ML20003B688

Proposed Tech Specs 3.4 & 4.0 Re Clarification of Term Operable as Applied to Single Failure Criterion for Safety Sys

ML20003B688
Person / Time
Site:	Hatch
Issue date:	02/05/1981
From:	GEORGIA POWER CO.
To:
Shared Package
ML20003B687	List: ML20003B686 ML20003B688
References
TAC-13278, NUDOCS 8102250199
Download: ML20003B688 (2)

Text

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v 3/4 LIMITItC CONDITIONS FOR OPERATION AND SURVEILLANCE REQUIREMENTS 3/4.0 APPLICABILITY LIMITING CONDITION FOR OPERATION 3.0.1 Limiting Conditions for Operation and ACTION requirements shall be applicable during the OPERATIONAL CONDITIONS or other states specified for each specification.

3.0.2 Adherence to the requirements of the Limiting Condition for Operation and associated ACTION within the specified time interval shall constitute compliance with the specification.

In the event the Limiting Condition for Operation is restored prior to expiration of the specified time interval, completion of the ACTION statement is not required.

3.0.3 In the event a Limiting Condition for Operation and/or associated ACTION recoirements cannot be satisfied because of circumstances in excess of those addressed in the specification, the facility shall be placed in at least HOT SHUfDOWN 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 /> unless corrective measures are completed that permit operation under the permissible ACTION statements for the specified time interval as measured from initial discovery or until the reactor is placed in an OPERATIONAL CONDITION in which the spccification is not applicable.

Exceptions to these requirements shall be stated in the individual specifications.

3.0.4 Entry into an OPERATIONAL CONDITION or other specified applicability state shall not be made unless the conditions of the Limiting Condition for Operation are met without reliance on provisions contained in the ACTION statements unless otherwise excepted.

This provision shall not prevent passage thru OPERATIONAL CONDITIONS required to comply with ACTION requirements.

3.0.5 When a system, subsystem, train, component, or device is determined to be inoperable solely because its emergency power source is inoperable, or solely because its normal power source is inoperable, it may be considered OPERABLE for the purpose of satisfying the requirements of its applicable Limiting Condition for Operation, provided:

(1) its corresponding normal or emergency power source is OPERABLE: AND (2) all of its redundant system (s),

subsystem (s), train (s), component (s), and device (s) are OPERABLE, or likewise satisfy the requirements of this specification.

Unless both conditions (1) and (2) are satisfied, the unit shall be placed in at least HOT SHUTDOWN within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, and in at least 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 />.

This specification is not applicable in Conditions 4 or 5.

SURVEILLANCE REQUIREMENTS 4.0.1 Surveillance Requirements shall be applicable during the OPERATIONAL COBOITIONS or other states specified for individual Limiting Conditions for Operation unless otherwise stated in the individual Surveillance Requirements.

4.0.2 Each Surveillance Requirement shall be performed witnin the specified time interval with:

a.

A maximum allowable extension not to exceed 25% of the surveillance

interval, 3/4 0-1 02250l%

3/4.0 APPLICABILITY BASES j

The specifications of this section provide the general requirements applicable to each of the Limiting Conditions fo.- Operation and Surveillance Requirements within Section 3/4.

3.0.1 This specification states the applicability of each specification in terms of defined OPERATIONAL CONDITION and is provided to delineate specifically when each specification is applicable.

3.0.2 This specification defines those conditions necessary to constitute compliance with the terms of an individual Limiting Condition for Operation and associated ACTION requirement.

3.0.3 This specification delineates the ACTION to be taken for circumstances not directly provided for in the ACTION statements and whose occurrence would violate the intent of the specification.

For example, Specification 3.5.1 calls for the HPCI to be OPERABLE and specifies explicit requirements if it become inoperable.

Under the terms of Specification 3.0.3 if the required additional systems are not OPERABLE, the facility is to be placed in HOT SHUTDOWN within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and be 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 />.

The unit shall be brought to HOT SHUTDOWN and COLD SHUTDOWN within the required times by promptly initiating and carrying out an orderly shutdown.

It is intended that this guidance also apply whenever an ACTION statement requires a unit be in (at least) STARTUP within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or in (at least) HOT SHUTDOWN within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

3.0.4 This specification provides that entry into an OoERABLE CONDITION must be made with (a) the full complement of required systems, equipment or components OPERABLE and (b) all other parameters as specified in the Limiting Conditions for Operation being met without regard for allowable deviations and out of service provisions contained in the ACTION statements.

3.0.5 When a system, subsystem, train, component, or device loses either its normal electrical supply or its emergency electrical supply, the equipment is still capable of performing its intended function.in the required manner.

The safety analyses are performed assuming the loss of function of a critical piece of equipment; thus, with a source of electrical power ueavailable, a single failure is still required to reach the conditions analyzed in the

'FSAR.

It is recognized, however, that operation with one source of electrical power unavailable means the system, subsystem, train, component, or device is in a' degraded mode.

The ACTION statement for the loss of an electrical source-4 is designed to allow operation to continue for a reass able time while repairs are affected and the lost electrical source returned to service.

Therefore, there is - no need for all equipment. supplied by the electrical source to. be placed in ACTION statements.

The intent.of this provision is to insure that facility operation is' not initiated with either required equipment or systems inoperable or other limits being exceeded.

Exceptions to this -provision - have been provided for a limited number of specifications when ~ startup with' inoperable equipment would not affect plant safety.

These exceptions are stated in -the ACTION statements of the appropriate specifications.

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