ML18029A536

Forwards Safety Evaluations & BNL Technical Evaluation Rept Re post-implementation Audit Review of plant-unique Analysis Rept.Mods in Accordance w/NUREG-0661 or Acceptable Tech Spec Changes Requested

ML18029A536
Person / Time
Site:	Browns Ferry
Issue date:	05/06/1985
From:	Vassallo D Office of Nuclear Reactor Regulation
To:	Parris H Tennessee Valley Authority
Shared Package
ML18029A537	List: ML18029A536 ML18029A538 ML18029A539
References
GL-83-002, RTR-NUREG-0661, RTR-NUREG-661 NUDOCS 8505160204
Download: ML18029A536 (5)

Text

May 6, 1985 Docket Nos. 50-259 50-260 and 50-296 Mr. Hugh G. Parris Manager of Power Tennessee Valley Authority 500A Chestnut Street, Tower II Chattanooga, Tennessee 37401

SUBJECT:

MARK I CONTAINMENT LONG TERM PROGRAM Re: Browns Ferry Nuclear Plant, Units I, 2 and 3 We have completed our post-implementation audit review of the Browns Ferry Nuclear Plant Unique Analysis Report (PUAR) for the Mark I containment long term program. Enclosed are the staff's Safety Evaluations for the pool dynamic and structural load aspects of this program. Technical assistance was provided by Brookhaven National Laboratory for the pool dynamic load audit review and by Franklin Research Center for the structural audit review. Copies of their technical evaluations are also enclosed.

The staff has determined that all but a few of the modifications made by Tennessee Valley Authority (TVA) are in accordance with the generic acceptance criteria contained in Appendix A of NUREG-0661, Mark I Containment Long Term Program and its supplement. Where deviations from the acceptance criteria specified in NUREG-0661 have been taken, they have acceptable. Therefore, the staff has concluded that TVA's PUAR been'ound analysis verified that the containment modifications made have restored the original design safety margin to the Mark I containment at the Browns Ferry Nuclear Plant. This action completes our review of this issue.

The vacuum breakers on Mark I containments, which were the subject of Generic Letter 83-02, are not considered within the scope of the Mark I containment long term program. This issue will be reviewed independently at a later date.

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Within 90 days of receipt of this letter it is requested that you submit any Technical Specification changes required as a result of the Mark I containment modifications you have made (i.e. torus temperature monitoring system changes, torus to drywell differential pressure control changes, torus water level changes) which have not previously been submitted as part of the reload amendments.

Sincerely, Original signed by/

Domenic B. Vassallo, Chief Operating Reactors Branch ¹2 Division of Licensing

Enclosures:

1. Safety Evaluation - Pool Dynamics Load

2. Safety Evaluation - Structural Review

3. BNL Technical Evaluation Report

4. FRC Technical Evaluation Report cc w/enclosures:

See next page DISTRIBUTION:

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Mr. Hugh G. Parris Tennessee Valley Authority Browns Ferry Nuclear Plant, Units 1, 2 and 3 CC:

H. S. Sanger, Jr., Esquire James A. Coffey General Counsel Site Director, BFNP Tennessee Valley Authority Tennessee Valley Authority 400 Commerce Avenue Post Office Box 2000 E 11B 330 Decatur, Alabama 35602 Knoxville, Tennessee 37902 Mr. Ron Roaers Resident Inspector Tennessee Valley Authority U. S. Nuclear Regulatory Commission 400 Chestnut Street, Tower II Route 2, Box 311 Chattanooga, Tennessee 37401 Athens, Alabama 35611 Mr. Charles R. Christopher Mr. Donald L. Williams, Jr.

Chairman, Limestone County Commission Tennessee Valley Authority Post Offi'ce Box 188 400 West Summit Hill Drive, WIOB85 Athens, Alabama 35611 Knoxville, Tennessee 37902 Ira L. Meyers, M. D: George Jones, Manager, BFNP State Health Officer Tennessee Valley Authority State Department of Public Health Post Office Box 2000 State Office Building Decatur, Alabama 35602 Montgomery, Alabama 36130 Mr. Oliver Havens Mr. H. N. Culver U. S. Nuclear Reoulatory Commission 249A HBD Reactor Training Center 400 Conmerce Avenue Osborne Office Center, Suite 200 Tennessee Valley Authority Chattanooga, Tennessee 37411 Knoxville, Tennessee 37902 J. Nelson Grace Peoional Administrator Region II Office U. S. Nuclear Regulatory Commission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303