ML19257A673

Tech Specs 3.1.3.1 & 3.1.3.2 for Reactivity Control Sys

ML19257A673
Person / Time
Site:	Surry
Issue date:	10/29/1979
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML19257A672	List: ML19257A673
References
NUDOCS 8001070163
Download: ML19257A673 (4)

Text

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REACTIVITY CONTROL SYSTEMS 3/4.1.3 MOVABLE CONTROL ASSEMBLIES GROUP HEIGHT LIMITING CONDITION FOR OPERATION 3.'l . 3.1 All full length (shutdown and control) rods, and all part length rods which are inserted in' the core, shall be OPERABLE and positioned within 212 steps (indicated position) of.their group step counter demand position.

APPLICABILITY: MODES 1* and 2*

ACTION:

a. With one or more full length rods inoperable due to being immovable as a result of excessive friction or mechanical interference or known to be untrippable, determine that the SHUTDOWN MARGIN require-ment of Specification 3.1.1.1 is satisfied within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and be in HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

b. With more than one full or part length rod inoperable or misaligned from the group step counter demand position by more than : 12 steps (indicated position), be in HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

c. With one full or part length rod inoperable due to causes other than addressed by ACTION a, above, or misaligned from its group step counter demand height by more than 112 steps (indicated position),

POWER OPERATION may continue provided that within one hour either:

1. The rod is restored'to OPERABLE status within the above alignment requirements, or

2. The rod is declared inoperable and the SHUTDOWN MARGIN requirement of Specification 3.1.1.1 is satisfied. POWER OPERATION may then continue provided that; a) A reevaluation of.each accident analysis of Table 3.1-1 is performed within 5 days; this reevaluation shall confirm that the previously analyzed results of these accidents remain valid for the duration of operation under these conditions.

b) The SHUTDOWN MARGIN requirement of Specification 3.1.1.1 is determined at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

1692 262 "See Special Test Exceptions 3.10.2 and 3.10.3.

8 001 070 W-ST5 3/4 1-14 007 2 g,g 7 bl\Q1

REACTIVITY CONTROL SYSTEMS LIMITING CONDITION FOR' OPERATION (Continued) c) A power distribution map is obtajned from the movable incore detectors and F (Z) and F a within their limits wikhin 72 hobYs.re verified to be d) {ither the THERMAL POWER level is. reduced to less than or equal to 75% of RATED THERMAL POWER within one hour and within the next 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> the high neutron flux trip setpoint is reduced to less than or equal to 85% of RATED THERMAL POWER, or

'e ) The remainder of the rods in the group with the inoperable rod are aligned to within : 12 steps of the inoperable rod within one hour while maintaining the rod sequence and insertion limits of Figures (3.1-1) anc (3.1-2); the THERMAL POWER level shall be restrictec pursuant to Speci-fication (3.1.3.6) during subsequent operation.

SURVEILLANCj,1E0VIREMENTS 4.1.3.1.1 The position of each full and part length rod shall be determined to be within the group demand limit by verifying the individual rod positions at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> except during time intervals when the Rod Pos'. ; ion Deviation Monitor is inoperable, then verify the group positions at least once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

4.1. 3.1. 2 Each full length rod not fully inserted and each part length rod which is inserted in the core shall be determined to be OPERAELE by movement of at least 10 steps in any one direction at least once per 31 days.

1692 263 W-STS 3/4 1-15 MAR 15 D77

TABLE 3.1-1 ACCIDENT ANALYSES REOUIRING REEVALUATION IN THE EVENT OF AN INOPERABLE FULL OR PART LENGTH ROD Rod Cluster Control Assembly Insertion Characteristics Rod Cluster Control Assembly Misalignment Loss Of Reactor Coolant From Small Ruptured Pipes Or From Cracks In large Pipes Which Actuates The r ergency Core Cooling System Single Roc Cluster Control Assembly Withdrawal At Full Power Major Reactor Coolant System Pipe Ruptures (Loss Of Coolant Accident)

Major Secondary System Pipe Rupture Rupture of a Control Rod Drive Mechanism Housing (Rod Cluster Control Assembly Ejection) 1697 264 W-STS 3/4 1-16 OCT I $75

. REACT *VITY CONTROL SYSTEMS POSITION INDICATION SYSTEMS-OPERATING LIMITING CONDITION FOR OPERATION 3.1.3.2 The shutdown, control and part length control rod position indication system and the demand position indication system shall be OPERABLE and capable of determining the control rod positions within 2 12 steps.

APPLICABILITY: MODES 1 and 2.

ACTION:

a. With 'a maximum of one rod position indicator per bank inoperable either:

1. Determine the position of the non-indicating rod (s) indirectly by the movable incere detectors at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> and immediately after any motion of the non-indicating rod which exceeds 24 steps in one direction since the last determination of the rod's position, or

2. ' Reduce THERMAL POWER TO less than 50% of RATED THERMAL POWER within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

b. With a maximum of one demand position indicator per bank inoperable either:

1. Verify that all rod position indicators for the affected bank are OPERABLE and that the most withdrawn rod and the least withdrawn rod of the bank are within a maximum of 12 steps of each other at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, or

2. Reduce THERMAL POWER to less than 50% of RATED THERMAL POWER within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

SURVEILLANCE REOUIREMENTS 4.1.3.2 Each rod position indicator shall be determined to be OPERABLE by

. verifying that the demand position indication system and the rod position indication system agree within 12 steps at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> except during time intervals when the Rod Position Deviation Monitor is inoperable, then compare the demand position indication system and the rod position indica-tion system at irast once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

1692 ?65 W-STS 3/4 1-17 JUL 151973