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LER 75-021:on 750802,during routine surveillance test RV-30A,core spray sparger tripped at 6.4 psid instead of required 5 psid.Caused by setpoint drift.Redundant component operable.Sparger recalibr.W/750903 ltr.

Accession Number: ML20090D897

Date Released: Monday, April 13, 2020

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• ML20090D892 - LER 75-021:on 750802,during routine surveillance test RV-30A,core spray sparger tripped at 6.4 psid instead of required 5 psid.Caused by setpoint drift.Redundant component operable.Sparger recalibr.W/750903 ltr. (2 page(s), 9/3/1975)
• ML20090D902 - LER 75-022:on 750814,during routine operations,reactor bldg vent monitor spiked resulting in operation of emergency vent sys.Caused by failed solenoid & broken spring plunger nylon tip.Tip replaced. (1 page(s), 9/3/1975)
• ML20090D909 - LER 75-023:on 750826,iodine detection sensitivity milk sample found inadequate.Caused by failure of contractor to fulfill procedural requirements.Contractor reinstructed. (1 page(s), 9/3/1975)