ML20044C357

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Amends 48 & 37 to Licenses NPF-76 & NPF-80,respectively, Changing TS by Replacing Variable Shutdown Requirements W/ Constant Value & Changing Surveillance Requirement TS 4.1.1.1.2 Clarifying Reactivity Balance Calculations
ML20044C357
Person / Time
Site: South Texas  STP Nuclear Operating Company icon.png
Issue date: 03/09/1993
From: Black S
Office of Nuclear Reactor Regulation
To:
Shared Package
ML20044C358 List:
References
NUDOCS 9303220325
Download: ML20044C357 (9)


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' bo UNITED STATES

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oE NUCLEAR REGULATORY COMMISS!ON D sN N...../-

WASHINGTON, D.C. 20555 o

HOUSTON LIGHTING & POWER COMPANY CITY PUBLIC SERVICE BOARD OF SAN ANTONIO CENTRAL POWER AND LIGHT COMPANY CITY OF AUSTIN. TEXAS.

DOCKET NO. 50-498 f

SOUTH TEXAS PROJECT. UNIT 1 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 48 License No. NPF-76 1.

The Nuclear Regulatory Commission (the Commission) 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 September 28, 1992, as supplemented by [[letter::ST-HL-AE-4260, Forwards Response to NRC 921026 Telcon Request for Addl Info Re 920928 Application for Amends to Licenses NPF-76 & NPF-80,consisting of Rev 1 to SE for Proposed Rev to Shutdown Margin in TS 3.1.1.1|letter dated November 12, 1992]], 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; B.

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

i 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.

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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 Specifications The Technical Specifications contained in Appendix A, as revised through Amendment No. 48, and the Environmental Protection Plan contained in Appendix B, are hereby incorporated in the license. 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 15 days of issuance.

FOR THE NUCLEAR REGULATORY COMMISSION

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Suzanne C. Black t re,ctor Project Directorate IV-2 Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of Issuance:

March 9, 1993 i

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HOUSTON LIGHTING & POWER COMPANY j

CITY PUBLIC SERVICE BOARD OF SAN ANTONIO CENTRAL POWER AND LIGHT COMPANY

.a CITY OF AUSTIN. TEXAS DOCKET NO. 50-499 SOUTH TEXAS PROJECT. UNIT 2 AMENDMENT TO FACILITY OPERATING LICENSE e

Amendment No. 37 License No. NPF 1.

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

A.

The application for amendment by Houston _ Lighting & Power Company

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(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' September 28,1992,.

as supplemented by [[letter::ST-HL-AE-4260, Forwards Response to NRC 921026 Telcon Request for Addl Info Re 920928 Application for Amends to Licenses NPF-76 & NPF-80,consisting of Rev 1 to SE for Proposed Rev to Shutdown Margin in TS 3.1.1.1|letter dated November 12, 1992]],-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; B.

The facility will operate in conformity with the' applisation, as.

amended, the provisions of the Act, and the rules.and regulations of' 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 1

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 I

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 1

-- construction, operation and maintenance of the facility.

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2.

Accordingly, the license is amended by changes to the Technical.

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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:

2.

Technical Snecifications The Technical Specifications contained in Appendix A, as revised through Amendment No. 37, and the Environmental Protection Plan contained in Appendix B, are hereby incorporated in the license. 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 15 days of issuance.

FOR THE NUCLEAR REGULATORY COMMISSION yh -

Suzanne C. Bla irector Project Directorate IV-2 Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of Issuance:

March 9, 1993 e

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4 ATTACHMENT TO LICENSE AMENDMENT NOS. 4R AND 37 FACILITY OPERATING LICENSE NOS. NPF-76 AND NPF-80 DOCKET N05, 50-498 AND 50-499 Replace the following pages of the Appendix A Technical Specifications with the attached pages.

The revised pages are identified by Amendment number and contain vertical lines indicating the areas of change. The corresponding overleaf pages are also provided to maintain document completeness.

REMOVE INSERT 3/4 1-2 3/4 1-2 3/4 1-3 3/4 1-3 f'

1

4 3/4.1 REACTIVITY CONTROL SYSTEMS 3/4.1.1 BORATION CONTROL SHUTDOWN MARGIN - T,yg GREATER THAN 200 F LIMITING CONDITION FOR OPERATION 3.1.1.1 The SHUTDOWN MARGIN shall be greater than or equal to the limit as shown in Figure 3.1-1.

