ML18101B029

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Application for Amends to Licenses DPR-70 & DPR-75,modifying Spec 3/4.8.1.2 Electrical Power Sources - Shutdown
ML18101B029
Person / Time
Site: Salem  PSEG icon.png
Issue date: 09/28/1995
From: Storz L
Public Service Enterprise Group
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML18101B030 List:
References
LR-N95151, NUDOCS 9510050120
Download: ML18101B029 (10)
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': Public Service Electric and Gas Company Louis F. Storz Public Service Electric and Gas Company P.O, Box 236, Hancocks Bridge, NJ 08038 609-339-5700 Senior Vice President - Nuclear Operations SEP 2 8 1995 LR-N95151 LCR 95-23 United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Gentlemen:

REQUEST FOR AMENDMENT ELECTRICAL POWER SYSTEMS - SHUTDOWN SALEM GENERATING STATION UNIT NOS. 1 AND 2 DOCKET NOS. 50-272 AND 50-311 In accordance with the requirements of 10CFR50.90, Public Service Electric & Gas Company (PSE&G) hereby transmits a request for amendment to Facility Operating Licenses DPR-70 and DPR-75 for Salem Generating Station Unit Nos. 1 and 2 respectively. Pursuant to the requirements of 10CFR50.91(b)(l), a copy of this request for amendment has been sent to the State of New Jersey .

The proposed amendment modifies specification 3/ 4 .'8. 1. 2,

  • Electrical Power Sources - Shutdown. The surveillance requirement 4.8.1.2 is clarified by a Note to identify those surveillances which are required to be performed during Modes 5 and 6. The proposed changes are consistent with NUREG-1431, Standard Technical Specifications - Westinghouse Plants, Revision 1, dated April 1995.

The proposed change has been evaluated in accordance with 10CFR50.91(a) (1), using the criteria in 10CFR50.92(c), and it has been determined that this request involves no significant hazards considerations.

A description of the requested amendment, supporting information and analyses for the proposed change, and the basis for a no significant hazards consideration determination are provided in Attachment 1. The Technical Specification pages affected by the proposed changes are provided in Attachment 2. A cross reference between the current Salem Surveillance Requirements of Specification 3/4.8.1 and the corresponding surveillance requirements of NUREG-1431 is included in Attachment 3.

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. . SEP 2 8 1995 Od'cument Control Desk LCR 95-23 LR..:.N95151 Should you have any questions regarding this request, we will be pleased to discuss them with you.

Affidavit Attachments (2)

C Mr. T. T. Martin, Administrator - Region I

u. s. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Mr. L. Olshan, Licensing Project Manager - Salem U. s. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Mail Stop 14E21
Rockville, MD 20852 Mr. c. Marschall (S09)

USNRC Senior Resident Inspector Mr. K. Tosch, Manager IV NJ Department of Environmental Protection Division of Environmental Quality Bureau of Nuclear Engineering CN 415 .

Trenton, NJ 08625 95-4933

REF: LR-N95151 LCR 95-23 STATE OF NEW JERSEY )

) SS.

COUNTY OF SALEM )

L. F. Storz, being duly sworn according to law deposes and says:

I am Senior Vice President - Nuclear Operations for the Public Service Electric & Gas Company, and as such, I find the matters set forth in the above referenced letter, concerning the Salem Generating Station, Units Nos. 1 and 2, are true to the best of my knowledge, information and belief.

Subscribed and swAon~o before me this~ rth day 0 -~ot&m /JJ11. 1995 c,~~~m NCfar; Public of/New Jersey KIMBERLY JO BROWN NOTARY PUBLIC OF NEW JERSEY My Commission expires on Mv Commission Expires April 21, 1998

ATTACHMENT l LR-N95151 LCR 95-23 ELECTRICAL POWER SYSTEMS - SHUTDOWN I. DESCRIPTION OF THE PROPOSED CHANGES Specifications 4.8.1.2 is revised by adding a modifying Note identified as Insert l which is shown below and on the marked-up pages of Attachment 2.

Insert l Note The following surveillances are not required to be performed to maintain operability during Modes 5 and 6. These surveillance are: 4.8.1.1.1.b, 4.8.1.1.2.d.2, 4.8.1.1.2.d.3, 4.8.1.1.2.d.4, 4.8.1.1.2.d.6, 4.8.1.1.2.d.7, 4.8.1.1.2.d.9, 4.8.1.1.2.e, and 4.8~1.l.2.f.

