ML17332A722

Proposed Tech Specs Re Allowance of Limited Purge Operation in Modes 1,2,3 & 4 for Pressure Control,Alara & Respirable Air Quality Consideration for Licenses DPR-58 & DPR-74

ML17332A722
Person / Time
Site:	Cook
Issue date:	03/31/1995
From:	INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML17332A721	List: ML17332A720 ML17332A722
References
NUDOCS 9504060201
Download: ML17332A722 (14)

Text

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<+~PI<<8<c. h'I< guA<zrp'ods(~ArzWs z~~</~ y g~ f~ guet'vlcc,w&d T~ri LIMITING CONDITION FOR OPERATION A~8 AAiaznd+UM'cTiv'>>I~.

3.6o1.7 whe more than one purge supply path and one purge exhaust path shall be open at a time APPLICABILITY: MODES 1, 2, 3, and 4o ACTION:

&o With one containment purge supply and/or one exhaust isolation valve inoperable, isolate the affected penetration by use of at least one automatic valve secured in the closed position, .

and, within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, either:

Restore the 'inoperable valve to OPERABLE status, or,

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2) Deactivate the automatic valve secured in the closed position.

b. Operation may then continue until performance of the next required valve test provided that the automat'c valve secured in the closed position is verified to be deactivated in the closed position at least once per 31 days.

c. OtherT<se, be in at least HOT STA%)BY within the next 6 hours and in COLD SiHFZEOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

d. The provisions Pof Specification 3.0,4 are not appl'cable.

SURVEILLAfCE REQUIRE%'AATS 4.6.1.7.1 The surveillance requirements of Technical Specification 3/4.6.3.1 apply.

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3.6.1.7 No more than one purge supply path and one purge exhaust path shall be open at a time.

~CTI ON:

a. With one containment purge supply and/or one exhaust isolation valve inoperable, isolate the affected penetration by use of at least one automatic valve secured in the closed position, and, within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, either:

1) Restore the inoperable valve to OPERABLE status, or,

2) Deactivate the automatic valve secured in the closed position.

b. Operation may then continue until performance of the next required valve test provided that the automatic valve secured in the closed position is verified to be deactivated in the closed position at least once per 31 days.

c. Otherwise, be in at least HOT STANDBY within the next 6 hours 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 />.

d. The provisions of Specification 3.0.4 are not applicable.

SURV~ LANCE RE U REMENTS 4.6.1.7.1 The surveillance requirements of Technical Specification 3/4.6.3.1 apply.

COOK NUCLEAR PLANT - UNIT 2 3/4 6-9a AMENDMENT NO. ~

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ATTACHMENT 3 TO AEP:NRC:1185 PROPOSED REVISED TECHNICAL SPECIFICATION PAGES

3/4 LIMITINGCONDITIONS FOR OPERATION AND SURVEILI.ANCE REQUIREMENTS 3/4.6 CONTAINMENTSYSTEMS CONTAINMENT VENTILATIONSYSTEM LIMITINGCONDITION FOR OPERATION 3.6.1.7 The containment purge supply and exhaust system shall be closed except when operation of the containment purge system is required for pressure control, ALARA, and respirable air quality considerations for personnel entry, and for surveillance testing and maintenance activities. No more than one purge supply path and one purge exhaust path shall be open at a time.

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

ACTION:

With one containment purge supply and/or one exhaust isolation valve inoperable, isolate the affected penetration by use of at least one automatic valve secured in the closed position, and, within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, either:

1) Restore the inoperable valve to OPERABLE status, or,

2) Deactivate the automatic valve secured in the closed position.

b. Operation may then continue until performance of the next required valve test provided that the automatic valve secured in the closed position is verified to be deactivated in the closed position at least once per 31 days.

Otherwise, 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 />.

d. The provisions of Specification 3.0.4 are not applicable.

SURVEILLANCE RE UIREMENTS 4.6.1.7.1 The surveillance requirements of Technical Specification 3/4.6.3.1 apply.

