ML20095F892
| ML20095F892 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 04/28/1992 |
| From: | GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20095F820 | List: |
| References | |
| NUDOCS 9204280323 | |
| Download: ML20095F892 (1) | |
Text
1 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 />,
=
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,
~
- 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
-)eachof b.
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-
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