ML20072U790

Proposed Tech Spec 3.10.2, Special Test Exceptions - Rod Pattern Control Sys

ML20072U790
Person / Time
Site:	River Bend
Issue date:	09/08/1994
From:	ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20072U784	List: ML20072U786 ML20072U790 RBG-40863, Forwards Application for Amend to License NPF-47,changing TS 3.10.2, Special Test Exceptions - Rod Pattern Control Sys
References
NUDOCS 9409190027
Download: ML20072U790 (2)

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SPECIAL TEST EXCEPTIONS '

a I . 3/4.10.2 R00 PATTERN CONTROL SYSTEM i

i LIMITING CONDITION FOR OPERATION

<f[0t udbhaud N47let OW) sto7'h i 3.10.2 The sequence constraints imposed on control rod groups by the rod j pattern control system (RPCS) per Specification 3.1.4.2 may be suspended, by j means of the individual rod position bypass switches, for the following tests:

a. Shutdown margin demonstrations, Specification 4.1.1.

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b. Control rod scram, Specification 4.1.3.2.

i c. Control rod friction measurements.

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d. Startup Test Program with the THERMAL POWER less than 20% of RATED

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p o.a sPOWFR e su OPERATIONAL

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j With the requirements of the above specification not satisfied, verify that i the RPCS is OPERA 8LE per Specification 3.1.4.2. -

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SURVEILLANCE REQUIREMENTS i I j 4.10.2 When the sequence constraints imposed on control rod groups by the l

RPCS are bypassed, verify

a. Within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> prior to bypassing any sequence constraint and at j least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> while any secuence constraint is bvoassed, j that movement of the control rods Cs, '-^^^"""'t 'M 007

7 ~- fro is limited to the established control roc j sequence for the specified test, and l b. Conformance with this specification and test procedures by a seccnd i licensed operator or other technically qualified member of the unit i technical staff.

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j RIVER BEND - UNIT 1 3/4 10-2 i 9409190027 940908 PDR ADDCK 05000458 pno .'

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.- 3/4.10 SPECIAL TEST EXCEPTIONS BASES 3/4.10.1 PRIMARY CONTAINMENT INTEGRITY /ORYWELL INTEGRITY The requirements for PRIMARY CONTAINMENT INTEGRITY and DRYWELL INTEGRITY '

are not applicable during the period when open vessel tests are being performed during the low power PHYSICS TESTS.

3/4.10.2 ROD PATTERN CONTROL SYSTEM g ,M, /,W/u(puy_

In order to perform the tests required in the technical specifications it is necessary to bypass the sequence restraints on control rod movement. The additional surveillance requirements ensure that the specifications on heat generation rates and shutdown margin requirements are not exceeded during the period when these tests are being performed and that individual rod worths do not exceed the values assumed in the safety analysis.

3/4.10.3 SHUT 00WN MARGIN DEMONSTRATIONS Performance of shutdown margin demonstrations with the vessel head removed requires additional restrictions in order to ensure that criticality is properly monitored and controlled. These additional restrictions are specified in this LCO.

3/4.10.4 RECIRCULATION LOOPS This special test except'i on permits reactor criticality under no flow conditions and is required to. permit performance of certain startup- and PHYSICS TESTS while at low THERMAL POWER levels.

3/4.10.5 TRAINING STARTUPS This special test exception permits training startups to be performed, with the reactor vessel depressurized at low THERMAL POWER and low temperature, while controlling RCS temperature with one RHR subsystem aligned in the shut-down cooling mode. This arrangement minimizes contaminated water discharge.to the radioactive waste disposal system.

RIVER BEND - UNIT 1 B 3/4 10-1

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