ML20106F622

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Amends 81 & 70 to Licenses NPF-76 & NPF-80,respectively, Revising TS 4.8.1.1.2.e.7 to Allow Performance of 24 H Surveillance Test of DGs During Power Operation
ML20106F622
Person / Time
Site: South Texas  STP Nuclear Operating Company icon.png
Issue date: 02/21/1996
From: Alexion T
NRC (Affiliation Not Assigned)
To:
Shared Package
ML20106F625 List:
References
NUDOCS 9602260049
Download: ML20106F622 (9)


Text

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O-UNITED STATES i

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NUCLEAR REGULATORY COMMISSION WASHINGTON. D.C. 20666-0001

\\.....lt HOUSTON LIGHTING & POWER COMPANY CITY PUBLIC SERVICE BOARD OF SAN ANTONIO CENTRAL POWER AND LIGHT COMPANY CITY OF AUSTIN. TEXAS DOCKET NO. 50-498 SOUTH TEXAS PROJECT. UNIT 1 AMENDMENT TO FACILITY OPERATING LICENSE i

Amendment No. 81 License No. NPF-76 1.

The Nuclear Regulatory Comission (the Comission) has found that:

A.

The application for amendment by Houston Lighting & Power Company *

(HL&P) acting on behalf of itself and for the City Public Service Board of San Antonio (CPS), Central Power and Light Company (CPL),

and City of Austin, Texas (C0A) (the licensees), dated May 22, 1995, as supplemented by letter dated October 9, 1995, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Comission's rules and regulations set forth in 10 CFR Chapter I; B.

The facility will operate in conformity with the application, as amended, the provisions of the Act, and the rules and regulations of the Comission; C.

There is reasonable assurance:

(i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Comission's regulations; D.

The issuance of this license amendment will not be inimical to the comon defense and security or to the health and safety of the public; and E.

The issuance of this amendment is in accordance with 10 CFR Part 51 of the Comission's regulations and all applicable requirements have been satisfied.

  • Houston Lighting & Power Company is authorized to act for the City Public Service Board of San Antonio, Central Power and Light Company and City of Austin, Texas and has exclusive responsibility and control over the physical construction, operation and maintenance of the facility.

9602260049 960221 PDR ADOCK 05000498 P

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, 2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment and Paragraph 2.C.(2) of Facility Operating License No. NPF-76 is hereby amended to read as follows:

2.

Technical Soecifications The Technical Specifications contained in Appendix A, as revised through Amendment No. 81, and the Environmental Protection Plan contained in Appendix B, are hereby incorporated in the license.

l The licensee shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.

3.

The license amendment is effective as of its date of issuance to be implemented within 30 days of issuance.

FOR THE NUCLEAR REGULATORY COMMISSION

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Thomas W. Alexion, Proje t Manager Project Directorate IV-I Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of Issuance:

February 21, 1996 1

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UNITED STATES g

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NUCLEAR REGULATORY COMMISSION j

WASHINGTON, D.C. 30006-0001 HOUSTON LIGHTING & POWER COMPANY CITY PUBLIC SERVICE BOARD OF SAN ANTONIO CENTRAL POWER AND LIGHT COMPANY CITY OF AUSTIN. TEXAS DOCKET NO. 50-499 4

SOUTH TEXAS PROJECT. UNIT 2 AMENDMENT TO FACILITY OPERATING LICENSE 1

l Amendment No. 70 License No. NPF-80 l

1.

The Nuclear Regulatory Commission (the Commission) has found that:

i 1

i A.

The application for amendment by Houston Lighting & Power Company *

(HL&P) acting on behalf of itself and for the City Public Service Board of San Antonio (CPS), Central Power and Light Company (CPL),

and City of Austin, Texas (C0A) (the licensees), dated May 22, 1995, as supplemented by letter dated October 9,1995, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's rules and regulations set forth in 10 CFR Chapter I; i

B.

The facility will operate in conformity with the application, as amended, the provisions of the Act, and the rules and regulations of l

the Commission; C.

