Risk based inspection Output and Benefits

  1. Subsea
  2. Production Facilities
  3. Production Engineering


Rbi Output and Benefits

The results of the RBI analysis are the inspection strategies with specification of components to inspect, locations to inspect, inspection methods to use, time intervals between the inspections, and the coverage assumed at the different inspections. The results of the inspections are used to update the modes for deterioration and thus to modify future inspection plans in accordance with the performance of the inspected components.

The results of the RBI analysis are inspection plans for subsea equipment that, on an overall basis, satisfy the acceptance criteria and at the same time minimize the economical risk for the operator of the facility.

RBI planning is a systematic approach to an installation-specific, cost– effective, and targeted inspection strategy for operation within acceptable safety, economic, and environmental criteria. The RBI assessment may cause changes to the existing inspection plan. Any change will be based on balancing risk, that is, on balancing inspections to meet the acceptance criteria. By postponing costly inspections there is a potential of cost savings on inspection.

References

[1] M. Humphreys, Subsea Reliability Study into Subsea Isolation System, HSE, London, United Kingdom, 1997.

[2] Det NorskeVeritas, OREDA Offshore Reliability Data Handbook, fourth ed., Det Norske Veritas Industri Norge as DNV Technica, Norway, 2002.

[3] Mott MacDonald Ltd, PARLOC 2001, The Update of the Loss of Containment Data for Offshore Pipelines, fifth ed., HSE, London, United Kingdom, 2003.

[4] Norwegian Technology Standards Institution, CO2 Corrosion Rate Calculation Model, NORSOK Standard No. M-506, (2005).

[5] M.H. Stein, A.A. Chitale, G. Asher, H. Vaziri, Y. Sun, J.R. Collbert, Integrated Sand and Erosion Alarming on NaKika, Deepwater Gulf of Mexico, SPE 95516, 2005, SPE Annual Technical Conference and Exhibition, Dallas, Texas, 2005.

[6] O.H. Bjornoy, C. Jahre-Nilsen, O. Eriksen, K. Mork, RBI Planning for Pipelines Description of Approach, OMAE2001/PIPE-4008, OMAE 2001, Rio de Janeiro, Brazil, 2001.

[7] American Society of Mechanical Engineers, Manual for Determining the Remaining Strength of Corroded Pipelines, ASME B31G-1991, New York, 1991.

[8] Det Norske Veritas, Corroded Pipelines, DNV-RP-F101, 2004.


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