ML20212F460

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Amends 246 & 237 to Licenses DPR-77 & DPR-79,respectively, Approving Request to Revise TSs to Allow Use of Fully Qualified & Tested Spare Inverter in Place of Any of Eight Required Inverters
ML20212F460
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 09/23/1999
From: Peterson S
NRC (Affiliation Not Assigned)
To:
Shared Package
ML20212F452 List:
References
NUDOCS 9909280213
Download: ML20212F460 (10)
v • d • e


Text

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e 4 UNITED STATES l l ,j

^t NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 2055H001  !

. . . . . ,o TENNESSEE VALLEY AUTHORITY DOCKET NO. 50-327 l SEQUOYAH NUCLEAR PLANT. UNIT 1 AMENDMENT TO FACILITY OPERATING LICENSE l

Amendment No. 246 License No. DPR-77

1. The Nuclear Regulatory Commission (the Commission) has found that: l A. The application for amendment by Tennessee Valley Authority (the licensee) dated June 24,1999, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's rules and regulaticqs set forth in 10 CFR Chapter I; B. The facility will operate in conformity with the application, 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 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.

l 9909290213 990923 PDR ADOCK 05000327 P PDR u

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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 l Operating License No. DPR-77 is hereby amended to read as follows:

(2) Technical Specifications The Technical Specifications contained in Appendices A and B, as revised through Amendment No. 246 , are hereby incorporated in the license. The licensee shall operate the facility in accordance with the Technical Specifications.

3. This license amendment is effective as of its dats of issuance and shall be i implemented within 45 days after issuance. I FOR THE NUCLEAR REGULATORY COMMISSION 4 b . h.dd>v' Sheri R. Peterson, Chief, Section 2 Project Directorate !!

Division of Licensing Project Management l Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical  ;

Specifications Date of issuance: September 23, 1999

I' ATTACHMENT TO LICENSE AMENDMENT NO. ?A6 FACILITY OPERATING LICENSE NO. DPR-77 DOCKET NO. 50-327 Replace the following pages of Appendix A Technical Specifications with the attached pages.

The revised pages are identified by amendment number and contain vertical lines indicating the area of change.

REMOVE INSERT 3/4 8-9 3/4 8-9 3/4 8-10 3/4 8-10 i

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. ELECTRICAL POWER SYSTEMS 3/4.0.2 ONSITE POWER DISTRIBUTION SYSTEMS A.C. DISTRIBUTION - OPERATING LIMITING CONDITION FOR OPERATION 3.8.2.1- The following A.C. electrical boards shall be OPERABLE and energized with tie breakers open between redundant boards:

6900 Volt Shutdown Doard 1A-A 6900 Volt Shutdown Board 1B-B 0300 Volt Shutdown Board 2A-A 6900 Volt Shutdown Board 2B-B 480 Volt Shutdown Board 1Al-A 480 Volt Shutdown Board 1A2-A 480 Volt Shutdown Board IB1-B 480 Volt Shutdown Board 1B2-B 480 Volt Shutdown Board 2Al-A 480 Volt Shutdown Board 2A2-A 480 Volt Shutdown Board 281-B 480 Volt Shutdown Board 2B2-B 120 Volt A.C. Vital Instrument Power Board Channels 1-I and 2-I energized from inverters 1-I.and 2-I connected to D.C. Channel I*#@. l 120 Volt A.C. Vital Instrument Power Board Channels 1-II.and 2-II energized from inverters 1-II and 2-II connected to D.C.

Channel II*#@. l 120 Volt A.C. Vital Instrument Power Board Channels 1-III and 2-III energized from inverters 1-III and 2-III connected to D.C.

Channel III*#@. l 120 Volt A.C. Vital Instrument Power Board Channels 1-IV and 2-IV energized from inverters 1-IV and 2-IV connected to D.C.