There is reasonable assurance:

(i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D.

The issuance of this license amendment will not be inimical to the common defense and security or to the health and safety of the public; and E.

The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.

s

  • Houston Lighting & Power Company is authorized to act for the City Public L

Service Board of San Antonio, Central Power and Light Company and City of i

- Austin, Texas and has exclusive responsibility and control over the physical construction, operation and maintenance of the facility.

i

' 2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment and Paragraph 2.C.(2) of Facility Operating License No. NPF-80 is hereby amended to read as follows:

4 2.

Technical Specifications The Technical Specifications contained in Appendix A, as revised i

through Amendment No. 70, and the Environmental Protection Plan contained in Aspendix B, are hereby incorporated in the license.

The licensee siall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.

3.

The license amendment is effective as of its date of issuance to be implemented within 30 days of issuance.

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FOR THE NUCLEAR REGULATORY COMMISSION kJ V'

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Thomas W. Alexion, Pr ject Manager Project Directorate IV-1 Division of Reactor Projects III/IV l

Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of Issuance: February 21, 1996

l 4

i ATTACHMENT TO LICENSE AMENDMENT NOS. 81 AND 70 i

FACILITY OPERATING LICENSE NOS. NPF-76 AND NPF-80 1

DOCKET NOS. 50-498 AND 50-499 i

Replace the following pages of the Appendix A Technical Specifications with the attached pages. The revised pages are identified by Amendment number and contain marginal lines indicating the areas of change.

The corresponding overleaf pages are also provided to maintain document completeness.

REMOVE INSERT 3/4 8-5 3/4 8-5 3/4 8-8 3/4 8-8 l

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l ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

I is loaded with the ESF leads. After energization, the l

steady-state voltage and frequency of the ESF busses shall be maintained at 4160 i 416 volts and 60 i 1.2 Hz during 1

this test; and 1

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c)

Verifying that all automatic diesel generator trips, except engine overspeed, generator differential, and low lube oil pressure are automatically bypassed upon loss of i

voltage on the ESF bus comeurrent with a Safety Injection i

Actuation signal.

7)*) Verifying the standby diesel generator operates for at least I

24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this t the diesel generator shall be loaded to 5700 to 6050 kW(,e,g) and during j

the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of thigtest, the diesel generator shall be loaded to 5000 to 5500 kW.

The steady-state generator 3

voltage and frequency shall be 4160 t 416 volts and 60 i 1.2 Hz i

during this test. Within 5 minutes after completing this 24-

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hour test, pyform a fast start per Specification j

4.8.1.1.2a.2 );

j 8)

Verifying that the auto-connected loads to each standby diesel generator do not exceed the 2000-hour rating of 5935 kW; 9)

Verifying the standby diesel generator's capability to:

i a)

Synchronize with the offsite power source while the generator is loaded with its ESF loads upon a simulated restoration of offsite power, i

b)

Transfer its loads to the offsite power source, and

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c)

Be restored to its standby status.

10)

Verifying that with the standby diesel generator operating in a i

test mode, connected to its bus, a simulated Safety Injection signal overrides the test mode by:

(1) returning the diesel

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generator to standby operation, and (2) autog'a,tically energizing the ESF loads with effsite power; l

11) Verifying that the automatic lead sequence timer is OPERABLE with the first sequenced load verified to be loaded between 1.0 second and 1.6 seconds, and all other load blocks within fl0%

4 of its design interval; i

12) Verifying that the standby diesel generator emergency stop lockout feature prevents diesel generator starting; and I

SOUTH TEXAS - UNITS 1 & 2 3/4 8-5 Unit 1 - Amendment No. 68,81 i-Unit 2 - Amendment No. 67,70 i

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I-ELECTRICAL POWER SYSTEMS SURVEILLANCE REOUIREMENTS (Continued)

13) Demonstrating the OPERABILITY of the automatic load shed bypass and the manual load shed reinstatement features of the load sequencer.

f.

