Overview of Alarm and Shutdown Frequencies in Offshore Production.

摘要

The paper provides an overview of alarm and shutdown frequencies in offshore production. The foundation for Scientific and Industrial Research at the Norwegian Institute of Technology (SINTEF) has reviewed nearly 1300 daily activity reports submitted by oil companies to the Norwegian Petroleum Directorate. Estimated frequencies of hazardous situations and spurious activations of safety components are presented. This includes estimates of the alarm rate from process sensors and fire and gas detectors. Furthermore, the main types of hazardous situations and safety component failures are presented. A classification scheme suitable for analysis of dependent failures is given based on the offshore field data. The classification scheme considers all types of failures occuring field operations, such as failures due to natural aging of components (random failures), excessive environmental stresses and human-made mistakes during engineering and operation. The results may be used to identify actions which improve both the safety of an installation and the production regularity. Thus, the results are both from safety as well as from an economic point of view. The results may also be used to identify realistic scenarios for training of personnel in crisis intervention and to improve the reporting frequency of safety alarms and shutdowns. 3 refs., 8 figs.