PLSS Equipment Details Page - Pipeline, Flowline and Pipeline Jumper

To access the Equipment Details Page, click on the Equipment ID hyperlink of the Equipment belonging to the "Pipeline", "Flowline", or "Pipeline Jumper" Equipment group with Pipe Type "Carbon steel", "CRA", Unbounded Flexible or "Non-Metallic" in the Equipment Main Screen or any other screen. See IMS Details Page.

Header

The header of the Equipment Details page shows the name of the Equipment/ Equipment ID and a number of navigation options:

 

The following items are displayed:

Details

The Details section shows key Equipment information:

The following items are displayed:

Design Data for Pipe type Carbon Steel

The PL Design Data section shows different Design data critical for ensuring the integrity and reliability of the Pipeline. This data is used to determine the Maximum allowable operating pressure (MAOP) of the Pipeline, which is a key parameter in pipeline design and operation. The design data is also used to select appropriate inspection and maintenance strategies for the Pipeline. The section consists of the following items:

1. Life cycle specification.

2. General.

3. Pipe specification.

4. Internal corrosion protection.

5. External corrosion protection.

6. Environment.

7. Design code.

8. RBA parameters.

9. IMS-PLSS Parameters.

   
   

   

Life Cycle Specification

Here the information about the Pipeline installation and life is displayed, showing the following parameters:

General

The section contains the following parameters:

Pipe Specification

The section contains the following parameters:

Internal Corrosion Protection

In this section, you can specify if the Clad or Linear protection was applied to the internal wall of the pipeline and its thickness. Clad/Liner materials are used to provide corrosion resistance. If for Clad/Liner applied "None" has been selected then no other information will be visible. Otherwise, the Clad/Liner material and the thickness can be specified. 

The Clad/Liner material drop-down menu displays the following options: 

Clad materials:

• 304L (Austenitic SS)

• 316L (Austenitic SS)

• 825 (Nickel Alloy SS)

• 625 (Nickel Alloy SS)

Liner materials:

• MDPE (Polyethylene (PE))

• HDPE (Polyethylene (PE))

• XLPE (Polyethylene (PE))

• HPPE (Polyethylene (PE))

• Other (Other)

  
  

  Note: The Internal Corrosion Protection section is not available for "Pipleines", "Flowlines" and "Pipeline Jumpers" with Pipe Types "CRA", "Non-metalic pipe" and "Unbounded Flexible".

External Corrosion Protection

In this section, materials for protecting Pipelines against external corrosion can be selected. 

Note: The External Corrosion Protection section is not available for "Pipleines", "Flowlines" and "Pipeline Jumpers" with Pipe Types "Non-metalic pipe" and "Unbounded Flexible".

Unbounded Flexible

This section is available only for the Pipe Type "Unbounded Flexible". It contains the following parameters:

Environment

In this section, the following environmental parameters related to pipeline installation are displayed:

Note: The Environment section is not available for "Pipleines", "Flowlines" and "Pipeline Jumpers" with Pipe Type "Unbounded Flexible".

Design Code

The section contains the following parameters:

Pipeline Design Code (Customised)

If under Pipeline Design Code "(Customised)" is selected, the Design factor between 0.3 and 0.9 will be specified.

Pipeline Design Code – ASME B31.4

If under Pipeline design code "ASME B31.4" is selected the value of the Design factor will be 0.72 and this cannot be changed.

Pipeline Design Code – ASME B31.8

If under Pipeline design code "ASME B31.8" is selected, the Location Class and Temperature Derating Factor will be displayed as well as the Design Factor which is automatically filled in. A Location Class is a geographical area classified according to its approximate population density and other characteristics that are considered when designing and pressure testing piping to be located in the area. To specify the Location Class select the applicable option from the dropdown menu.

 For Pipelines designed according to "ASME B31.8", the default Design Factor varies depending on the Location Class, while the Temp derating factor needs to be entered directly. 

