ML20247D833

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Proposed Tech Specs Re Fxy Formula for three-loop Operation
ML20247D833
Person / Time
Site: Millstone 
Issue date: 07/20/1989
From:
NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20247D814 List:
References
NUDOCS 8907250314
Download: ML20247D833 (13)


Text

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Docket No. 50-it r B13209 .

Attachment 1 Millstone Unit No. 3 Proposed Revision to Technical Specifications l

1 1

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1 July 1989 8907260314 890720 PDR ADOCK0500g3 ,

P 1

- . _ . _ . _ _ . _ _ - _ _ _ _ _ _ _ _ _ _ . - . _ _ . _ . _ .2

P0'WER DISTRIBUTION LIMITS SURVEILLANCE REQUIREMENTS 4.2.2.2.1 The provisions of Specification 4.0.4 are not applicable.

4.2.2.2.2 F xy shall be evaluated to determine ifnF (Z) is within its limit by:

a.

Using the movable incore detectors to obtain a power distribution map at any THERMAL POWER greater than 5% of RATED THERMAL POWER,

b. Increasing the measured F component of the power distribution map by 3% to account for manufachring tolerances and further increasing the value by 5% to account for measurement uncertainties,
c. Comparing the F above to: xy computed (F x f) obtained in Specification 4.2.2.2.26,
1) The F approhriatelimits for 65% of core measured RATED THERMAL planes Y given POWER (F*0.65 RTP) for the in Specification 4.2.2.2.2e. and f., below, and
2) The relationship:

0 Fx f - F .65 x RTP [1+Mpxy (v.65-P)],

l Where F is the limit for fractional THERMAL POWER operation expresse as a function of F 55 RTP .M is the F multiplier, pxy xy and P is the fraction of RATED THERMAL POWER at which Fxy was measured.

d. Remeasuring F xy according to the following schedule:
1) When F x

is greater than the F 65 RTP 1 mit for the appropriate measured core plane but less than the F xy relationship, additional power distribution maps shall be taken and F C compared to F 65 RTP and F x either:

a) Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after exceeding by 20% of RATED THERMAL POWER or greater, the THERMAL ISfER at which F was last determined, or b) At least once per 31 Effective Full Power Days (EFPD),

whichever occurs first.

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ELANT SYST M j NAIN STEAM LINE ISOLATION VALVES l 1

. LIMITING CONDITION FOR OPERATION.

3.7.1.5 Each main steam line ilsolation valve (MSIV) shall be OPERABLE.

APPLICABIL14Y: MODES 1, 2, 3,.and 4.

80 TION:

1 MODE 1: i With one MSIV inoperable but open, POWER OPERAT15N 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: l-i 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 1 following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. l 1

SURVEILLANCE RE0VIREMENTS ,

)

4 J .1. 5 Each MSIV shall be demonstrated OPERABLE by verifying the isolation times when tested pursuant to Specification 4.0.5. The provisions of 4 Specification 4.0.1 are not applicable for entry into MODE 3. I l

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1 IAJ.d 3.3-6 (Continued 1 Jfj E NOT6110M With fuel in the fuel storage pool areas.

ACIT0N STKiEMENTS ACTIOW 26 - With less _ t.n the Minimum Channels . 0PERABLE requirement, fuel movement may continue provided the containment purge and-exhaust valves are mintained closed.. The containment radia- {;

tion monitoring channels required for containment area purge and exhaust isolation are not required to: be OPERABLE during the~ performance of Type A containment leakage rate tests.

ACTION 27 - Not used.

ACTION 28 - With less than the Minimum Channels OPERAELE requirement, fuel movement may continue for up to 30 days provided an appre l

s riate i portable. continuous monitor with the same ~ Alarm Setpvint is '

. provided in the fuel storage pool . area. Restore the inoperable monitors to 0PERABLE status within~ 30 days or suspend all' .,

operations involving fuel movement in the fuel storage pool  !

areas.

ACTION 29 - With the number of OPERABLE Channels less than the Minimum Channels OPERABLE requirement, comply with the' ACTION requirements of Specift:ation 3.4.6.1.

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