ML18096A631

Advises That Util 920131 Response to Bulletin 88-008, Thermal Stresses in Piping Connected to RCS, Acceptable

ML18096A631
Person / Time
Site:	Salem
Issue date:	04/08/1992
From:	Stone J Office of Nuclear Reactor Regulation
To:	Miltenberger S Public Service Enterprise Group
References
IEB-88-008, IEB-88-8, TAC-M69680, TAC-M69681, NUDOCS 9204200183
Download: ML18096A631 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 Docket Nos. 50-272 and 50-311 Mr. Steven E. Miltenberger Apri 1 8, 1992 Vice President and Chief Nuclear Officer Public Service Electric & Gas Company Post Office Box 236 Hancocks Bridge, New Jersey 08038

SUBJECT:

RESPONSE TO BULLETIN 88-08, THERMAL STRESSES IN PIPING CONNECTED TO REACTOR COOLANT SYSTEM, SALEM NUCLEAR GENERATING STATION, UNITS 1 AND 2 (TAC NOS. M69680 AND M69681)

By letter dated January 31, 1992, Public Service Electric and Gas Co. (PSE&G)"'

responded to the staff's September 16, 1991, and October 23,. 1991, letters that stated that your response to Bulletin 88-08 did not provide sufficient assurance that unisolable portions of all piping connected to the reactor coolant system will not be subjected to stresses that could cause fatigue failure during the remaining life of the units.

In response, PSE&G has proposed to provide double valve isolation in one line to prevent back leakage and to maintain continuous flow in the other two lines as a means to prevent thermal cycling.

However, the evaluation of these two methods by PSE&G has not been completed and the proposed schedule is to have them completed by the end of calendar year 1992.

The staff has the following observations concerning the proposed solutions:

I. For the line downstream from the high head charging pump cold leg injection check valves, the valve lineup is to be changed to provide double valve isolation.

In making this valve lineup change, the 900 gallon BIT tank will be isolated from the system and no overpressure protection is provided on the tank.

The relief valve was removed after~~he use of high concentration boric acid solution was no longer reqy}:red.

With this section i so 1 ated and no over pressure protection prQifded, the ASME code should be reviewed to ensure compliance.

Als~; without over pressure protection, the pressure could build up and over pressurize the tank and pipe or a pressure lock on the inlet and outlet valves could develop such that neither valve could be opened when required.

2.

For the alternate charging line and the pressurizer auxiliary spray line, the valve lineup would be changed to provide continuous flow.

The isolation valves are air operated valves, so the normal charging flow will be split into the three paths. This change in lineup may affect the operation of the plant. Because of that, the :ccid~nt _

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Mr. Steven April 8, 1992 analyses will have to be reviewed to determine what affect, if any, there is on those analyses. Also, normal operating procedures, abnormal operating procedures, emergency operating procedures, and training will have to be reviewed to recogniie this change in lineup.

It is expec.ted that the evaluations to be performed will respond to the above observations.

The proposed schedule for completion of. the evaluations, 6 months after completion of the Salem Unit 1 tenth refueling outage, would have the evaluations completed by December 9, 1992.

The staff finds this schedule to be acceptable.

When completed, please provide the results of the evaluations to the staff and include a schedule for implementation of the corrective actions. This requirement affects 9 or fewer respondents and, therefore, is not subject to Office of Management and Budget review under P.L.96-511.

cc:

See next page DISTRIBUTION:

. Docket File*

. NRC & Local PDRs PDI-2 Reading SVarga JCalvo CMil 1 er BMozafari JNorberg MO'Brien(2)

• Previous Concurrence OFFICE PDl-2 LA NAME MO' BRIEN 0AJ -or DATE f I <b /92fob JSTONE:tlc

? 1i~J92 OFFICIAL RECORD COPY FILENAME: A:\\SA69680.GEN Sincerely,

/SI James C. Stone, Senior Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation JStone OGC ACRS(lO)

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BMOZAFARI 03/12/92

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Mr. Steven April 8, 1992 analyses will have to be reviewed to determine what affect, if any, there is on those analyses. Also, normal operating procedures, abnormal operating procedures, emergency operating procedures, and training will have to be reviewed to recognize this change in lineup.

It is expected that the evaluations to be performed will respond to the above observations.

The proposed schedule for completion of the evaluations, 6 months after completion of the Salem Unit 1 tenth refueling outage, would have the evaluations completed by December 9, 1992.

The staff finds this schedule to be acceptable.

When completed, please provide the results of the evaluations to the staff and include a schedule for implementation of the corrective actions. This requirement affects 9 or fewer respondents and, therefore, is not subject to Office of Management and Budget review under P.L.96-511.

cc:

See next page Sincerely,

~~~

James C. Stone, Senior Project Manager Project Directorate 1-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

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Mr. Steven E. Miltenberger Public Service Electric & Gas Company cc:

Mark J. Wetterhahn, Esquire Winston & Strawn 1400 L Street NW Washington, DC 20005-3502 Richard Fryling, Jr., Esquire Law Department - Tower SE 80 Park Place Newark, NJ 07101 Mr. Calvin A. Vondra General Manager - Salem Operations Salem Generating Station P.O. Box 236 Hancocks Bridge, NJ 08038 Mr. S. LaBruna Vice President - Nuclear Operations Nuclear Department P*.O. Box 236 Hancocks Bridge, New Jersey 08038 Mr. Thomas P. Johnson, Senior Resident Inspector Salem Generating Station U.S. Nuclear Regulatory Commission Drawer I Hancocks Bridge, NJ 08038 Dr. Jill Lipoti, Asst. Director Radiation Protection Programs NJ Department of Environmental Protection CN 415 Trenton, NJ OQ625-0415

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Maryland People's Counsel American Building, 9th Floor 231 East Baltimore Street Baltimore, Maryland 21202 Maryland Mr. J. T. Robb, Director Joint Owners Affairs Philadelphia Electric Company 955 Chesterbrook Blvd., 51A-13 Wayne, PA 19087 Salem Nuclear Generating Station Richard Hartung Electric Service Evaluation Board of Regulatory Commissioners 2 Gateway Center, Tenth Floor Newark, NJ 07102 Regional Administrator, Region I U. S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Lower Alloways Creek Township c/o Mary 0. Henderson, Clerk Municipal Building, P.O. Box 157 Hancocks Bridge, NJ 08038 Mr. Frank X. Thomson, Jr., Manager Licensing and Regulation Nuclear Department P.O. Box 236 Hancocks Bridge, NJ 08038 Mr. David Wersan Assistant Consumer Advocate Office of Consumer Advocate 1425 Strawberry Square Harrisburg, PA 17120 Mr. J. A. Isabella MGR. - Generation Department Atlantic Electric Company P.O. Box 1500 1199 Black Horse Pike Pleasantville, NJ 08232 Carl D. Schaefer External Operations - Nuclear Delmarva Power & Light Company P.O. Box 231 Wilmington, DE 19899 Public Service Commission of Engineering Division ATTN:

Chief Engineer 231 E. Baltimore Street Baltimore, MD 21202-3486