ML20095F892

Proposed Tech Spec 4.3.4.2.d Re Periodic Disassembly & Exam of Valves Associated W/Turbine Overspeed Protection Sys

ML20095F892
Person / Time
Site:	Vogtle
Issue date:	04/28/1992
From:	GEORGIA POWER CO.
To:
Shared Package
ML20095F820	List: ELV-03576, Application for Amends to Licenses NPF-68 & NPF-81 to Revise TS 4.3.4.2.d Re Periodic Disassembly & Exam of Valves Associated W/Turbine Overspeed Protection Sys ML20095F892
References
NUDOCS 9204280323
Download: ML20095F892 (1)

Text

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i INSTRUMENTATION 3/4.3.4 TURBINE OVERSPEED PROTECTION LIMITING CONDITION FOR OPERATION l 3.3.4- At-least one Turbine'Overspeed Protection System shall be OPERABLE. l

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

-ACTION:

a. -With one stop valve or one control valve per high pressure turbine steam line inoperable and/or with one reheat stop valve or one -

reheat intercept valve per low pressure turbine steam line inoperable, +

restore the inoperable valve (s) to 0PERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />,

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or close at'least one valve in the affected steam lines, or isolate the turbine-from the steam supply within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />..  ;

b. With the-above required Turbine Overspeed Protection System otherwise inoperable, within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> isolate the turbine from the steam supply.

.. SURVEILLANCE REQUIRE!!ENTS 4.3.4.1 The provisions of-Specification 4.0.4 are not applicable.

4.3.4.2 The above required Turbine Overspeed Protection System shall be demonstrated OPERABLE:

a. At least once per 7 days while in MODE 1 and while in MODE 2 with the l turbine operating, by cycling each of the following valves through at '

-least one ' complete cycle from the running position:

1) Four high pressure turbine stop valves,

2) Six low pressure turbine intermediate stop valves, and

3) Six low pressure turbine intercept. valves,

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b. . At least once per 31 days while in MODE 1 and while in MODE 2 with the turbine ~ operating, by. direct observation of the' movement of- each

-of the above valves and the foce high pressure turbine control valves, through one-complete cycle from the running positio'n, ,

c. At-least once per 18 months by performance of_a. CHANNEL CAllBRATION on the Turbine Over eed Protection Systems, and-(ou

d. At least once per months by disassembling b. -)eachof ,

the above' valves neluding the four high pressure turt,ine control valves) and performing a visual and surface inspection of valve seats, disks and stems and verifying no unacceptable flaws or corrosion.

• Not applicable in MODE 2 or-3 with all main steam line isolation valves and associated bypass valves in the closed position and all other steam flot paths

to the turbine isolated.

V0G1LE UNI 15 - 1 & 2 3/4 3-81 9204280323 920429-PDR ADOCK-05000424-P- . ppg

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