| system which monitors the operation of a reactor and which, on sensing an abnormal condition, automatically initiates actions to prevent an unsafe or potentially unsafe condition
Note 1 to entry: The “system” in this case encompasses all electrical and mechanical devices and circuitry, from sensors to actuation device input terminals. Note 2 to entry: This system can also be actuated manually by plant operators. Note 3 to entry: This entry was numbered 394-34-08 in IEC 60050-394:2007.
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