RBI Policies

Policies used to Calculate an RBI 581 Risk Analysis

This topic provides a list of Policies used by each family in RBI 581 to calculate an RBI 581 Risk Analysis.

If you want to design a policy, you must be a member of the following Security Groups:

  • MI Policy Designer

    -and-

  • MI RBI Calculation Policy Designer

If you want to view a policy, you must be a member of the following Security Groups:

  • MI Policy Viewer

    -and-

  • MI RBI Calculation Policy Viewer

Family: RBI 581 Cracking Damage Evaluation

The following table provides a list of Policies that are used by RBI 581 Cracking Damage Evaluation.
Degradation MechanismPolicy

581-Sulfide Stress Cracking

581-HIC/SOHIC-H2S

RBI 581 Calculate Environmental Severity
581-HIC/SOHIC-H2SRBI 581 Calculate Susceptibility - HIC/SOHIC H2S
581-Amine CrackingRBI 581 Calculate Susceptibility - Amine Cracking
581-Caustic CrackingRBI 581 Calculate Susceptibility - Caustic
581-HIC/SOHIC-HFRBI 581 Calculate Susceptibility - HIC/SOHIC HF

581-Hydrogen Stress Cracking

581-HIC/SOHIC-HF

RBI 581 Calculate Susceptibility - HSC HF
581-Polythionic Acid CrackingRBI 581 Calculate Susceptibility - PASCC
581-Sulfide Stress CrackingRBI 581 Calculated Susceptibility - SSC
Note: The susceptibility for 581-Chloride Stress Corrosion Cracking and 581-Alkaline Carbonate Stress Corrosion Cracking is calculated as part of the RBI 581 calculation engine instead of Policy Manager.

Family: RBI 581 External Cracking Damage Evaluation

The following table provides a list of Policies that are used by RBI 581 External Cracking Damage Evaluation.

Degradation MechanismPolicy
581-Austenitic Component Cracking Under Insulation  RBI 581 Calculate Susceptibility - Austenitic CUI
581-Austenitic Component Atmospheric CrackingRBI 581 Calculate Susceptibility - Austenitic

Family: RBI 581 Mechanical Fatigue Damage Evaluation

The following table provides a list of Policies that are used by RBI 581 Mechanical Fatigue Damage Evaluation.

Degradation MechanismPolicy
581-Piping Mechanical FatigueRBI 581 Mechanical Fatigue Pipe Damage Evaluation

Family: RBI 581 Thinning and Lining Evaluation

The following table provides a list of Policies that are used by RBI 581 Thinning and Lining Evaluation.

Degradation MechanismPolicy
581-Amine CorrosionRBI 581 Amine Corrosion Rate
581-Acid Sour Water CorrosionRBI 581 Acid Sour Corrosion Rate
581-Alkaline Sour Water CorrosionRBI 581 Alkaline Sour Water Corrosion Rate
581-Atmospheric Tank Bottom CorrosionRBI 581 AST Bottom Corrosion Rate
RBI 581 Damage Factor - AST Bottom Thinning
581-Cooling Water CorrosionRBI 581 Cooling Water Corrosion Rate Estimation
581-Soil Side CorrosionRBI 581 Soil Side Corrosion Rate Calculation
581-High Temperature H2/H2S CorrosionRBI 581 H2-H2S Corrosion Rate
581-Sulfuric Acid CorrosionRBI 581 H2SO4 Corrosion Rate
581-Hydrochloric Acid CorrosionRBI 581 HCL Corrosion Rate
581-High Temperature OxidationRBI 581 HT Oxidation Corrosion Rate
581-Hydrofluoric Acid CorrosionRBI 581 Hydrofluoric Acid Corrosion Rate
581-High Temperature Sulfidic and Naphthenic Acid Corrosion RBI 581 Sulfidic and Naphthenic Corrosion Rate

Policies used to Generate Recommendations

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

Policies used in Risk Mapping

This following policies are used in risk mapping in RBI 581:

  • 581-DEF-RISK_MAPPING-OPERATIONS
  • 581-DEF-RISK_MAPPING-SAFETY

If you want to design a policy, you must be a member of the following Security Groups:

  • MI Policy Designer

    -and-

  • RBI Risk Mapping Policy Designer

If you want to view a policy, you must be a member of the following Security Groups:

  • MI Policy Viewer

    -and-

  • RBI Risk Mapping Policy Viewer

Policies Used to Suggest PDMs

The RBI Degradation Mechanism Screening Policy is used to screen the PDMs for the RBI Component. The policy contains a sub-policy, such as RBI 581 DM Screening - Thinning and Lining, which suggests the following Thinning and Lining Damage Mechanisms for the components based on the criteria:
  • 581-Atmospheric Tank Bottom Corrosion
  • 581-Cooling Water Corrosion
  • 581-Soil Side Corrosion
  • 581-Internal Component Lining Damage
  • 581-High Temperature Oxidation
  • 581-High Temperature Sulfidic and Naphthenic Acid
  • 581-Sulfuric Acid Corrosion
  • 581-Hydrofluoric Acid Corrosion
  • 581-Hydrochloric Acid Corrosion

You can add sub-policies for all other Damage Mechanism types that you want to screen.

You must be a member of the MI Policy Designer Security Groups to modify the design of a policy.

You must be a member of the MI Policy Viewer Security Groups to view a policy.

RBI 581 DM Screening - Thinning and Lining policy follows the below guidelines. If there are adequate measures to eliminate or minimize corrosion you can deselect the suggested PDMs from linking.

Suggested Thinning DMAvailable field in RBI ComponentScreening CriteriaNotes
581-High Temperature Sulfidic and Naphthenic AcidOperating TemperatureOperating temperature shall be greater than 400 degrees FahrenheitMajority of all Base Materials are suspected. Thus, system is not checking Base Material field.
Sulphur ConcentrationProcess Fluid shall contain sulphur compounds
581-High Temperature OxidationOperating TemperatureOperating temperature shall be greater than 900 degrees Fahrenheit
Is Air or Oxident Present?Air or Oxidant shall be present
581-Hydrochloric Acid CorrosionProcess FluidThe representative fluid shall be HCL
Free WaterPresence of Water shall be detected
pH of WaterReported pH shall less than 7
581-Hydrofluoric Acid CorrosionProcess FluidThe representative fluid shall be HF
581-Sulfuric Acid CorrosionProcess FluidThe representative fluid shall be H2SO4 (Sulfuric Acid)
581-Cooling Water CorrosionCooling System TypePresence of a Cooling water systemDefining a Cooling system Type in RBI component shall screen the component for soil side corrosion.
581-Soil Side CorrosionSoil Type 581Equipment is partially or fully exposed to soil. Defining a Soil Type in RBI component shall screen the component for soil side corrosion.
581-Internal Component Lining DamageLiner PresentA liner provided to protect the base material shall be present. NA
581-Atmospheric Tank Bottom CorrosionComponent TypeComponent Type shall be Tank BottomTank Bottom is suspected since it is expected to be degraded from either process side or soil side.

Policies and Fields Used to Calculate Corrosion Rate

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

Policies and Fields Used to Calculate Susceptibility

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