The Bases for Specifications 3/4.8.l and 3/4.8.2 are included for information only. The bases are being revised by adding Insert 2 which is shown below and on the marked-up pages of Attachment 2.

  • Insert 2 Surveillance requirement 4.8.1.2 is modified by a Note. The reason for the Note is to preclude requiring the OPERABLE Diesel Generators (DG) from being paralleled with the offsite power network or otherwise rendered inoperable during performance of the surveillance requirement, and to preclude de-energizing a required ESF bus or disconnecting a required offsite circuit during performance of surveillance requirements. With limited AC sources available, a single event could compromise both the required circuit and the DG.

It is the intent that these surveillance requirements must still be capable of being met, but actual performance is not required during periods when the DG and offsite circuit are required to be OPERABLE. During Startup, prior to entering Mode 4, the surveillance requirements are required to be completed if the surveillance frequency has been exceeded or will be exceeded prior to the next scheduled shutdown.

II. REASON FOR THE CHANGES Due to the amount of equipment that is inoperable during a refueling outage, performance of the AC Sources 18 month surveillance requirements is not practicable. Performance of these surveillances with the limited availability of electrical power could compromise both the offsite power source and the onsite DGs. All surveillances will be completed prior to entry into Mode 4.

  • ATTACHMENT 1 2 LCR 95-23 LR-N95151 III *. JUSTIFICATION FOR CHANGES The Class lE AC electrical power distribution system consists of the offsite power sources and the onsite standby DGs. The design of the electrical power system provides independence and redundancy to ensure an available source of power to the Engineered Safety Feature (ESF) systems.

The Salem onsite Class lE distribution system is divided into three redundant trains, such that, loss of any one train does not prevent the minimum safety functions from being performed. Each train has connections to two offsite power sources and a single DG.

Offsite power is supplied from the switchyard by two e1ectrically and physically separated independent circuits.

The initial conditions of the design basis accident (OBA) and transient analyses assume ESF systems are operable. The electrical power sources are designed to provide sufficient capacity, capability, redundancy, and reliability to ensure the availability of necessary power to ES*F systems, so that the fuel, reactor coolant system, and containment design limits are not exceeded.

The operability of the minimum AC sources during Modes 5 and 6 ensures that:

a. The unit can be maintained in the shutdown or refueling condition for extended periods. *
b. Sufficient instrumentation and control capability is available for monitoring and maintaining unit status, and
c. Adequate AC electrical power is provided to mitigate events postulated during shutdown.

Many DBA's are analyzed in Modes 1, 2, 3, and 4 but have no corresponding analyses in Modes 5 and 6. Worst case bounding events are not deemed credible in Modes 5 and 6 because the energy contained within the reactor pressure boundary, reactor coolant temperature and pressure, and the corresponding stresses result in the probability of occurrence being significantly reduced and the consequences being minimized.

  • ATTACHMENT 1 3 LCR 95-23 LR-N95151

.The minimum specified systems satisfy the requirements of General Design Criteria 17 of Appendix "A" to 10CFR50 and the Surveillance Requirements for demonstrating OPERABILITY of the diesel generators are based upon the recommendations of Regulatory Guide 1.9, Selection of Diesel Generator Set Capacity for Standby Power Supplies, March 10, 1971, and Regulatory Guide 1.108, Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants, Revision 1, August 1977.

surveillance requirement 4.8.1.2 identifies those surveillances associated with Electrical Power systems -

Shutdown. The surveillance requirements of this specification refer to surveillance requirements of LCO 3.8.1.1 Electrical Power Systems - Operating. This surveillance requirement is modified by the new Note. The reason for the Note is to preclude requiring the operable DGs from being paralleled with the offsite power network, or otherwise rendered inoperable during performance of surveillance requirements and to preclude de-energizing a required 4160 Volt ESF bus or disconnecting a required offsite circuit during performance of the surveillance requirement. With limited AC Sources available, a single event could compromise both the required circuit and the DG.

It is the intent that these surveillance requirements must be still capable of being met, but actual performance is not required during periods when the DG and offsite circuit are required to be operable.

This change is consistent with NUREG-1431, Standard Technical Specifications - Westinghouse Plants with a minor exception. NUREG-1431, in the Note, identifies surveillances that are not required to be performed in Modes 5 and 6. The surveillance requirement of NUREG-1431 identifies three additional surveillances as not applicable.

