ML20073P936

Proposed Tech Specs 3.1.3.4 to Increase Maximum Allowed Time from 2.2 to 2.7 Seconds for Control Rod Drop Time

ML20073P936
Person / Time
Site:	Wolf Creek
Issue date:	05/14/1991
From:	WOLF CREEK NUCLEAR OPERATING CORP.
To:
Shared Package
ML20073P935	List: ML20073P933 ML20073P936
References
NUDOCS 9105240193
Download: ML20073P936 (2)

Text

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Attachment IV to ET 91-0074 Page 1 of 2 1

ATTACIMENT IV PROPOSED TECilNICAL SPECIFICATION CIIANGE I

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9105240193 93o514 PDR ADOCK 05000482 P PDR l

Attachment IV to ET 91-0074 Page 2 of 2 i

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REACilVITY CONTROL SYSTEMS ROD OROP TIME LlHITING CONDITION FOR OPERATION _____

3.1.3.4 The individual full-length shutdown and control rod drop time from )

l i the physical fully withdrawn position shall be less than or equal to-e-2 seconds from beginning of decay of stationary gripper coil voltage to dashpot entry with:

2.7

a. T,yg greater than or equal to 551'f, and

b. All reactor coolant pumps operating.

APPLICABILITY: H0 DES I and 2.

ACTION:

a. With the rod drop time of any full-length rod determined to exceed the above limit, restore the red drop time to within the above limit prior to proceeding to MODE 1 cr 2.

b. With the red drop times within limits but determined with three reactor coolant pumps operating, operation may proceed provided THERMAL POWER is restricted to less than or equal to 66% of RATED THERKAL F0WER.

SURVEILLANCE REOUIREMENTS 4.1.3.4 The rod drop time of full-length rods shall be demonstrated through measurement prior to reactor criticality:

a. For all rods following each removal of the reactor vessel head,

b. for specifically affected individual rods following any maintenance on or modification to the Control Rod Drive System ' hich could I affect the drop time of.those specific rods, and

c. At least once per 18 months.

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