ML20127N966

Proposed Tech Specs Adopting Westinghouse STS Surveillance Frequency for ECCS Flow Testing & Relieving Util from Performance of Unnecessary Surveillance Frequencies

ML20127N966
Person / Time
Site:	Yankee Rowe
Issue date:	06/26/1985
From:	YANKEE ATOMIC ELECTRIC CO.
To:
Shared Package
ML20127N960	List: ML20127N956 ML20127N966
References
NUDOCS 8507020266
Download: ML20127N966 (1)

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EMERGENCY CORE COOLING SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 4.

Verifying the proper positioning of hot leg injection throttle valve SI-V-645.

5.

Verifying that each charging pump stops automatically upon receipt of a safety injection signal.

6.

Verifying that the charging header flow metering instrument is OPERABLE by performing a CHANNEL CALIBRATION.

7.

Verifying the proper positioning of the HPSI throttle valves SI-V-671, 672, 673 and 674 by performing an inspection to ensure that:

(a) Each valve locking device is in place and securely welded to the valve handle and to the valve yoke.

(b) The scribe mark on each valve body aligns with the scribe mark on the valve yoke.

f.

During shutdown following completion of the modifications to the ECCS subsystems that alter the subsystem flow characteristics and/or any time either test under 4.5.2.e.7 is failed, by developing a backpressure of 1 875 psig in the high pressure safety injection header with two HPSI pumps operating as follows:

1.

Pressure to the suction of the HPSI pumps to be 170 10 psi.

2.

LPSI flow is isolated.

3.

Injection flow is to one loop with the other loops isolated by closing the appropriate injection gate valves CS-MOV-536, CS-MOV-537, CS-MOV-538 and CS-MOV-539.

4.

The flow to the injection loops shall not be less than 200 gpm.

5.

The above test shall be repeated to include the operation of all HPSI pumps.

g.

During shutdown following completion of modifications to the ECCS subsystems that alter the subsystem flow characteristics as follows:

1.

For the Low Pressure Safety Injection (LPSI) pumps, verify that all combinations of two pumps develop a combined flow 1 2180 gpm.

2.

For the hot leg injection line, verify the proper positioning of throttle valve SI-V-645 by flow testing.

Yankee Rowe 3/4 5-8 8507020266 850626 PDR ADOCK 05000029 p

PDR L