

11.27 Now click on the "Wind [IS: 875, 87]" object and generate report for it by selecting sub-menu "Code Report" from the top menu "Create Report". This will display design report for the "Wind [IS: 875, 87]", which shows wind load calculations for the equipment. You can use the right side scroll bar in the "Output Window" wind to scroll the report and see its more details.

11.28 Similarly, you can click on "Seismic [IS: 1893, 02]" object and generate output report for it.

11.29 This completes the Chimney tutorial. Hope you enjoyed the features our software "CademPVD".

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12) REACTOR HEAT TRANSFER

General Information: - Units
Duty Cooling
Shell I.D. 1650 mm
Shell length 2000 mm
Shell thickness 8 mm
Agitation Turbine
Ag Dia. 650 mm
RPM 80
Jkt Type Shell
Jkt Extent Jacket Type 2
No. Secs 1
Parameters Shell Side Jacket Side
Pressure 3 2 kg/cm2
Tin (Inlet temperature) 70 20 oC
Tout (Outlet temperature) 50 30 oC
Medium Type Liquid Liquid -
Medium Fuel oil Water {treated}
Hours 2 - Hrs.
Materials of construction SA-240 Gr. 304 Plt. [UNS:S30400] IS 2062 Gr. B Plate

In this tutorial we will see how to design for heat transfer area in jacketed vessels or reactors.

Now let us add the equipment in the project by following the steps below.

12.1 First create a new project as described in "HOW TO CREATE A NEW PROJECT" in Chapter 3, Para 3.2.

12.2 To begin with, if you are adding this equipment to an existing project, first open the project if it is not open.

12.3 Now click on the project bar to in the "Project Explorer" to make it current.

12.4 Now select sub-menu option "Reactor Heat Transfer" available inside the top menu "Utilities".

Reactor Heat Transfer

12.5 The utility will be added to the current selected project in the Project Explorer with name "Reactor(thermal)". If it is not visible in the "Project Explorer", then click on the project bar to expand the tree. Two sub-branches: - “Shell data” and “Jacket data” will appear, which are needed to be filled.

Please ensure that you select appropriate Duty, as per test; whichever service required, i.e., Cooling, Heating, condensing, superheating, etc.

Reactor(thermal)

12.6 For the utility of Reactor heat transfer, following are the appropriate details that need to be filled in the displayed dialog.

Please ensure that you select appropriate duty, ID, length, thickness, fill the Agitation info and enter Jacket assembly details.

Reactor(thermal) details

Select the jacket type as per requirement; shell, limpet, dimple, spiral, etc. Enter no. of sections for jacket.

Also you can assign jacket extent i.e., full jacketing or only shell and shell plus bottom dish jacketing, etc.

Jacket Type

12.7 The next step is to input design data information. For inputting this, locate the tree entry "Shell Data" entry in it. First select the material for shell from the MOC list. Then select the medium type i.e., steam, liquid, gas, etc.

Shell Data Medium for Shell

12.8 Now select the specific medium that you are going to use in the shell. The sub medium can be selected as shown below.

Medium Type

A shell design information contains sub-entries for pressure inputs "Pr (kg/cm2g)" and temperatures inputs namely "Tin" and "Tout" for inlet temperature and outlet temperatures respectively. First enter the information as shown in the below screen. Also there is an entry for Op. hours of equipment, which should be filled.

Fill Information

12.9 Having updated operating design information for shell, similarly fill the data for jacket. Click on jacket data option. First select the material of jacketing from the MOC list.

Jacket DATA

Then select the medium of substance flowing in the jacket, and the type of medium used to heat or cool the medium present in the inner vessel. This can be selected through the list as shown below.

Medium Type for Jacket Sub Medium for Jacket

12.10 Now fill the jacket design information that contains sub-entries for pressure inputs "Pr (kg/cm2g)" and temperatures inputs namely "Tin" and "Tout" for inlet temperature and outlet temperatures respectively. First enter the information as shown in the below screen. In case of steam as a medium in jacket side temperature need not be required to be filled.

Fill details

12.11 This completes the parameters definitions for thermal design of vessel. In the entire above process, we have defined the equipment configuration, its overall dimensions, have defined design data (like pressures, temperatures etc. under various conditions, allowances etc.), and have defined materials for the various components.

12.12 While following the above procedure, you may have noticed that you have done minimum definitions or entered minimum inputs. The other entries have been left blank or empty and the software will select appropriate values for them.

12.13 At this stage, let us proceed to designing of the equipment. First you have to ensure that the equipment you want to design is the current equipment in case there are multiple equipments in the project. To make any equipment currently selected one, click on the equipment tag or any other item in its tree.

12.14 Now select sub-menu "Design Equipment" in the top menu "Design Model" to begin design of the equipment.

Design Equipment

12.15 After clicking on "Design Equipment" in the top menu "Design Model" a check box/ message window will pop up showing heat transfer area inadequacy as shown below.

Inadequacy Message

If the inputs for design are appropriate, then the vessel will be designed without any errors or warnings. In case the design inputs are inappropriate or the result of area is varying the error and warnings window will show some warning as jacket heat transfer area is inadequate. To check the inadequacy, you can check the difference by generating report.

Errors & Warnings

12.16 After clicking on "Code Reports" in the top menu "Create Reports" the design thermal calculations will be generated on the screen as shown below.

Create Report Design inputs & output

12.17 To check the inadequacy scroll down the report till the heat transfer area calculations, compare the required heat transfer area and available heat transfer area and take the corrective measures to reduce the difference i.e., the available heat transfer area should be always more than the required heat transfer area.

Compare two heat transfer areas and make changes

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13) FREQUENTLY ASKED QUESTIONS

API 650 STORAGE TANK

13.1 How to add nozzles: In the storage tank equipment tree that is displayed in the “Project Explorer”, you have to locate the sub-tree “Nozzle Schedule”. Now click right button of the mouse and then select “Nozzle Table” from the popped up menu. A sample process is shown here below.

Nozzle table Nozzle table

After entering the details as shown in the above “Nozzle Schedule” dialog, click “OK” button to update the model.

13.2 How to specify roof loads: Each storage tank that you add in project has an item ‘Tank Loads’ added to it by default. This item is displayed in sub-tree ‘Accessories Assembly’ in the ‘Project Window’.

Tank loads

The user can fill in the applicable loads in the field provided in this dialog. In case he does not input them, the software will automatically apply appropriate values meeting the requirements of code.

Further control of applicable loads and other tank designing options are provided in “Settings” sub-tree in the “Project Explorer” under the equipment tree as shown below.

Options for tank design

13.3 How to add Annular Plate: In certain cases, an additional thick plate circumscribing the tank Base Plate is provided. This plate is called ‘Annular Plate’. The requirement of Annular Plate is decided during Wind and Seismic upload calculations.

One can provide Annular Plate as per the following procedure.

Annular Plate

13.4 How to add Anchor Bolts: Tank subjected to uplift are required to be held down by providing anchoring. The requirement of Anchoring arrangement is decided during Wind and Seismic upload calculations.

One can provide Anchoring as per the following procedure.

Lug Support

13.5 New Software Feature: We would be shortly releasing following additional design features in this software.

13.5.1 Tank Vent / Breather Nozzles sizing as per API 2000.

13.5.2 Pontoon Type Floating Roof sizing and designing procedure.

13.5.3 Double Deck Floating Roof sizing and designing.

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