Calculations

This topic provides a list of fields that are required in each family to calculate an RBI Criticality Analysis, RBI PRD Criticality Analysis, and an RBI Pipeline Analysis. Some fields are conditionally required, and these conditions are described in the Notes column in the following tables.

Fields Required to Calculate RBI Criticality Analyses

To calculate an RBI Criticality Analysis, values may be required in certain fields in the following families:

• Criticality Consequence Evaluation
• Criticality Env. Crack. Deg. Mech. Eval.
• Criticality Ext. Corr. Deg. Mech. Eval.
• Criticality Int. Corr. Deg. Mech. Eval.
• RBI Criticality Analysis

Criticality Consequence Evaluation family: The following table lists the fields in the Criticality Consequence Evaluation family that require values in order to calculate an RBI Analysis:

Criticality Env. Crack. Deg. Mech. Eval. family

The following table lists the fields in the Criticality Env. Crack. Deg. Mech. Eval. family that require values in order to calculate an RBI Analysis:

Criticality Ext. Corr. Deg. Mech. Eval. family

The following table lists the fields in the Criticality Ext. Corr. Deg. Mech. Eval. family that require values in order to calculate an RBI Analysis:

Criticality Int. Corr. Deg. Mech. Eval. family

The following table lists the fields in the Criticality Int. Corr. Deg. Mech. Eval. family that require values in order to calculate an RBI Analysis:

RBI Criticality Analysis family

The following table lists the fields in the RBI Criticality Analysis family that require values in order to calculate an RBI Analysis:

Fields Required to Calculate RBI PRD Criticality Analyses

Several fields in RBI families are required in order to calculate RBI PRD Criticality Analyses. If you try to calculate an RBI PRD Analysis and any required fields do not contain values, the analysis will not be calculated, and the Calculation Status dialog box will appear, displaying a list of the required fields that do not contain values. The required fields differ depending upon whether the RBI PRD Analysis contains a Leak Criticality Degradation Mech Evaluation record or an Over Pressure Criticality Degradation Mech Evaluation record.

Analyses Containing a Leak Record: The following lists describe the fields that are required in order to calculate RBI PRD Analyses that meet the following criteria:

• They contain an Over Pressure Criticality Degradation Mech Evaluation record (i.e., a record belonging to the Criticality Over Pressure Deg. Mech. Eval. family).

• They contain a Leak Criticality Degradation Mech Evaluation record (i.e., a record belonging to the Criticality Leak Deg. Mech. Eval. family).

The lists are categorized by the family to which the required fields belong.

PRD Consequence Evaluation:

• Cost of Fluid

• Environmental Cost

• Unit Production Margin

• Consequence for Protected Assets

  Note: The Consequence for Protected Assets field is required only when the pressure relief device protects equipment.

Criticality Leak Deg. Mech. Eval.:

• Date in Service

• Service Severity - Leak

RBI PRD Criticality Analysis:

• Criticality Item Type

• Operating Pressure

  Note: If the pressure relief device protects RBI Components, the Operating Pressure field is populated automatically from the Operating Pressure field in the driving RBI Component. If, however, the pressure relief device protects equipment, you must type a value in this field manually.

• Operating Temperature

• PRD Discharge Location

• Service Severity

• Driving Component

  Note: The Driving Component field must contain a value if the pressure relief device protects RBI Components.

• Damage Factor Class

  Note: The Damage Factor Class field must contain a value if the pressure relief device protects equipment.

• PRD Relief Area

  Note: The PRD Relief Area field is required and must contain a value greater than zero if the Multiple PRDs check box is selected.

• PRD Total Relief Area

  Note: The PRD Total Relief Area field is required and must contain a value greater than zero if the Multiple PRDs check box is selected.

Criticality PRD Component - Relief Valve:

• Inlet Size

• Set Pressure

• Rated Capacity

Analyses That Do not Contain a Leak Record: The following table lists the fields that are required in order to calculate RBI PRD Analyses that meet the following criteria:

• They contain an Over Pressure Criticality Degradation Mech Evaluation record (i.e., a record belonging to the Criticality Over Pressure Deg. Mech. Eval. family).

• They do not contain a Leak Criticality Degradation Mech Evaluation record (i.e., a record belonging to the Criticality Leak Deg. Mech. Eval. family).

The lists are categorized by the family to which the required fields belong.

