ML17054A162
| ML17054A162 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 10/05/1983 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Rhode G NIAGARA MOHAWK POWER CORP. |
| References | |
| NUDOCS 8310170745 | |
| Download: ML17054A162 (6) | |
Text
i UNITEDSTATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 OCT 5 1983 Docket No. 50-410 Mr. Gerald K. Rhode Senior Vice President Niagara Mohawk Power Corporation 300 Erie Boulevard West
- Syracuse, New York 13202 Dear Mr. Rhode
Subject:
Safety-Related Instrument Tubing and Supports Program for Nine Mile Point Nuclear Station Unit 2 On April 18, 1983, you submitted a proposal to use the Gulf States Utilities Company Safety-Related Instrument Tubing and Supports Program for the River Bend Station at Nine Mile Point Unit 2 with the following differences:
At Nine Mile Point Unit 2 equality Assurance inspection would be performed by the subcontractor performing the installation who is an N Certificate Holder.
With respect to the third-party inspection, the Architect/Engineer (Stone 8 Webster Engineering Corporation), Field equality Control would perform the third-party surveillance.
The staff has completed its review of the Niagara Mohawk Power Corporation (NMPC) request for approval of an instrument tubing and supports progra'm for application in safety-related systems of the Nine Mile Point Nuclear Station Unit 2 (NMP-2) as identified in the NMPC letter dated April 18, 1983 and in FSAR Table 3.9A-15.
Excluded from this program is the instrument line from the root valve to the process line which is three-quarter inch piping.
The instrument tubing and supports program proposed by NMPC is similar to the program approved for the River Bend Station and applies to ASME Section III, Class 2 and Class 3 instrument lines outside the drywell extend-ing from a root valve to the sensing instrumentation.
The tubing used is one-half inch stainless steel.
NMPC will apply ASME Code Case N-127, "Alternate Rules for Examination of Welds in Piping,Section III, Class 1
and 2 Construction",
except for the documentation of activities such as material certification, inspection, and final certification which will be in accordance with the NMPC Category I equality Assurance Program for NMPC which is in compliance with 10 CFR 50, Appendix B.
In this respect, NMPC should verify that the manufacturing of fabricated
- supports, such as Unistrut, has been carried out in accordance with a equality Assurance Program meeting the applicable portions of 10 CFR 50, Appendix B.
83ioi70745 831005 PDR ADOCK 050004i0 A
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Mr. Gerald K. Rhode The instrument tubing and supports program proposed by NMPC differs from the River Bend program as noted above.
The use of the subcontractor who will perform the installation of the instrumentation and support program to also perform the Quality Assurance inspection is acceptable.
- However, we require that third-party inspection be performed by an authorized inspection agency as defined in Article NCA-5000 of Section III of the ASME Boiler and Pressure Vessel Code.
We conclude that the instrument tubing and supports program as described in the NMPC submittal of April 18, 1983 and in FSAR Table 3.9A-15 is acceptable provided that:
(1) the fabricated supports are in accordance with a Quality Assurance Program that is in compliance with 10 CFR 50, Appendix B, and (2) the program is modified to require that third-party inspection is in accordance with Article NCA-5000 of Section III of the ASME Boiler and Pressure Vessel Code.
The FSAR should be revised accord-ingly.
Compliance with these requirements provides a quality level that is commensurate with the importance of the safety functions of the attached fluid systems.
Sincerely, cc:
See next page Drlglnal signed by A. Schwencer, Chief Licensing Branch No.
2 Division of Licensing DISTR I 8 UT-ION:
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Mr: Gerald K. Rhode Senior Vice President Niagara Mohawk Power Corporation 300 Erie Boulevard West
- Syracuse, New York 13202 cc:
Mr. Troy B. Conner, Jr.,
Esq.
Conner 8 Wetterhahn Suite 1050 1747 Pennsylvania
- Avenue, N.W.
Washington, D.
C.
20006 Mr. Richard Goldsmith Syracuse University College of Law E. I. White Hall Campus
- Syracuse, New York 13210 Mr. Jay Dunkleberger, Director Technological Development Programs New York State Energy Office Agency Building 2 Empire State Plaza
- Albany, New York 12223 Ezra I. Bial ik Assistant Attorney General
'nvironmental Protection Bureau New York State Department of Law 2 World Trade Center New York, New York 10047 Resident Inspector Nine Mile Point Nuclear Power Station P. 0.
Box 126
- Lycoming, New York 13093 Mr. John W. Keib, Esq.
Niagara Mohawk Power Corporation 300 Erie Boulevard West
- Syracuse, New York 13202
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