Shutdown and post-test examination plan for the small steam generator model (SSGM)

摘要

A detailed working plan to terminate and to examine the Westinghouse duplex tube small steam generator model (SSGM) is defined and presented. Following completion of the current phase (DNB Corrosion Testing in Off-Normal Water Chemistry) of testing, the Advanced Reactors Division GPL-1/SWL-1 Loops will be shut down on both the water side and the sodium side. The SSGM will be cleaned prior to removal of the model from the test silo. During disassembly and following removal of the model to a dissection area at ARD, visual and photographic records of SSGM will be made. Secondary cleaning and initial dissection into seven sections will be conducted with protective oils and plastic bags used to inert the outer shell and duplex tube samples. The major sampling and detailed microscopic examination of the duplex tubing, tube-to-tubesheet welds and tube-support pads will be made following shipment of the dissected model to Tampa. A 72-inch section containing the region over which the DNB interface moved during the SSGM testing will be inerted and shipped to General Electric Company for their examination.