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Revised Pages 3/4 2-11 & 2-12 for Tech Specs Re DNB Axial Flux Offset Control Limit,Issued W/License Amend 39
	ML19253C883
Person / Time
Site:	Calvert Cliffs
Issue date:	10/11/1979
From:	; Office of Nuclear Reactor Regulation
To:	;
Shared Package
ML19253C877	List: ML19253C876; ML19253C883;
References
	NUDOCS 7912120307
	Download: ML19253C883 (2)
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0.2 0.4 0.6 PERIPHERAL AXIAL SHAPE INDEX (Y )

FIGUR E 3.2 4 DNB Axial Flux Offset Control Limits C E/ERT CL!FFS - UMIT 1 3/4 2-11 kent ent 2. 27, 24, 32, L2,

ac L

7912120So7 541 312

POWER DISTRIBUTION LIMITS AZIMUTHAL POWER TILT - T, LIMITING CONDITION FOR OPERATION 3.2.4 The AZIMUT,HAL POWER TILT (T ) shall not exceed 0.030.

q APPLICABILITY: MODE 1 above 50% of RATED THERMAL POWER.*

ACTION:

a.

With the indicated AZIMUTHAL POWER TILT detennined to be > 0.030 l

but < 0.10, either correct the power tilt within two hours or determine within.the next 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months and at least once per subse-quent 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , that the TOTAL PLANAR RADIAL PEAXING FACTOR (F[y) and the TOTAL INTEGRATED RADIAL PEAKING FACTOR (F ) are within r

the limits of Specifications 3.2.2 and 3.2.3.

b.

With the indicated AZIMUTHAL POWER TILT determined to be > 0.10, operation may proceed for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months provided that the TOTAL T

INTEGRATED RADIAL PEAXING FACTOR (F ) and TOTAL PLANAR RADIAL 7

PEAK!NG FACTOR (F[y) are within the limits of Specifications 3.2.2 and 3.2.3.

Subsequent operation for the purpose of measurement and to identify the cause of the tilt is allowable provided the THERMAL POWER level is restricted to < 20% of the maximum allowable THERMAL POWER level for the existing Reactor Coolant Pump ccmbination.

SURVEILLANCE RE0JIREMENT 4.2.4.1 The provisions of Specification 4.0.4 are not acplicable.

4.2.4.2 The AZIMUTHAL PCWER TILT shall be deternined to be within the limit by:

a.

Calculating the tilt at least ence per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months , and b.

Using tne incere detectors to determine the AZIMUTHAL PCWER TILT at least once oer 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months wnen one excore enannel is inocerable and THERMAL POWER IS > 75*. of RATED THERMAL POWER.

'See Special Test Exception 3.10.2.

CALVERT CLIFFS - UNIT 1 3/4 2-12 Amendment No. 27, 32 1541

$13

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ML19253C883

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