ML20056G932
| ML20056G932 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 09/01/1993 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20056G927 | List: |
| References | |
| NUDOCS 9309070336 | |
| Download: ML20056G932 (1) | |
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Enclosure 4.5-EMERGENCY POWER SYSTEM PERIODIC TESTING Anolicability:
l Applies to the period testing requirements of the station emergency electrical power systems.
1 Ob_iective:
To verify the operability of the station emergency electrical power systems.
Soecification:
i A.
Diesel Generators The following tests shall be performed:
1.
Manually initiated demonstration of the ability of each i
diesel generator to start and deliver power at 90 to 100 percent of the continuous rating of 2597 KW with a unity power factor when operated in parallel with other power sources. This test will be conducted monthly whenever Plant Conditions are as defined in Section 3.6.A of these Specifications, and shall be of at least two hours duration, and include operation of the associated fuel oil i
transfer pump.
l 2.
Demonstration of the readiness of the diesel generatu.' to i
start automatically and restore power to vital equipment by initiating or simulating loss of all normal a-c staticn service power supplies. This test will be conducted during each refueling interval.
(
3.
Manually initiated demonstration of the ability of each diesel generator to start and deliver power to the maximum f
expected emergency real (KW) and reactive loads (KVAR) when operating in parallel with other power sources.
This test will be conducted semi-annually, shall be of at least two hours duration and may be substituted for a monthly surveillance test.
B.
Station Batteries:
Surveillance of eech of the two main station batteries that are associated with the d-c buses feeding the safeguards equipment shall be as follows:
1.
Each week the specific gravity and voltage of the pilot cells shall
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be measured and an overall visual inspection of erch leattery shall be performed.
2.
Every other month the liquid level, the specific gravity and the voltage of all cells of each of these batteries shall ba checked.
l 3.
During the initial refueling interval, and every third refueling interval thereafter, these batteries shall be subjected to a rated load discharge test.
W 9309070336 930903 DR ADOCK 05000309 PDR;
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