ML20127N261

Forwards Request for Addl Info on Generic Ltr 83-28,Items 2.1,3.2.3,4.2.1,4.2.2,4.5.2 & 4.5.3 Per Preliminary Staff Review of Util Response.Generic Responses Prepared by Owners Groups,Inpo & NSSS Vendors May Be Useful in Response

ML20127N261
Person / Time
Site:	Seabrook
Issue date:	06/18/1985
From:	Knighton G Office of Nuclear Reactor Regulation
To:	Harrison R PUBLIC SERVICE CO. OF NEW HAMPSHIRE
References
GL-83-28, NUDOCS 8507010487
Download: ML20127N261 (9)

Text

f. a

. JtlN 1 8 N 3 Docket Nos.: 50-443 and 50-444 e

Mr. Robert J. Harrison President & Chief Executive Officer Public Service Company of New Hampshire Post Office Box 330 Manchester, New Hampshire 03105

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOLLOWING PRELIMINARY STAFF REVIEW 0F PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE'S RESPONSE TO GENERIC LETTER 83-28 The staff has completed a preliminary review to assess the completeness and adequacy of your responses to Generic Letter 83-28 Items 2.1, 2.2, 3.1.3, 3.2.3, 4.1, 4.2.1, 4.2.2, 4.5.2 and 4.5.3. For Seabrook Units 1 and 2, your responses were found to be incomplete for Items 2.1, 3.2.3, 4.2.1, 4.2.2, 4.5.2 and 4.5.3. Brief descriptions of the deficiencies are given as guide-lines for corrective action in the enclosed request for additional information.

Efforts by Owners Groups, INP0 and NSSS Vendors have been or are being made to produce generic responses that may be useful in meeting the requirements of Generic Letter 83-28 Items 2.1, 4.5.2 and 4.5.3. You may wish to contact your Owner's Group or INP0 regarding the applicability of such generic responses to Seabrook, Units 1 and 2.

In order to preserve our present review schedule, the staff needs to have the supplementary information within 45 days for Item 4.2.1 and 4.2.2, within 60 days for items 2.1, and 3.2.3 and within 90 days for Items 4.5.2 and 4.5.3.

We request your cooperation in meeting this schedule.

Questions or additional information regarding this matter should be directed to the Seabrook Project Manager, Mr. V. Nerses (301-492-7238).

i S

George W. Knighton, Chief Licensing Branch No. 3 Division of Licensing DISTRIBUTION

Enclosure:

Docket File NRC PDR Local PDR PRC System As stated NSIC LB#3 Reading JLee VNerses JPartlow BGrimes EJordan OELD, Attorney cc: See next page ACRS (16) DLasher FRosa GBagchi dB hD,L LjB, M d sYs:dh GM ton 06/(V/85 06/) /85 8507010487 DR 850618 ADOCK 05000443 PDR

, e ,

y ,

'o,, UNITED STATES g

g NUCLEAR REGULATORY COMMISSION g j WASHINGTON. D. C. 20555 JUN 18 E

' Docket Nos.: 50-443 and 50-444 Mr. Robert J. Harrison President & Chief Executive Officer Public Service Company of New Hampshire Post Office Box 330 Manchester, New Hampshire 03105

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOLLOWING PRELIMINARY STA REVIEW 0F PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE'S RESPONSE TO GENERIC LETTER 83-28 The staff has completed a preliminary review to assess the completeness and adequacy of your responses to Generic Letter For83-28 Items Units Seabrook 2.1, 2.2, 3.1.3, 1 and 2, your 3.2.3, 4.1, 4.2.1, 4.2.2, 4.5.2 and 4.5.3.

responses were found to be incomplete for Items 2.1, 3.2.3, 4.2.1, 4.2.2, 4.5.2 and 4.5.3. Brief descriptions of the deficiencies are given as guide-lines-for corrective action in the enclosed request for additional information.

Efforts by Owners Groups, INP0 and NSSS Vendors have been or are being made to produce generic responses that may be useful in meeting the requirements of Generic Letter 83-28 Items 2.1, 4.5.2 and 4.5.3. You ma.y wish to contact your Owner's Group or INP0 regarding the applicability of such generic responses to Seabrook, Units 1 and 2.

In order to preserve our present review schedule, the staff needs to have the supplementary information within 45 days for Item 4.2.1 and 4.2.2, within 60 days for items 2.1, and 3.2.3 and within 90 days for Items 4.5.2 and 4.5.3.

We request your cooperation in meeting this schedule.

Questions or additional information regarding this matter should be directed to the Seabrook Project Manager, Mr. V. Nerses (301-492-7238).

W -

eorge . Knig ton, Licensing Branch 3No. pef Division of Licensing

Enclosure:

As stated cc: See next page

6 A .

Seabrook Mr. Robert J. Harrison President and Chief Executive Officer Public Service Company of New Hampshire Post Office Box 330 Manchester, New Hampshire 03105

. Thomas Dignan, Esq. E. Tupper Kinder, Esq.

John A. Ritscher, Esq. G. Dana Bisbee, Esq.