Channel IV*#@, l APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

a. With less than the above complement of A.C. boards OPERABLE and energized, restore the inoperable boards to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
b. With one inverter inoperable, energize the associated Vital Instrument Power Board within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />; restore the inoperable inverter to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT STT.NDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.8.2.1 The speci&ied A.C. boards and inverters shall be determined OPERABLE and energized with tie breakers open between redundant boards at least once per 7 days by verifying correct breaker alignment and indicated voltage on the  :

busses. )

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  • Two inverters may be disconnected from their D.C. source for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for the purpose of performing an equalizing charge on their associated  ;

battery bank provided (1) the vital instrument power board i.= **"""'LE rri. l l

l energized, and (2) the vital instrument power boards associated with the l

other battery banks are OPERABLE and energized f rom their respective inverters connected to their rerpective D.C. source.

  1. D.C. Channel V msy be substituted for any one channel of channels I-IV.

@ The spare inverter for a specified channe) may be substituted for one of the two inverters of the same channet.

SEQUOYAH - UNIT i 3/4 8-9 Amendment No. 37, 246 l

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.-, ELECTRICAL POWER SYSTEMI 1

A.C. DISTRIBUTION - SHUTDOWN LIMITING CONDITION FOR OPERATION 3.8.2.2 As a minimum, the following A.C. electrical boards and inverters shall be OLERABLE and energized:

2- 6900 volt shutdown boards, either 1A-A and 2A-A or 1B-B and 2B-B, 4 - 480 volt shutdown boards associated with the required OPERABLE 6900 volt shutdown boards, 2- 120 volt A.C. vital instrument power boards either Channels I and III or Channels II and IV energized from their respective inverters # l connected to their respective D.C. battery banks *, and 480 volt lR41 l shutdown boards.

APPLICABILITY: MODES 5 and 6.

bCTION:

With less than the above complement of A.C. boards and inverte'rs OPERABLE and energized, establish CONTAINMENT INTEGRITY within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.8.2.2 The specified A.C. boards and inverters shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated voltage on the bus.

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  • Any one of the inverters may be connected to D.C. Battery Bank V. lR41
  1. The spare inverter for a specified channel may ha substituted for one of the two inverters of the same channel.

SEQUOYAH - UNIT 1 3/4 8-10 Amendment No. 37, 246

e /pRio p +' - UNITED STATES s'

'j NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001

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TENNESSEE VALLEY AUTHORITY DOCKET NO. 50-328 SEQUOYAH NUCLEAR PLANT. UNIT 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 237 License No. DPR-79

1. The Nuclear Regulatory Commi:,sion (the Commission) has found that:

A. The application for amendment by Tennessee Valley Authority (the licensee) dated June 24,1999, 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; 4

B. The facility will operate in conformity with the application, 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 reguiations; D. The issuance of this 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 r.mendment is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.

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2. Accordingly, the license is amendec by changes to the Technical Specifications as l indicated in the attachment to this license amendment and paragraph 2.C.(2) of Facility I Operating License No. DPR-79 is hereby amended to read as follows:

l l (2) Technical Soecifications The Technical SpeciZeations contained in Appendras A and B, as revised i through Amendment No. 237 , are hereby incorporated in the license. The i licensee shall operate the facility in accordance with the Technical L Specifications. 1

3. This license amendment is effective as of its date of issuance and shell be implemented within 45 days of issuance, FOR THE NUCLEAR REGULATORY COMMISSION k, .h',- --

Sheri R. Peterson, Chief, Section 2 Project Directorate 11 Division of Licensing Project Management Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of Issuance: September 23, 1999 I

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4 ATTACHMENT TO LICENSE AMENDMENT NO. 237 j FACILITY OPERATING LICENSE NO. DPR-79 i DOCKEET NO 50-328 l Replace the following pages of Appendix A Technical Specifications with the attached pages.

The revised pages are identified by amendment number and contain vertical lines indic,ating the area of change.

