In-situ testing, seismic qualification and modification analysis of nuclear plant electrical control cabinets and panels

This article describes efforts to provide a means of determining the seismically induced, in-cabinet vibration environment for safety related electric devices in the control room cabinets of an operating U.S. nuclear power plant. The in-cabinet seismic vibration environment is required to establish the seismic levels to which the device will be tested to certify seismic integrity and operability