These surveillances are Transfer of AC Sources, ESF Override, and Simultaneous start of all DGs. For convenience, these three surveillances have been added to the Note proposed for the revised Salem Unit Nos. 1 and 2 surveillance requirements. These surveillances are maintained in the Salem requirements, but have been included in the Note as not required to be performed. Attachment 3 contains a cross-reference between the current Salem Surveillance Requirements and the corresponding NUREG-1431 requirements.

  • ATTA~HMENT 1 4 LCR 95-23 LR-N95151

.Surveillance requirement 4.8.1.1.2.d.4 (NUREG-1431 SR 3.8.1.12) has been added to the proposed Note for the Salem Technical Specifications. Surveillance requirement 4.8.1.1.2.d.4 tests the DG in response to a Safeguards Equipment Control {SEC) signal. The SEC is not required to be operable in Modes 5 and 6. Surveillance requirement 4.8.1.1.2.a tests the DG every 31 days and provides a basis for establishing DG operability and availability. This surveillance will be performed during startup, prior to entry into Mode 4.

IV. DETERMINATION OF NO SIGNIFICANT HAZARDS CONSIDERATION PSE&G has, pursuant to 10CFR50.92, reviewed the proposed amendment to determine whether our request involves a significant hazards consideration. PSE&G has determined that operation of Salem Generating Station, Unit Nos. 1 and 2, in accordance with the proposed changes:

1. Will not involve a significant increase in the probability or consequences of an accident previously evaluated.

No component modification, system realignment, or change in operations will occur which could affect the probability of any accident or transient. The proposed addition of a Note will provide guidance on which surveillances are required to be performed in Modes 5 and 6. The Note will preclude rendering operable DGs inoperable, and/or preclude de-energizing a required ESF bus or disconnecting a required offsite circuit during the performance of the surveillance requirement.

Proposed changes do not eliminate any testing requirements, they simply clarify which tests will be performed in Modes 5 and 6, and which are required to be performed prior to entry into Mode 4. Therefore, the proposed changes do not involve a significant increase in the probability or consequences of an accident previously analyzed.

2. Will not create the possibility of a new or different kind of accident from any previously evaluated.

No component modification, system realignment, or change in operating procedure is required to implement the proposed change. The proposed change reduces the possibility of a single event impacting the operability of an ESF bus or its DG simultaneously. Therefore, these changes will not create the possibility of a new or different kind of accident from any accident previously evaluated.

  • ATTA'CHMENT 1 5 LCR 95-23 LR-N95151
3. .Will not involve a significant reduction in a margin of safety.

The proposed change will not alter any assumptions, initial conditions, or results of any accident analyses.

The Class lE equipment assumed available in the accident analyses and their designed capability to mitigate the consequences of any postulated accidents will not be changed. The addition of a Note to clarify the surveillance requirements will not involve a significant reduction in a margin of safety.

V. CONCLUSIONS Based on the above, Public Service Electric & Gas has determined that the proposed changes do not involve a significant hazards consideration.

  • LR-N95151
  • LCR 95-23 ATTACHMENT 2
  • Note The following surveillances are not required to be performed to maintain operability during Modes 5 and 6. These surveillance are: 4.8.1.1.1.b, 4.8.1.1.2.d.2, 4.8.1.1.2.d.3, 4.8.1.1.2.d.4, 4.8.1.1.2.d.6, 4.8.1.1.2.d.7, 4.8.1.1.2.d.9, 4.8.1.1.2.e, and 4.8.1.1.2.f.

INSERT 2 Surveillance requirement 4.8.1.2 is modified by a Note. The reason for the Note is to preclude requiring the OPERABLE DG(s) from being paralleled with the offsite power network or otherwise rendered inoperable during performance of the surveillance requirement, and to preclude de-energizing a required ESF bus or disconnecting a required offsite circuit during performance of surveillance requirements. With limited AC sources available, a single event could compromise both the required circuit and the DG. It is the intent that these surveillance requirements must still be capable of being met, but actual performance is not required during periods when the DG and offsite circuit are required to be OPERABLE. During Startup, prior to entering Mode 4, the surveillance requirements are required to be completed if the surveillance frequ~ncy has been exceeded or will be exceeded prior to the next scheduled shutdown.

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