ML18010A363

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Forwards Safety Evaluation Granting 910404 Request for Relief from IWV-3520 Requirement of ASME Code,Section XI for Check Valve ICS-294 in RWST Supply Line to Charging Pump Supply Header
ML18010A363
Person / Time
Site: Harris Duke Energy icon.png
Issue date: 08/13/1991
From: Adensam E
Office of Nuclear Reactor Regulation
To: Eury L
CAROLINA POWER & LIGHT CO.
Shared Package
ML18010A364 List:
References
TAC-80093, NUDOCS 9108150206
Download: ML18010A363 (6)


Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555

'ugust 13, 1991 Docket No. 50-400 Mr. Lynn Eury Executive Vice President Power Supply Carolina Power 5 Light Company Post Office Box 1551 Ralei'gh, North Carolina 27602

Dear Mr. Eury:

'UBJECT:

INSERVICE TESTING (IST)

PROGRAM RELIEF REQUEST FOR SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 (TAC NO. 80093)

By letter dated April 4, 1991, you requested relief from the exercising require-ments of Section XI of the American Society of Mechanical Engineers (ASME)

Boiler and Pressure Vessel Code (Code) pursuant to 10 CFR 50.55a.

Relief was requested from the IWV-3520 requirement of Section XI for check valve ICS-294 in the refueling water storage tank supply line to the charging pump supply header.

You proposed to partial-stroke exercise the valve at cold shutdown and full-stroke exercise the valve at refueling.

In accordance with the requirements of 10 CFR 50.55a, the NRC staff has reviewed your request.

The staff concluded that performance of a full-stroke exercise at each refueling outage and partial stroke exercise at each cold shutdown is a reasonable alternative to the ASME Code requirement to full-stroke exercise this valve during cold shutdown.

Meeting the ASME Code requirement would require system modification which would be costly and burdensome to the licensee.

We have determined that the exer'cising requirements are impractical for the subject check valve for which relief is being granted and, pursuant to 10 CFR 50.55a(g)(6)(i), that the granting of relief is authorized by law, will not endanger life or property or the common defense and security, and is otherwise in the public interest.

In making this determination, we have given due consideration to the burden that could result if those requirements are imposed on your facility.

This letter grants the relief.

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If you need any clarification, please feel free to contact your Project

Manager, Hs. Brenda Mozafari at (301) 492-0020.

The Safety Evaluation related to this request is enclosed.

Sincerely,

/s/

Elinor G. Adensam, Director Project Directorate II-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Enclosure:

As stated cc:

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W Mr. L. W. Eury Carolina Power 5 Light Company Shearon Harris CC:

Mr. H. Ray Star ling Manager - Legal Department Carolina Power 5 Light Company P. 0.

Box 1551

Raleigh, North Carolina 27602 Resident Inspector /Harris NPS c/o U. S. Nuclear Regulatory Commission Route 1, Box 315B New Hill, North Carolina 27562 Mr. R. B. Richey, Vice President Harris Nuclear Project Harris Nuclear Plant P. 0.

Box 165 New Hill, North Carolina 27562 Mr. H. A. Cole

'pecial Deputy Attorney General State of North Carolina P. 0. Box 629 Raleigh, North Carolina 27602 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street Suite 2900 Atlanta, Georgia 30323 Mr. C. S. Hinnant Plant General Manager Harris Nuclear Plant P. 0. Box 165 New Hill, North Carolina 27562 Mr. Dayne H. Brown,- Director Division of Radiation Protection N. C. Department of Environmental, Commerce 5 Natural Resources P. 0.

Box 27687 Raleigh, North Carolina 27611-7687

DISTRIBUTION fl~kt F'1 NRC PDR LPDR T. Murley/F. Miraglia J. Parti ow C. Rossi S.

Varga G. Lainas P. Anderson B. Mozafari OGC G. Hill 4)

ACRS (10 GPA/PA OC/LFMB L. Reyes, RII PDII-1 Reading File-12-G-18 12-G-18 11-E-4 14-E-4 14-H-3 15-B-18 P1-37 P-315 17-F-2 AR-2015 Harris cc:

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