ML20203G329

Forwards Request for Addl Info Relating to Summary Rept on Verification of Seismic Adequacy of Mechanical & Electrical Equipment,Millstone Nuclear Power Station,Unit 2

ML20203G329
Person / Time
Site:	Millstone
Issue date:	02/24/1998
From:	Mcdonald D NRC (Affiliation Not Assigned)
To:	Bowling M NORTHEAST NUCLEAR ENERGY CO.
References
TAC-M69459, NUDOCS 9803020278
Download: ML20203G329 (5)

Text

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. Mr, M:rtin L. Bowling, Jr. February 24, 1998 Recov;ry Officer- Millatone Unit No. 2 Northeast Nuclear Energy Company clo Ms. Patricia A. Loftus Director - Regulatory Affairs P. O. Box 128 Waterford, CT 06385

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION RELATING TO THE

SUMMARY

REPORT ON THE VERIFICATION OF THE SEISMIC ADEQUACY OF MECHANICAL AND ELECTR; CAL EQUIPMENT- MILLSTONE NUCLEAR POVER STATION, UNIT NO. 2 (TAC NO. M69459)

Dear Mr. Bowling:

By letter dated January 22,1996, Northeast Nuclear Energy Company (NNECO) provided the subject repod. The NRC staff is currently reviewing NNECO's Sunimary Report, and has determined that addit!onal information is needed regarding operator actions to complete its review in this area. The information needed is identified in the enclosure to this letter, if you have any questions relating to this request, please contact me at (301) 415-1408.

Sincerely, Original signed by:

Daniel G. Mcdonald Jr., Senior Project Manager

Special Projects Office - Licensing i Office of Nuclear Reactor Regulation Docket No. 50-336

Enclosure:

Request for Additional Information cc w/ encl: See next page /

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'a UNITED STATES g }R NUCLEAR REGULATORY COMMISSION o WASHINGTON, D.C. 30666-0001 g...../ February 24, 1998 Mr. Martin L. Bowling, Jr, Recovery Officer- Millstone Unit No. 2 Northeast Nuclear Energy Company clo Ms. Patricia A. Loftus Director- Regula*ory Affairs P. O. Box 128 Waterford, CT 06385

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION RELATING TO THE

SUMMARY

REPORT ON THE VERIFICATION OF THE SEISMIC ADEQUACY OF MECHANICAL. AND ELECTRICAL EQUIPMENT- MILLSTONE NUCLEAR POWER STATION, UNIT NO. 2 (TAC NO. M69459)

ar Mr. Bowling:

By letter dated January 22,1996, Northeast Nuclear Energy Corpseny (NNECO) provided the subject report. The NRC staff is currently reviewing NNECO's Suw mary Report, and has determined that additional information is needed regarding operator actions to complete its review in this area. The information needed is identified in the enclosure to this letter, if you have any questions relating to this request, please contact me at (301) 415-1408.

Sincerely, Daniel G. McDona!d Jr., Senior Project Manad er Special Projects Office - Licensing Office of Nuciaar Reactor Regulation Docket No. 50-336

Enclosure:

Request for Additional Information cc w/ encl: See next page 1

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R_EQUEST FOR ADDITIONAL INFORMATION

SUMMARY

REPORT ON THE VEPlFICATION OF_ SEISMIC ADEQUACY CF MECHANICAL AND ELECTRICAL EQUIPMENT IN OPERATING REACTORS MILLSTONE NUCLEAR POWER STATION. UNIT NCL2 The NRC staf' mds the fel:owing additionalinformation regarding opert. tor actions specified in the subject repre

a. Describe what reviews were performed to determine if any local operator actions required to safely shut down the reactor, such as implementing the Safe Shutdown Equipment List (SSEQ, could be affected by potentially adverse environmental condhions (such as loss of lighting, excessivo heat or humidity, or in-plant barriers) resulting frcm the seismic event. Descnoe how staffing was evaluated and describe the reviews that were conducted to ensure operators had adequate time and resources to respond to such events.

b. As part of the review, were any control room structures, which could impact the operator's ability to respond to the seismic event, identified? Such items might include but are not limited to ceiling tiles, nonbolted cabinets, and nonrestrained piecca of equipment (i.e., computer keyboards, monitors, stands, printers, etc.). Describe how each of these potential sources of interactions has been evaluated and desenbe the schedule for implementation of the final resolutions.

c. Describe what reviews were performed to determine if any local operator actions were required to reposition " bad actor relays." For any such activ: ties describe how adverse environmental conditions (such as loss of lighting, excessive heat or humidity, or in-plant barriers) resulting from the seismic event were analyzed and dispositioned. C,3 scribe how staffing was evaluated and describe the reviews which were conducted to ensure operators had adequate time and resources to respond to such events.

d. Describe which of the operator actions associated with rosetting SSEL equi.nmeat affected by postulated relay chatter are considered to be routine and coasisteat with the skill of the craft. If not considered skill of the craft, what training and o- ational aids were developed to ensure the operators will perform the actions reo'd.ed to reset rdfected equipment?

e. Assume the alarms rAssociated With

• bad actor relayf Dre expected to annunciate during the seismic event. Do the operators have to respond to those annunciators and review the annunciator response procedures associatea with them for potential action?

