APPLICATION OF RISK BASED INSPECTION SYSTEMS TO THE BRITISH GAS ROUGH FIELD

Risk based inspection of process plants is a technique where inspection is concentrated on those areas which are most likely to fail and create problems if they do fail. The type of inspection carried out is in direct relation to the anticipated failure mode. The paper describes the implementation of the risk based inspection approach in the British Gas Rough Field. This has required: 1) the preparation of written schemes of examination; 2) an authoritative review of the pressure systems, including the assignment of grades and conditions to all of the piping and pressure vessels, including the assignment of grades and conditions to all of the piping and pressure vessels; 3) an operational criticality assessment of all piping and vessels to determine the consequences of failure, probability of failure and the failure mode for each item; 4) development of new inspection schedules and intervals; 5) development of a review and feedback system so that inspection results may be used to alter the grades of piping and equipment, and the subsequent inspection intervals. This development has been agreed with the certifying authority and has resulted in some inspection intervals being greater than the traditional five year certification limit.

• Supplemental Notes:
  • Inst Marine Engrs Trans, v 108 pt 3, 1996, p 165 [8 p, 5 tab]
• Authors:
  • Jones, J S
• Publication Date: 1996

Language

• English

Subject/Index Terms

• TRT Terms: Inspection; Risk analysis
• Old TRIS Terms: Gas fields; Process plants
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00733644
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Mar 27 1997 12:00AM