ML18038A594

Requests Approval of Alternative Method of Meeting Reg Guide 1.63 Guidelines Re Installation of Containment Electrical Penetrations.Electrical Penetration Assemblies Bolted to Liner Nozzles as Shown on Encl Figures

ML18038A594
Person / Time
Site:	Nine Mile Point
Issue date:	08/22/1983
From:	Rhode G NIAGARA MOHAWK POWER CORP.
To:	Schwencer A Office of Nuclear Reactor Regulation
References
7229, NUDOCS 8308290378
Download: ML18038A594 (10)

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REGULATORY ORMATION DISTRIBUTION SY;M (RIDS)

SEDATE:

ACCESSION NBR:6308290376 ., DOC 83/08/22 NOTARIZED: NO DOCKET FAGIL:50-410 Nine Mile Point Nuclear Stationi Unit ?i Niagara Moha 05000410 AUTH'AME AUTHOR AFFILIATION RHODEiG,K ~ Niagara Mohawk Power NAME RECIPIENT AFFILIATION Corp'ECIP.

SCHNENCERgA Licensing Branch 2

SUBJECT:

Requests approval of alternative method of meeting Reg Guide 1.63 guidelines re installation of containment electrical penetrations,Electrical penetr'ation assemblies bolted to liner nozzles as shown on encl, figures, DISTRIBUTION CODE: BOOIS COPIES RECEIVED:LTR TITLE: Licensing Submi t tal: PSAR/FSAR Amdts L j ENCL Related Cor r SIZE:

espondence NOTES:PNL icy FSAR'S 8 AMDTS ONL'Y ~ 05000410 RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL NRR/DL/ADL 1 0 NRR LB2 BC 1 0 NRR LB2 LA 1 0 HAUGHEYiM 01 1 1 INTERNAL: ELD/HDS3 1 0 IE FILE 1 1 IE/DEPER/EPB 36 3 3 IE/DEPER/IRB 35 1 IE/DEQA/QAB 21 1 1 NRR/DE/AEAB 1 0 NRR/DE/CEB 11 1 1 NRR/DE/EHEB 1 1 NRR/DE/EQB 13  ? 2 NRR/DE/GB 28 2 2 NRR/DE/MEB 16 1 1 NRR/DE/MTEB 17 1 1 NRR/DE/SAB 24 1 1 NRR/DE/SGEB 25 1 1 NRR/DHFS/HFEB40 1 1 NRR/DHFS/LQB 32 1 1 NRR/DHFS/PSRB 1 NRR/DL/SSPB 1 0 NRR/DS I/AEB 26 1 1 NRR/DSI/ASB 1 1 NRR/DSI/CPB 10 1 1 NRR/DSI/CSB 09 =1 1 NRfk/DSI/ICSB 16 1 1 NRR/DSI/METB 12 1 1 NRR/DS I/PSB 19 1 1 NR AB 22 1 1 ~

NRR/DS I/RS8 23 1 1 G Fl 04 1 .1 RGN1 3 AMI/MIB 1 0 EXTERNAL! ACRS 41 6 BNL(AMDTS ONLY) 1 1 DMB/DSS (AflDTS) 1 1 FEMA REP DIY 39 1 1 LPDR 03 1 1 NRC PDR 02 1 1 NSIC 05 1 NTIS 1 1 NOTES: 1 1

'TOTAL NUfIBER OF COPIES REQUIRED: LTTR 54 ENCL 47

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4 NIAGARA MOHAWK POWER CORPORATION NIAGARA <<~ MOHAWK 300 ERIE BOULEVARD WEST SYRACUSE, N, Y I 3202 GERALD K. RHODE SENIOR VICE PRESIDENT August 22, 1983 (7229)

Mr. A. Schwencer, Chief Licensing Branch No. 2 Division of Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555

Dear Mr. Schwencer:

This letter requests Nuclear Regulatory Commission approval of an alternative method of meeting the guidance provided in Regulatory Guide 1.63 regarding installation of, the containment electrical penetr ations for Nine Mile Point Nuclear Station-Unit 2.

Final Safety Analysis Report Section 1.8 currently states that Nine Mile Point-Unit 2 complies with Regulatory Guide 1.63. This regulatory guide endorses IEEE-317 with certain clarifications. IEEE-317 states that electrical penetration assemblies shall be installed, inspected and tested in accordance with ASME Boiler and Pr essure Vessel Code,Section III, Subsection NE, for Class MC components. The ASME requirements include a "N" stamp for welded and mechanically attached components.

For Nine Mile Point-Unit 2, the installation of electrical penetrations would be performed under the Stone & Webster Engineering Corporation guality Assurance Program for Category I components. The electrical penetration assemblies are bolted to the liner nozzles as shown on the attached figure.

Due to the dates of order and fabrication, the liner nozzles were not required to be "N" stamped. Therefore, an ASME III program for installing these electrical penetrations is not warranted since the containment to which the penetrations will be bolted is not an N-stamped component. Installation based on the manufacturer's recommendations, in process surveillance, final visual inspection and leak rate testing performed in conformance to the Stone &

Webster Engineering Corporation guality Assurance Program will provide a high degree of assur ance appropriate for the penetrations.

PyII 8308290378 830822 PDR ADOCK 050004l0 IEI PDR

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l Mr. A. Schwencer, Chief Page 2 The installation program will ensure that the containment electrical penetrations are properly installed and fully capable of performing their intended function. The alternative method will be included in an amendment to the Final Safety Analysis Report following approval of this proposed change by

, the Nuclear Regulatory Commission.

Yery tru urs,

. K. R ode Senior Yice President GKR/MS:ja

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