At least once per 10 years or after any modifications which could affect standby diesel generator interdependence by starting all standby diesel generators simultaneously, during shutdown, and verifying that all standby diesel generators accelerate to at least 600 rpm in less than or equal to 10 seconds; and g.

At least once per 10 years by:

1)

Draining each fuel tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite solution, or equivalent, and 2)

Performing a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection ND of the ASME Code at a test pressure equal to 110% of the system design pressure.

4.8.1.1.3 Reports - All standby diesel generator failures, valid or nonvalid, shall be reported to the Commission in a Special Report pursuant to Specification 6.9.2 within 30 days. Reports of standby diesel generator 3

failures shall include the information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

If the number of failures in the last 100 valid tests (on a per nuclear unit basis) is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108 Revision 1, August 1977.

f SOUTH TEXAS - UNITS 1 & 2 3/4 8-6 Unit 1 - Amendment No. 68 l

Unit 2 - Amendment No. 57

Table 4.8-1 DIESEL GENERATOR TEST SCHEDULE NUMBEROFFAILURESg NUMBEROFFAILURESIg8 l

LAST 20 VALID TESTS LAST 100 VALID TESTS TEST FREQUENCY 5I s4 Once per 31 days 12*

25 Once per 7 days I

SPECIFICATION NOTATIONS

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m Loss of one 13.8 kV Standby Bus to 4.16 kV ESF bus line constitutes loss of one offsite source. Loss of two 13.8 kV Standby busses to 4.16 kV ESF 4

bus lines constitutes loss of two offsite sources.

i m

All diesel generator starts for the purpose of these surveillances may be preceded by,a prelube period.

A diesel generator start in less than or equal to 10 seconds (fast start) m shall be performed every 184 days. All other diesel generator starts for the purpose of this surveillance may be modified starts inyolving reduced fuel (load limit) and/or idling and gradeal acceleration to synchronous speed.

m Generator loading may be accomplished in accordance with vendor j

recommendations, including a warmup period prior to loading.

L m

The diesel generator start for this surveillance may be a modified start (see SR 4.8.1.1.2a.2)).

l m

Momentary transients outside this load range due to changing conditions on the grid shall not invalidate the test.

m.

If Specification 4.8.1.1.2a.2) is not satisfactorily completed, it is not necessary to repeat the preceding 24-hour test.

Instead, the standby diesel generator may be operated at 5000-5500 kW for a minimum of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> j

or until operating temperature has stabilized.

m Criteria for determining number of failures and number of valid tests shall be in accordance with Regulatory Position C.2.e of Regulatory Guide l

1.108, but determined on a per diesel generator basis.

For the purpose of determining the required test frequency, the previous test failure count may be reduced to zero if a complete diesel overhaul 4

to like-new condition is completed, provided that the overhaul, including j

appropriate post-maintenance operation and testing, is specifically approved by the manufacturer And if acceptable reliability has been i

demonstrated. The reliability criterion shall be the successful completion of 14 consecutive tests in a single series. Ten of these tests shall be in accordance with the routine Surveillance Requirements SOUTH TEXAS - UNITS 1 & 2 3/4 8-7 Unit 1 - Amendment No. 68 l

Unit 2 - Amendment No. 57 4

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SPECIFICATION NOTATIONS (Continued) 4.8.1.1.2a.2 and 4.8.1.1.2a.3 and four tests in accordance with the 184-day testing requirement of Surveillance Requirements 4.8.1.1.2a.2 and 4.8.1.1.2a.3.

If this criterion is not satisfied during the first series of tests, any alternate criterion to be used to transvalue the failure count to zero requires NRC approval.

-no The a:seciated test frequency shall be maintained until seven consecutive failure free demands have been performed And the number of failures in the last 20 valid demands has been reduced to one.

oo) This test may be performed during power operation provided that the other two diesel generators are operable.

SOUTH TEXAS - UNITS 112 3/4 8-8 Uit 1 - Amendment No. 68,81 Uit 2 - Amendment No. 67,70

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