ML20236D901

Proposed Tech Specs Revising Section 4.3.8.2.c to Allow One Time Extension for Disassembly & Insp of Turbine Control Valves

ML20236D901
Person / Time
Site:	Fermi
Issue date:	03/10/1989
From:	DETROIT EDISON CO.
To:
Shared Package
ML20236D822	List: ML20236D901 NRC-89-0047, Application for Amend to License NPF-43,requesting Rev of Tech Spec Section 4.3.8.2.c to Allow One Time Extension
References
NUDOCS 8903230342
Download: ML20236D901 (1)

Text

__

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:

a. With one turbine control valve, or one turbine stop valve per high pressure turbine steam lead inoperable and/or with one tudine low

^

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:

a. At least once per 7 days by cycling each of the following valves l 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.

b. At least once per 18 months by performance of a CHANNEL CALIBRATION

( of the turbine overspeed protection instrumentation.

I

c. At least once per 40 monthf by dismantling and inspecting at least one of each of the above valves and performing a visual and surface inspection of all valve seats, disks, >.nd stems and verifying no unacceptable flaws or excessive corrosion. If unacceptable flaws or excessive corrosion are found, all other valves of that type shall be inspected.

i

$ ~l~b /mS / g nrves lkse~s ~lt'6f tr1* n sl is m j ] ,

m +n Aws & A A rst m A<.r y n 9 <.,

FERMI - UNIT 2 3/4 3-85 1

8903230342 890310 PDR ADOCK 05000341 P PNU

______--__ _