ML20057C226

Requests Inservice Insp (ISI) program-required Volumetric NDE of Four 6-in Welds Associated W/Valves MSV-55 & 56,to Be Be Performed During Next Appropriate Scheduled Plant Outage & NRC to Be Notified of Results of Exam

ML20057C226
Person / Time
Site:	Crystal River
Issue date:	09/14/1993
From:	Berkow H Office of Nuclear Reactor Regulation
To:	Beard P FLORIDA POWER CORP.
References
TAC-M82173, NUDOCS 9309280095
Download: ML20057C226 (3)

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UNITED STATES

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NUCLEAR REGULATORY COMMISSION k*y4/

WASHINGTON D.C. 2055"HD001 September 14, 1993 Docket No. 50-302 Mr. Percy M. Beard, Jr.

Senior Vice President, Nuclear Operations Florida Power Corporation ATTN: Manager, Nuclear Licensing (NA21)

Crystal River Energy Complex 15760 W Power Line Street Crystal River, Florida 34428-6708

SUBJECT:

CRYSTAL RIVER UNIT 3 - INTERMEDIATE BUILDING HIGH ENERGY LINE BREAK (TAC NO. M82173)

Our letter dated December 16, 1992, on this subject, documented our agreement with your conclusion that the 3-inch ends of the 6-inch x 3-inch reducer is the most likely location for a terminal end break in the steam piping to the emergency feedwater pump turbine.

The agreement was contingent on completion of surface and volumetric non-destructive examination (NDE) of the four 6-inch welds with no indications requiring acceptance by ASME Section XI analysis.

Your March 4, 1993, letter stated your intent to perform an Inservice Inspection (ISI) program-required volumetric NDE on two of the four welds.

You stated that volumetric examination will include the weldolet to the main steam header and weldolet to the 6-inch end of the reducer that is connected to valve MSV-56, but not comparable welds associated with MSV-55. As justification, you stated that the material, construction, and operating conditions in the areas are similar.

In addition, you noted that the weld areas are not easily accessible, asbestos insulation is present, and a double-ended guillotine rupture is not probable.

You do not intend to perform surface NDE.

Acceptable examination of the welds associated with MSV-56 alone will not provide reasonable assurance of an acceptable level of quality and safety.

Your April 21, 1992, letter identified that your design would not be in full compliance with 10 CFR 50.49 if a break were to be postulated in either of the 6-inch lines. Therefore, we request that you complete the examination of the welds associated with both MSV-55 and MSV-56 to provide the necessary assurance that such a break will not occur.

You also stated that you will inform us by November 30, 1993, whether the examinations will be performed during Refuel 9.

We again request that you

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perform the exa'minations during th'e next appropriate scheduled plant outage and notify us of the results of the examination.

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-Sincerely,.

(Original Signed By)

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Herbert N. Berkow, Director Project Directerate II-2 1

Division of Reactor Projects - I/II 1

Distribution Docket; File /NRC' & Local PDRs PDII-2 Reading.

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Mr. Percy M. Beard Crystal River Unit No.3 Florida Power Corporation Generating Plant cc:

Mr. Gerald A. Williams Mr. Joe Myers, Director Corporate Counsel Div. of Emergency Preparedness Florida Power Corporation Department of Community Affairs MAC-A5A 2740 Centerview Drive P. O. Box 14042 Tallahassee, Florida 32399-2100 i

St. Petersburg, Florida 33733 Mr. Bruce J. Hickle, Director Chairman Nuclear Plant Operations Board of County Commissioners Florida Power Corporation Citrus County Crystal River Energy Complex 110 North Apopka Avenue 15760 W Power Line Street Inverness, Florida 32650 Crystal River, Florida 34428-6708 Mr. Robert B. Borsum Mr. Rolf C. Widell, Director B&W Nuclear Technologies Nuclear Operations Site Support 1700 Rockville Pike, Suite 525 Florida Power Corporation Rockville, Maryland 20852 Crystal River Energy Complex 15760 W Power Line Street Regional Administrator, Region II Crystal River, Florida 34428-6708 U. S. Nuclear Regulatory Commission 101 Marietta Street, N.W., Suite 2900 Senior Resident Inspector Atlanta, Georgia 30323 Crystal River Unit U.S. Nuclear Regulatory Commission Mr. Bill Passetti 6745 N. Tallahassee Road Office of Radiation Control Crystal River, Florida 34428 Department of Health and Rehabilitative Services Mr. Gary Boldt 1317 Winewood Blvd.

Vice President - Nuclear Tallahassee, Florida 32399-0700 Production Florida Power Corporation Administrator Crystal River Energy Complex Department of Environmental Regulation 15760 W Power Line Street Power Plant Siting Section Crystal River, Florida 34428-6708 State of Florida 2600 Blair Stone Road Tallahaseee, Florida 32301 Attorney General Department of Legal Affairs The Capitol Tallahassee, Florida 32304 e