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SIMPLIFIED S-RBI FLOW CHART (2) Asset Integrity Database Review operating conditions and Materials SelectionĬorrosion Loops Loop Criticality Assessment Loop Criticality NegligibleĬRITICALITY MATRIX HIGH MEDIUM LOW NEGLIGIBLE S-RBI “LP piping” ¾ can be divided into 2 loops, e.g.
Carry out the criticality rating for each item ¾ can be grouped for similar piping items into e.g. Stop if Negligible Criticality or Negligible Consequence of Failure is obtained (no further analysis on item by item basis) ¾ these items are analysed by S-RCM to optimise maintenance plans and in a review scheme for RBI (checking if changes occurred) FOR INDIVIDUAL ITEMS:. Info on degradation available for all staff concerned with integrity!ĬRITICALITY ASSESSMENT FOR THE CORROSION LOOP: Information on degradation mechanisms (and affected areas) Good experience and part of S-RBI approach 
same degradation mechanisms © Shell Global SolutionsĬORROSION LOOPS FOR A KERO HDT Hydrogen from PlatformerĪpplied in refineries, chemical plants and gasplants. PART OF THE UNIT SUBJECTED TO: ¾ the same process conditions ¾ the same failure mechanisms ¾ the same materials selection criteria ONE “OPERATING WINDOW” ¾ control of degradations via process control ¾ values agreed by team (boundary conditions for RBI) ¾ deviation should be reported WHAT IS A “CORROSION LOOP”? “A PRACTICAL WAY TO DESCRIBE, UNDERSTAND AND CHECK DEGRADATION MECHANISMS IN A UNIT” WHAT TYPE OF DEGRADATION CAN OCCUR AND WHERE ? MATERIAL + ENVIRONMENT WHICH (PROCESS) CONTROLS ARE NEEDED ? S-RBI IS BASED ON CORROSION LOOPS CORROSION Inspection/ Monitoring Interval & Scope © Shell Global SolutionsĬORROSION LOOPS DIVIDE THE UNIT IN CORROSION LOOPSĭiscuss Materials Engineering issues/experience (generic)ĭivide the unit in Corrosion Loops (colouring PFS schemes) Loop Criticality Assessment Loop Criticality Negligible SIMPLIFIED S-RBI FLOW CHART (1) Asset Integrity Database Review operating conditions and Materials Selection Mainly by inspection & corrosion members, team review Download peta rbi windows#
Review plant data, former and future operating conditions (where applicable)ĭiscuss materials selection and inspection experienceĭevelop Corrosion Loops and Operating Windows “one liners”, giving relevant information only Or used from S-RCM or IPF, if already carried out RBI STUDIES - RRM DATABASE PREPARATION, WHERE POSSIBLE BEFORE THE STUDIES:
Tasks can be compared & optimised © Shell Global Solutions TASKS FOR EACH ITEM DEFINED ON SAME CRITERIA ¾ In line with HSE standard (RAM, April 1999) THE ADVANTAGES OF SINGLE RRM DATABASE FOR RBI/RCM/IPF ANALYSES Instrumented Protective Functions (safeguarding systems)ĬORROSION LOOP DESCRIPTIONS CRITICALITY ASSESSMENT CONFIDENCE ASSESSMENT S-RBI AS PART OF RISK AND RELIABILITY MANAGEMENT (RRM) RRM
Download peta rbi software#
In the RRM software part of RRM Manual, issued in 1999 SHELL RISK-BASED INSPECTION - THE METHODOLOGY Risk and Reliability Management Presenter: Maarten Festen BUSINESS GROUP MAINTENANCE, INSPECTION AND RELIABILITY ENGINEERING P-B-v1.1
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