Best Practice for Risk Based Inspection

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1.4 ‘Extending run lengths of existing pressure equipment’. Proceedings of Seminar S504 at the Institution of Mechanical Engineers, London, 28 October 1997. 1.5 Mainstream Research Market 1998/99. HSE Publication C10 2/98. 1998. 1.6 ‘Guidance for Risk Based Inspection’, TWI/RSAE Proposal RP/SID/6306 November 1998. 1.7 Control of Major Accident Hazard Regulations 1999 (SI-1999-743), ISBN 011 08 21920, published by The Stationary Office. 1.8 The Planning of Control of Major Accident Hazard Regulations 1999 (SI- 1999-981), ISBN 011 08 23672, published by The Stationary Office. 7
Fig. 1.1 Process diagram for plant integrity management by risk based inspection 1. Assess the requirements for integrity management and risk based inspection 2. Define the systems, the boundaries of systems, and the equipment requiring integrity management 3. Specify the integrity management team and responsibilities 4. Assemble plant database 5. Analyse accident scenarios, deterioration mechanisms, and assess and rank risks and uncertainties 6. Develop inspection plan within integrity management strategy 7. Achieve effective and reliable examination and results 9b. Repair, modify, change operating conditions 8. Assess examination results and fitness-for-service 9a. Update plant database and risk analysis, review inspection plan and set maximum intervals to next examination 10. Audit and review integrity management process 8
Page 1 and 2: HSE Health & Safety Executive Best
Page 3 and 4: © Crown copyright 2001 Application
Page 5 and 6: 5.3. PUBLISHED DATA, EXPERIENCE AND
Page 7 and 8: Any feedback or comments on the con
Page 9 and 10: Duty Holders inspect plant to manag
Page 11 and 12: inspection planning processes are b
Page 13 and 14: when a root cause has led to deteri
Page 15: plant database containing an invent
Page 19 and 20: using suitable techniques, includin
Page 21 and 22: With this information the manufactu
Page 23 and 24: isk assessment carried out under Re
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Page 27 and 28: • The second details how to estim
Page 29 and 30: a) Amount of equipment within item.
Page 31 and 32: 2.9 SAFed - Guidelines on Periodici
Page 33 and 34: 3.2. CRITERIA FOR APPLICATION Good
Page 35 and 36: 3.3. DRIVERS TOWARDS RBI The reason
Page 37 and 38: 4. THE RBI TEAM 4.1. COMPOSITION AN
Page 39 and 40: assessment and inspection may affec
Page 41 and 42: 5. PLANT DATA REQUIREMENTS 5.1. ESS
Page 43 and 44: If the need for repair or modificat
Page 45 and 46: 5.2. FAILURE CONSEQUENCES ASSESSMEN
Page 47 and 48: • Accident Databases. Many user o
Page 49 and 50: detected by periodic examination. D
Page 51 and 52: • Use of check-lists and mechanis
Page 53 and 54: Step 1. Determine and score (on a s
Page 55 and 56: The main problem with this approach
Page 57 and 58: Methods used to assess the release
Page 59 and 60: 6.8. SUMMARY OF MAIN POINTS a) Risk
Page 61 and 62: within a written scheme. It may be
Page 63 and 64: For equipment purchased second hand
Page 65 and 66: (b) Industry guidelines The Institu
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Conversely, it would be prudent to
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HSE commissioned research (7.9) to
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They provide a basic proof of leak
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uncertainty will exist. For equipme
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8. ACHIEVEMENT OF RELIABLE INSPECTI
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Relevant Personnel Certification:
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Relevant Standards: BS EN 1711: 200
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measurements will more than likely
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Probability of detection (POD) resu
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• D-scan presentation: the displa
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Table 1 Generally accepted methods
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Table 4 NDT method versus damage ty
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8.2. REMOTE SCREENING TECHNIQUES Re
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The technique is particularly appli
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AE can be a very sensitive test met
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Because of the interdependence of t
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8.3.3. Discussion of POD and Flaw M
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a) A Technical Justification, and b
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ecommended. In particularly difficu
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8.7 HSE Project: ‘Programme for t
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Fig. 8.2 Example of Receiver Operat
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9. FEEDBACK FROM RISK BASED INSPECT
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9.2. RISK OF REPAIRS AND MODIFICATI
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It is considered best practice if t
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9.6. A DYNAMIC PROCESS - THE NEED F
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10. EVIDENCE OF EFFECTIVE MANAGEMEN
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Evidence of good co-operation can u
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• Fitness-for-service assessments
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10.12. SUMMARY OF MAIN POINTS (a) D
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A1. INTRODUCTION This Authoritative
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fed via pressure system 0019 - S -
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Probability of Failure Internal Cor
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(a) Vessels B1, B2 and B3 : Jackete
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(b) Vessel B4: Catalyst Column Prob
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Examination Periodicity: The freque
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(d) Vessel B6 : Catchpot Probabilit
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APPENDIX B AUDIT TOOL FOR RISK BASE
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1. Assess the requirements for inte
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B1.5. HOW DO INTEGRITY MANAGEMENT A
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B3. SPECIFYING THE RBI MANAGEMENT T
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B4. ASSEMBLY OF THE PLANT DATABASE
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B5.5. HOW HAS THE LIKELIHOOD OF FAI
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B6.5. WHAT METHODS AND FACTORS ARE
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B7.6. IS EVIDENCE OF NDT CAPABILITY
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B9. FEEDBACK FROM INSPECTION B9.1.
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APPENDIX C TECHNIQUES FOR IDENTIFYI
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Fault tree analysis is a very usefu
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TYPES OF DETERIORATION AND MODES OF
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Fig.D3 Creep fissure in pipework wa
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Fig.D6 Stress corrosion cracking in
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maximum permissible pressure must b
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APPENDIX E SOFTWARE PACKAGES SUPPOR
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These modification factors reflect
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APPENDIX F GLOSSARY OF TERMS
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Duty Holder Within this report, the
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Qualitative Risk Analysis Qualitati
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Best Practice for Risk Based Inspection

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