Ropes and Gray Assistant Attorney General 225 Franklin Street Office of Attorney General Boston, Massachusetts 02110 208 State Hosue Annex Concord, New Hampshire 03301 Mr. Bruce B. Beckley, Project Manager Public Service Company of New Hampshire Resident Inspector Post Office Box 330 Seabrook Nuclear Power Station Manchester, New Hampshire 03105 c/o US Nuclear Regulatory Commission Post Office Box 700 Dr. Mauray Tye, President Seabrook, New Hampshire 03874 Sun Valley Association 209 Summer Street Mr. John DeVincentis, Director Haverhill, Massachusetts 01839 Engineering and Licensing Yankee Atomic Electric Company Robert A. Backus, Esq. 1671 Worchester Road O'Neil, Backus and Spielman Framingham, Massachusetts 01701 116 Lowell Street Manchester, New Hampshire 03105 Mr. A. M. Ebner, Project Manager United Engineers A Constructors Ms. Beverly A. Hollingworth 30 South 17th Street 7 A Street Post Office Box 8223 Hampton Beach, New Hampshire 03842 Philadelphia, Pennsylvania 19101 William S. Jordan, III Mr. Philip Ahrens, Esq.

Diane Curran Assistant Attorney General Harmon, Weiss & Jordan State House, Station #6 20001 S Street, NW Augusta, Maine 04333 Suite 430 Washington, DC 20009 Mr. Warren Hall Jo Ann Shotwell, Esq. Public Service Company of Office of the Assistant Attorney General New Hampshire Environmental Protection Division Post Office Box 330 One Ashburton Place Manchester, New Hampshire 03105 Boston, Massachusetts 02108 Seacoast Anti-Pollution League D. Pierre G. Cameron, Jr., Esq. Ms. Jane Douahty General Counsel 5 Market Street Public Service Company of New Hampshire Portsmouth, New Hampshire 03801 Post Office Box 330 Manchester, New Hampshire 03105 Mr. Diana P. Randall 70 Collins Street Regional Administrator - Region I Seabrook, New Hampshire 03874 U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 i

O I .

Mr. Calvin A. Canney, City Manager Mr. Alfred V. Sargent, City Hall Chairman 126 Daniel Street Board of Selectmen Portsmouth, New Hampshire 03801 Town of Salisbury, MA 01950 Ms. Letty Hett Senator Gordon J. Humphrey Town of Brentwood U. S. Senate RFD Dalton Road Washington, DC 20510 Brentwood, New Hampshire 03833 (Attn: Tom Rurack)

Ms. Roberta C. Pevear Senator Gordan J. Humphrey Town of Hampton Falls, New Hampshire 1 Pillsbury Street Drinkwater Road Concord, New Hampshire 03301 Hampton Falls, New Hampshire 03844 (Attn: Herb Roynton)

Ms. Sandra Gavutis Mr. Owen B. Durgin, Chairman Town of Kensington, New Hampshire Durham Board of Selectnen RDF 1 Town of Durham East Kingston, New Hampshire 03827 Durham, New Hampshire 03824 Charles Cross, Esq.

Chairman, Board of Selectmen Shaines, Mardrigan and Town Hall McEaschern South Hampton, New Hampshire 03827 25 Maplewood Avenue Post Office Box 366 Mr. Angie Machiros, Chairman Portsmouth, NH 03801 Board of Selectmen for the Town of Newbury Newbury, Massachusetts 01950 Mr. Guy Chichester, Chaiman Rye Nuclear Intervention Ms. Rosemary Cashman, Chairman Committee Board of Selectmen c/o Rye Town Hall Town of Amesbury 10 Central Road Town Hall Rye, New Hampshire 03870 Amesbury, Massachusetts 01913 Jane Spector Honorable Richard E. Sullivan Federal Energy Regulatory Mayor, City of Newburyport Connission Office of the Mayor 825 North Capital Street, NE City Hall Room 8105 Newburyport, Massachusetts 01950 Washington, D. C. 20426 Mr. Donald E. Chick, Town Manager Mr. R. Sweeney Town of Exeter New Hampshire Yankee Division 10 Front Street Public Service of New Hampshire Exeter, New Hampshire 03823 Company 7910 Woodmont Avenue Mr. William B. Derrickson Bethesda, Maryland 20814 Senior Vice President Public Service Company of New Hampshire Post Office Box 700, Route 1 Seabrook, New Hampshire 03874

2 Enclosure SEABROOK STATION, UNITS 1 AND 2 REQUEST FOR ADDITIONAL INFORMATION GL 83-28, ITEMS 4.2.1 AND 4.2.2.

1 INTRODUCTION public Service Company of New Hampshire, the applicant for Seabrook Station, Units 1 and 2, submitted their response to Generic Letter 83-28 on November 4, 1983. The response has been reviewed with respect to Items 4.1, 4.2.1 and 4.2.2 of the Generic Letter. The applicant's response was not sufficiently detailed to permit an evaluation of the adequacy of the periodic maintenance and trending programs for the breakers. The following additional information is required to evaluate compliance with Items 4.2.1 and 4.2.2.

I. Item 4.2.1 - Periodic Maintenance program for Reactor Trip Breakers.

Criteria for Evaluating Compliance with Item 4.2.1 .

