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"Div of Compliance Monthly Rept for Jan 1968."

Accession Number: ML20090E072

Date Released: Saturday, October 26, 2024

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• ML20090E067 - "Div of Compliance Monthly Rept for Jan 1968." (1 page(s), 1/31/1968)
• ML20090E076 - Requests review of recent loss of instrument air.Info re loss of air & failure of turbine trip & MSIV requested in order to prepare operations experience rept. (1 page(s), 2/23/1968)
• ML20090E086 - Forwards memo summarizing info re MSIV failure.Sufficient info exists to write meaningful operations experience rept. (2 page(s), 3/19/1968)
• ML20090E094 - Submits info re 680112 failure of MSIV to respond properly during test.Cause determined to be rust that fell from valve stem into stem guide bushing.Valve stem packing replaced & valves modified to allow greater movement. (3 page(s), 3/19/1968)
• ML20090E103 - Expresses concern w/possible consequences of undetected steam leaks inside containment vessel.Probability of steam damage to vital equipment might be greatest hazard to existing containment concept. (1 page(s), 3/26/1968)
• ML20090E115 - Submits addl info re failure of main steam line isolation trip valve noted during 680403 site visit.No new info re cause of corrosion buildup at valve stem found. (3 page(s), 4/10/1968)
• ML20090E122 - Forwards memos describing failure of steam trip valves. Review & recommendations by 680901 requested. (1 page(s), 4/19/1968)
• ML20090E132 - Forwards memo & drawing to suppl Rept 213/68-1 re steam trip valves.Other facility operators should be alerted. (2 page(s), 4/10/1968)
• ML20090E133 - Forwards licensee ltr re failure of two steam isolation valves to close.Info re San Onofre response requested. (1 page(s), 1/29/1968)
• ML20090E147 - Submits rept re 680112 failure of two steam isolation valves to close.Caused by corrosion of valve stem & subsequent binding of stem.All four valves repacked w/new matl. (2 page(s), 1/24/1968)
• ML20090E150 - Inquiry Memorandum 50-213/68-A re 680112 failure of MSIV on steam generators 1 & 2.Caused by valve stem rust which fell into stem guide bushing.Valve stems cleaned & repacked w/another type of packing matl. (1 page(s), 1/24/1968)