05000313/LER-1980-016-03, Proper Flow Through Hydrogen Purge Sys Could Not Be Obtained.Caused by Rust Scale Being Lodged in Check Valves HPA-4,-10 & -128.Valves Cleaned.Svc Water Solenoid Valves Added to Ventilation Fans

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• 05000313/LER-1980-016-03, /03X-1:on 800611,during Hydrogen Purge Sys Surveillance Testing of Loop B,Proper Flow Through Sys Was Unobtainable.Caused by Lodging of Rust Scale in Hydrogen Check Valves HPA-4,HPA-10 & HPA-128.Valves Cleaned