PRD Consequence Evaluation:

• Cost of Fluid

• Environmental Cost

• Unit Production Margin

• Days to Repair

• Consequence for Protected Assets

  Note: The Consequence for Protected Assets field is required only when the pressure relief device protects equipment.

Criticality Over Pressure Deg. Mech. Eval.:

• Date in Service

RBI PRD Criticality Analysis:

• Criticality Item Type

• Operating Pressure

  Note: If the pressure relief device protects RBI Components, the Operating Pressure field is populated automatically from the Operating Pressure field in the driving RBI Component. If, however, the pressure relief device protects equipment, you must type a value in this field manually.

• Operating Temperature

• Protected Equipment Type

  Note: If the pressure relief device protects RBI Components, the Protected Equipment Type field is populated automatically based upon the value in the Criticality Item Type field in the driving RBI Component. If, however, the pressure relief device protects equipment, you must type a value in this field manually.

• PRD Discharge Location

• Service Severity

• Driving Component

  Note: The Driving Component field must contain a value if the pressure relief device protects RBI Components.

• Damage Factor Class

  Note: The Damage Factor Class field must contain a value if the pressure relief device protects equipment.

• PRD Relief Area

  Note: The PRD Relief Area field is required and must contain a value greater than zero if the Multiple PRDs check box is selected.

• PRD Total Relief Area

  Note: The PRD Total Relief Area field is required and must contain a value greater than zero if the Multiple PRDs check box is selected.

• MAWP (Maximum Allowable Working Pressure)

• Next Inspection Date

Fields Required to Calculate RBI Pipeline Analyses

In order to calculate an RBI Pipeline Analysis, you are required to enter values in fields in the following families:

• Criticality Consequence Evaluation
• RBI Pipeline Analysis
• Criticality Ext. Corr. Deg. Mech. Eval.
• Criticality Int. Corr. Deg. Mech. Eval.

Criticality Consequence Evaluation family

The following table lists the fields in the Criticality Consequence Evaluation family that require values in order to calculate an RBI Pipeline Analysis:

Criticality Ext. Corr. Deg. Mech. Eval.

The following table lists the fields in the Criticality Ext. Corr. Deg. Mech. Eval. family that require values in order to calculate an RBI Pipeline Analysis:

Criticality Int. Corr. Deg. Mech. Eval.

The following table lists the fields in the Criticality Int. Corr. Deg. Mech. Eval. family that require values in order to calculate an RBI Pipeline Analysis:

Criticality Third Party Deg. Mech. Eval.

The following table lists the fields in the Criticality Third Party Deg. Mech. Eval. family that require values in order to calculate an RBI Pipeline Analysis:

RBI Pipeline Analysis

The following table lists the fields in the RBI Pipeline Analysis family that require values in order to calculate an RBI Pipeline Analysis:

This topic has been intentionally excluded from the GE Digital APM product documentation website. This topic is available to you via the product documentation that is provided within the GE Digital APM system.

This topic has been intentionally excluded from the GE Digital APM product documentation website. This topic is available to you via the product documentation that is provided within the GE Digital APM system.

This topic has been intentionally excluded from the GE Digital APM product documentation website. This topic is available to you via the product documentation that is provided within the GE Digital APM system.

For Tanks

Values in the following fields in an RBI Criticality Analysis datasheet are used to calculate the value in the Allowable Stress field:

• Stress Lookup Table
• Construction Code
• Code Year
• Material Spec
• Material Grade
• Course Number
• Tensile Strength (from the Tank Stress record)
• Yield Strength (from the Tank Stress record)

Depending on the value in the Stress Lookup Table field, the values in the rest of the aforementioned fields are populated with the values in the corresponding fields in the PV Stress, Piping Stress, and Tank Stress Reference Tables. For example, if the value in the Stress Lookup Table field is Piping, then the value in the Code Year field is populated with the value in the Code Year field in the Piping Stress Reference Table.

If the value in the Course Number field is 1 or 2, then Allowable Stress is calculated as follows:

Allowable Stress = Minimum (0.80 x Yield Strength, 0.429 x Tensile Strength)

Otherwise, Allowable Stress is calculated as follows:

Allowable Stress = Minimum (0.88 x Yield Strength, 0.422 x Tensile Strength)

This topic has been intentionally excluded from the GE Digital APM product documentation website. This topic is available to you via the product documentation that is provided within the GE Digital APM system.