ML20082D392

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Proposed Tech Specs,Revising Surveillances 4.3.4.1.2.a & 4.3.4.1.2.b Concerning Turbine Valve Testing Interval
ML20082D392
Person / Time
Site: Arkansas Nuclear Entergy icon.png
Issue date: 04/04/1995
From:
ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20082D380 List:
References
NUDOCS 9504100087
Download: ML20082D392 (5)
v • d • e


Text

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PROPOSED TECHNICAL SPECIFICATION CHANGES I

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9504100087 950404 PDR ADOCK 05000368 P PDR

.. INSTRUMENTATION.

3/4.3.4 TURBINE OVERSPEED PROTECTION LIMIThNGCONDITIONFOROPERATION 3.3.4.1 At least one turbine overspeed protection system shall be OPERABLE.

APPLICABILITY: MODES.1, 2 and 3.

ACTION:

a. With one stop valve and/or one control valve inoperable,'within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> either restore the inoperable valve (s) to OPERABLE status or close the inoperable valve (s); otherwise, 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 one combined stop and intercept valve inoperable, within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> either restore the inoperable valve to OPERABLE status or close the inoperable valves otherwise, 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 />.
c. 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 /> either restore the system to OPERABLE status or isolate the turbine from the steam supply.

SURVEILLANCE REQUIREMENTS 4.3.4.1.1 The provisions of Specification 4.0.4 are not applicable.

4.3.4.1.2 The above required turbine overspeed protection system shall be demonstrated OPERABLE:

a. At least once per 92 days by direct observation of the movement of each of the following valves through at least one complete cycle from the running position:
1. Four high pressure turbine stop valves.
2. Four high pressure turbine control valves.
3. Four low pressure turbine combined stop and intercept valves,
b. At least once per 18 months by performance of a CHANNEL l CALIBRATION on the turbine overspeed protection systems.
c. At least once per 40 months by disassembling at least one of l each of the above valvea and performing a~ visual and surface inspection of valve seats, disks and stems and verifying no unacceptable flaws or corrosion.

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l r :3 - INSTRUMENTATION .i 3/4.3.4 TURBINE OVERSPEED PROTECTION LIMITING CONDITION FOR OPERATION j 3.3.4.1 At least one turbine overspeed protection system shall be OPERABLE.

APPLICABILITY: MODES 1, 2 and 3.

ACTION:

a. With one stop valve and/or one control valve inoperable, within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> either restore the inoperable valve (s) to OPERABLE status I or close the inoperable valve (s); otherwise, isolate the turbine r 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 one combined stop and intercept valve inoperable, within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> either restore the inoperable valve to OPERABLE status or close the inoperable valves otherwise, isolate the turbine from' i 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 />.  ;
c. 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 /> either restore the system to OPERABLE status or isolate the turbine from the stear, supply.

4.3.4.1.2 The above required turbine overspeed protection system shall be '

demonstrated OPERABLE-

a. At least once per 492 days by cy: ling :::h f th: fell: ring v 17::

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direct observation of the movement of each of the following valves through at least one complete cycle from the running position:

1. Four high pressure turbine stop valves.
2. F::: 1:r p::::::: turbin; ::--'in:d :t:p : d int:::;pt valv::.Four high pressure turbine control valves.
3. Four low pressure turbine combined stop and intercept valves. l ,

I eb. At least once per 18 months by performance of a CHANNEL l l CALIBRATION on the turbine overspeed protection systems. l t

dc. At least once per 40 months by disassembling at least one of l j each of the above valves and performing a visual and surface  :

inspection of valve seats, disks and stems and verifying no ]

unacceptable flaws or corrosion. 1 i

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