ML20093H591
| ML20093H591 | |
| Person / Time | |
|---|---|
| Site: | North Anna  (NPF-04-A-194, NPF-07-A-175, NPF-4-A-194, NPF-7-A-175) |
| Issue date: | 10/11/1995 |
| From: | Matthews D NRC (Affiliation Not Assigned) |
| To: | |
| Shared Package | |
| ML20093H593 | List: |
| References | |
| NUDOCS 9510200252 | |
| Download: ML20093H591 (17) | |
Text
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UNITED STATES y-l' s
j NUCLEAR REGULATORY COMMISSION t
WASHINGTON, D.C. 2066H001
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VIRGINIA ELECTRIC AND POWER COMPANY OLD DOMINION ELECTRIC COOPERATIVE DOCKET NO. 50-338 NORTH ANNA POWER STATION. UNIT NO. 1 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.194 L'icense No. NPF-4 i
1.
The Nuclear Regulatory Comission (the Comission) has found that:
A.
The application for amendment by Virginia Electric and Power Company et al., (the licensee) dated March 30, 1995 as i
supplemented by letter dated August 24, 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; j
B.
The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the j
Comission; C.
There is reasonable assurance (1) 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 comon defense and security or to the health and safety of the public; and 4
i E.
The issuance of this amendment is in accordance with 10 CFR Part 51 of the Comission's regulations and all applicable requirements j
have been satisfied.
1 9510200252 951011 PDR ADOCK 05000338 P
. 2.
Accordingly, the license is amended by changes to the Technical Speci-fications as indicated in the attachment to this license amendment, and paragraph 2.D.(2) of Facility Operating License No. NPF-4 is hereby amended to read as follows:
(2) Technical Soecifications The Technical Specifications contained in Appendices A and B, as l
revised through Amendment No. 194, are hereby incorporated in the license. The licensee shall operate the facility in accordance with the Technical Specifications.
l 3.
This license amendment is effective as of its date of issuance and shall l
be implemented within 30 days.
l l
FOR THE NUCLEAR REGULATORY COMMISSION M (, bLtd 66[
David B. Matthews, Director Project Directorate II-l Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Attachment:
Changes to the Technical Specifications Date of Issuance:
October 11, 1995 l
ATTACHMENT TO LICENSE AMENDMENT NO. 194 TO FACILITY OPERATING LICENSE NO. NPF-4 1
DOCKET NO. 50-338 Replace the following pages of the Appendix "A" Technical Specifications with the enclosed pages as indicated. The revised pages are identified by amendment number and contain vertical lines indicating the area of change.
Remove Paaes Insert Paaes 3/4 7-17 3/4 7-17 i
1 3/4 7-17a 3/4 7-17a 3/4 7-17b 3/4 7-18 3/4 7-18 3/4 7-18a 3/4 7-18a
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PLANT SYSTEMS 3/4.7.3 COMPONENT COOLING WATER SYSTEM i
3/4.7.3.1 COMPONENT COOLING WATER SUBSYSTEM - OPERATING l
LIMITING CONDITION FOR OPERATION 3.7.3.1 Three component cooling water subsystems (shared with Unit 2) shall be OPERABLE ** ** with each subsystem consisting of:
l a.
One OPERABLE component cooling water pump and, b.
One OPERABLE component cooling water heat exchanger.
APPLICABILITY:
Either Unit in MODES 1. 2,3, or 4.
ACTION:
a.
With one required component cooling water subsystem inoperable, return the component cooling subsystem to OPERABLE status within the next 7 days, or place both units in 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 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
b.
With two required component cooling water subsystems inoperable, place both units in HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, and within the next hour, initiate actions to place both units in COLD SHUTDOWN and continue until COLD SHUTDOWN is achieved, c.
With no component cooling water available to supply the residual heat removal heat exchangers to cool the units, place both units in HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and remain in HOT SHUTDOWN until alternate means of decay heat removal can be implemented. Continue actions until both units are in COLD l
SHUTDOWN.