APPLICABILITY: MODES 1, 2*, 3, and 4.

ACTION:

With the SHUTDOWN MARGIN less than the limit as shown in Figure 3.1-1, imme-diately initiate and continue boration at greater than or equal to 30 gpm of a solution containing greater than or equal to 7000 ppm boron or equivalent until the required SHUTDOWN MARGIN is restored.

SURVEILLANCE REOUIREMENTS 4.1.1.1.1 The SHUTDOWN MARGIN shall be determined to be greater than or equal to the limit as shown in Figure 3.1-1:

a.

Within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> after detection of an inoperable control rod (s) and at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter while the rod (s) is inoperable.

If the inoperable control rod is immovable or untrippable, the above required SHUTDOWN MARGIN shall be verified acceptable with an increased allowance for the withdrawn worth of the immovable or untrippable control rod (s);

b.

When in MODE 2 with K less than 1, within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> prior to eff achieving reactor criticality by verifying that the predicted critical control rod position is within the limits of Specification-3.1.3.6; c.

Prior to initial operation above 5% RATED THERMAL POWER after each fuel loading, by consideration of the factors of Specifica-tion 4.1.1.1.1d. below, with the control banks at the maximum inser-tion limit of Specification 3.1.3.6; and i

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  • See Special Test Exceptions Specification 3.10.1.

SOUTH TEXAS - UNITS 1 & 2 3/4 1-1

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REACTIVITY CONTROL SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) d.

When in MODE 3 or 4, at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by consideration of the following factors:

1)

Reactor Coolant System boron concentration, 2)

Control rod position, 3)

Reactor Coolant System average temperature, 4)

Fuel burnup based on gross thermal energy generation, 5)

Xenon concentration, and 6)

Samarium concentration.

f 4.1.1.1.2 The overall core reactivity balance shall be compared to predicted 1

values to demonstrate agreement within 1% ok/k at least once per 31 Effective Full Power Days (EFPD). This comparison shall consider at least those factors stated in-Specification 4.1.1.1.1d., above. The predicted reactivity values shall be adjusted (normalized) to correspond to the actual core conditions prior to exceeding a fuel burnup of 60 EFPD after each fuel loading. The provisions of Specification 4.0.4 are not applicable.

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i SOUTH TEXAS - UNITS 1 & 2 3/4 1-2 Unit 1 - Amendment No. 48 Unit 2 - Amendment No. 37

4 REQUIRED SHUTDOWN MARGIN FOR MODES 1 AND 2:

1.75% DELTA RHO

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REQUIRED SHUTDOWN MARGIN MODES 3 AND 4 g S.O g

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500 1000 1500 2000 RCS CRITICAL BORON CONCENTRATION (PPM) for ARI Minus Most Reactive Stuck Rod SOUTH TEXA5 - UNITS 1 & 2 3/4 1-3 Unit 1 - Amendrent No. 48 Unit 2 - Amendment No. 37

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.REACTIVlTY CONTROL. SYSTEMS' l

,q SHUTDOWN MARGIN - T LE'SS THAN OR EQUAL TO 200'F avg LIMITING CONDITION FOR OPERATION

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3.1.1.2 The SHUTDOWN MARGIN shall be greater than or equal to the limit as shown in Figure 3.1-2.

j APPLICABILITY: MODE-5.

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ACTION:

.l With the SHUTDOWN MARGIN less than the limit as shown in-Figure'3.1-2, imme -

a diately initiate and continue boration at greater.than or equal to 30 gpm _of a solution containing greater than or equal to 7000' ppm boron or-equivalent until-1 the required SHUTDOWN MARGIN is restored.

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SURVEILLANCE RE0VIREMENTS 4.1.1.2 The SHUTDOWN MARGIN shall be determined to be greater than or equal' l

to'the limit as shown in Figure 3.1-2:

a.

Within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> after detection of an inoperable control _ rod (s).and at i

least once.per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter while the rod (s) is inoperable.

If.the incperable control rod is immovable or untrippable, the SHUTDOWN MARGIN shall be verified acceptable with an increased

-1 allowance for the withdrawn worth of the immovable or untrippable control rod (s); and.

b.

At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by consideration of the following fac' tors:

i 1)

Reactor Coolant System boron concentration, 1

2)

Control rod position, q

3)

Reactor-Coolant: System average temperature, 4)

Fuel burnup based on gross thermal energy generation, S)

Xenon concentration, and 6)

Samarium concentration.

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