View source for 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

{{Adams
| number = ML19345B503
| issue date = 11/21/1980
| title = 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
| author name = Shively C
| author affiliation = ARKANSAS POWER &amp; LIGHT CO.
| addressee name = 
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION IV)
| docket = 05000313
| license number = 
| contact person = 
| document report number = LER-80-016-03X, LER-80-16-3X, NUDOCS 8012010404
| package number = ML19345B499
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 1
}}
{{LER
| Title = 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
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000313
| LER year = 1980
| LER number = 16
| LER revision = 3
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

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UPDATE REPORT - PREVIOUS REPORT DATE 8/27/80 Nmc FORM J64 U. S. NUCL E AM REGULATORY COMahSSION LICENSEE EVENT REPORT EXHIBIT A CONTROL SLOCK: l l l l l l (ptg Ast pMINT OR TvPE ALL REQUIRED tNFORMATIONI l AlR l Al Nl 0 l 1 lgln0 j0 l -l0 l0 l 0l q 0 l-l 0 l0 lgr$ l1 l 1;l l 1lgl p clat nalg o i 9
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HE, ORT Daft 80 EVENT DESCRIPTION AND PROBASLE CONSEOUENCES h IDurino hvdrocen Durae system surveillance testing of Loop B per operating i o a ran tprocedure 1104.33 Supplement II, proper flow through the system was un-i ITT71 lable to be obtainec'. Hydrogen purge Loop A was verified operable per the i ilast surveillance test.
Similar to LER's 50-313/77-018, 79-001, 80-009. i o s tReportable per T.S. 6.12.3.2.(b).
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CAUSE DESCR.PTION AND CORRECflVE ACTIONS h
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Cuse of flow degradation was determined to be due to rust scale being i
, o m flodged in the following hydrogen purge check valves:
HPA-4, HPA-10, HPA,
1128.
Valves were cleaned.
Source of moisture identified as Service Water, l
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m 11eaking by seals on idle ventilation fans, VSF30A/B, VSF37A/B.
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m IWater Solenoid Valves added, linked to fan geration.
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