ML20217J608

Forwards SER Re 970904 & 22 Requests for Approval of Plant, Unit 3 RPV Alternative Reactor Vessel Weld Insps,Per Provisions of 10CFR50.55a(g)(6)(ii)(A095) for Next Two Operating Cycles

ML20217J608
Person / Time
Site:	Peach Bottom
Issue date:	10/07/1997
From:	Stolz J NRC (Affiliation Not Assigned)
To:	Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
Shared Package
ML20217J612	List: ML20217J608 ML20217J616
References
IEIN-97-063, IEIN-97-63, TAC-M99509, NUDOCS 9710210193
Download: ML20217J608 (4)

Text

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"%g\ UNITED STATES (o 27T y i NUCLEAR REGULATORY COMMISSION

• WASHINGTON, D.C. 2M66-0001

/

• • • • • October 7, 1997 Mr. George A. Hunger, Jr. '

Director-Licensing, MC 62A-1 PECO Energy Company Nuclear Group Headquarters Correspondence Control Desk P.O. Box No. 195 Wayne, PA 19087-0195 SURJECT: Al.TERNATIVE TO REACTOR PRESSURE VESSEL (RPV) CIRCUMFERENTIAL WE INSPECTIONS, PEACH BOTTOM ATOMIC POWER STATION, UNIT 3 (TAC NO.

i M99509)

References:

1. Letter from G. A. Hunger, Jr., PECO Energy Company (PECO), to U.S. Nuclear Regulatory Comission (NRC), dated April 29, 1997

2. Letter from J. F. Stolz, ';RC, to G. A. Hunger, Jr., PECO, dated July 2, 1997

Dear Mr. Hunger:

By letter dated September 4, 1997, as supplemented by letter dated September 22, 1997, PECO requested NRC approval of Unit 3 RPV alternative reactor vessel weld examinations pursuant to the provisions of 10 CFR 50.55a(g)(6)(ii) with information(A)(5) for the next two operating cycles. This is consistent contained in Information Notice (IN) 97-63, " Status of NRC Staff Review of BWRVIP-05."

You have proposed examin:ng reactor vessel longitudinal shell welds to the maximum extent practical from the inner diameter, within the constraints of vessel internal restrictions. The extent of weld examination coverage anticipated for the longitudinal shell welds is identified on Table 1 of Reference 1, as approved in the Reference 2 letter. Your current examination

. plan is designed to provide longitudinal weld coverage, however, you indicated that incidental coverage will result in an estimated portion of 2-3 percent of the intersecting horizontal weld.

You proposed these inspections as an alternative to the augmented examinations specified in 10 CFR 50.55a(g)(6)(ii)(A)(2) for circumferential welds, and as an alternative to the inservice inspection requirements for circumferential welds specified it, the American Society of Mechanical Engineers (ASME) Code,Section XI, 1980 Edition with Winter 1981 Addenda. Further, you have described operator training, and have established procedures that should reduce the probability of ccid over-pressure transients during the next two operating periods.

Therefore, we conclude that PECO can operate Unit 3 during the next two operating periods with an acceptable level of quality and safety, and can delay Unit 3 RPV circumferential weld inspection for two operating periods. g Therefore, the proposed alternative is authorized pursuant to 10 CFK 50.55a(a)(3)(i). gg g 9710210193 971007 i gDR ADOCK 0500 8 kpp gt, ry p ((;}

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G.. Hunger. -

2-Our evaluation and conclusions are contained in tho enclosed Safety Evaluation.

Sincerely,

/s/

John F. Stolz, Director Project Directorate I-2

- Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket.No. 50-278

Enclosure:

. Safety Evaluation cc w/ encl:- See next page

.DISTRIBUTI0t[1 Docket File -MPadovan ACRS KWichman-PUBLIC M0'Brien BMcCabe TSu111 van PDI-2 Reading ' THa. ris <r n.n sr> CAnderson, RGN-I BBoner- OGC KKarwoski JStol z -: GHill(2)- KKavanagh-0FFICE-- PDI-2/PM-_ ,- PDirl/M EMCB H OGC [<Cd PDkND NAME' 'LPadovan:r[ khd[ ESullivY [dvA r/Mt f JSth DATE S /4 /97 6YMT/97 9 /%/97 /s / 2 /97 /0/)/97 0FFICIAL RECORD COPY 'A L DOCUMENT NAME: PB99509.REL-e

G. Hunger W Our evaluation and conclusions are contained in the enclosed safety '

evaluation.

Sincerely, g .

o n F. Stolz, Director l

P oject Directorate I-ivision of Reactor Projects - I/II.

1 Office of Nuclear Reactor Regulation Docket No. 50-278

Enclosure:

Safety Evaluation cc w/ encl: See next page

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- Mr. George A. Hunger, Jr. Peach Bottom Atoalc Power Station, PECO Energy. company. Units 2 and 3 cc:

-J. W. Durham, Sr., Esquire Chief-Division of Nuclear Safety Sr. V.P. & General Counsel PA Dept. of PECO Energy Company Environmental Resources 2301 Market Street, S26-1 P.O. Box 8469 Philadelphia, PA 19101 Harrisburg, PA 17105-8469 PECO-Energy Company ATTN: Mr. T. N. Mitchell, Vice President Board of Supervisors Peach Bottom Atomic Power Station Peach Bottom Township 1848 Lay Road R. D. #1 Delta, PA 17314 Delta, PA 17314 PECO Energy Company- Pu'lic o Service Commission of Maryland ATTN: Regulatory Engineer, A4-SS Engineering Division Peach Bottom Atomic Power Station Chief-Engineer 1848 Lay Road 6 St. Paul Centre Delta, PA 17314 Baltimore, MD 21202-6806 Resident Inspector Mr. Richard McLean U.S. Nuclear Regulatory CO.amission Power Plant and Environmental.

Peach Bottom Atomic Power Station Review Division P.O. Box 399 Department of Natural Resources Delta, PA 17314 B-3, Tawes State Office Building Annapolis, MD- 21401 Regional Administrator, Region I U.S. Nuclear Regulatory Commission Dr. Judith Johnsrud 475 Allendale Road National Energy Committee King of Prussia, PA 19406 Sierra Club 433 Orlando Avenue Mr. Roland Fletcher State College, PA 16803 Department of Environment 201 West Preston Street Manager-Bu3iness & Co-owner Affairs Baltimore, MD 21201 Public Service Electric and Gas Company

~A. F. Kirby, III P.O. Box 236 External Operations - Nuclear Hancocks Bridge, NJ 08038-0236 '

Delmarva Power & Light Company P.O. Box 231 Wilmington, DE. 19899 Manager-Peach Bottom Licensing PECO Energy Company PECO Energy Company Nuclear Group Headquarters Plant Manager Correspondence Control Desk Peach Bottom Atomic Power Station P.O. Box No. 195 1848 Lay Road Wayne, PA 19087-0195 Delta, PA 17314

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