ML17053B636

Proposed Changes to Tech Specs,Sections 1.0 & 3.0 of App a

ML17053B636
Person / Time
Site:	Nine Mile Point
Issue date:	05/19/1980
From:	NIAGARA MOHAWK POWER CORP.
To:
Shared Package
ML17053B635	List: ML17053B634 ML17053B636 ML19323D416
References
NUDOCS 8005210546
Download: ML17053B636 (10)

Text

ATTACHMENT A NIAGARA MOHAWK POWER CORPORATION LICENSE NO. DPR-63 DOCKET NO. 50-220 Proposed Chan es to Technical S ecifications A pendix A Replace pages 2 and 25 with the attached revised pages. These pages have been retyped in their entirety and the marginal markings indicate specific changes to the text.

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1.2 ~Oerable A system, subsystem, train, component or device shall be operable when it is capable of performing its specified function(s) ~ Implicit in this definition shall be the assumption that all necessary attendant instrumentation, controls, normal and emergency electrical power sources, except as noted 'in 3.0, cooling or seal water, lubrication or other auxiliary equipment that are required for the system, subsystem, train, component or device to perform its function(s) are also capable of performing their related support function(s).

1.3 ~Oerarie Operating means that a system or component is performing its required functions in its required manner.

le4 Protective Instrumentation Lo ic Definitions a ~ Instrument Channel An instrument channel means an arrangement of a sensor and auxiliary equipment required to generate and transmit to a trip system a single trip signal related to the plant parameter monitored by that instrument channel.

A trip system means an arrangement of instrument channel trip signals and auxiliary equipment required to initiate action to accomplish a protective trip function. A trip system may require one or more instrument channel trip signals related to one or more plant parameters in order to initiate trip system action. Initiation of protective action may require the tripping of a single trip system or the coincident tripping of two trip systems.

le5 Sensor Check A sensor check is a qualitative determination of acceptable operability by observation of sensor behavior during operation. This determinatin shall include, where possible, comparison of the sensor'with other independent sensors measuring the same variable.

le6 Instrument Channel Test Instrument channel test means injection of a simulated signal into the channel to verify its proper response including, where applicable, alarm and/or trip initiating action.

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3.0 LIMITING CONDITIONS FOR OPERATION AND SURVEILLANCE REQUIREMENTS OPERABILITY REQUIREMENTS 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 a condition stated in the individual specification.

In the event a Limiting Condition for Operation and/or associated surveillance requirements cannot be satisfied because of circumstances in excess of those addressed in the specification, the unit shall be placed in a condition consistent with the individual specification unless corrective measures are completed that permit operation'nder the permissible surveillance requirements for the specified time interval as measured from initial discovery or until the reactor is placed in. an operational condition in which the specification is not applicable.

3.1.0 FUEL CLADDING A) GENERAL APPLICABILITY Applies to the power level regulation, control rod system, liquid poison system, emergency cooling system, and core spray system. LCO s for the minimum allowable circuits corresponding to the LS3 settings are included in the Reactor Protection System LCO (3.6.2).

B) GENERAL OBJECTIVE LIMITING CONDITIONS FOR OPERATION To define the lowest functional capability or performance level o~

the systems and associated components which will assure the integrity of the fuel cladding as a barrier against the release of radioactivity.

SURVEILLANCE REQUIREMENTS To define the tests or inspections =equired to assure the functional capability or performance level of the required systems or'omponents.

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4-ATTACHMENT B NIAGARA MOHAWK POtlER CORPORATION LICENSE NO. DPR-63 OOCKET NO. 50-220 SUPPORTING INFORMATION An NRC letter dated April 10, 1980 requested a change to the Technical Specifications regarding the use of the term operable as it applies to the single failure criterion for safety systems in power reactors. The proposed change to the Technical Specifications incorporates the requirements of that letter.

t ATTACHMENT C NIAGARA MOHAWK POWER CORPORATION LICENSE NO. DPR-63 DOCKET NO. 50-220 AMENDMENT CLASSIFICATION This change to the Technical Specifications was requested by the NRC in their letter of April 10, 1980 which did not classify the amendment or request a fee. Therefore, there is no fee accompanying this change.

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