ML20138E151

Forwards Safety Evaluation of 850809 Relief Request from Inservice Insp Requirements Re Hydrostatic Pressure Testing of Pipe Section in Charging Sys & Surface Exam of Valve Pressure Boundary.Relief Granted

ML20138E151
Person / Time
Site:	Prairie Island
Issue date:	10/11/1985
From:	Harold Denton Office of Nuclear Reactor Regulation
To:	Musolf D NORTHERN STATES POWER CO.
Shared Package
ML20138E154	List: ML20138E151 ML20138E166
References
TAC-59523, NUDOCS 8510240589
Download: ML20138E151 (2)

Text

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October 11, 1985 Docket No. 50-306 DISTRIBUTION:,

uutnET TILE- PMKREUTZER NRC'PDR ACRS (10)

Mr. D. M. Musolf, Manager L PDR Gray File Nuclear Support Services Department ORB #3 Rdg Northern States Power Company HTHOMPSON 414 Nicollet Mall 0 ELD Midland Square - 4th Floor EJordan Minneapolis, Ninnesota 55401 BGrimes JPartlow

Dear Mr. Musolf:

DCDi IannI

SUBJECT:

RELIEF REQUESTS FROM INSERVICE INSPECTION (ISI) REQUIREMENTS -

PRAIRIE ISLAND NUCLEAR GENERATING PLANT UNIT 2 RELIEF REQUEST NOS. 29 AND 66 By letter dated August 9, 1925 you requested relief from requirements of the ASME Boiler and Pressure Vessel Code,Section XI, concerned with the hydrostatic pressure testing of a pipe section in the charging system and the surface examination of a valve pressure boundary at the Prairie Island Nuclear Generating Plant Unit No. 2. The proposed relief request, appearing as Relief Request Nos. 29 and 66 in your inservice inspection program, is related to applying the design pressure during the hydrostatic pressure test of a section of pipe in the charging system and the visual examination of the internal pressure boundary surface of a 10-inch gate valve.

Pursuant to 10 CFR 50.55a(g)(6)(1) the Commission recognizes that the requirements of the ASME Section XI Code may be impractical to implement at facilities because of limitations of design, geometry and material of construction of components and systems. We have reviewed your submittal and determined that the code requirements for the examination of the com-ponents described above are impractical. We conclude that the proposed reliefs will not endanger life or property or the common defense and security and it is otherwise in the public interest giving due consideration to the burden upon the licensee that could result if the requirements were imposed upon the facility.

A copy of our related Safety Evaluation is enclosed.

Sincerely, Odihd Sped 4 8510240589 851011 LER.km

$DR ADOCK 0 g6 Harold R. Denton, Director Office of Nuclear Reactor Regulation

Enclosure:

MTEB* OELO*

Safety Evaluation BDLiaw 9/19/85 9/27/85 cc w/ enclosure:

See next page

• See previous concurrence page ORB #3:DL* ORB #3:DL* ORB #3:DL* *AD:0R *D/DL DD/NRR D/fd PKreutzer DCDi Ianni:dd EJButcher Glainas HThompson DEisenhut HDeMon 9/18/85 9/19/85 9/23/85 10/3/85 10/4/85 / /85 (e /(p /85 J

Mr. D. M. Musolf Prairie Island Nuclear Generating Plant Northern States Power Company Gerald Charnoff, Esq.

Shaw, Pittman, Potts and Trowbridge 1800 M Street, NW Washington, DC 20036 Executive Director Minnesota Pollution Control Agency 1935 W. County Road, B2 Roseville, Minnesota 55113 Mr. E. L. Watzl, Plant Manager Prairie Island Nuclear Generating Plant Northern States Power Company Route 2 Welch, Minnesota 55089 Jocelyn F. Olsen, Esq. -

Special Assistant Attorney General Minnesota Pollution Control Agency 1035 W. County Road, B2 Roseville, Minnesota 55113 U.S. Nuclear Regulatory Commission Resident Inspector's Office Route #2, Box 500A Welch, Minnesota 55089 Regional Administrator USNRC, Region III Office of Executive Director for Operations 799 Roosevelt Road Glen Ellyn, Illinois 60137 Mr. William Miller, Auditor Goodhue County Courthouse Red Wing, Minnesota 55066 l

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