REMOVE INSERT l 3/4 8-10 3/4 8-10 3/4 8-11 3/4 8-11

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., ELECTRICAL POWER SYSTEMS l 3/4.8.2 ONSITE POWER DISTRIBUTION SYSTEMS l A.C. DISTRIBUTION - OPERATING LIMITING CONDITION FOR OPERATION 3.8,2.1 The following A C. electrical boards and inverters shall be OPERP.BLE and energized with tie breakers open between redundant boards:

6900 Volt Shutdown Board 1A-A 6900 Volt Shutdown Board IB-B 6900 Volt Shutdown Board 2A-A 6900 Volt Shutdown Board 2B-B 430 Volt Snutdown Board 1Al-A 480 Volt Shutdown Board 1A2-A 480^ Volt shutdown Board 1B1-B 480 Volt Shutdown Board 1B2-B 480 Volt Shutdown Board 2Al-A 480 Volt Shutdown Board 2A2-A 480 Volt Shutdown Board 2B1-B 480 Volt Shutdown Board 2B2-B 120 Volt A.C. Vital Instrument Power Board Channels 1-I and 2-I energized from inverters 1-I and 2-I connected to D.C.

Channel I*#@. l 120 Volt A.C. Vital Instrument Power Board Channels 1-II and 2-II energized from inverter 1-II and 2-II connected to D.C.

  • Channel II*#@. l 120 Volt A.C. Vital Instrument Power Board Channels 1-III and 2-III energized from inverter 1-III and 2-III connected to D.C.

Channel III*#@, l 120 Volt A.C. Vital Instrument Power Board Channels 1-IV and 2-IV energized from inverter 1-IV and 2-IV connected to D.C.

Channel IV*#@. l APPLICABILITY: MODES 1, 2, 3 and 4. ,

i ACTION:

a. With less than the above complement of A.C. boards OPERABLE and energized, restore the inoperable boards to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT STANDBY within the next 6 hou:._. and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
b. With one inverter inoperable, energize the associated Vital Instrument Power Board within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />; restore the inoperable inverter to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.8.2.1 The specified A.C. boards and inverters shall be determined OPERABLE and energized with tie breakers open between redundant boards at least once per 7 days by verifying correct breaker alignment and indicated voltage on the busses. '

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  • Two inverters may be disconnected from their D.C. source for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for the purpose of performing an equalizing charge on eneir associated battery bank provide (1) th- "* 1 inn';;c?. cut power board is OPERABLE and

- . energized, and (2) the vital instrument power boards associated with the other battery banks are OPERABL3 and energized from their respective inverters connected to their respective D.C. source.

  1. D.C. Channel V may be substittred for any one channel of channels I - IV. lR29

@ The spare inverter for a specif3Mc thannel may be substituted for one of the two inverters of the same cha.nel.

SEQUOYAH - UNIT 2 3/4 8-10 Amendment No. 29, 237

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! ELECTRICAL POWER SYSTEMS l A.C. DISTRIBUTION - SHUTDOI l

LIMITING CONDITION FOR OPERATION 3.8.2.2 As a minimum, the following A.C. electrical boards and inverters shall be OPERABLE and energized:

2 - 6900 volt shutdown boards, either lA-A and 2A-A or 1B-B and 2B-B, 4 - 480 volt shutdown boards associated with the required OPERABLE 6900 volt shutdown boards, 2- 120 volt A.C. Vital instrument power boards either Channels I and III

. or Channels II and IV energized from their respectivo inverters # l l

connected to their respective D.C. battery banks,

  • and 480 volt shut- lR29 down boards.

APPLICABILITY: MODES 5 and 6.

i ACTION: .

l With less than the above complement of A.C. boarda and inverters OPERABLE and I energized, establish CONTAINMENT INTEGRITY within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.8.2.2 The specified A.C. boards and inverters shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated voltage on the bus.

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  • Any one of the inverters raay be connected to D.C. Battery Bank V* lR29
  1. The' spare inverter for a specified channel may be substituted for one of the two inverters of the same channel.

SEQUOYAH - UNIT 2 3/4 8-11 Amendment No. 29, 237

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