ML18033A464
| ML18033A464 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 12/08/1988 |
| From: | Black S NRC/OSP |
| To: | Kingsley O Tennessee Valley Authority |
| Shared Package | |
| ML18033A465 | List: |
| References | |
| GL-84-011, GL-88-001, TAC-61049 NUDOCS 8812140042 | |
| Download: ML18033A464 (5) | |
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UNITED STATES'UTBAR REGULATORY COMMISSION WASMINGTON, O. C.
20555'ecember 8,
1988 Docket No. 50-260 Mr. Oliver D. Kingsley, Jr.
Senior Vice President, Nuclear Power Tennessee Valley Authority 6N 38A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801
Dear Mr.,
Kingsley:
SUBJECT:
GENERIC LETTERS (GL) 84-11 (INSPECTION OF BWR STAINLESS STEEL PIPING)
AND GL 88-01 (NRC POSITION ON IGSCC IN BWR AUSTENITIC STAINLESS STEEL PIPING) - EVALUATION OF BROWNS FERRY, UNIT 2 RESPONSES (TAC 61049)
The staff's enclosed Safety Evaluation (SE) addresses your responses to GL 84-11, "Inspections of BWR Stainless-Steel Piping," which was superseded by GL 88-01, "NRC Position on IGSCC in BWR Austenitic, Stainless Steel Piping."
Because of the prolonged outage at Browns Ferry, the work performed under GL 84-11 continued under GL 88-01.
We have reviewed your responses regarding the required inspections,
- analyses, and correctiVe actions undertaken during the Browns Ferry Nuclear (BFN), Unit 2, Cycle 5 outage.
These inspections were discussei in your submittals dated June 7,
- 1984, March 11, November 10, and December i5, 1986, December 31,
- 1987, and August 1, 1988.
We conclude that the BFN intergrannular stress corrosion cracking
( IGSCC) analyses and corrective/mitigation. actions for Unit 2 were performed in accordance with GL 84-11 and 88-01.
However, contrary to GL 84-11 and GL 88-01, adequate sample expansion inspections were not performed when IGSCC indications were found in induction heating stress improvement
The need to expand the sample inspections when crack indications were found had been previously discussed in our March 26, 1986 letter to you.
'Because complete sample expansion inspections were not performed after IGSCI indications were found in post-IHSI inspection and leak tests, we are unable to conclude that all welds in the austenitic piping systems in BFN 2 are satisfactory.
In general, we conclude that your responses to the subject generic letter are acceptable.
However, Section 3.0 of the SE identifies certain areas of concern that need to be resolved prior to restart.
Specifically, the staff requests a
submittal within 30 days:
( 1) addressing commitments concerning sample expansion inspections in accordance with GL 88-01; and (2) addressing a restart inspection schedule for the 71 welds which have not been post-IHSI inspected.
In addition, the staff requests proposed technical specification changes
. reflecting leak detection requirements specified in GL 88-01 within 90 days nf Unit 2 restart.
SS12140042 SS120S PDR ADOCK 05000260 P
December 8, 1988 The reporting and/or recordkeeping requirements in this letter affect fewer than ten respondents; therefore, OMB clearance is rot required under P.L.96-511.
If you have any questions, please contact your Project Manager, Gerald Gears, at 301-492-0767.
Sincerely,,...
Original Signed by
Enclosure:
Safety Evaluation cc w/enclosure:
See next page DISTRIBUTION
~F NRC PDR Local PDR Projects Reading OSP.(eading J. r'artlow S.
Richardson S. Black B. 0. Liaw F.
McCoy ll. S. Little M. Simms G.
Gears D. Moran J.
Rutberg D. Crutchfield B. Grimes E. Jordan ACRS (10)
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December 8, 1988 The reporting and/or recordkeeping requirements in this letter affect fewer than ten respondents; therefore, ONB clearance is not required under P.L.96-511.
If you have any questions, please contact your Project Manager, Gerald Gears, at 301-492-0767.
Sincerely, Original Signed by
Enclosure:
Safety Evaluation cc w/enclosure:
See next page DISTRIBUTION NRC PDR Local PDR Projects Reading OSP Reading J. Partlow S.
Richardson S. Black B.
D. Liaw F.
McCoy M. S. Little N.
Simms G.
Gears D. Moran J.
Rutberg D. Crutchfield B. Grimes E. Jordan ACRS (10)
GPA/CA GPA/PA BFN Rdg. File Suzanne C. Black, Assistant Director for Projects TVA Projects Division Office of Special Projects
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Mr. Oliver D. Kingsley, Jr. Browns Ferry Nuclear Plant CC:
General Counsel Tennessee Valley Authority 400 West Summit Hill Drive Ell B33 Knoxville, Tennessee 37902 Mr. R. L. Gridley Tennessee, Valley Authority 5N 157B Lookout Place Chattanooga, Tennessee 37402-2801 Mr. C.
Mason Tennessee Valley Authority Browns Ferry Nuclear Plant P.O.
Box 2000
Box 2000
- Decatur, Alabama 35602 Mr. D. L. Williams Tennessee Valley Authority 400 West Summit Hill Drive W10 B85 Knoxville, Tennessee 37902
- Chairman, Limestone County Commission P.O.
Box 188
- Athens, Alabama 35611 Claude Earl Fox, M.D.
State Health Officer State Department of Public Health State Office Building Montgomery, Alabama 36130 Pegional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W.
Atlanta, Georgia 30323 Resident Inspector/Browns Ferry NP U.S. Nuclear Regulatory Commission Route 12, Box 637,
- Athens, Alabama 35611 Dr. Henry Myers, Science Advisor Committee on Interior and Insular Affairs U. S.
House of Representatives Washington, D.C.
20515 Tennessee Valley Authority Rockville Office 11921 Rockville Pike Suite 402 Rockville, Maryland 20852