The Seabrook Station, Units 1 and 2 Reactor Trip Systems utilize Westinghouse DS-416 circuit breakers. The primary criteria for an acceptable maintenance program for the DS-416 Reactor Trip Breaker (RTB) are contained in Westinghouse Maintenance Manual for the 05-416 Reactor Trip Circuit Breaker, Revision 0, October 1984. The NRC staff, Equipment Qualification Branch, has reviewed this document and endorsed the maintenance program described in it. More specifically, the criteria used to evaluate compliance include thosesitems in this document that relate to the safety function of the breaker, supplemented by those measures that must be taken to accumulate data for trending.

Issues Relating to Item 4.2.1 i

The applicant's response states that his maintenance program is based on the manufacturer's technical manual and includes: lubrication, housekeeping, and other items recommended by the equipment supplier. The maintenance program is not included with the applicant submittal.

The Seabrook Station, Units 1 and 2 periodic maintenance program for the reactor trip breakers should include, on a six-month basis (or when 500 breaker operations have been counted, whichever comes first):

1. General inspection to include checking of breaker's cleanliness, all bolts and nuts, pole bases, arc chutes, insulating link, wiring and auxiliary switches;

2. The retaining rings inspection, including those on the under-voltage trip attachment (UVTA) and shunt trip attachment (STA);

4

3. Arcing and main contacts inspection as specified by the Westinghouse Maintenance Manual;

4. UVTA check as specified by the Westinghouse Maintenance Manual, including replacement of UVTA if dropout voltage is greater than 60% or less than 30% of rated UVTA coil voltage;

5. STA check as specified by the Westinghouse Maintenance Manual;

- 6. Lubrication as specified by the Westinghouse Maintenance Manual;

7. Functional check of the breaker's operation prior to returning it

to service.

2 l

. t

,l' .

4.

I The applicant should confirm that his Periodic Maintenance Program for the reactor trip breakers includes, on a refueling interval basis (or when 500 breaker operations have been counted, whichever comes first):

+

1. Pre-cleaning insulation resistance measurement and recording;

2. RTB dusting and cleaning;

^

3. Post-cleaning insulation resistance measurement and recording, as specified by the Westinghouse Maintenance Manual; i

4. Inspection of main and secondary disconnecting contacts, bolt tightness, secondary wiring, mechanical parts, cell switches, instruments, relays and other panel mounted devices;

5. UVTA trip force and breaker , load check as specified by the Westinghouse Maintenance Manual; i

6. Measurement and recording RTB response time for the undervoltage trip;

-7. Functional test of the breaker prior to returning to service as specified by the Westinghouse Maintenance Manual.

The maintenance procedure should include a caution to the maintenance personnel against undocumented adjustments or modifications to RTBs.

I The applicant is to confirm that the periodic maintenance program includes these fourteen items at the specified intervals or commit to their inclusion.

1 II. Item 4.2.2 - Trending of Reactor Trip Breaker Parameters to ,

Forecast Degradation of Operability.

3 4

, - , , , . . , .- , - - , , . . , , , - - . .--w,n v.~, e-, .-. y , -.-,w-

.- e-n,---~,m-, -

, _ , , . _ , , -,. v. ,--, ,-w , , - - , , ,, -n v _ ,,w--

r o.

6 .

Criteria for Evaluating Compliance with Item 4.2.2 Four parameters have been identified as trendable and are included in the criteria for evaluation. These are (a) undervoltage trip attachment dropout voltage, (b) trip force, (c) breaker response time for undervoltage trip, and (d) breaker insulation resistance.

Issues Relating to Item 4.2.2 The applicant states that a history card on each breaker will be maintained and will be periodically reviewed for trends to facilitate forecasting failures.

The' applicant is to commit to inclusion of trip force, breaker response time and dropout voltage for undervoltage trip and breaker insulation resistanco as trending parameters. The applicant should also identify the .

organization which will perform trend analysis, how often the analysis will be performed and how the information derived from the analysis will be used to affect periodic maintenance.

37228 4

m

- . REQUEST FOR ADDITIONAL INFORMATION GL-83-28 ITEMS 2.1, 3.2.3, 4.5.2 and 4.5.3 Item 2.1 (part 1) - Incomplete Applicant must supply a statement confirming that reactor trip system components were reviewed and that they'are identified as safety-related on documents, procedures, and information handling systems.

Item 3.2.3 - Incomplete Results of review of test and maintenance programs shall identify any post-maintenance testing that may degrade rather than enhance safety and shall describe actions to be taken including submitting needed Technical Specification changes.

Item 4.5.2 - Incomplete Applicant needs to state if his plant is currently designed to permit on-line testing of the RTS. If not either design modifications that will pennit such testing shall be described along with an implementation schedule or justification for not providing on-line testing capability shall be provided.

Item 4.5.3 - Incomplete .

Applicant needs to supply results of review of existing or proposed intervals for on-line testing considering the concerns of 4.5.3.1 to 4.5.3.5 in the generic letter. Proposed Technical Specification changes resulting from this review shall be submitted for review.

0 5