NL-02-113, Gas Turbine Generator Fuel Oil Storage Requirements

Gas Turbine Generator Fuel Oil Storage Requirements

ML022410041
Person / Time
Site:	Indian Point
Issue date:	08/22/2002
From:	Dacimo F Entergy Nuclear Northeast, Entergy Nuclear Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-02-113
Download: ML022410041 (3)

Text

Entergy Nuclear Northeast Entergy Nuclear Operations, Inc Indian Point Energy Center 295 Broadway, Suite 1 SEntergy PO Box 249 Buchanan, NY 10511-0249 August 22, 2002 Re: Indian Point Unit No. 2 Docket No. 50-247 NL-02-113 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Stop 0-P1-17 Washington, DC 20555-0001

SUBJECT:

Indian Point Energy Center, Unit No. 2 LAR No.02-002 Gas Turbine Generator Fuel Oil Storage Requirements

REFERENCE:

1. ENO letter NL 02-002; same subject; F. Dacimo to U.S. NRC dated January 8, 2002.

Dear Sir; Entergy Nuclear Operations, Inc. (ENO) submitted a request for amendment (Reference 1) regarding the fuel oil storage requirements for the gas turbine generators. The amendment request identified proposed changes to Technical Specification Sections 3.7.C and 4.6. Proposed changes to the associated Technical Specification Bases were also provided to reflect the new fuel volume requirement and the results of the updated minimum loading calculation.

ENO has identified an additional location in the Bases (Section 3.7) where the updated minimum loading value should be stated. The attached Bases markup page shows the required change.

This change does not alter the conclusions of the 'No Significant Hazards Consideration' evaluation provided in Reference 1.

Should you or your staff have any questions regarding this submittal, please contact Mr. John F.

McCann, Manager, Nuclear Safety and Licensing at (914) 734-5074.

Sincerely, "Vice Presi en - Operations Indian Point 2 cc: next page

1. (o I

NL 02-113 Page 2 of 2 Mr. Hubert J. Miller Regional Administrator-Region I US Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Mr. Patrick D. Milano, Senior Project Manager, Section 1 Project Directorate I Division of Licensing Project Management US Nuclear Regulatory Commission Mail Stop O-8-2C Washington, DC 20555 NRC Senior Resident Inspector US Nuclear Regulatory Commission PO Box 38 Buchanan, NY 10511 Mayor, Village of Buchanan 236 Tate Avenue Buchanan, NY 10511 Mr. Paul Eddy NYS Department of Public Service 3 Empire Plaza Albany, NY 12223 Mr. William F. Flynn NYS ERDA Corporate Plaza West 286 Washington Ave. Extension Albany, NY 12223-6399

Attachment to NL-02-113 Supplemental Bases Markup Page for LAR 02-002 Any two of three diesel generators, the station auxiliary transformer or the separate 13.8 to 6.9 kV transformer are each capable of supplying the minimum safeguards loads and therefore provide separate sources of power immediately available for operation of these loads. Thus, the power supply system meets the single failure criteria required of the safety systems.

Three (3) gas turbine generators are directly available to the Indian Point site. One is located onsite (GT-1) and two additional units are located at the adjacent Buchanan Substation (GT-2 and GT-3). One gas turbine generator is more than adequate to provide an additional contingency of backup electrical power for maintaining the plant in a safe shutdown condition. The specified gas turbine generator minimum fuel inventory of'298 gallons assures that one gas turbine generator will be capable of supplying more than the maximum electrical load for the Indian Point Unit No. 2 alternate safe shutdown power supply system i.e., 7-O 1600 kW) or at least three (3) days. Commercial oil supplies and trucking z.

facilities *is to assure eliveries of additional fuel oil within one day's notice. r Conditions of a system-wide blackout could result in a unit trip. Since normal offsite power D supplies as required in Specification 3.7.A are not available for startup, it is desirable to be able to blackstart this unit with onsite power supplies as a first step in restoring the system to an operable status and restoring power to customers for essential service. Specification 3.7.D.1 provides for startup using the onsite gas turbine to supply the 6.9 kV loads and the diesels to supply the 480-volt loads. Tie breakers between the 6.9 kV and 480-volt systems are open so that the diesels would not be jeopardized in the event of any incident and would be able to continue to supply 480-volt safeguards power. The scheme consists of starting two reactor coolant pumps, one condensate pump, 2 circulating water pumps and necessary auxiliaries to bring the unit up to approximately 10% power. At this point, loads can be assumed by the main generator and power supplied to the system in an orderly and routine manner.

Specification 3.7.D.2 is identical with normal start-up requirements as in Specification 3.7.A except that offsite power is supplied exclusively from gas turbines with a minimum total power of 37 MW (nameplate rating), which is sufficient to carry out normal plant startup.

As a result of an investigation of the effect components, that might become submerged following a LOCA, may have on ECCS, containment isolation, and other safety-related functions, a fuse and a locked-open circuit breaker were provided on the electrical feeder to emergency lighting panel 218 inside containment. With the circuit breaker in the open position, containment electrical penetration H-70 is de-energized during the accident condition. Personnel access to containment may be required during power operation. Since it is highly improbable that a LOCA would occur during this short period of time, the circuit Amendment No. 196 3.7-8 Revised by letter March 28, 2002