ML20236D901
| ML20236D901 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 03/10/1989 |
| From: | DETROIT EDISON CO. |
| To: | |
| Shared Package | |
| ML20236D822 | List: |
| References | |
| NUDOCS 8903230342 | |
| Download: ML20236D901 (1) | |
Text
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INSTRUNENTA7!0N g
3/4.3.8 TUR81NE OVERSPEED PROTECTION SYSTEN 3
LINITING CONDITION FOR OPERATION 3.3.8 At least one turbine overspeed protection system shall be OPERABLE.
APPLICABILITY: OPERATIONAL CONDITIONS 1 and 2.
~
l ACTION:
With one turbine control valve, or one turbine stop valve per high pressure turbine steam lead inoperable and/or with one tudine low a.
pressure stop valve or intercept valve per low pressure turbine steam lead inoperable, restore the inoperable valve (s) 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 close at least one valve in the affected steam lead (s) 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 />.
With the above required turbine overspeed protection system otherwise b.
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 REQUIREMENTS 4.3.8.1 The provisions of Specification 4.0.4 are not applicable.
4.3.8.2 The above required turbine overspeed protection system shall be demonstrated OPERABLE:
At least once per 7 days by cycling each of the following valves l
a.
through at least one complete cycle from the running position and observing valve closure:
1.
Four high pressure turbine stop valves, 2.
Six low pressure turbine low pressure stop valves, i
3.
Four high pressure turbine control valves, and 4.
Six low pressure tusine intercept valves.
At least once per 18 months by performance of a CHANNEL CALIBRATION b.
(
of the turbine overspeed protection instrumentation.
I At least once per 40 monthf by dismantling and inspecting at least c.
one of each of the above valves and performing a visual and surface inspection of all valve seats, disks, >.nd stems and verifying no If unacceptable flaws or unacceptable flaws or excessive corrosion.
excessive corrosion are found, all other valves of that type shall be inspected.
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FERMI - UNIT 2 3/4 3-85 1
8903230342 890310 PDR ADOCK 05000341 P
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