ML20057C728

Proposed Tech Specs Removing Surveillance Requirement 4.4.1.2.2 Due to Problems Encountered W/Jet Pump Differential Pressure Instrumentation Measurements

ML20057C728
Person / Time
Site:	Grand Gulf
Issue date:	09/23/1993
From:	ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20057C723	List: ML20057C722 ML20057C728
References
GNRO-93-00118, GNRO-93-118, NUDOCS 9309290308
Download: ML20057C728 (4)

Text

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- - Attachment 3 to GNRO-93/00118 Page 1 of 2 i

PROPOSED CHANGE TO THE OPERATING LICENSE SURVElLLANCE REQUIREMENT 4.4.1.2.2, JET PUMP AP MEASUREMENT i

BELOW 25% POWER (GGNS PCOL 93/12) i i

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a REACTOR COOLANT SYSTEM Attachment 3 to GNRO-93/00118 Page 2 of 2 JET PUMP 5 LIMITING CONDITION FOR OPERATION 3.4.1.2 All jet pumps shall be OPERABLE.

APPLICABILITY: OPERATIONAL CONDITIONS 1 and 2.

ACTION:

I With one or more jet pumps inoperable, be in at least HOT SHUTDOWN within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. i I

l SURVEILLANCE REQUIREMENTS 4.4.1.2.1 Each of the above required jet pumps in an operating loop shall be demonstrated OPERABLE with THERMAL POWER in excess of 25% of RATED THERMAL POWER and at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by detemining recirculation loop flow, total core flow and diffuser-to-lower plenum differential pressure for each

! jet pump and verifying that no two of the following conditions occur:

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a. The indicated recirculation loop flow differs by more than 10% from the established flow control valve position-loop flow characteristics.

b. The indicated total core flow differs by more than 10% from the established total core flow value derived from recirculation loop flow measurements.

c. The indicated diffuser-to-lower plenum differential pressure of any individual jet pump differs from established piatterns by more than >

10%. =- ~ - - .

4.4.1.2.2 The provisions of Specification 4.0.4 are not applicable provided the diffuser-to-lower plenum differential pressures of the individual jet pumps are determined to be within 50%* of the loop average within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> after entering OPERATIONAL CONDITION 2 and at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> thereafter.

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Any required changes to the value shall be submitted to the Commission within 90 days of test completion.

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GRAND GULF-UNIT 1 3/4 4-2 Amendment No. Mr, _

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,'. Attachment 4 to GNRO-93/00118 I Page 1 of 2 l

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PROPOSED TECHNICAL SPECIFICATIONS PAGES l

SURVEILLANCE REQUIREMENT 4.4.1.2.2, JET PUMP AP MEASUREMENT BELOW 25% POWER  !

1 (Information only)

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r f 8 Attachment 4 to GNRO-93/00118

. Page 2 of 2 REACTOR COOLANT SYSTEM JET PUMPS LIMITING CONDITION FOR OPERATION ,

i 3.4.1.2 All jet pumps shall be OPERABLE.

APPLICABILITY: OPERATIONAL CONDITIONS 1 and 2.  ;

ACTION:  ;

With one or more jet pumps inoperable, be in at least HOT SHUTDOWN within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

SURVEILLANCE REQUIREMENTS r

4.4.1.2.1 Each of the above required jet pumps in an operating loop shall be ,

demonstrated OPERABLE with THERMAL POWER in excess of 25% of RATED THERMAL POWER and at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by determining recirculation loop flow, total core flow and diffuser-to-lower plenum differential pressure for each jet pump and verifying that no two of the following conditions occur:

a. The indicated recirculation loop flow differs by more than 10% from the established flow control valve position-loop flow characteristics.  ;

b. The indicated total core flow differs by more than 10% from the established total core flow value derived from recirculation loop flow measurements.

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c. The indicated diffuser-to-lower plenum differential pressure of any individual jet pump differs from established patterns by more than 10%.

The provisions of Specification 4.0.4 are not applicable provided the above l surveillance is performed within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after reactor power exceeds 25% or 4 l hours after the associated recirculation loop is in operation.

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t GRAND GULF-UNIT 1 3/4 4-2 Amendment No. 16, i