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Forwards listed LER suppl repts for Palo Verde Units 1 & 2.
Accession Number: ML17311A999
Date Released: Tuesday, July 31, 2018
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- ML17311A998 - Forwards listed LER suppl repts for Palo Verde Units 1 & 2. (4 page(s), 6/28/1995)
- ML17311B000 - LER 94-005-02:on 940619,determined that CPC channel D,Delta- T power signal could no longer be adjusted per TS requirements.Caused by loop 2 hot leg temp RTD fluctuations. Channel calibrated & declared operable. (18 page(s), 6/28/1995)
- ML17311B001 - LER 94-006-01:on 941021,identified that actual flow rate on spray pond pumps may be exceeding design flow rates.Caused by oversized orifices in spray pond return lines. Administrative controls established to counter condition. (18 page(s), 6/28/1995)
- ML17311B002 - LER 94-007-01:on 941103,identified that thermal overload protection for CP refueling isolation valves not being tested per TS SR 4.8.4.2.1.Caused by inadequate procedures. Post maintenance test procedure revised. (10 page(s), 6/28/1995)
- ML17311B003 - LER 94-009-01:on 941118,determined that letdown isolation valve could not satisfy 10CFR50,App R related requirement. Caused by personnel error.Procedure changes implemented which eliminate reliance on isolation valve during shutdown. (16 page(s), 6/28/1995)
- ML17311B004 - LER 94-010-01:on 930409,identified that close torque switch contact bar for shutdown cooling suction isolation valve misaligned.Caused by torque loads experienced by operator during unseating of valve disk.Compression springs replaced. (16 page(s), 6/28/1995)
- ML17311B005 - LER 94-004-02:on 941006,Train A declared inoperable due to projection of test results indicated battery banks did not meet 90% criteria of TS SR 4.8.2.1.e.Caused by loss of positive active matl.Proposed TS amend submitted. (24 page(s), 6/28/1995)
- ML17311B006 - LER 94-008-01:on 940929,identified that preventive maintenance task for calibrating boronometer overdue.Caused by personnel error.Procedure revised to address condition. (12 page(s), 6/28/1995)