For the purpose of this Technical Specification, each subsystem is considered OPERABLE ifit is operating or ifit can be placed in service from a standby condition (l
by manually unisolating a standby heat exchanger and/or manually starting a standby pump.
- For the purpose of service water system upgrades associated with the supply and return piping to/from the component cooling water heat exchangers (CCHXs), the component cooling water subsystems shall be considered OPERABLE with only one service water loop to/from the CCHXs provided all other requirements in this specification are met.
This condition is permitted two times only (once for each SW loop) for a duration of up to 49 days each. During each period of operation with only one SW loop available to/from the CCHXs the provisions of Specification 3.0.4 are not applicable. Upon completion of the work associated with the second 49-day period, this footnote will no longer be applicable.
NORTH ANNA - UNIT 1 3/4 7-17 Amendment No. 49.194 l
PLANT SYSTEMS 3/4.7.3 COMPONENT COOLING WATER SYSTEM l
3L4,7.3.1 COMPONENT COOLING WATER SUBSYSTEM - OPERATING SURVEILLANCE REQUIREMENTS 1
4.7.3.1 Three component cooling water subsystems shall be demonstrated OPERABLE:
a.
At least once per 31 days by verifying that each valve (manual, power operated or automatic) servicing in the flow path of the residual heat removal system that is not locked, sealed, or otherwise secured in position, is in its correct position, b.
Each component cooling water pump shall be tested in accordance with Specificadon 4.0.5.
i l
l NORTH ANNA - UNIT 1 3/4 7-17a Amendment.gf 1
i
PLANT SYSTEMS 3/4.7.3 COMPONENT COOLING WATER SYSTEM 3/4.7.3.2 COMPONENT COOLING WATER SUBSYSTEM - SHUTDOWN LIMITING CONDITION FOR OPERATION 3.7.3.2 Two component cooling water subsystems (shared with Unit 2) shall be OPERABLE
- with each subsystem consisting of:
a.
One OPERABLE component cooling water pump and, b.
One OPERABLE component cooling water heat exchanger.
APPLICABILITY:
Both Units in MODES 5 or 6.
ACTION:
With one required component cooling water subsystem inoperable,immediately suspend all operations involving an increase in the reactor decay heat load or a reduction in boron concentration of the Reactor Coolant System.
SURVEILLANCE REQUIREMENTS 4.7.3.2 At least two component cooling water subsystems shall be demonstrated OPERABLE:
At least once per 31 days by verifying that each valve (manual, power operated or a.
automatic) the flow path of the residual heat removal system that is not locked, sealed, or otherwise secured in position, is in its correct position.
b.
Each component cooling water pump shall be tested in accordance with Specification 4.0.5.
For the purposes of this Technical Specification, each subsystem is considerea OPERABLE if it is operating or if it can be placed in service from a standby condition by manually unisolating a standby heat exchanger and/or manually starting a standby pump.
NORTH ANNA - UNIT 1 3/4 7-17b Amendment No.194 l
3 PLANT SYSTEMS 3/4.7,4 SERVICE WATER SYSTEM 3/4.7.4.1 SERVICE WATER SYSTEM - OPER ATING LISIITING CONDITION FOR OPERATION 3.7.4.1 Two service water loops (shared with Unit 2) shall be OPERABLE with each loop consisting'of:
a.
Two OPERABLE service water pumps (excluding auxiliary service water pumps) with their associated normal and emergency power supplies
- and l
b.
An OPERABLE flow path capable of providing cooling for OPERABLE plant components and transferring heat to the service water reservoir.*
]
APPLICABILITY:
Either Unit in MODES 1,2,3 or 4.
ACTION:
a.
With one service water pump inoperable, within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> throttle component cooling water heat exchanger flows, in accordance with approved operating procedures, to ensure the remaining service water pumps are capable of providing j
adequate flow to the recirculation spray heat exchangers. The provisions of Specification 3.0.4 are not applicable once component cooling heat exchangers flows are throttled.
b.
With two service water pumps inoperable, perform ACTION 3.7.4.1.a within I hour and restore at least one service water pump to OPERABLE status within j
72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or place both units in 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 />.
