ML20079D964
| ML20079D964 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 09/27/1991 |
| From: | Zeringue O TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9110040259 | |
| Download: ML20079D964 (3) | |
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.U.S.-Nuclear Regulatory Commission ATTN: Document Control Desk-WashinP, ton, D.C.
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Gentlemen:-
In the natter of
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Docket Nos. 50-259 Tennessee Valley Authority
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50-260 50-296 BROWNS FERRY: NUCLEAR PLANT (BFN) - 10 CFR 50.55 PROPOSED RULES FOR UNITS 1,-2 AND 3: REACTOR PRESSURE VESSEL (RPV) EXAMINATIONS
Reference:
% e proposed rule change to 10 CFR 50.55a~ dated Thursday, January-31, 1991
_The purpose of,this letter is to inform NRC of TVA's intention to perform the RPV shell welds. examination as stated in the! reference.
Unfts 1 and-3 are-in-an extended outage. TVA will take advantage of the
- downtime to perform.the examinations from the inner diameter (1.D.)
utilizing automated ultrasonic' testing techniques on BFN Units 1 and 3 ptior.to starttip of the respective units..BFN Unit 2 examinations will
. be performed prior to th.s end-.of.the. cycle six refueling outage.
-The automated examinations for Units 1 and 3 vill be used in lieu of the
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outer diameter (0.D.) examinations' scheduled for thic outage to satisfy the ASME Section XI code requirements'as modiffwt by request'for relief-
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ISI-2. :In the event ASME Appendix d become: a requirement for operating units, TVA v:'.11 use and take credit for these examinations as satisfying the Appendi 8 requirements for EFN Units 1, 2, and 3.
TVA's' initial assessment indicates that approximately 90 percent of the
- reactor shell welds are accessible from the I.D. or 0.D.
-A summary list of commitments contained in this letter is provided.in the
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er. closure.
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2 U.S. Nucleer Regulatory Commission SEP 271991 If you have any questions, please get in touch with Patrick P. Carter, Manager of Site Licencing at (205) 729-7556.
Sincerely, f/llN_
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t O. J.'Zeringue Enclosure cc (Enclosure):
s NRC Realdent Inspector lirowns Ferry Nuclear Plant Route 12, Box G37 Athens, Alabama 35609-2000 Mr. Thierry M. Rosa, Project Manager U.S. Nuclear Regulatory Commission s
One White F1h t, North 11555 Rockv114e Pike Rockville, Maryland 20852 Mr. B. A. Wilson, Project Chief U.S. Nuclear Regulatory Commisalon Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 A
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ENCLOSURE Commitment Summary
-1.
BFN will perform automated ultrasonic examinations on Unita 1 and 3, Reactor Pressure Vessel shell welds (ASME Section XI, 1989 Edition, Examination Category B-A, Item No. Bl.10) prior to startup.
2.
BFN will perform automated ultrasonic examinations on Unit 2 prior to the completion of the cycle 6 refueling outase.
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