Floating production facilities in deepwater GoM: Quantitative Risk Assessment
DNV Consulting has performed several Quantitative Risk Assessments (QRAs) to evaluate the risks associated with floating production facilities located in the deepwater Gulf of Mexico.
Critical issue: - The main objectives of the studies were to estimate and assess the risk, compare the estimated risk level with risk acceptance criteria outlined by the client, and to propose risk reducing measures as found relevant
Solutions: - Hazard Identification (HAZID) studies were carried out as part of the QRA
- Hazard identification is often referred to as the most important step in risk assessment, since what has not been identified will not be evaluated, and hence cannot be mitigated
- A HAZID study typically focuses on a high activity year of operation in order to ensure that the risk level is acceptable for a ‘worst case’ scenario
Value delivered: - Comparison of facility’s risk level against acceptance criteria and/or industry standard
- Development of relevant recommendations to reduce risk and quantification of the risk effect
- Assess cost versus benefit based on estimated risk reduction and cost of implementation
- As low as reasonably practicable (ALARP) demonstration
- Specific risk-based decision support such as:
- Fire rating on Living Quarter (LQ) wall
- Location of LQ air intake
- Installation of riser Subsea Isolation Valve (SSIV)
- Location and shielding of escape ways and lifeboats
- Initiate blowdown on gas detection
- Provide fixed area deluge in process area
- Implementation of collision avoidance measures
- Dropped object protection and/or lifting restrictions
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