ML17305A728

Proposed Tech Specs to Lower Min Shutdown Cooling Flow Specs for Mode 5 Loops Not Filled & Require Closing Valve to Isolate Major Source of Nonborated Makeup Water from RCS

ML17305A728
Person / Time
Site:	Palo Verde
Issue date:	04/30/1990
From:	ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
Shared Package
ML17305A727	List: ML17305A726 ML17305A728
References
NUDOCS 9005040099
Download: ML17305A728 (1)

Text

REACTOR COOLANT SYSTEM f

COLD SHUTDOWN - LOOPS NOT 'FILLED LIMITING CONDITION FOR OPERATION 3.4.1.4.2 Two shutdown cooling loops shall be OPERABLE~ and at least one shutdown cooling loop shall be in operation" ~

APPLICABILITY: MODE 5 with reactor loops not filled.

ACTION:

a. With less than the above required loops OPERABLE, immediately initiate corrective action to return the required loops to OPERABLE status or to restore the required level as soon as possible.

b. With no shutdown cooling loop in operation, suspend all operations involving a reduction in boron concentration of the Reactor Coolant System and immediately initiate corrective action to return the required shutdown cooling loop to operation.

SURVEILLANCE RE UIREMENTS 4.4.1.4.2 At least one shutdown cooling loop shall be determined to be in operation and circulating reactor coolant at a flow rate of greater than or equal to 4000 gpm-" at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

~One shutdown cooling loop may be inoperable for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for surveillance testing provided the other shutdown cooling loop is OPERABLE and in operation.

• The shutdown cooling pump may be deenergized for up to 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> provided (1) no operations are permitted that would cause dilution of the Reactor Coolant System boron concentration, and (2) core outlet temperature is maintained at least 10 F below saturation temperature.

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PALO VERDE UNIT 1 3/4 4-6 9005040099 900430 PDR ADOCK 0500052S P PDC