ML20058E774

Proposed Tech Specs Revising Section 3/4.2.4, Quandrant Power Tilt Ratio, to Permit Determination of Quadrant Power Tilt Ratio by Full Incore Flux Map

ML20058E774
Person / Time
Site:	Diablo Canyon
Issue date:	10/18/1990
From:	PACIFIC GAS & ELECTRIC CO.
To:
Shared Package
ML16341F853	List: ML16341F852 ML16341F854 ML20058E774
References
NUDOCS 9011070322
Download: ML20058E774 (2)

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i Attachment B f

l MARKED-UP TECHNICAL SPECIFICATIONS

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Remove Page Insert Pace 3/4 2-20 3/4 2-20 I

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3318S/0085K 9o110703,T 901018

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PDR ADOCK 05000275 p

PDR

o POWER DISTRIBUTION LIM 115 SURVEILLANCE REQUIREMENTS 4.2.4.1 The QUADRANT POWER TILT RATIO shall be determined to be within the limit above 50% of RATED THERKAL POWER by:

Calculating the ratio at least once per 7 days when the alarm is a.

OPERABLE, and b.

F ilculating the ratio at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> during steady-state

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operation when the alarm is inoperable, r

4 ?.4.2 The QUADRANT POWER TILT RATIO shall be determined to be within the limit when above 75% of RATFD THERMAL POWER with one Power Range channel in-operable by using the movable incore detectors to confirm that the normalized symmetric power distribution, obtained from the 4 pairs of symmetric thimble locations, is consistent with the indicated QUADRANT POWER TILT RATIO at least once per 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.

F cr km s /,,Il inc og.$/u a map fw fye s ifts. hon 3. 3. 3. 2.

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OlABLO CANY0H - UNITS 1 & 2 3/4 2-20 Amendment Nos. 37 and 36 Ef fective at end of Unit 1 Cycle 3

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