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:


Field	Notes
Consequence Detection Time	Required only for RBI Analysis records whose Criticality Item Type is not Heat Exchanger-Bundle.
Consequence Isolation Time	Required only for RBI Analysis records whose Criticality Item Type is not Heat Exchanger-Bundle.
Corrosion Rate	Required only for RBI Analysis records whose Criticality Item Type is Heat Exchanger-Bundle.
Corrosion Rate Shell Side	Required only for RBI Analysis records whose Criticality Item Type is Heat Exchanger-Bundle.
Fill Height	Required only for RBI Analysis records whose Criticality Item Type is Storage Tank.
Flammable Leak Type	Required only for RBI Analysis records whose Criticality Item Type is Heat Exchanger-Bundle and the leaking fluid is flammable.
Foundation Type	Required only for RBI Analysis records whose Criticality Item Type is Storage Tank.
Initial Fluid Phase	None
Initial State Shell	Required only for RBI Analysis records whose Criticality Item Type is Heat Exchanger-Bundle.
Inspection Interval	Required only for RBI Analysis records: That are linked to Criticality Consequence Evaluation records whose Foundation Type is Sand, Silt, Gravel, or Clay. Whose Criticality Item Type is Heat Exchanger-Bundle.
Leak Effect	Required only for RBI Analysis records that are linked to Criticality Consequence Evaluation records whose Storage Takes contain Sand, Silt, Gravel, or Clay.
Operating Pressure Shell Side	Required only for RBI Analysis records whose Criticality Item Type is Heat Exchanger-Bundle.
Percent Toxic	Required only for RBI Analysis records that are linked to Criticality Consequence Evaluation records whose Toxic Fluid field contains a value.
Product Unit Value	Required only for the RBI Analysis records whose Criticality Item Type is the Heat Exchanger-Bundle.
Rep Fluid Shell Side	Required only for RBI Analysis records whose Criticality Item Type is Heat Exchanger-Bundle.
Toxic Leak Type	Required only for the RBI Analysis records whose Criticality Item Type is the Heat Exchanger-Bundle and the Leaking Fluid is toxic.

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:


Field	Notes
Date in Service	Required only for RBI Analysis records that are linked to Criticality Env. Crack. Deg. Mech. Eval. records.
Initial Potential	Required only for RBI Analysis records that are linked to Criticality Env. Crack. Deg. Mech. Eval. records.
Inspection Confidence	Required only for RBI Analysis records that are linked to Criticality Env. Crack. Deg. Mech. Eval. records.
Number of Inspections -or- Equivalent Number of Inspections (whichever is populated)	Required only for RBI Analysis records that are linked to Criticality Env. Crack. Deg. Mech. Eval. records.

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:


Field	Notes
Date in Service	Required only for RBI Analysis records that are linked to Criticality Ext. Corr. Deg. Mech. Eval. records.
Estimated Rate	Required only for RBI Analysis records that are linked to Criticality Ext. Corr. Deg. Mech. Eval. records whose Selected Corrosion Rate is Estimated.
Inspection Confidence	Required only for RBI Analysis records that are linked to Criticality Ext. Corr. Deg. Mech. Eval. records.
Average Corrosion Rate	Required only for RBI Analysis records that are linked to Criticality Ext. Corr. Deg. Mech. Eval. records whose Selected Corrosion Rate is Average.
Number of Inspections -or- Equivalent Number of Inspections (whichever is populated)	Required only for RBI Analysis records that are linked to Criticality Ext. Corr. Deg. Mech. Eval. records.
Selected Corrosion Rate	Required only for RBI Analysis records that are linked to Criticality Ext. Corr. Deg. Mech. Eval. records.

