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Proposed Tech Specs Permitting More Negative Moderator Temp Coefficient (Mtc) & Less Restrictive Shutdown Margin Requirement,Accommodating More Negative Mtc & Allowing Negative Finding Under 10CFR50.59 for Cycle 6
	ML20080A534
Person / Time
Site:	Calvert Cliffs
Issue date:	01/27/1984
From:	; BALTIMORE GAS & ELECTRIC CO.
To:	;
Shared Package
ML20080A519	List: ML20080A518; ML20080A534;
References
	NUDOCS 8402060106
	Download: ML20080A534 (3)
	v • d • e

.

REACTIVITY CONTROL SYSTEMS f

MODERATOR TEMPERATURE COEFFICIENT LIMITING CONDITION FOR OPERATION 3.1.1.4 The mode'rator temperature coefficient (MTC) shall be:

Less positive than 0.5 x 10'4 ak/k/*F whenever THERMAL a.

POWER is 1 70% of RATED THERMAL POWER, b.

Less positive than 0.2 x 10'4 ak/k/*F whenever THERMAL POWER is > 70% of RMAL POWER, and O'4 ak/k/*F at RATED THERMAL c.

Less negative th x

. POWER.

APPLICABILITY:

MODES 1 and 2*#

ACTION:

With the moderator temperature coefficient outside any one of the above limits, be in at least HOT STANDBY within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

O SURVEILLANCE REOUIREMENTS s

4.1.1.4.1 The MTC shall be determined to be within its limits by confirmatory measurements., MTC measured values shall be extrapolated and/or compensated to permit direct ecmparison with the above limits.

Twitn K,ff _>_ 1.0.

See Special Test Exception 3.10.2.

e402060106 840127 PDR ADOCK 05000318 k.

CALVERT CLIFFS - UNIT 2 3/4 1-5 Amendment No. 72, 3I 1

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3/4.1 REACTIVITY CONTROL SYSTEMS f

3/4.1.1 BORATION CONTROL SHUTOOWN MARGIN - T,yc > 2004 LIMITING CONDITION FOR OPERATION

(

The SHUTDOWN MARGIN shall be > %.s 3.1.1.1

ak/k.

APPLICABILITY:

MODES 1, 2**, 3 and 4.

ACTION:

With the SHUTDOWN MARGI

ak/k, immediately initiate and continue boration at > 40 gpm of boric acid solution or equivalent until the required SHUTOOWN MARGIN is restored.

SURVEILLANCE REOUIREMENTS 4.

4.1.1.1.1 The SHUTDOWN MARGIN shall be determined to b Ak/k:

a.

Within one hour after detection of an inoperable (s) and at O-least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months thereafter while the CEA(s) is inoperable.

If the inoperable CEA is immovable or untrippable, the above required SHUTDOWN MARGIN shall be increased by an amount at, least equal to the withdrawn worth of the immovable or untrippable CEA(s).

b.

When in MODES 1 or 2, at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months by verifying that CEA group withdrawal is within the Transient Insertion Limits of Specification 3.1.3.6.

N c.

When in MODE 2

, within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months prior to achieving, reactor l

criticality by verifying that the predicted critical CEA l

position is within the limits of Specification 3.1.3.6.

d.

Prior to initial operation above 5% RATED THERMAL POWER after each fuel loading, by consideration of the factors of e below, with the CEA groups at the Transient Insertion Limits of Specification 3.1.3.6.,

Adherence to Technical Specification 3.1.3.6 as specified in Surveillance Requirements 4.1.1.1.1 assures that there is sufficient available shut-down rEargin to' match the shutdown margin requirements of the safety.

f analyses.

- See Special Test Exception 3.10.1.

With K,ff y_1.0.

I

1. With K,ff < 1.0.

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CALVERT CLIFFS - UNIT 2 3/4 1-1 Amendment No.

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.M..:..:.c. i.N A su'ficien SHUTOCWN MARGIN ansures : hat 1) tne reactor can be = ace suberitical from all operating c:nditions, 2) the reactivity ransients

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3.

5HUTCCWN MARGIN requirements vary thr:ughcut ::re life as a func:icn

,uel dec,.e-ion, Rc.a.:oren concentra-icn anc rc.5 i,y,.

.ne tnt =u avai.:ie gggs

.g c:ndi-icns.I :beginning of life i.Gri!

5HUTCOWN. MARGIN for no lead

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.ce -he steam line r; ur, ever.d I. wre event ec:urs ats ndi:icas, conditions.

h v

nditions.

1 4 is requ'.ec -

..n ei the a minimu= 5HUTCOWN MARGIN of less :n:

reactivity transient, and end o f cycl e c:nci-icns recui. e jadd c? '.

Accordingly l} ne SHUTDCUN MARGIN requirement is based u:en nis iini..,

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he ll::nsistant di:n.75AR saft:y analysis assum::icns.

!! reactivi y ransients resul-ing from any ;cstula:ac ac:ici. 55 Tr*.7.inimai and a 3

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W i t.7 -he pressuri:er j ' level l ess : nan 50 incnes, the scurces of ncn.ccra ed.a ar 1. e restric,ed ::

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ML20080A534

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