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Forwards Westinghouse rept, "CT-Yankee Rod Cluster Control Rod Vane Problem." Two damaged control rod assemblies removed & replaced.

Accession Number: ML20090D234

Date Released: Saturday, October 26, 2024

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• ML20090D231 - Forwards Westinghouse rept, "CT-Yankee Rod Cluster Control Rod Vane Problem." Two damaged control rod assemblies removed & replaced. (1 page(s), 6/11/1970)
• ML20090D237 - "CT-Yankee Rod Cluster Control Rod Vane Problem." (13 page(s), 6/30/1970)
• ML20090D243 - RO:during defueling in preparation for reactor internals & vessel insp,two rod clusters of control rod vane discovered severed from spider hub assembly.Cause unknown.Fuel assembly transferred to spent fuel pit for exam. (1 page(s), 5/15/1970)
• ML20090D250 - Inquiry Memorandum 213/70-C re broken control rod spiders for clusters 28 & 43. (2 page(s), 5/12/1970)
• ML20090D255 - Div of Compliance Monthly Rept for May 1970.Broken spider fingers found on two rod cluster control rods that stuck during Core I operation. (1 page(s), 5/31/1970)
• ML20090D259 - Forwards licensee rept of control rod vane problem detected during recent refueling outage.Results of Oct 1970 insp of San Onofre control rods requested. (1 page(s), 6/30/1970)