Software Step 11

Step 11 Review Results – NID, MII, IS, Inspection Effectiveness:

Below is explained how to implement Step 11 in the Software. See also Methodology Step 11.

Review the Results – IF, MII, NID, IS (and RBI Status)

To review the results:

• Refer to the S-RBI Analysis header, to see a summary of the results: IF, MII, NID, IS.

The S-RBI results are shown in the S-RBI Analysis header, as well as on the NID tab.

 

• Click the NID tab.
• Review the Next Inspection Date (NID) calculation inputs:
  • The Last Inspection Date (LID), is based on the Inspection History (specific for that particular DM). See Step 4.
  • The Maximum Inspection Interval (MII = IF x RL).
  • When Lining/Coating has been taken credit for, you will see MII Lining / MII Coating. See Step 6. This value will increase the NID.
  • NID Ultimate = LID + MII + MII Lining.
  • The Last Legal Inspection Date (LLID), is also based on the Inspection History (but not DM specific).
  • A Legal/local interval, based on jurisdiction regulations, is entered on the Remnant Life tab. See Step 6.
  • The Next Legal Inspection Date (NLID = LLID + Legal/local interval).
  • For the NID, RBI will use the shorter of the two dates: NLID and NID Ultimate.
• Review the Inspection Strategy (IS).
• Refer to Guidance per Special Emphasis and Guidance per DM for guidance on the interpretation of the results. See Methodology Step 11 for the summary table of the references.
• Notice the RBI Status: “Analysis completed, not implemented” or, “Analysis completed, implemented” for AR DMs. Where the Circuit is set to inherit the Interval Factor (IF) from the Component (see Risk Based Inspection (RBI) - Theory and Step 12). Note: The figure shows the automatic S-RBI Analysis status indication, in relation to the Degradation Management Steps.
• If desired, click Edit to manually change the RBI Status. Remember to add a Reason for the status change.

The S-RBI status indication in relation to the Degradation Management Steps. 

Do a Sensitivity Analysis

If desired, you can also do a Sensitivity (what if) analysis. This is only applicable to AR DMs.

To do a Sensitivity analysis:

• Click the Sensitivity tab.

Use Sensitivity tab to analysis the sensitivity of the S-RBI results to different parameters.

 

• Change different parameters to see how the NID (and Inspection Effectiveness) is affected.
• Use this information to identify the parameters to which the NID is sensitive.
• If desired, gather more data to update uncertain data for the identified parameters on the RL / Criticality / Confidence tabs.

Determine the Inspection Effectiveness

To calculate the required Inspection Effectiveness (for AR DMs):

• Take note of the IF, shown in the header.
• Take note of the RL, on the Remnant Life tab.
• Add the Lining/Coating RL, on the Lining/Coating tab, if applicable.
• Use the table in Risk Based Inspection (RBI) - Theory to lookup the Required Inspection Effectiveness.
• For General Thinning, use the table in Methodology Step 11 to determine the required combination of Inspection technique and coverage, for the Required Inspection Effectiveness. Otherwise refer to Guidance per Special Emphasis Components and Guidance per DM (see the summary table in Methodology Step 11).
• In Step 12 the identified combination of inspection technique and coverage should then be included in the Schedule scope.

Print a Report

To Print a Report:

• Click on the Report button.Click the Report button to generate a report.

   

• Select the desired fields.
• Click Generate as PDF or Generate as Word or Print.