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Forwards revisions to LERs for RO-287/78-02,269/78-01, 287/78-01,270/77-17,269/77-31 & 270/78-02 submitted on 780126,0203 & 17.

Accession Number: ML19316A426

Date Released: Tuesday, November 26, 2019

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• ML19316A425 - Forwards revisions to LERs for RO-287/78-02,269/78-01, 287/78-01,270/77-17,269/77-31 & 270/78-02 submitted on 780126,0203 & 17. (2 page(s), 2/28/1978)
• ML19316A434 - LER 78-002/03L-01:on 780105,isolation valve FDW-108 failed to close.Caused by inability to withstand necessary environ. Valves FDW-106 & 108 will be replaced by appropriately designed valves. (1 page(s), 2/28/1978)
• ML19316A439 - LER 78-001/03L-01:on 780105,Keowee Hydro Unit 2 failed to start.Caused by failure of breaker DB-26 to close on first attempt.Breaker verified operable on subsequent operation. Insp & servicing resulted in no further action. (1 page(s), 2/28/1978)
• ML19316A441 - LER 78-001/03L-01:on 780103,valve 3LP-14 failed to cycle manually.Caused by unaligned engaging collar slipping while trying to cycle.Collar realigned,setscrew & handwheel tightened. (1 page(s), 2/28/1978)
• ML19316A444 - LER 77-031/03L-01:on 771229,increase in reactor coolant leakage noted.Caused by analog channel 1 WR transmitter error due to steam from blown switch.Transmitter recalibr. Valving out switch stopped leak. (1 page(s), 2/28/1978)
• ML19316A452 - LER 78-002/03L-01:on 780118,reactor protection sys channel D flow indication found high.Caused by transmitter failure due to blown gasket.Gasket replaced & leak stopped.Transmitter will be replaced unless it can be recalibr. (1 page(s), 2/28/1978)