ML20099L580

Proposed Tech Spec Changes,Revising Sections 3.4.11 & 4.4.11 for High Point Vents Installation,Per NUREG-0737,Item II.B.1

ML20099L580
Person / Time
Site:	Davis Besse
Issue date:	11/20/1984
From:	TOLEDO EDISON CO.
To:
Shared Package
ML20099L567	List: ML20099L566 ML20099L572 ML20099L580
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.B.1, TASK-TM TAC-56714, NUDOCS 8412010182
Download: ML20099L580 (2)

Text

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i REACTOR COOLANT SYSTEM REACTOR COOLANT SYSTEM VElrTS LIMITING CONDITION FOR OPERATION 3.4.11 The following reactor coolant system vent paths shall be oper-able:

a. Reactor Coolant System Loop 1; with vent path through valves RC 4608A and RC 4608B.

b. kcactor Coolant System Loop 2; with vent path through valves RC 4610A and RC 46108.

c. Pressurizer; with vent path through' EITHER valvos RCll and RC2 (PORV) OR valves RC 239A and RC 200.

APPLICABILITY: Modes 1, 2 and 3 kCTION:

n. With one of the above vent paths inoperable; restore the inoperable vent path to OPERABLE status within 30 days,

or, be in NOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN i within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />,

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b. .With two of the above vent paths inoperable; restore at least one of the inoperable vent paths to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or 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 /> and in HOT SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

c. With three of the above vent paths inoperable; restore at least two of the inoperable vent paths to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or 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 /> and in HOT SHlTIDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

d. The provisions of specification 3.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 4.4.11 Each reactor coolant system vent path shall be demonstrated OPERABLE at least once per 18 months by:

1. Verifying all manual isolation valves in each vent path are locked in the open position, and I

i 2. Cycling each valve in the vent path through at least one complete cyclerof full travel from the control room during

l. COLD SHUTDOWN,or REFUELING, and

3. Verifying flow through the reactor coolant vent system vent paths during COLD SHlfrDOWN or REFUELING.

m 8412010182 841120 PDR ADOCK 05000346 PDR p

REACTOR COOLANT SYSTEM BASES 3/4.4.10 STRUCTURAL INTEGRITY The inspection programs for ASME Code Class 1, 2 and 3 components, except steam generator tubes, ensure that the structural integrity of these components will be maintained at an acceptable level throughout the life of the plant. To the extent applicable, the inspection program for these components is in compliance with Section XI of the ASME Boiler and Pressure Vessel Code.

The internals vent valves are provided to relieve the pressure

. generated by steaming in the core following a LOCA so that the core remains sufficiently covered. Inspection and manual actuation of the internals vent valves 1) ensure OPERABILITY, 2) ensure that the valves are not stuck open during normal operation, and 3) demonstrates that the valves are fully open at the forces equivalent to the differential pressures assumed in the safety analysis.

3/4.4.11 HICH POINT VENTS The Reactor Coolant System high point vents is installed per NUREG 0737 item II.B.1 requirements. The operability of the system ensures capability of venting steam or noncondensable gas bubbles in the reactor cooling system to restore natural circulation following a small break loss of coolant accident.

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