Managing Dam Safety Risks Through Potential Failure Mode Analysis and Surveillance and Monitoring Programs
Managing dam safety risks is the art of balancing the benefits a dam provides, such as potable water supply, irrigation, flood control, navigation, recreation, etc., against the consequences that would result if the dam were to fail such as, loss of life, property damage and loss of the benefits of the dam. Once a dam has been designed and constructed, it is up to the dam owner to assure that the dam is operated and maintained in a manner that provides a tolerable level of risk. A key component of any dam owners safety program should be a well thought out, focused, surveillance and monitoring program along with a comprehensive emergency action plan. In the United States, the Federal Energy Regulatory Commission (FERC) has developed guidelines on developing a Surveillance and Monitoring Program (SMP) that utilizes the re-sults of a Potential Failure Mode Analysis (PFMA) so that the SMP is focused on those items most critical to the safety of the dam. The guidance includes information on the critical elements that should be considered in developing the surveillance and monitoring plan and considerations for reporting the results of the surveillance and monitoring efforts. The use of a Potential Failure Mode Analysis allows development of focused programs that identify the early development of a failure mode so that the intervention efforts can be initiated as soon as possible and the greatest opportunity is provided for warning those downstream of an im-pending dam failure. This paper discusses the potential failure mode analysis process as utilized by FERC reg-ulated dam owners on 2,600 dams in the United States and the connection between potential failure mode analysis, surveillance and monitoring programs and emergency action plans. This technique is applied to existing dams in their current condition as well as to proposed re-mediations. In the case of earthquake damaged dams, for instance, the procedure is equally applicable to the examination of the current damaged condition and providing a systematic ba-sis for a safety assessment of remedial options as well as planning an interim surveillance and monitoring plan if the dam is to remain in its damaged condition for an extended period of time.
Surveillance monitoring, instrumentation potential failure mode potential fail-ure mode nalysis failure mode
Robin Charlwood Patrick J.Regan
Principal, Robin Charlwood & Associates, PLLC, Edmonds, Washington, USA Regional Engineer, Federal Energy Regulatory Commission, Portland, Oregon, USA
国际会议
International Conference on Dam Safety Management(2008水库大坝安全管理国际研讨会)
南京
英文
334-344
2008-10-22（万方平台首次上网日期，不代表论文的发表时间）