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Forwards supplemental LERs 94-013-01,96-011-01,96-018-01, 96-020-01,96-022-01,96-023-01,96-028-01 & 96-029-01.Encl LER suppls being issued to retract originally proposed corrective actions,no longer implemented.

Accession Number: ML20149B321

Date Released: Monday, October 28, 2024

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• ML20149B317 - Forwards supplemental LERs 94-013-01,96-011-01,96-018-01, 96-020-01,96-022-01,96-023-01,96-028-01 & 96-029-01.Encl LER suppls being issued to retract originally proposed corrective actions,no longer implemented. (1 page(s), 7/7/1997)
• ML20149B368 - LER 94-013-01:on 940505,HPSI common discharge header relief valve found to be lifting during performance of surveillance procedure.Caused by slightly high shutoff head of "B" HPSI pump coupled w/drifting.HPSI pump placed in trip pull out. (5 page(s), 7/7/1997)
• ML20149B406 - LER 96-011-01:on 960517,postulated break size could result in inadequate core cooling occurred.Caused by failure to recognize or analyze worst case adverse assumptions for entry into two path recirculation.Procedures changed. (4 page(s), 7/7/1997)
• ML20149B410 - LER 96-018-01:on 960822,determined that feedwater regulating bypass valves would not fully isolate feedwater flow as required for main steam line break inside containment.Caused by erroneous assumption.Mod implemented prior to startup. (3 page(s), 7/7/1997)
• ML20149B424 - LER 96-020-01:on 960709,determined that fuel transfer tube bellows,containment penetration had not been included in 10CFR50,App J test program.Caused by administrative oversigt due to failure to recognize bellows.Penetration modified. (3 page(s), 7/7/1997)
• ML20149B433 - LER 96-022-01:on 960901,RCS loop stop valves opened without timely boron sample.Caused by personnel error.Procedures revised. (4 page(s), 7/7/1997)
• ML20149B448 - LER 96-023-01:on 960814,three on four containment air recirculation fans did not meet TS requirement for air flow rates.Caused by test method variability.Containment air recirculation adjusted. (3 page(s), 7/7/1996)
• ML20149B464 - LER 96-028-01:on 961016,determined that containment personnel airlock hydraulic sys does not meet requirements of 10CFR50,App J for local leak rate testing.Caused by administrative oversight.Hydraulic sys modified. (3 page(s), 7/7/1997)
• ML20149B469 - LER 96-029-01:on 961024,primary auxiliary bldg internal flood protection design deficiencies identified.Caused by inadequate design review & inadequate design implementation. Floor penetrations modified. (4 page(s), 7/7/1997)