Summary of Work Completed Under the Environmental and Dynamic Equipment Qualification Research Program (EDQP)

摘要

The report documents the results of the main projects undertaken under the Environmental and Dynamic Equipment Qualification Research Program (EDQP). Lasting from fiscal year 1983 to 1987, the program dealt with environmental and dynamic (including seismic) equipment qualification issues for mechanical and electromechanical components and systems used in nuclear power plants. The research results have since been used by both the NRC and industry. The program included seven major research projects that addressed the following issues: (1) containment purge and vent valves performing under design basis loss of coolant accident loads, (2) containment piping penetrations and isolation valves performing under seismic loadings and design basis and severe accident containment wall displacements, (3) shaft seals for primary coolant pumps performing under station blackout conditions, (4) electrical cabinet internals responding to in-structure generated motion (rattling), and (5) in situ piping and valves responding to seimic loadings. Another project investigating whether certain containment isolation valves will close under design basis conditions was also started under this program. The report includes eight main sections, each of which provides a brief description of one of the projects, a summary of the findings, and an overview of the application of the results. A bibliography lists the journal articles, papers, and reports that document the research.