IR 05000296/1978033

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Provides Followup Info to 781213 Ltr Re Reportable Occurrence BFRO-50-296/7833.Cites Excessive Water Leakage Rate for Isolation Valve Pairs & Describes Valve Equipment
ML18024A621
Person / Time
Site: Browns Ferry Tennessee Valley Authority icon.png
Issue date: 01/04/1979
From: Fox H
TENNESSEE VALLEY AUTHORITY
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 7901100291
Download: ML18024A621 (8)


Text

(0 iREGULATORY lFOBMATION DISTRIBUTION S M (BIDS)ACCESS I ON NBB~7901,1 0029.1 DOC.DATE: 79/01/04 NOTARIZED:

NO FACIL:50-296 BROGANS FERRY¹3, TFNNESSFE VALLFY AUTHORITY AUTH~NAME AUTHOR AFF I LI ATION FOX.H.'S~TENNESSEE VALLEY AUTHORITY RECI P.NAME RECI P I ENT AFF ILIATION O~BEI LLY, J.P.'*+BEG~2sATLANTA,OFF

~OF THE DIRECTOR SU8JECT!Provides followup info to 781213 1tr re reportable occurrence BFRO-50-296/7833.Cites excessive water leakage rate for isolation valve pairs 8, describes valve equipment.

DISTRIBUTION CODE: A002S COPIFS BFCEIVFD:LTR

~ENCL~SIZE<TITLE-INCIDENT REPORTS NOTES~'OCKET¹g 05 000296 0 RECI P I ENT ID CODF/NAME g ACTION: 05 BC 6/M W~INTERNALS FILE 15 NOVAK/KNIEL 17 AD FOB ENGR 19 I8,C SYS BB 21 AD SYS/PROJ 23 ENGR BR 24 KBEGER 26 HOUSTON E JORDAN/IE EXTFBNAL-03 LPDB 27 ACRS COP I ES LTTR ENCL 4 4 2 1 1.1 l,l 1.1 ,1 I I 1 0 Q 1 I 1 1 16 16 BEG I P I ENT I D CODE/NAME 02 NBC PDR I I MPA 16 EEB 18 PLANT SYS BR 20 AD PLANT SYS 22 REAC SAFT BR 24 COLLINS 25 PNR SYS BB 26 VOLLMER 04 NS IC COPIES LTTB ENCL 1 I 3 3 1 1 1 1 1 1 1 1 0 0 1 1 1 1 JAN 11~~79 TOTAL NUMBFR OF COPIES REQUIRED: LTTR 42 ENCL 42

'n~f ls A j1 (W II'l f'II F 4 W 1 lk TENNESSEE VALLEY AUTHORlTY CHATTANOOGA.

TENNESSEE 37401 0 January 4, 1979 Mr.James P.O'Reilly, Director<~"~pGULPTORY DOCKET FlLE COPY Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Dear Mr.O'Reilly's TENNESSEE VALLET AQTHORITT BRlÃNS KRKE NUCLEAR PLANT UHIT 3-DOCKET HO 50-296-FACILITY OPERATINC LICENSE DPR&8-SUPPL1ÃEHTAL INPORMATION TO REPORTABLE OCCURRENCE REPORT BPRO-50-296/7833 This letter is to provide you<<ith supplemental folio<<up information to my letter dated December 13, 1978.The referenced licensee event report (LER)dealt<<ith excessive leakage in isolation valves found during the'erformance of surveillance instruction (SI)4.7.A.2.g-3; the SI<<as being perforts3d as a scheduled activity during the unit 3 retcualing activity.At the time that BPRO-50-296/7833

<<as<<ritten, specific detail<<as not available; therefore,<<e comadtted to a detaiXed foXXo<<up<<hen such datail<<as mrailable During performance of the SI, tha total, as found,<<ater leakage fnna isolation valves texminating belo<<the suppression chamber.<<ater level<<as found to exceed the inventory restriction of 20,781 cubic feet for 30 days.Subsectuent investigation has revealed that the folio<<ing valve pairs had exc.'essive

<<ster leakage rate!71-4/78-580 71-32/71-592 73-23/73&03 74-57/74-58 74-60/74-61 74-71/74-72 75-57/75-58 1,5203 12,5788 36.1029 55,7843 14.0401 1.1664 16.0380-Detailed information for these valves is enclosed.790l.1,06>t l An Equal Opportunity Employer C Q k:JL'08<.'

Hr.James P.O'Reilly, Director January 4, 1979 Lapping of the seats and discs corrected the situation and was brought to within tolerances.

Very truly yours, TERi ESSEE VALLEY AUTHORITY H.S.Pox Director of Power Production Enclosure (3)cc (Enclosure):

Director (3)Office of Management Information and Program Control U.S.Nuclear Regulatory Commission Vashington, P.C.20555 Director (40)Office of Inspection and Enforcement U.S.Nuclear Regulatory Commissi n>washington, D.C.20555 W

pL e e.e 71-14 8 I I 71-580 10" 71-32 2I I 71-592 2" 73-23 16"73-603 20" Valve Size Globe Stop Check Swing Check Globe Stop Check Lift Check Globe Stop Check Swing Check Vendor Walworth Velan Velan Hancock Walworth Crane Chapman 300/j 150 jt 1508 6008 3008 1508 N/A Handwheel N/A N/A N/A Handwheel N/A N/A N/A N/A Handwheel N/A 74-57 18" Gate 74-58 4" Globe 74-60 12" Gate 74-61 12" Gate 74-71 18" Gate 74-72 4" Globe 75-57 3" Globe 75-58 3" Globe Walworth Walworth Walworth Walworth Walworth Walworth Crane Crane 450lJ 8 350 F 4508 9 350 F 450$/8 350 F 4508 8 350 F 450II 8 350 F 450!I 8 350 F 150//1500 Limitorque SMB Limitorque SMB Limitorque SMB Limitorque SMB Limitorque SMB Limitorque SMB Air Air Philadelphia Gear Corp.~Philadelphia Gear, Corp.Philadelphia Gear Corp.Philadelphia Gear Corp.Philadelphia Gear Corp.Philadelphia Gear Corp.Crane Flowmatics Crane Flowmatics JLH: JN 12/29/78