How would those additional actions impact the operators ability to implement the Normal, Abnormal, and Emergency Operating Procedures required to p! ace the resctor in a safe shutdown condition?

f. To the extent that Normal, Abnormal, and Emergency OperaHng Procedures were modified to provide plant staff with additional guidance on mitigating the UnrecoNed Safety issue A-46 seismic event, describe what training was requirad and provided to the . licensed operators, nonlicensed operators, and other plant staff required to respond to such events.

Enclosure 1

)

T Northeast Nuclear Energy Company' Mine. tone Nuc. lear Power Station U,2 2; cc:

Lillian M Cuoco, Esquire- Mr. F. C. Rothen

- Senior Nued. ear Counsa _ Vice President -Work Services Nortnessl utilities Service Company- Northeast Utilities Servics Company P. O. Box 270 P. O. Box 128 Hartfud, CT 06141-0270 Wate: ford. CT 06385 l Mr. John Buckingham Errest C. Hadley, Esquire

! Department of Public Utility Control 1040 B Main Street

- Electric Unit - P.O. Box 549

. 10 Liberty Square West Wareham, MA 02576 New Britain, CT 06051

. Mr. D. M. G'>ebel

Mr. Ko nn T. A. McCarthy, Dirsetor Vice President - Nuclear Oversight

. . MonNoting and Radishon Division Northeast Utilities Service Company

Department of Environmental Protection P. O Box 128 -

79 Elm Street Waterford, CT 06385 Hartford, C r 06100 5127 <

Mr. Da'.id Amerine Regicnal Administrator, Region i Vice President - Nuclear Engineering U.S. Nuclear Regulatory Commission and Support j 475 AItendale Road NortSeast Utilities SeMee Company Xing of Pruct.a, PA 19406 P O. Box 128 z

Waterford, CT 06385 0 First Selectmen-Mr. Alten Johanson, Assistant Director TowJ of Waterford L Hall of Records Office of Po! icy ar.d Management 200 Bocton Post Road Poli y Development and Planning Waterford, CT 06385 Division

450 Capitol Avenue - MS# 52ERN

,- Mr. Wayne D. Lanning P. O. Box 341441 f Deputy Director of Inspections Hartford, CT 06134-1441 t Special Projects Office 475 Al!endale Rcad Mr. M. H. Brothers ,

. King of Prussia, PA 194061415 Vice President- Operations-Northeast Nuclear Energy Company Charles Brinkman, Manager P.O. Box 128 Washington Nuclear Operations  : Waterford, CT 06385

-' ABB Combustion Engineering

.12300 Twinbrook Pkwy, Luite 330 - Mr. J. A. Price Rockville, MD 20852 Unit Director- Millstone Unit 2 ~

Northeast Nuclear Energy Company Senior Resident inspector- P.G. Box 128 Millstone Nuclear Power Station Waterford, r.,T 06385

( clo U.S. Ne., lear Regulatory Commission

' P.0, Box 513 -

Niantic, CT 06357 E 1_ _ _ ' -- U___ _ . . _; -- .-.-..-,..,,,,,s

( Northeast Nuclear Energy Company Millstone Nuclear Power Station Unit 2 c.c:

Mr. B. D. Kenyon g Chiet Nucler Officer dailtstone

. Northeast Nucleat Energy Company 1_ P.O. Bax 128 Waterford, CT 06385 1; ; C&snr, Regulatory Commissloa S ATTN: Ma Susan Perry Luxton 180 Great Neck Road Waterford, CT 06385 Deborah Katz, President 1( Citizens Awareness Network P. O. Box 83 9 Shcibume Falls, MA 03170 j The Honorable Terry Concannon

) Co-Chair

'l Nuclear Enstgy Advisory Council J4 Room 4035 Legislative Office Building Caphol Avenue Hertford,CT 00106

. Mr. Evan W. Woollacott

- Co-Chair j- Nuclear Fnergy Advisory Council E 128 Terry's Plc.n Road '

Simsbury,CT 06070 E Uttle Harbor Consultants, Inc.

Millstone -ITPOP Project Office

^

P. O. Box 0630 f_ Niantic, CT 063f'-0630 Mr. Daniel L. Curry Project Director

Parsons Power Group Inc.

2675 Morgantown Road

. Reading, PA 19607 t

Mr. Don Schopfer Verification Team Manager Sargent & Lundy 55 E. Monroe Street Chicago,IL 60603

_ _ - - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _- .