ML17059B447
| ML17059B447 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 03/03/1997 |
| From: | Hood D NRC (Affiliation Not Assigned) |
| To: | Sylvia B NIAGARA MOHAWK POWER CORP. |
| Shared Package | |
| ML17059B448 | List: |
| References | |
| TAC-M97917, NUDOCS 9703060312 | |
| Download: ML17059B447 (8) | |
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t UNITED STATES t NUCLEAR REGULATORY COMMISSION WASHINGTON> D.C. 205554001 March 3, 1997 gj5 ~O Hr. B. Ralph Sylvia Executive Vice President Gener ation Business Group and Chief Nuclear Officer Niagara Mohawk Power Corporation Nuclear Learning Center 450 Lake Road
- Oswego, NY 13126
SUBJECT:
CORE SHROUD REINSPECTION PLANS FOR, REFUELING OUTAGE 14 (RF0-14),
NINE NILE POINT NUCLEAR STATION, UNIT'O. 1, (TAC NO. H97917)
Dear Hr. Sylvia:
The NRC staff has reviewed the reinspection plans submitted by the Niagara Mohawk Power Corporation (NHPC) for the repaired core shroud at the Nine Mile Point Nuclear Station, Unit No.
1 (NHP-1).
The plans are presented in your letter dated February 7,
- 1997, as supplemented February 28, 1997.
By letter dated March 31, 1995, the NRC staff issued a safety evaluation (SE) regarding the NHP-1 core shroud stabilizer design.
The SE acknowledged that NHPC would address certain issues by the spring 1997 inspection during RF0-14, and that NHPC had committed to submit its plan for reinspection of the core shroud and core shroud repair assemblies following RFO-13.
The NRC staff recommended that NHPC perform certain actions to qualify the ultrasonic testing (UT) techniques used to inspect weld H8 and to develop an effective method to locate the segment welds of the top guide support ring.
The safety evaluation further noted that NHPC would reinspect all the reported indications on the top side of the H8 weld during the spring 1997 outage.
As stated in the enclosed SE, the NRC staff finds NHPC has adequately addressed these issues by the February 7 letter as supplemented February 28, 1997.
However, after completing the inspections for RF0-14, NMPC should evaluate the results of its reinspection of the H8 weld, develop a plan for the next reinspection of this weld, and submit the results and the plan to the NRC staff before the next scheduled refueling outage.
You state that NHPC will conduct shroud inspections in accordance with BWRVIP-07, "Guidelines for Reinspection of BWR Core Shrouds,"
(EPRI Report TR-105747),
dated February
- 1996, except for the vertical weld inspections to be conducted during the spring 1997 refueling outage.
Specifically, you propose to change the BWRVIP criteria for sample expansion because the NHP-1 core shroud has less total length of vertical welds than other typical boiling water reactor plants.
As noted in the enclosed SE, the NRC staff has reviewed your proposed change to the BWRVIP's recommendation for conducting reinspection of the vertical welds and finds it to be unacceptable at this eIIe~tl:~
9703060312 970303 PDR ADOCK 05000220 8
1
March 3, 1997 B. Ralph Sylvia time.
It is our position that NMPC should conduct its inspections in accordance with the BWRVIP-07 criteria during RFO-14.
Although the NRC staff's review of these guidelines has not been completed, our review to date indicates their use is acceptable for the near term while we complete our generic review.
This completes our efforts under TAC No. M97917. If you have questions regarding this letter, contact me by phone at (301) 415-3049, or by electronic mail at dsh8nrc.gov.
Sincerely, ORIGINAL SIGNEO BY:
Enclosure:
SE Docket No. 50-220 cc w/encl:
See next page DISTRIBUTION:
Darl Hood, Senior Project Manager Project Directorate I-l Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket File PUBLIC PDI-1 Reading DTerao SVarga JZwolinski SBajwa KWickman DHood OGC ACRS CCowgill, RI SLittle MBanic THarris (e-mail TLH3)
DOCUMENT NAME:
G: iNMPIiNM197917. LTR To receive a copy of this document, indicate in the box:
"C" = Copy without attachment enclosure "E" = Co y with attachment enclosure "N" = No co y OFFICE PH:PDI-1 NAME DHood/rsI DATE D3/
/97 E
LA:PDI-1 SLittle 03/
'/97 D:PDI-1 SBajwa D3/.
/97 0
.icosa Recor Copy
'4 I'I p
B.
Ral ph Syl vi a time.
It is our position that NNPC should conduct its inspections in accordance with the BWRVIP-07 criteria during RFO-14.
Although the NRC staff's review of these guidelines has not been completed, our review to date indicates their use is acceptable for the near term while we complete our generic review.
This completes our efforts under TAC No. H97917.
If you have questions regarding this letter, contact me by phone at (301) 415-3049, or by electronic mail at dsh8nrc.gov.
Sincerely,
Enclosure:
SE Docket No. 50-220 cc w/encl:
See next page Darl Hood, Senior Project Manager Project Directorate I-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
~
B. 'Ralph Sylvia Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Unit No.
1 CC:
Hr. Richard B. Abbott Vice President and General Hanager-Nuclear Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093 Hr. Hartin J.
McCormick, Jr.
Vice President Nuclear Safety Assessment and Support Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093 Hs. Denise J. Wolniak Manager Licensing Niagara Mohawk Power Corporation Nine Mile Point Nuclear, Station P.O.
Box 63
- Lycoming, NY 13093 Hr. Kim A. Dahlberg General Manager - Projects Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093 Mr. Norman L. Rademacher Plant Manager, Unit 1
Nine Nile Point Nuclear Station P.O.
Box 63
- Lycoming, NY 13093 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Resident Inspector U.S. Nuclear Regulatory Commission P.O.
Box 126 Lycoming,-NY 13093 Charles Donaldson, Esquire Assistant Attorney General New York Department of Law 120 Broadway New York, NY 10271 Hr. Paul D. Eddy State of New York Department of Public Service Power Division, System Operations 3 Empire State Plaza
- Albany, NY 12223 Mr. F. William Valentino, President New York State
- Energy, Research, and Development Authority Corporate Plaza West 286 Washington Avenue Extension
- Albany, NY 12203-6399 Hark J. Wetterhahn, Esquire Winston 5 Strawn 1400 L Street, NW Washington, DC 20005-3502 Gary D. Wilson, Esquire Niagara Mohawk Power Corporation 300 Erie Boulevard West
- Syracuse, NY 13202 Supervisor Town of Scriba Route 8, Box 382
- Oswego, NY 13126 Warren Bilanin, EPRI Task Manager 3412 Hillview Ave.
Palo Alto, CA 94303 Robin Dyle, Technical Chairman BWRVIP Assessment Task Southern Nuclear Operating Company Post Office Box 236 40 Inverness Center Parkway Birmingham, AL 35201