ML20133K204

Proposed Tech Specs,Reflecting Mods to RCS Vent Sys Valve Power Supplies

ML20133K204
Person / Time
Site:	Yankee Rowe
Issue date:	10/15/1985
From:	YANKEE ATOMIC ELECTRIC CO.
To:
Shared Package
ML20133K203	List: ML20133K200 ML20133K204
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.B.1, TASK-TM NUDOCS 8510210120
Download: ML20133K204 (2)

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MAIN C00LANT SYSTEM MAIN COOLANT SYSTEM VENTS LIMITING CONDITIONS'FOR OPERATION T

3.4.11 At least one main coolant system vent path consisting of at least two valves in series powered from emergency buses shall be OPERABLE and closed j

with power removed from the valve actuator at each of the following locations:

a.

Reactor vessel head (VD-NOV-559 and 561) b.

Pressurizer steam space (PR-MOV-558 and 560)

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

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a.

With one of the above main coolant system vent valves inoperable, i

STARTUP and/or POWER OPERATION may continue provided the inoperable 4

valve is maintained closed with power removed from the valve actuator of the inoperable valve; restore the inoperable vent valve to OPERABLC status within 30 days, 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 COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

b.

With both main coolant systems vent paths inoperable; maintain the inoperable vent paths closed with power removed from the valve j

actuators of the inoperable valves, and restore at least one of the 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 4

within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, l

SURVEILLANCE REQUIREMENTS 1

4.4.11.1 At least once per 31 days verify that the supply breakers at the EMCC for each of the following valves is locked open:

a.

VD-MOV-559 and 561 l

b.

PR-MOV-558 and 560 j

4.4.11.2 Each main coolant system vent path shall be demonstrated OPERABLE at

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least once per 18 months by a.

Verifying all manual-isolation valves in each vent path are locked in the open position.

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Cycling each motor-operated valve in the vent path through at least l

one complete cycle at full travel from the Control Room during COLD 4

SHUTDOWN or REFUELING.

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c.

Verifying flow through the main coolant vent system vent paths j

during venting during COLD SHUTDOWN OR REFUELING.

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0510210120 851015 l

PDR ADOCK 000 9

P AMENDMENT NO.j (#

YANKEE-ROWE 3/4 4-39 p

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MAIN COOLANT SYSTEM BASES Whenever the results of any steza generator tubing inservice inspection fall into Category C-3, these results will be promptly reported to the commission pursuant to Specification 6.9.4 prior to resumption of plant operation.

Such cases will be considered by the commission on a case-by-case basis and may result in a requirement for analysis, laboratory examinations, tests, additional eddy-current inspection, and revision of the Technical specifications, if necessary.

l 3/4.4.11 Main Coolant System Vents i.

Main coolant system vents are provided to exhaust noncondensable gases and/or steam from the primary system that could inhibit natural circulation core cooling. The OPERABILITY of at least one main coolant system vent path from the reactor vessel head or the pressurizer steam space ensures the capability 6

exists to perform this function.

The redundancy of the mal

,olant system vent paths, the normally closed valves and the open valve a ecuit breakers serve to minimize the probability i

of inadvertent irreversible actuation while ensuring that a single failure of a vent valve, power supply, or control system does not prevent isolation of the vent path.

The function, capabilities, and testing requirements of the main coolant system vent systems are consistent with the requirements of Item II.B.1 of NUREC-0737, " Clarification of TMI Action Plan Requirements," November 1980.

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YANKEE ROWE B3/4.4-13 Amendment [,p,[

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