ML20039C135
| 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 A S : 3 December 9, 1981 f
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Mr. James P. O'Reilly, Director _
is p,EC?i' LEO h'i Office of Inspection and Enforcement
.g U.S. Nuclear Regulatory Commission f
Region II - Suite 3100 d[
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101 Marietta Street A
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Atlanta, Georgia. 30303 9,
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Dear Mr. O'Reilly:
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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,
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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.
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Very truly yours,
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TENNESSEE VALLEY AUTHORITY L.' M la ngr Nuclear' Regulation Ino S fety
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Enclosure cc:
Mr. Victor Stello, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission f-Washington, DC 20555-g d
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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 Description of Deficier.cy
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As a result of an investigation procipted by IE lblletin 80-03, all 12 Standby Gas Treatment System (SCTS) charcoal adsorber beds furnished to i
TVO (ei ht to HartsvilleL'and four to Phipps Send) by CTI-Nuclear, S
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Cleveland, Ohio;' vere foUnd to have separatioEs between~the perforated 4
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 y'
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' ^^The separation of the SGTS cha'ece41.sdsorber~ perforated screens from C
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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 z nd'GE/EFDraun han,revieget the subjedt nonconformance, and as a 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 correetive ac'6tc96 on or be,f& e April 5, 1982.
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