COOK NUCLEAR PLANT-UNIT 1 Page 3/4 6-9a

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3/4 BASES 3/4.6 CONTAINMENTSYSTEMS 3/4.6.1.7 CONTAINMENT PURGE AND EXHAUST ISOLATION VALVES This specification ensures that the containment purge supply and exhaust isolation valves are closed for the majority of the time during normal operation. It allows for containment PURGING to support pressure control, ALARA, and respirable air quality considerations for personnel entry, and for surveillance testing and maintenance activities up to 240 hours0.00278 days <br />0.0667 hours <br />3.968254e-4 weeks <br />9.132e-5 months <br /> each year for each unit. The containtnent purge system is designed in accordance with the requirements of NRC Branch Technical Position CSB 64, Rev. 1. This includes, but is not limited to, an analysis of the impact of PURGING on ECCS performance, an evaluation of the radiological consequences of a design basis accident while PURGING, and limiting PURGE operation to using no more than one supply path and one exhaust path at a time. The purge isolation valves have been demonstrated capable of closing against the dynamic forces associated with a loss-of-coolant accident and are assured of receiving a Containment Ventilation Isolation signal.

Therefore, the SITE BOUNDARY dose guidelines of 10 CFR 100 would not be exceeded in the event of an accident during containment PURGING operations. The use of the pressure relief (vent) line is allowed for containment pressure control.

COOK NUCLEAR PLANT-UNIT 1 Page B 3/4 6-2a <WIENDliIENT66

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3/4 3/4.6 t

LIMITINGCONDITIONS FOR OPERATION AND SURVEILLANCE REQUIREMENTS CONTAINMENTSYSTEMS t

CONTAINMENT VENTILATIONSYSTEM LIMITINGCONDITION FOR OPERATION 3.6.1.7 The containment purge supply and exhaust system shall be closed except when operation of the containment purge system is required for pressure control, ALARA, and respirable air quality considerations for personnel entry, and for surveillance testing and maintenance activities. No more than one purge supply path and one purge exhaust path shall be open at a time.

APPLICABILITY: MODES 1,2,3, and4.

ACTION:

a. With one containment purge supply and/or one exhaust isolation valve inoperable, isolate the affected penetration by use of at least one automatic valve secured in the closed position, and, within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, either:

1) Restore the inoperable valve to OPERABLE status, or,

2) Deactivate the automatic valve secured in the closed position.

b. Operation may then continue until performance of the next required valve test provided that the automatic valve secured in the closed position is verified to be deactivated in the closed position at least once per 31 days.

c. Otherwise, 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 />.

d. The provisions of Specification 3.0.4 are not applicable.

SURVEILLANCE RE UIREMENTS 4.6.1.7.1 The surveillance requirements of Technical Specification 3/4.6.3.1 apply.

COOK NUCLEAR PLANT-UNIT2 Page 3/4 6-9a

3/4 BASES 3/4.6 CONTAINMENTSYSTEMS 3/4.6.1.7 CONTAINMENT PURGE AND EXHAUST ISOLATION VALVES This specification ensures that the containment purge supply and exhaust isolation valves are closed for the majority of the time during normal operation. It allows for containment PURGING to support pressure control, ALARA, and respirable air quality considerations for personnel entry, and for surveillance testing and maintenance activities up to 240 hours0.00278 days <br />0.0667 hours <br />3.968254e-4 weeks <br />9.132e-5 months <br /> each year for each unit. The containment purge system is designed in accordance with the requirements of NRC Branch Technical Position CSB 64, Rev. 1. This includes, but is not limited to, an analysis of the impact of PURGING on ECCS performance, an evaluation of the radiological consequences of a design basis accident while PURGING, and limiting PURGE operation to using no more than one supply path and one exhaust path at a time. The purge isolation valves have been demonstrated capable of closing against the dynamic forces associated with a loss-of-coolant accident and are assured of receiving a Containment Ventilation Isolation signal.

Therefore, the SITE BOUNDARY dose guidelines of 10 CFR 100 would not be exceeded in the event of an accident during containment PURGING operations. The use of the pressure relief (vent) line is allowed for containment pressure control.

COOK iiUCLEAR PLANT-UNIT2 Page B 3/4 6-2a AivtEiIDiMENT47.