With one service water loop inoperable, except as provided in ACTION 3.7.4.1.a.
c.
restore the inoperable loop to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or place both units in 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 />.
1 For the purpose of service water system upgrades associated with the supply and return piping to/from the component cooling water heat exchangers (CCHXs), one of the two service water (SW) loops is permitted to temporarily bypass the CCHXs, provided all other requirements in this specification are met. This condition is pemiitted two times 4
only (once for each SW loop) for a duration of up to 49 days each. During each period of operation with only one SW loop available to/from the CCHXs, four out of four SW pumps (excluding the auxiliary SW pumps) shall remain OPERABLE. With one SW pump inoperable, work may continue provided actions are taken to either restore the pump to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or restore both SW headers to/from the CCHXs to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or place both units in 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 />.
During each period of operation with only one SW loop available to/from the CCHXs.
the automatic closure feature of the SW valves servicing the CCHXs shall be oefeated to ensure SW tiow to the CCHXs is not interrupted. During each period of operation with only one SW loop available to/from the CCHXs, the provisions of Specification 3.0.4 are not applicable, provided two SW loops are capable of providing cooling for the other OPER ABLE plant components. Upon completion of the work associated with the second 49-day period, this footnote will no longer be applicable.
c 7
NORTH ANNA - UNIT 1 3/4 7-18 Amendment No. 3.57.7" 152, M3,194
5 ELANT SYSTEMS 3/4.7.4 SERVICE WATER SYSTEM 3/4.7.4.1 S_ERVICE WATER SYSTEM - OPER ATING LIMITING CONDITION FOR OPERATION d.
The allowable time that one of the two service water loops can be inoperable as specified in ACTION 3.7.4.1.c may be extended beyond 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> up to 168 hours0.00194 days <br />0.0467 hours <br />2.777778e-4 weeks <br />6.3924e-5 months <br /> as part of service water system upgrades
- provided 3 out of 4 service water pumps (the third pumps does not require auto start capability) and 2 out of 2 auxiliary service water pumps have been OPERABLE since initial entry into the action statement and remain OPERABLE during the extended action statement 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 />.
With two service water loops inoperable for reasons other than described in e.
ACTION 3.7.4.1.b, place both units in HOT SHUTDOWN within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and within the following hour, initiate actions to place both units in COLD SHUTDOWN and continue actions until both units are in COLD SHUTDOWN.
SURVEILLANCE REQUIREMENTS 4.7.4.1 At least two service water loops shall be demonstrated OPERABLE:
a.
At least once per 31 days by verifying that each valve (manual, power operated or automatic) servicing safety related equipment that is not locked, sealed, or otherwise secured in position, is in its correct position.
b.
At least once per 6 months by measurement of the movement of the pumphouse and wing walls.
c.
At least once per 18 months during shutdown, by:
1.
Verifying that each automatic valve servicing safety related equipment actuates to its correct position on an actual or simulated safety injection signal.
2.
Verifying that each automatic service water valve actuates to its correct position on an actual or simulated containment high-high signal.
d.
Enh service water pump will be tested in accordance with Specification 4.0.5.
Isolation of one service water loop for up to 168 hours0.00194 days <br />0.0467 hours <br />2.777778e-4 weeks <br />6.3924e-5 months <br /> is permitted only as part of service water system upgrades. System upgrades include modification and maintenance activities associated with the installation of new discharge headers and spray arrays, mechanical and chemical cleaning of service water piping and valves, pipe repair and replacement, valve repair and replacement, installation of corrosion mitigation measures and inspection of and repairs to buried piping interior coatings and pump or valve house components.
NORTH ANNA - UNIT 1 V4 7-18a Amendment No.152.194
$R ftf c
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t UNITED STATES y
j NUCLEAR REGULATORY COMMISSION f
WASHINGTON, D.C. 20666-0001
'+9.....,o VIRGINIA ELECTRIC AND POWER COMPANY OLD DOMINION ELECTRIC COOPERATIVE DOCKET NO. 50-339 NORTH ANNA POWER STATION. UNIT NO. 2 AMENDMENT TO FACILITY OPERATING LICENSI Amendment No. 175 License No. NPF-7 1.