The "ASME B31.8" Design Code is available for both Locations "Onshore" and "Offshore".

Pipeline Design Code – DNV OSF

The Design Code "DNV OSF" is available only for "Offshore" and "On- and offshore" Locations.

The Min. WT (or MAT) value has to be filled in. This value is directly being used in Defect Assessment calculations. In the FFS module, you will see that the Integrity curve for "DNV OSF" is a straight line at x-coordinate Nom WT – Min. WT.

Pipeline Design Code – ISO 13623

The Design code "ISO 13623" is available for both "Onshore" and "Offshore" Pipelines.

After selecting Pipeline Design Code "ISO 13623", select the value of the Design factor from the dropdown. The available options are 0.45, 0.55, 0.67, 0.77, and 0.83.

Pipeline design Code – API 1111

The Pipeline Design Code "API 1111" allows you to specify Shut in pressure, External Pressure, Design factor, Weld joint factor and Temperature derating factor for various Locations including Top of the rise, At water line, Bottom of riser, Flowline at subsea level.

The values in the table can be modified directly in the cell. To adjust any value within the table:

• Click the cell containing the value you wish to modify. 

• Enter the new numerical value.

• Press Enter or click outside the cell to confirm the change.

RBA Parameters

In the RBA Parameters section the Default Assessment Code, Consequence of Failure, Legal-local Inspection Frequency and the Assessment Strategy should be specified. 

The Default Assessment Code is used in the RBA calculation when no ILI Run data is available. It will be used to determine the Corrosion Tolerance. For a detailed description see Risk Based Assessment.

The Consequence of Failure represents the maximum potential impact of a pipeline failure, as determined by corporate Health, Safety, Security, and Environment (HSSE) risk assessment protocols. To specify the Consequence of Failure, select the appropriate option from the following choices:

• Extreme

• High

• Low

• Medium

• Negligible

Under Legal-local Insp frequency, you need to specify the required inspection frequency. For example, if the ILI run has to run at least once every five years, then select "Y5" from the drop-down menu. This value will be used later in the RBA module to calculate the Next Inspection Date.

The Risk-Based Assessment Strategy helps determine inspection intervals, maintenance priorities, and overall asset management decisions. In the Strategy field, select the applicable option from the following ones: 

• Design Intent

• Fit for Purpose

• Extended Life

IMS-PLSS Parameters

Always select "Smart (as needed)".

Flexible Pipe Layers

In this grid Pipe Layers can be specified. 

To add a Pipe Layer:

• Click the Plus button.

• Fill in the fields in the pop-up window.

• Select the Type of the layer from the drop-down menu with the following options:

• Fill in the Inner diametre (ID), Thickness in milimetres. 

• Select the Material and Grade from the drop-down menu. The available options change depending on the selected Type.

• Click Save.

Note: The Flexible Pipe Layers section is available only for the Pipe Type "Unbound flexible"

MAOP History

In this section, you can view the MAOP (Maximum Allowable Operating Pressure) values per Date and add new ones.

When entered the first time, the date should be equal to the In service date (this is by default). 

Adding an MAOP

To add a MAOP value:

• Click on the Plus button.

• In the MAOP field enter the desired value.

  
  

  Note: The specified MAOP must be less than the value in MAOP (calculated). A value greater than MAOP (calculated) cannot be filled in.

• From the Service Type drop-down menu, select the Service Type of the Pipeline.

• Click Save.

The MAOP (calculated) [kPa] is the Pressure Containment Capacity of the Pipeline and is calculated as follows:

Where SMYS is the Specified Minimum Yield Strength of material grade selected.

Example:

In the Design Data, we have:

• Design factor = 0.72

• Nominal Wall thickness = 5.6 mm

• Corrosion Allowance = 0 mm

• Temperature Derating Factor= 1

• Material Grade API 5L X52 which has a SMYS of 359000 kPa

• Diameter = 10 inches = 273.1 mm (outer diameter)

then MAOP (calculated) = 0.72 x (2 x (5.6-0)  x 1 x 359000) / 273.1 = 10600 kPa.

