ML17055C919

Forwards Safety Evaluation Re Util 870122 & 0309 Requests for Relief from Requirements of ASME Boiler & Pressure Vessel Code,Section XI Re Repair of Reactor Bldg Closed Loop Cooling Hx.Request Granted,Per 10CFR50.55a(q)(6)(i)

ML17055C919
Person / Time
Site:	Nine Mile Point
Issue date:	03/20/1987
From:	Rajender Auluck Office of Nuclear Reactor Regulation
To:	Mangan C NIAGARA MOHAWK POWER CORP.
Shared Package
ML17055C920	List: ML17055C919 ML17055C921
References
TAC-64230, NUDOCS 8703310421
Download: ML17055C919 (6)

Text

March 20, 1987 Docket No. 50-220 Mr. Charles V. Mangan Senior Vice President Niagara Mohawk Power Corporation 301 Plainfield Road

Syracuse, New York 13212

Dear Mr. Mangan:

DISTRIBUTION:

NRC PDR Local PDR BWD¹1 Rdg.

NMP1 File OGC (Bethesda)

EJordan HConrad TBarnhart (4)

BGrimes JPartlow CJamerson JKelly BWD1 Director ACRS (10)

RDiggs NThompson

SUBJECT:

REQUEST FOR RELIEF FROM ASME BOILER AND PRESSURE VESSEL

CODE, SECTION XI, PARAGRAPH IWA-4120 (TAC 64230)

Re:

Nine Mile Point Nuclear Station, Unit No.

1 By letter dated January 22, 1987, as supplemented March 9, 1987, Niagara Mohawk Power Corporation requested relief from the Amer ican Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section XI, Paragraph IWA-4120 requirement that repairs shall be performed in accordance with the design and construction code for a component.

This requirement is incorporated by reference in 10 CFR 50.55a.

The NRC can grant relief under 10 CFR 50.55a(g)(6).

Niagara Mohawk stated that Code repair of the Reactor Building Closed Loop Cooling (RBCLC) Heat Exchangers or component replacement is not practical at this time in light of the complexity of the weld repair and the lead time necessary to procure qualified replacement components.

The staff has reviewed the technical merits of the relief request and supporting information contained in the above letters.

The staff's safety evaluation concludes that the Code repair requirement is impractical to perform and has determined that the proposed alternatives to the described requirements will provide an acceptable level of quality and safety.

The staff also concludes that granting relief where the Code requirements are impractical is authorized by law and will not endanger life or property, or the common defense and security and is otherwise in the public interest considering the burden that could result upon Niagara Mohawk Power Corporation if the Code requirements were imposed upon Nine Mile Point, Unit l.

Accordingly, pursuant to 10 CFR 50.55a(g)(6)(i) of the Commission's regulations, Niagara Mohawk Power Corporation is granted the requested relief from the Code repair requirements for the RBCLC Heat Exchangers.

A copy of our Safety Evaluation is enclosed.

( '7osoio'iOi i7oo'

.PDR ADOCK 05000220 P

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Enclosure:

Safety Evaluation Sincerely, Original signed by Rajender Auluck, Acting Director BWR Project Directorate ¹1 Division of BWR Licensing cc:

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Docket No. 50-220 Mr. Charles V. Mangan Senior Vice President Niagara Mohawk Power Corporation 301 Plainfield Road

Syracuse, New York 13212

Dear Mr. Mangan:

DISTRIBUTION:

TBarnhart (4)

NRC PDR BGrimes Local PDR JPartlow BWD81 Rdg.

CJamerson NMPl File JKelly OGC (Bethesda)

BWDl Dire or EJordan ACRS (10 HConrad RDiggs NThom on

SUBJECT:

REQUEST FOR RELIEF FROM ASME BOILER AND PRESSURE VESS

CODE, SECTION XI, PARAGRAPH IWA-4120 (TAC 64230)

Re:

Nine Mile Point Nuclear Station, Unit No. I By letter dated January 22, 1987, as supplemented Mare 9, 1987, Niagara Mohawk Power Corporation requested relief from the Am ican Society of Mechanical Engineers (ASME) Boiler and Pressure Vess Code,Section XI, Paragraph IWA-4120 requirement that repairs shall performed in accordance with the design and construction code for a compop nt.

Niagara Mohawk stated that Code repair of the Reactor Building Closed

~oop Cooling (RBCLC) Heat Exchangers or component replacement is not pra ical at this time in light of the complexity of the weld repair and the lea time necessary to procure qualified replacement components.

The staff has reviewed the technical meri of the relief request and supporting information contained in the above lette s.

The staff's safety evaluation concludes that the Code r epair require nt is impractical to perform and has determined that the proposed alternat's to the described requirements will provide an acceptable level of quali y and safety.

The staff also concludes that granting relief where the Cod requirements are impractical is authorized by law and will not endanger life or property, or the common defense and security and is otherwise in th public interest considering the burden that could result upon Niagara Moha Power Corporation if the Code requirements were imposed upon Nine Mile P int, Unit l.

Accordingly, pursuant to 10 CFR 50.55a(g)(6)(i) of the Commi sion's regulations, Niagara Mohawk Power Corporation is aranted the equested relief from the Code repair requirements for the RBCLC Heat Exchan ers.

A copy of our Safety Evaluation is enclosed.

Sincerely, Rajender Auluck, Acting Director BWR Project Directorate kl Division of BWR Licensing

Enclosure:

Safety Eva ation cc:

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hlr. C. V. Mangan Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station, Unit No.

1 CC:

Troy B. Conner, Jr., Esquire Conner

& Wetterhahn Sui te -1050 1747 Pennsylvania

Avenue, N.

W.

Washinaton, D. C.

20006 Frank R. Church, Supervisor Town of Scriba R. D. g2

Oswego, New York 13126 Niagara Mohawk Power Corporation ATTN:

Mr. Thomas Perkins Plant Superintendent Nine Mile Point Nuclear Station Post Office Box 32

Lycomina, New York 13093 Resident Inspector U. S. Nuclear Regulatory Commission Post Office Box 126

Lycomina, New York 13093 John W. Keib, Esquire Niagara Mohawk Power Corporation 300 Erie Boulevard West

Syracuse, New York l3202 Regional Administrator, Reaion I U. S. Nuclear Regulatory Comm'ission 631 Park Avenue King of Prussia, Pennsylvania 19406 hlr. Jay Dunkleberger Division of Policy Analysis and Planning New York State Energy Office Agency Buildina 2 Empire State Plaza

Albany, New York 12223

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