The Nuclear Regulatory Comission (the Comission) has found that:
A.
The application for amendment by Virginia Electric and Power Company et al., (the licensee) dated March 30, 1995, as supplemented by letter dated August 24, 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, 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; i
D.
The issuance of this amendment will not be inimical to the common l
defense and security or to the health and safety of the public; and l
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.
i l
l l
l
i l',
i 2.
Accordingly, the license is amended by changes to the Technical Speci-4 fications as indicated in the attachment to this license amendment, and paragraph 2.C.(2) of Facility Operating License No. NPF-7 is hereby amended to read as follows.
t 1
(2) Technical Soecifications The Technical Specifications contained in Appendices A and B, as revised through Amendment No. 175, are hereby incorporated in
)
the license. The licensee shall operate the facility in s
accordance with the Technical Specifications.
1 3.
This licensa amendment is effective as of its date of issuance and shall be implemented within 30 days.
FOR THE NUCLEAR REGULATORY COMMISSION
)
S 0E David B. Matthews, Director Project Directorate 11-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Attachment:
Changes to the Technical Specifications Date of Issuance:
October 11, 1995
ATTACHMENT TO LICENSE AMENDMENT NO.175 TO FACILITY OPERATING LICENSE NO. NPF-7 DOCKET NO. 50-339 Replace the following pages of the Appendix "A" Technical Specifications with the enclosed pages as indicated. The revised pages are identified by amendment number and contain vertical lines indicating the area of change.
The corresponding overleaf pages are also provided to maintain document completeness.
Remove Paaes Insert Paaes 3/4 7-14 3/4 7-14 3/4 7-14a 3/4 7-14a 3/4 7-14b 3/4 7-15 3/4 7-15 3/4 7-15a 3/4 7-15a 4
J d
k
PLANT SYSTEMS 3/4.7.2 STEAM GENERATOR PRESSURE / TEMPERATURE LIMITATION LIMITING CONDITION FOR OPERATION 3.7.2.1 The temperatures of both the primary and secondary coolants in the steam generators shall be greater than 70*F when the pressure of either coolant in the steam generator is greater than 200 osig.
APPLICABILITY:
At all times.
ACTION:
With the requirements of the above specification not satisfied:
a.
Reduce the steam generator pressure of the applicable side to less than or equal to 200 psig within 30 minutes, and b.
Perform an engineering evaluation to determine the effect of the overpressurization on the structural integrity of the steam generator.
Determine that the steam generator remains acceptable for continued operation prior to increasing its temperatures above 200'F.
SURVEILLANCE REQUIREMENTS 4.7.2.1 The pressure in each side of the steam generator shall be determined to be less than,200 psig at least once per hour when the tempera-ture of either the primary or secondary coolant is less than 70'F.
1 NORTH ANNA - UNIT 2 3/4 7-13
e.
PLANT SYSTEMS 3/4.7.3 COMPONENT COOLhNG WATER SYSTEM 3/4.7.3.1 COMPONENT COOLING WATER SUBSYSTEM - OPERATING LIMITING CONDITION FOR OPERATION l
3.7.3.1 Three component cooling water subsystems (shared with Unit 1) shall be OPERABLE * ** with each subsystem ccnsisting of:
l a.
One OPERABLE component cooling water pump and, i
b.
One OPERABLE component cooling water heat exchanger.
~
APPLICABILITY:
Either Unit in MODES 1. 2,3. or 4.
l ACTION:
a.
With one required component cooling water subsystem inoperable, return the component cooling subsystem to OPERABLE status within the next 7 days, or place both units in 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 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
b.
With two required component cooling water subsystems inoperable, place both units in HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, and within the next hour, initiate actions to place both units in COLD SHUTDOWN and continue until COLD SHUTDOWN is achieved.
c.
