ML20247E994
| ML20247E994 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 05/16/1989 |
| From: | GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20247E991 | List: |
| References | |
| NUDOCS 8905260390 | |
| Download: ML20247E994 (1) | |
Text
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r K. ~ Instrument Check - An instrument check is the qualitative
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determination of acceptable operability by observation of
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instrument behavior during operation. This determination shall include, where possible, comparison of the instrument with other independent instruments measuring the same variable.
L.
Instrument Functional Test - An instrument functional test means the injection of a simulated signal into the instrument primary sensor to verify the proper instrument channel response, l
alarm and/or initiating action.
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Limitina Conditions for ODeration (LCO) - The. limiting conditions
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for operation specify the acceptable levels of system performance I
necesse g to assure safe startup and operation of the Unit.
J When these conditions are met, the Unit can be operated safely and abnormal situations can be safely controlled.
N.
Limitina Safety System Settina (LSSS) - The limiting safety system settings are settings on instrumentation which initiate the automatic protective action at a level such that a Safety Limit will not be exceeded. The region between the Safety Limit and these settings represents margin with normal operation i
lying on the conservative side of these settings. The margin j
has been established so that with proper operation of the J
instrumentation the Safety Limits will never be exceeded.
O.
Loaic System Functional Test - A logic system functional test means a test of all relays and contacts of a logic circuit from sensor to activated device to insure that components are operable per design intent. Where practicable, action will go to completion; e.g., pumps will be started and valves opened.
p.
(Deleted)
Q.
Operable - A system, subsystem, train, component or device shall
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be operable or have operability when it is capable of perfonning its specified function (s).
Implicit in this definition shall be the assumption that all necessary attendant instrumentation, controls, normal and emergency electrical power sources, cooling or seal water, lubrication or other auxiliary equipment that are required for the system, subsystem, train, component or device to perform its function (s) are also capable of performing their related support function (s).
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(Deleted) l 8905260390 e90516 DR ADOCK 0500 i
HATCH - UNIT 1 1.0-3 Proposed TS/01224/131-27
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