What is a “sunny day” dam failure?
A “sunny day” dam failure is one that is not associated with a storm or flood wave. The Federal Energy Regulatory Commission (FERC) requires this failure mode to be evaluated for licensed dams, as well as failure during the design storm (which depends on the dam size and hazard classification). The impoundment is assumed to be at its normal elevation, and the failure mode is usually assumed to be a piping failure for earthen embankments, or a sudden gate failure for concrete dams. 11. What is the difference between Construction Quality Assurance (CQA) and Construction Quality Control (CQC)? Typically, CQC is an internal function performed by a Contractor to verify that the work being completed by the Contractor meets the requirements of the project. This function can be performed by in-house personnel or by a third-party firm, but the testing results and observations are reported first to the Contractor for his/her use and information. These results may be forwarded on to other parties