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:


Field	Notes
Date in Service	Required only for RBI Analysis records that are linked to Criticality Int. Corr. Deg. Mech. Eval. records.
Inspection Confidence	Required only for RBI Analysis records that are linked to Criticality Int. Corr. Deg. Mech. Eval. records.
Long Term Avg. Corr. Rate	Required only for RBI Analysis records that are linked to Criticality Int. Corr. Deg. Mech. Eval. records whose Selected Corrosion Rate is Long Term Avg.
Number of Inspections -or- Equivalent Number of Inspections (whichever is populated)	Required only for RBI Analysis records that are linked to Criticality Int. Corr. Deg. Mech. Eval. records.
Selected Corrosion Rate	Required only for RBI Analysis records that are linked to Criticality Int. Corr. Deg. Mech. Eval. records.
Short Term Avg. Corr. Rate	Required only for RBI Analysis records that are linked to Criticality Int. Corr. Deg. Mech. Eval. records whose Selected Corrosion Rate is Short Term Avg.

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:


Field	Notes
Allowable Stress	Required only for RBI Analysis records: Whose Criticality Item Type is Storage Tank -and- Whose Allowable Stress is null or 0 (zero) -and- That are linked to Criticality Int. Corr. Deg. Mech. Eval. records whose Estimated Minimum Thickness Override? check box is not selected.
Area Humidity	Required only for RBI Analysis records that are linked to Criticality Ext. Corr. Deg. Mech. Eval. records.
Code Year	Required only for RBI Analysis records whose Allowable Stress Override check box is not selected and whose Criticality Item Type is not Storage Tank.
Criticality Item Type	None
Diameter	Required only for RBI Analysis records: Whose Criticality Item Type is Storage Tank -and- Whose Diameter is null or > 200 (Feet) -and- That are linked to Criticality Int. Corr. Deg. Mech. Eval. records whose Estimated Minimum Thickness Override? check box is not selected.
Construction Code	Required only for RBI Analysis records whose Allowable Stress Override check box is not selected.
Design Pressure	Required only for RBI Analysis records whose Allowable Stress Override check box is not selected.
Design Temperature	Required only for RBI Analysis records whose Allowable Stress Override check box is not selected.
Is Entry Possible?	Required only for RBI Analysis records that are linked to Criticality Ext. Corr. Deg. Mech. Eval. records.
Insulated	Required only for RBI Analysis records that are linked to Criticality Ext. Corr. Deg. Mech. Eval. records.
Joint Efficiency	None
Material Grade	Required only for RBI Analysis records whose Allowable Stress Override check box is not selected.
Material Spec	Required only for RBI Analysis records whose Allowable Stress Override check box is not selected.
Operating Pressure	None
Operating Temperature	None
Representative Fluid	None
Stress Lookup Table	Required only for RBI Analysis records whose Allowable Stress Override check box is not selected.
Susceptible to CUI	Required only for RBI Analysis records: Whose Criticality Item Type is not Heat Exchanger-Bundle -and- Whose Insulated field is set to null -and- That are associated with a Criticality Calculator External Corrosion record.
Nominal Thickness	None
Tube Operating Press Channel	Required only for RBI Analysis records whose Criticality Item Type is Heat Exchanger-Bundle.

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:


Field	Notes
Soil Type	None
High Value Area	None
Population Density Adjustment	None
High Consequence Area	None

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:


Field	Notes
Wall Thickness Loss	None

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:


Field	Notes
Wall Thickness Loss	None

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:


Field	Notes
Previous Damage	None
Above Ground Facilities	None
Public Education	None
One Call System	None

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:


Field	Notes
Allowable Stress	None
Built Prior to 1970	None
Code Year	None
Construction Code	None
Construction/Inspection Records Available	None
Criticality Item Type	None
Defects Reported	None
Design Pressure	None
Design Temperature	None
Diameter	None
Flow Rate	None
Insulated	None
Is CP System Present?	None
Is Piggable?	None
Joint Efficiency	None
LMPA (Land Movement Potential)	None
Material Grade	None
Material Spec	None
Nominal Thickness	None
Operating Pressure	None
Operating Temperature	None
Pipeline Segment Type	None
Representative Fluid	None
SCADA	None
SPA (Pressure Surge Adjustment)	None
Stress Lookup Table	None
Submerged at Water Crossing	If the value in the Pipeline Segment Type field is Above Ground, then the value in the Submerged at Water Crossing field is always No.
Tube Nominal Thickness	None
Tube Operating Press Channel	None