Passage: 'A process upset is defined as any deviation from normal operating parameters that requires operator intervention. Minor upsets can be corrected by the operator without supervisor notification. Major upsets — those that cannot be corrected within 15 minutes or that affect more than one process unit — must be reported to the supervisor immediately.' A deviation corrected by an operator in 10 minutes affecting only one unit is classified as:
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A
A major upset requiring immediate supervisor notification
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B
A minor upset not requiring supervisor notification
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C
A major upset because any deviation must be reported
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D
A critical incident requiring plant-wide alert