With no component cooling water available to supply the residual heat removal heat exchangers to cool the units, place both units in HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and remain in HOT SHUTDOWN until alternate means of decay heat removal can be implemented. Continue actions until both units are in COLD SHUTDOWN.
s For the purpose of this Technical Specification, each subsystem is considered OPERABLE if it is operating or if it can be placed in service from a standby condition by manually unisolating a standby heat exchanger and/or manually starting a standby pump.
- For the purpose of service water system upgrades associated with the supply and return piping to/from the component cooling water heat exchangers (CCHXs), the component cooling water subsystems shall be considered OPERABLE with only one service water loop to/from the CCHXs. provided all other requirements in this specification are met.
This condition is permitted two times only (once for each SW loop) for a duration of up to 49 days each. During each period of operation with only one SW loop available to/from the CCHXs. the provisions of Specification 3.0.4 are not applicable. Upon completion of the work associated with the second 49-day period, this footnote will no longer be applicable.
NORTH ANNA - UNIT 2 3/4 7-14 Amendment No. 440.175 4
PLANT SYSTEMS 3/4.7.3 COMPONENT COOLING WATER SYSTEM 3/4.7.3 i COMPONENT COOLING WATER SUBSYS'IliM - OPERATING SURVEILLANCE REQUIREMENTS 4.7.3.I' Three component cooling water subsystems shall be demonstrated OPERABLE:
At least once per 31 days by verifying that each valve (manual, power operated or a.
. automatic) servicing in the flow path of the residual heat removal system that is not '
locked, sealed. or otherwise secured in position, is in its correct position.
b.
Each component cooling water pump shall be tested in accordance with Specitication 4.0.5.
t i
i i
a t
h i
lc j-NORTH ANNA UNIT 2 3/4 714a Amendment No.44, 175 I
PLANT SYSTEMS 3/4.7.3 COMPONENT COOLING WATER SYSTEM 3/4.7.3.2 COMPONENT COOLING WATER SUBSYSTEM - SHUTDOWN LIMITING CONDITION FOR OPERATION 3.7.3.2 Two component cooling water subsystems (shared with Unit 1) shall be OPERABLE
- with each subsystem consisting of:
a.
One OPERABLE component cooling water pump and, b.
One OPERABLE component cooling water heat exchanger.
APPLICABILITY:
Both Units in MODES 5 or 6.
ACTION:
With one required component cooling water subsystem inoperable, immediately suspend all operations involving an increase in the reactor decay heat load or a reduction in boron concentration of the Reactor Coolant System.
SURVEILI. ANCE REQUIREMENTS 4.7.3.2 At least two component cooling water subsystems shall be demonstrated OPERABLE:
At least once per 31 days by verifying that each valve (manual, power operated or a.
automatic) servicing the flow path of the residual heat removal system that is not locked, sealed, or otherwise secured in position, is in its conect position.
b.
Each component cooling water pump shall be tested in accordance with l
Specification 4.0.5.
e A
I For the purposes of this Technical Specification each subsystem is considered OPERABLE if it is operating or if it can be placed in service from a standby condition by manually unisolating a standby heat exchanger and/or manually starting a standby pump.
NORTH ANNA - UNIT 2 3/4 7-14b Amendment No.175 l
PLANT SYSTEMS 3/4.7.4 SERVICE WATER SYSTEM 3/4.7.4.1 SERVICE WATER SYSTEM - OPER ATING LIMITING CONDITION FOR OPERATION 3.7.4.1 Two service water loops (shared with Unit 1) shall be OPERABLE with each loop consisting of:
Two OPERABLE service water pumps (excluding auxiliary service water pumps) a.
with their associated normal and emergency power supplies
- and l
b.
An OPERABLE flow path capable of providing cooling for OPERABLE plant components and transferring heat to the service water reservoir.*
l t
APPLICABILITY:
Either Unit in MODES 1,2,3 or 4.
ACTION:
With one service water pump inoperable, within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> throttle component a.
cooling water heat exchanger flows, in accordance with approved operating procedures, to ensure the remaining service water pumps are capable of providing adequate flow to the recirculation spray heat exchangers. The provisions of Specification 3.0.4 are not applicable once component cooling heat exchangers flows are throttled.
b.
