ML20205G175

Forwards Safety Evaluation Supporting Results of near-term Insp Contained in Util 860425 Final Core Support Barrel Insp Rept (post-Cycle 6),per Thermal Shield Recovery Program Commitments

ML20205G175
Person / Time
Site:	Saint Lucie
Issue date:	08/08/1986
From:	Thadani A Office of Nuclear Reactor Regulation
To:	Woody C FLORIDA POWER & LIGHT CO.
Shared Package
ML20205G181	List: ML20205G175 ML20205G200
References
NUDOCS 8608190420
Download: ML20205G175 (3)

Text

_

T o .

AUG 8HNh5 _

Distribution Docket No. 50-335 l Docket FileM' PKreutzer NRC PDR ETourigny Local PDR ACRS (10)

PBD-8 Reading Mr. C. O. Woody FMiraglia Group Vice President OGC-Bethesda Nuclear Energy EJordan Florida Power & Light Company JPartlow P. O. Box 14000 NThompson Juno Beach, Florida 33408 Gray File 3.7a

SUBJECT:

THERMAL SHIELD REC 0VERY PROGRAM - FINAL CORE SUPPORT BARREL INSPECTION REPORT (POST - CYCLE 6)

We have completed our review of your April 25, 1986 submittal on the above subject. Based upon the review, we conclude that you have completed your commitment to perform a near-term inspection, and that the next inspection of the repaired areas can coincide with the scheduled inservice inspection of the reactor vessel. Our safety evaluation is enclosed.

We note that you have completed the required reactor vessel examination for the first 10 year inspection interval, and the next scheduled examination

could occur toward the end of the second 10 year inspection interval. As you know, your first 10 year inspection interval ends in early 1988. Therefore, it could be quite some time before another detailed examination of the core support barrel (CSB) occurs. In this connection, we recommend that you evaluate the feasibility of performing an in place visual examination of any accessible repaired area of the CSB to the extent that this examination can be accomplished without defueling the entire reactor core. A conservative schedule for performing this limited examination, provided access is available, would be a refueling outage within a 4-6 year period from the last inspection. Although our recommendation is not a requirement, we consider a limited examination, if feasible, a prudent course of action to follow.

We also note that your Technical Specifications (TS) contain requirements which address core barrel movement (T.S. 3/4 4.11). As you know, the thermal shield

, and the CSB were found to have extensive damage at the end of Cycle 5. The most significant damage appeared to have occurred during Cycle 5. The basis statement for the core barrel movement TS states that this specification is provided to ensure early detection of excessive core barrel movement, if it should occur. In this regard, we recommend your consideration of either improving the quality of this Technical Specification or the deletion of it, if warranted in your opinion.

8608190420 860808 S PDR ADOCK 05000 G

i

,. 1 5

I~,.

I Please contact your project manager, E. Tourigny, at (301) 492-8007 if you I have any questions concerning this letter.

Ashok C. Thadani, Director PWR Project Directorate #8 Division of PWR Licensing-B

Enclosure:

As stated cc: w/ enclosure See next page PBD-8:

PK , 'tzer PBD-8:g A f ETourigny:jch PBD-AThadani

(

8/j/86 8/f/86 8/ P/86

%0 T. HM

, k'fE

Mr. C. O. Woody Florida Power & Light Company St. Lucie Plant cc:

Mr. Jack Shreve Mr. Allan Schubert, Minager Office of the Public Counsel Public Health Physicist Room 4, Holland Building Department of Health bnd Tallahassee, Florida 32304 Rehabilitative Ser/ ices 1323 Winewood Blvd.

Resident Inspector Tallahassee, Florida 32301 clo U.S. NRC 7585 S. Hwy A1A Regional Administrator, Region II Jensen Beach, Florida 33457 U.S. Nuclear Regulatory Commission Executive Director for Operations State Planning & Development 101 Marietta Street N.W., Suite 2900 Clearinghouse Atlanta, Georgia 30323 Office of Planning & Budget Executive Office of the Governor The Capitol Building Tallahassee, Florida 32301 Harold F. Reis, Esq. .

Newman & Holtzinger 1615 L Street, N.W.

Washington, DC 20036 Norman A. Coll, Esq.

McCarthy, Steel, Hector and Davis 14th Floor, First National Bank Building Miami, Florida 33131 Administrator Department of Environmental Regulation Power Plant Siting Section State of Florida 2600 Blair Stone Road Tallahassee, Florida 32301 O

Mr. Weldon B. Lewis, County +

Administrator St. Lucie County 2300 Virginia Avenue, Room 104 Fort Pierce, Florida 33450 Mr. Charles B. Brinkman, Manager Washington - Nuclear Operations Combustion Engineering, Inc.

7310 Woodmont Avenue Bethesda, Maryland 20814 1

-- _