ML20073A519

Proposed Tech Specs SR 4.7.1.5.1,increasing Acceptance Criterion for Closure of Main Steam Line Isolation Valve from 5 Seconds to 10 Seconds

ML20073A519
Person / Time
Site:	Millstone
Issue date:	09/09/1994
From:	NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20073A512	List: B14972, Application for Amend to License NPF-49,increasing Acceptance Criterion of SR 4.7.1.5.1 for Closure of Main Steam Line Isolation Valve from 5 Seconds to 10 Seconds ML20073A519
References
NUDOCS 9409200301
Download: ML20073A519 (4)

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Docket 1No. 50-423- l

'B14972 l

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t Attachment 1 Millstone Nuclear Power Station, Unit No. 3 Proposed Revision to Technical Specifications Main. Steam Line Isolation Valve Closure Time- .]

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September 1994 4

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A r-wr,mry ?!, 3999 PLANT SYSTEMS MAIN STEAM'LINE ISOLATION VALVES LIMITING CONDITION FOR OPERATION 3.7;1.5 Each main steam line isolation valve (MSIV) shall be OPERABLE.

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

ACTION:

I MODE 1:

With one MSIV _ inoperable but open, POWER OPERATION may continue L provided the inoperable valve is restored to OPERABLE status within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />; otherwise be in 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 HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

MODES 2, 3, and 4:

With one MSIV inoperable, subsequent operation in MODE 2 or 3 or 4 may proceed provided' the isolation valve is maintained closed. Otherwise,- be in 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 />.

SURVEILLANCE RE0VIREMENTS 4.7.1.5.1 Each MSIV .shall be demonstrated OPERABLE by verifying full closure

- within hseconds in Modes 1, 2, and 3 when tested pursuant to Specification O10 4.u.d. The provisions of Specification 4.0.4 are not applicable for entry

'into MODE 3.

4.7.1.5.2 Each MSIV shall be demonstrated OPERABLE by verifying full closure within 120 seconds in Mode 4 when tested pursuant to Specification 4.0.5. The provisions of Specification 4.0.4 are not applicable for entry into Mode' 3.

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4 MILLSTONE . UNIT 3 3/4 7-9 Amendment No. j[J pr

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-Docket'No. 50-423 ';

B14972-l i

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Millstone Nuclear Power Station, Unit-No. 3-Proposed Revision to Technical Specifications.  :

r Main Steam Line Isolation Valve Clocure Time i Retyped Pages l t

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September 1994 I

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' PLANT SYSTEMS MAIN STEAM LINE ISOLATION VALVES LIMITING CONDITION FOR OPERATION 3.7.1.5 Each main steam line isolation valve (MSIV) shall be OPERABLE.

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

ACTION:

MODE 1:

With one MSIV inoperable but open, POWER OPERATION may continue provided the inoperable valve is restored to OPERABLE status within <

4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />; otherwise be in 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 HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

MODES 2, 3, and 4:

With one MSIV inoperable, subsequent operation in MODE 2 or 3 or 4 may proceed provided the isolation valve is maintained closed. Otherwise, be in 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 i following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.7.1.5 Each MSIV shall be demonstrated OPERABLE by verifying full closure within 10 seconds in Modes 1, 2, and 3 when tested pursuant to Specification 4.0.5. The provisions of Specification 4.0.4 are not applicable for entry into MODE 3.

4.7.1.5.2 Each MSIV shall be demonstrated OPERABLE by verifying full closure l within 120 seconds in Mode 4 when tested pursuant to Specification 4.0.5. The provisions of Specification 4.0.4 are not applicable for entry into Mode 3.

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-MILLSTONE - UNIT 3 3/4 7-9 Amendment No. ff.

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