ML18037A306

Interim Deficiency Rept,Originally Reported on 800902,re Spent Fuel Pool Cooling Water Heat Exchangers.Addl Info, Furnished by Vendor,Being Evaluted.Affected Heat Exchangers Rejected.Final Rept Will Be Submitted by 810430

ML18037A306
Person / Time
Site:	Nine Mile Point
Issue date:	12/01/1980
From:	Dise D NIAGARA MOHAWK POWER CORP.
To:	Robert Carlson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8012090345
Download: ML18037A306 (6)

Text

REGUL'ATORY MFORRATION DISTRIBUTION SY R (RIDS)

ACCESSION NBR!80}2090345>>, DOC ~ DATE: 80/12/01 NOTARIZED! NO DOCK KIT FACIL:50-410 Nine Rile Point Nuclear Stationi Unit< 2i Niagara aloha 05000410 AUTH ~ NAME'UTHOR AFFCLll'ATION DISKiD.P. Niagara Rogawk Power Corp.

RECIP, NAME RECIIP>>IE>>VT< AFFILrIATION CARLSONFR AT ~ Region- }s Philadelphiai Reactor Construction & Ehgineerf

SUBJECT:

Interlim deficiency reptEotiginally submitted 800902qr e spent fuel. pool cop>>liing water heat'xcha'nger s ~ Addi infog furnished by vendo>>rrbeing eva'luted,Affected heat exchanger rept wi l be submit ted by 8'10430.

1 s'ejected.Frinal DISTRIBUTION CODE!: S010S COPIES RECEI>>>>ED:L>>TR g>> ENCL>> SIZE':

TI Tl E: Cons t r uc t i on* De f i c i ency Repo r t ( } OCFR50. 55KO NOTES:

RECIPIENT COP>>IES RECIP.IENTr COPIES ID CODE/1'tA>>REl LlTTR ENCL'D CODE/MAREi L>>TTR ENCLf ACTION: A/D LiICENSNG 04 1>> 1 YOUNGBLOOD B 05 1 1 RUSHBROOK'FR ~ . 06 >>

1 , 1 'IPKRgK ~ 07 i. 1 INTERNALS! AD/RC I/IE>> 17 1

"'1 AEOD 18 1 1 ASLBP/J' HARD II tD/DIR NUN F>>>>C ISi 1 1 KDO & STAFFr 19 1 '1 EQUIP QUALl'R}1 1 1 HYD/GEO>> BR= 22 1 1 I &Ki 09 LrIC. QUALr BR 12 1 1 MPA 20 1 1 NRC" PDR 02 1 1 OELO. 21'A

'1 RE>>V 13 1 1 BR 14 1 '1 F>>ILKr 'RUTHKRFORDFWDIEr, "'1 REG 0 1, 1 1 1 DEV 21, 1 EXTERNALi: ACRS 16 16 '16 LPDR 03 NSIC>> 08 1 r ~ t' 0 1989 TOTAL NURBKR OF>> COP1IES REQUIRED: L>>TTR 39 ENCLl 39

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LI V NIAGARA A V MOHAWK NIAGARA MOHAWK POWER CORPORATION/300 ERIE BOULEVARD WEST. SYRACUSE. N.Y. 13202/TELEPHONE (315) 474-1S11 cn r.

<<f r C/>, i December 1, 1980 COC C/) icos " C0 C"a ~

~CO KN n 1C Office of Inspection and Enforcement tTg CA, Region I Attention: Mr. R. T. Carlson, Chief Reactor Construction and Engineering Support Branch U. S. Nuclear Regulatory COWIission 631 Park Avenue King of Prussia, PA 19406

Dear Mr. Carlson:

Re: Nine Mile Point Unit 2 Docket No. 50-410 In accordance with Paragraph 50.55 (e) (3) of the Commission's regulations, attached is an interim report regarding the potential deficiency involving the spent fuel pool heat exchangers at Nine Mile Point Unit 2. A final report will be provided by April 30, 1981.

Very truly yours, NIAGARA MOHAWK POWER CORPORATION

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Donald P. Disc Vice President Engineering PEF:ja At tachment xc;~Directo>=ot Inspect onmnd Enf orcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555

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INTERIM REPORT SPENT FUEL POOL COOLING WATER HEAT EXCHANGERS POTENTIALLY REPORTABLE DEFICIENCY 10CFR50.55(e)

NINE MILE POINT UNIT 2 Docket No. 50-410 Descri tion of Deficienc As reported to Mr. R. Feil of the Nuclear Regulatory Coranission Region I staff on September 2, 1980, a potentially reportable deficiency involving the spent fuel pool cooling water heat exchangers was discovered during a review of documentation. This was the subject of our letter to Mr. R. Carlson of the NRC on October 2, 1980.

The impact test data for several heat exchanger shell materials do not contain sufficient information to determine whether or not the specification and ASME Code impact test acceptance criteria are met.

Descri tion of Findin s and Corrective Action The heat exchanger Vendor has furnished additional information necessary to evaluate the problem. The information is being evaluated and its safety implications analyzed. Initial corrective action to date has been to temporarily reject the affected heat exchangers for use. Final corrective action to resolve the problem will be made after reviewing the analysis of the information recently furnished by the heat exchanger Vendor. Additionally, possible corrective actions to prevent future problems of this nature are being evaluated and will be addressed in the final report.

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