ML20117H413

Proposed Tech Specs Page 232 Re Core Shutdown Margin

ML20117H413
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	08/30/1996
From:	VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20117H405	List: BVY-96-102, Forwards Revised Pp 232 of Proposed Change 187 Re Core Shutdown Margin ML20117H413
References
NUDOCS 9609090255
Download: ML20117H413 (1)

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3.12 LIMITING CONDITIONS FOR 4.12 SURVEILLANCE REQUIREMENTS OPERATION D. Control Rod and Control Rod D. Control Rod and Control Rod Drive Maintenance Drive Maintenance l One control rod may be 1. Prior to performing this withdrawn from the core for maintenance, core the purpose of performing shutdown margin shall be I control rod and/or control detenmined in accordance rod drive maintenance with Specification provided the following 3.3.A.1 to ensure that conditions are satisfied: the core can be made suberitical at any time

1. The reactor mode switch during the maintenance shall be locked in the with the strongest l " Refuel" position. All operable control rod refueling interlocks fully withdrawn and all shall be operable. other operable rods fully inserted.

2. Specification 3.3.A.1 i shall be met, or the 2. Alternately, if a control rod directional minimum of eight control control valvea f a rods surrounding the l minimum of eight control control rod out of l rods surrounding the service for maintenance i drive out of service for are to be fully inserted 1 maintenance shall be and have their disarmed electrically directional control and sufficient margin to valves electrically criticality disarmed, the required l demonstrated. shutdown margin shall be J

met with the strongest i

3. SRMs shall be operable control rod remaining in l in the core quadrant service during the l containing the control maintenance period fully rod on which maintenance withdrawn.

is being performed and in an adjacent quadrant.

The requirements for an SRM to be considered operable are given in Specification 3.12.B.

9609090255 960830 PDR ADOCK 05000271 P PDR Amendment No, M, 232