ML20063G530

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Proposed Tech Spec Changes Clarifying Time Period for Purging & Venting Containment Ventilation Sys
ML20063G530
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 07/22/1982
From:
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20063G526 List:
References
NUDOCS 8207290131
Download: ML20063G530 (9)
v • d • e


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ENCLOSURE 1 PROPOSED TECHNICAL SPECIFICATIONS SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 8207290131 820722 .

PDR ADOCK 05000327 P PDR

CONTAINMENT SYSTEMS CONTAINMENT VENTILATION SYSTEM LIMITING CONDITION FOR OPERATION One pair 3.6.1.9 (cre purge supply line and one purge exhaust line exhaust isulation valves in all other containment purge lines shall be closed.

Operation with purge supply or exhaust isolation valves open for either purging or venting shall be limited to less than or equal to 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> per 365' days.

The 365 day cumulative time period will begi.t every April 15.

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

ACTION: '

With a purge supply or exhaust isolation valve open in excess of the above cumulative limit, or with more than one pair of containment purge system linest open, close the isolation valve (s), in the purge line(s) within one hour 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 SHUTDOW the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. .

SURVEILLANCE REOUIREMENTS 4.6.1.9.1 The position of the containment purge supply snd exhaust isolation valves shall be determined at least once per 31 days.

4.6.1.9.2 The cumulative time that the purge supply and exhaust' isolation shall be determined at least once per valves are open over a 365 day period 7 days.

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SEQUOYAH - UNIT 2 3/4 6-15

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CONTAINMEt(T SYSTEM _SS CONTAINMENT VENTILATION SYSTEM LIMITING CONDITION FOR OPERATION t

3.6.1.9 One pair (one purge supply line and one purge exhaust line) of con-tainment purge system lines may be open; the containment purge supply and exhaust isolation valves in all other containment purge lines shall be closed, g Operation with purge supply or exhaust isolation valves ,rpen for either purgieg or venting shall be limited to less than or eoual to 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> per 365 days.

The 365 day cumulative time period will begin every April 15'.

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t APPLICABILITY: MODES 1, 2, 3, and 4. '

ACTION: ,

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With a purge supply or exhaust isolation valve open in excess of the above cumulative limit, or with more than one pair of containment purge system lines open, close the isolation valve (s) in the purge line(s) within one hour 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 j the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

., I SURVEI LLANCE- REQUIREMENTS w

4.6.1.9.1 The position of the containment purge supply and exhaust isolation valves shall be determined at least once per 31 dayse l

4.6.1.9.2 The cumulative time that the purge supply and exhaust isolation valves are open over a 365 day period ,shall be determined at least once per 7 days.

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, SEQUOYAH - UNIT 1- 3/4 6-15 i

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e ENCLOSURE 2 JUSTIFICATION FOR PROPOSED TECHNICAL SPECIFICATIONS FOR SEQUOYAH NUCLEAR PLANT l

UNITS 1 AND 2

ENCLOSURE 2 JUSTIFICATION FOR PROPOSED TECHNICAL SPECIFICATIONS

. FOR SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 The purpose of this technical specification change is to clarify how the cumulative purge time is calculated over a 365-day period. This change is a result of a telephone conference call with the NRC on April 27, 1982.

The 365-day cumulative time period will begin every April 15. Purging and venting will be limited to 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> during this 365-day period.

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O ENCLOSURE 3 TECHNICAL SPECIFICATION CHANGES FOR SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 5

  • s ENCLOSURE 3 TECHNICAL SPECIFICATION CHANGES FOR SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 As discussed with Carl Stahle on July 19, 1982, these technical specification changes will be incorporated into our technical specifications. These changes involve the ultimate heat sink (3/4.7 5) and manipulator crane (3/4.9.6). Technical specification (T/S) 3/4.7.5 will have a July 15, 1981 effective date ( Amendment 8) and T/S 3/4.9.6 will have '

an effective date of May 4, 1982 (Amendment 4).

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l REFUELING OPERATIONS 3/4.9.6 MANIPULATOR CRANE j l

l LIMITING CONDITION FOR OPERATION

.. l 3.9.6 The manipulater crane and auxiliary hoist shall be used for movement.of drive rods or fuel assemblies and shall be OPERABLE with:

a. The manipulator crane used for movement of fuel assemblies having:
1. A minimum capacity of 2750 pounds, and
2. An overload cut off limit less than or equal to 2700 pounds.
b. The auxiliary hoist used for latching and unlatching drive rods having:
1. A minimum capacity of 610 pounds, and
2. A load indicator which shall be used to prevent lifting loads in excess of 600 pounds.

APPLICABILITY: During movement of drive rods or fuel assemblies within the reactor pressure vessel. _

ACTION:

With the requirements for crane and/or hoist OPERABILITY not satisfied, suspend use of any inoperable manipulator crane and/or auxiliary hoist from oper.ations involving the movement of drive rods and fuel assemblies within the reactor pressure vessel. The provisions of Specification 3.0.3 are not applicable.

SURVEILLANCE REQUIREMENTS 4.9.6.1 Each manipulator crane used for movement of fuel assemblies within the reactor pressure vessel shall be demonstrated OPERABLE within 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> prior to the start of such operations by performing a load test of at least 2750 pounds and demonstrating an automatic electrical load cut off when the crane load exceeds 2700 pounds.

4.9.6.2 Each auxiliary hoist and associated load indicator used for movement of drive rods within the reactor pressure vessel shall be demonstrated OPERABLE within 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> prior to.the start of such operations by performing a. load test of at least 610 pounds.

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SEQUOYAH - UNIT 2 3/4 9-7

PLANT SYSTEMS 3/4.7.5 ULTIMATE HEAT SINK LIMITING CONDITION FOR OPERATION 3.7.5 The ultimate heat sink shall be OPERABLE with the average temperature of water at the ERCW system suction of less than or equal to 83 F.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

With the average temperature of the water at the ERCW system suction greater than 83*F be in at least HOT STANDBY within 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 />.

S_URVEILLANCE REQUIRMENTS 4.7.5 The ultimate heat sink shall be determined OPERABLE at least once per rs 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying the averace temperature to be within its limits. (

, SEQUOYAH - UNIT 1 3/4 7-14

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