Besides the MAOP one can also provide information about the service type history.

Note: MAOP is in kPa and NOT in bar.

Sectioning

If a section of the Pipeline has different design parameters compared to the main Design Data, then that section can be defined as a separate section. For example, if the Pipeline has sections with a greater Nominal Wall Thickness and/or different Design Factor, e.g. road-crossing, than the specified values in the Design Data, a section can be defined.

In this section five tabs are available:

• Int. Corr

• Ext Corr

• FFS

• RBA

• 3PD

To expand / collapse any of the sections:

• Click on the Arrow on the right side of the blue bar.

 At the top of each grid there four icons that allow you to perform the following actions in the given order:

• Add a new Section.

• Delete one or more Sections from the grid.

• Import data from an Excel file.

• Export the data in the grid to an Excel file.

To use these icons, click on the icon that corresponds to the action you want to perform. 

Adding New Pipeline Sections

To add a new Pipeline section to any of the sections:

• Click the Plus button.

 

• Fill in the parameters in the pop-up window.

• Click Save.

The Sectioning is displayed as a horizontal bar, with vertical lines showing the beginning and end of sections.

Internal Corrosion

In the Int. Corr tab, the Pipeline profile can be specified. Sectioning for Booster Stations and Tie-Ins has not been implemented yet. New Pipeline profiles can also be imported through the Data Import in Settings using the Pipeline profile template. After entering the Pipeline profile data the graph will be displayed on the right side.

Note: The number of imported Pipeline profile sections will be reduced to a maximum of 201. This is the maximum Hydrocor can handle at the moment.

External Corrosion

By selecting the Extr. Corr tab, the Sectioning for External Corrosion will be displayed. Sectioning for Test Posts, Rectifier Stations, Onshore Soil / Offshore Resistivity, Wet Insulation and Coating have been implemented. The Isolated pipeline sections can be filled in but are not used in any calculation yet. The information provided in these tabs will be used in the calculations in the External Corrosion Module. 

In the example below data has been imported for the

• Test posts from file Case Study 01_Import_ExtCorr_TPstation.xlsx

• Onshore soil from file Case Study 01_Import_ExtCorr_SoilType.xlsx

• Coating from file Case Study 01_Import_ExtCorr_Coating.xlsx

• Rectifier station, manually added a rectifier station CPF01 at 3000m

You can find these files here: 

Module_DesignData_Sectioning.zip

Fit For Service

To see the Fit for Service sectioning, click on the FFS tab. The information provided in these tabs will be used in the calculations in the Fit for Service Module.

The data in the below example has been imported from the file Case Study 01_Import_FFS_PipeData.xlsx

You can find it here: 

Module_DesignData_Sectioning.zip

 

The Overall fit for service sectioning displays the number of Sections on the pipline, each section wll have its own row in the grid below.  

In the Grid, for each section, the MAOP (calculated) value is shown. If the MAOP is greater than this value the cell will be colored red and a warning in the FFS module will be shown.

If in the main Design section the selected Design code is "DNV OSF", then the field for MAT (Minimum allowable thickness) should be available in Pipe data. This MAT value will be used in the FFS calculations.

 If the Pipeline Design code is "API 1111", column Location will be visible in the grid.

Risk Based Assessment

When you select the RBA tab, the screen will display the RBA sections and the Consequence grid.  

This grid allows you to specify the Consequence of the Internal and External Corrosion Assessment of a particular Section of the Pipeline. 

Third Party Damage

The 3PD section allows you to view and manage information related to Third Party Damages in the Pipeline. In the Depth of cover grid you can indicate the Design (DOC) for each Section of the Pipeline, its starting point (Start at) and Length in meters.

For the definition of other sections on the Equipment Details page see PLSS Equipment Details page.