With two service water pumps inoperable, perform ACTION 3.7.4.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and restore at ! cast one service water pump to OPERABLE status within 4
72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or place both units in 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 />.
With one service water loop inoperable, except as provided in ACTION 3.7.4.1.a.
c.
restore the inoperable loop to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or place both units in 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 />.
For the purpose of service water system upgrades associated with the supply and return piping to/from the component cooling water heat exchangers (CCHXs), one of the two service water (SW) loops is permitted to temporarily bypass the CCHXs, provided all i
other requirements in this specification are met. This condition is permitted two times i
only (once for each SW loop) for a duration of up to 49 days each. During each period of operation with only one SW loop available to/from the CCHXs, four out of four SW pumps (excluding the auxiliary SW pumps) shall remain OPERABLE. With one SW pump inoperable, work may continue provided actions are taken to either restore the pump to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or restore both SW headers to/from the CCHXs to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or place both units in 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 />.
During each period of operation with only one SW loop available to/from the CCHXs, the automatic closure feature of the SW valves servicing the CCHXs shall be defeated to ensure SW flow to the CCHXs is not interrupted. During each period of operation with only one SW loop available to/from the CCHXs, the provisions of Specification 3.0.4 are not applicable, provided two SW loops are capable of providing cooling for the other OPER ABLE plant components. Upon completion of the work associated with
]
the second 49-day period. this footnote will no longer be applicable.
NORTH ANNA - UNIT 2 3/4 7-15 Amendment No. 39,56,136, ! !3, l
175 l
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4 PLANT SYSTEMS 3/4.7.4 SERVICE WATER SYSTEM 3/4.7.4.1 SERVICE WATER SYSTEM - OPER ATING-LIMITING CONDITION FOR OPERATION d.
The allowable time that one of the two service water loops can be inoperable as specified in ACTION 3.7.4.1.c may be extended beyond 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> up to 168 hours0.00194 days <br />0.0467 hours <br />2.777778e-4 weeks <br />6.3924e-5 months <br /> as part of service water system upgrades
- provided 3 out of 4 service water pumps (the third pump does not require auto start capability) and 2 out of 2 auxiliary service water pumps have been OPERABLE since initial entry into the action statement and remain OPERABLE during the extended action statement 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 COLDsSHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
With two service water loops inoperable for reasons other than described in' e.
ACTION 3.7.4.1.b, place both units in HOT SHUTDOWN within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and within the following hour, initiate actions to place both units in COLD SHUTDOWN and continue actions until both units are in COLD SHUTDOWN.
SURVEILLANCE REQUIREMENTS 4.7.4.1 At least two service water loops shall be demonstrated OPERABLE:
At least once per 31 days by verifying that each valve (manual, power operated or a.
automatic) servicing safety related equipment that is not locked, sealed, or 4
otherwise secured in position, is in its correct position.
b.
At least once per 6 months by measurement of the movement of the pumphouse and wing walls.
)
4 c.
At least once per 18 months during shutdown, by:
1.
Verifying that each automatic valve servicing safety related equipment actuates to its correct position on an actual or simulated safety injection j
signal.
2.
Verifying that each automatic service water valve actuates to its correct position on an actual or simulated containment high-high signal.
d.
Each service water pump will be tested in accordance with Specification 4.0.5.
Isolation of one service water loop for up to 168 hours0.00194 days <br />0.0467 hours <br />2.777778e-4 weeks <br />6.3924e-5 months <br /> is permitted only as part of service water system upgrades. System upgrades include modification and maintenance activities associated with the installation of new discharge headers and spray arrays, mechanical and chemical cleaning of service water piping and valves, pipe repair and replacement, valve repair and replacement, installation of corrosion mitigation measures and inspection of and repairs to buried piping interior coatings and pump or valve house components.
NORTH ANNA - UNIT 2-3/4 7-15a Amendment No. 4M.175 I