ML20039C135

Revised Final Deficiency Rept Re Separation of Standby Gas Treatment Sys Charcoal Adsorber Perforated Screens,Initially Reported 800508.Screen to Frame Separations Will Be Repaired by 820405.Also Reported Per Part 21

ML20039C135
Person / Time
Site:	Hartsville, Phipps Bend
Issue date:	12/09/1981
From:	Mills L TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-80 10CFR-050.55E, 10CFR-50.55E, IEB-80-03, IEB-80-3, NUDOCS 8112280468
Download: ML20039C135 (2)

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. TENNESSEE VALLEY _ AUTHORUDNRC REGloN ::

CH ATTANOOGA[ TENNESSEE 374ok - be bbb dI'M 400 Chestnut Street Tower II 81 DEC 14 AS:3 ,

December 9, 1981

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,j h A Mr. James P. O'Reilly, Director _

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission

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Region II - Suite 3100 d[ DEClT D F9 s

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Atlanta, Georgia. 30303 b3 y77 ceu ez/ WUfs:

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Dear Mr. O'Reilly:

/;d) -yQ[,, / ,j HARTSVILLE AND PHIPPS BEND NUCLEAR PLANTS - REPORTABLE DEFICIENCY - U, STANDBY GAS TREATMENT SYSTEM CHARC0AL ADSORBER (NCR HTN NEB 80-02 AND P3N- r NEB 80-02) .,"

Initir.1 notification of the subject deficiency was made to NRC-0IE, _ ~

Region II, Inspector R. W. Wright on May 8, 1980. The final report was 4 submitted on September 29, 1981. As discussed with Inspector .-

F. S. Cantrell on November 24, 1981, we are encicsing our revised final , ,

report on _ the subject deficiency. We consider 10 CFR Part 21-applicable ,'

to this nonconformance.

If you have any questions regarding the subject @ ficiency, please call -

Jim Domer at FTS 858-2725. T c

Very truly yours, -

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TENNESSEE VALLEY AUTHORITY L .' M la ngr ,

Nuclear' Regulation Ino S fety ~

Enclosure cc: Mr. Victor Stello, Director (Enclosure) ,

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission -

Washington, DC 20555- -

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' An Equal Opportunity Employer .

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- - -! ( ,1 i ENCLOS1fRE i HARTSVILLE AND PHIPPS BEND NUCLEAR I'LANT STANDBY GAS TREATMENT S"SIEWCHARC0AL ADSODBER '

DEFICIENCIESi'CTI-PhCLEAR) 10CFR50.55(e) REPORT NO. 7)(REVISED FINAL)

NCR'S HTNNE38002 AND PBNNEB8002 s ,r

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Description of Deficier.cy / ,,' ,-

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,, As a result of an investigation procipted by IE lblletin 80-03, all 12 i Standby Gas Treatment System (SCTS) charcoal adsorber beds furnished to b., '

TVO (eiS ht to HartsvilleL'and four to Phipps Send) by CTI-Nuclear, 4

' Cleveland, Ohio;' vere foUnd to have separatioEs between~the perforated screens and the frames to which the%creens are mounted. These separations were caused-by broken or inadequat'e; spot welds which were the result of excessive cosmetic grinding. This condition violates the

,,_ ,,pu6 chase specification (C. F. Braun Specification .-165-01) which calls for g.j. -

, ', seal welding and careful inspection" of cbitical joints during and after y construction. The separations' cot:ld result. in loss o'f charcoal from the

, . bets-End' forr.atf on of bypa'ss, lea',

age paths :through the charcoal beds.

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' :"Pirity Implications T- ,

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C ' ^^The separation of the SGTS cha'ece41.sdsorber~ perforated screens from N// , their--frames dae,to improper or; broken spot welds could allow radioactive effluent to byp//s the adscrbersandto be released into the atmosphere.

~- This condition < d6g' rades the' perormance "o'r the SGTS, preventing it from

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pedorming its safetpfunction. ' '

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/ Corrective ActienL ?-

M lE 'iVA zand'GE/EFDraun han ,revieget the subjedt nonconformance, and as a resali,'have ,determi6kd, t. hat the faulty perferated screen to frame- welds should be repaimd. TVL will perform the ne'cessary repair using approved Lpbocedures to' bring the' perforated screen to frame welds into compliance witti requiremen't,a as desbribed in "CTI-Nuclear Design Report on Filtrad CarbhnAdsorbers'y(Report'No.60208-C-1). We anticipate completion of lr f A

correetive ac'6tc96 on or be,f& e April 5, 1982.

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