Maturing a Safety Management System into an Asset Integrity Case

摘要

The SMS at Terra Nova was developed from the mature practices at Petro-Canada. A key component of the SMS is the risk profile as it provides a record of the detrimental events or upset conditions that could affect the facility along with their probable frequency and consequences. The risk profile and imbedded QRA was used to demonstrate that the TLS established for the project were met. The TLS relate to risks to individuals on the FPSO, frequency of environmental releases and frequency of loss of asset integrity. The SMS system also provides the basis for demonstrating that risks are ALARP. The approach and techniques used for safety/risk management and for making safety-related decisions form the substantial basis of the asset integrity case being developed for Terra Nova. The asset integrity case provides DSM to demonstrate that the asset is being managed in such a manner that the risks to any type of capital invested in the operation of the Terra Nova asset are ALARP. Risk models are available to assist in making capital investment decisions and in optimizing OPEX. These models offer the potential to achieve an optimal risk-return balance. The first DSM that was used for Terra Nova was that for maintenance optimization (TESTOP). This DSM was used to rationalize the extension of the interval of testing of safety critical systems from that prescribed by regulation. The potential savings from extending the test intervals amount to millions of dollars per month.