What are the basic error type of Unsafe Acts?

What are the basic error type of Unsafe Acts?

• A. Slip, Lapse
• B. Mistake, Violation
• C. Slip, Lapse, Mistake
• D. Error, Negligence

Answer: (C)

In unsafe acts, errors come in three main forms: slips and lapses, which are execution and memory failures, and mistakes, which are faulty decisions or plans. A slip happens when the action is not carried out as intended even though the plan is fine—often due to attention or perception failures, like grabbing the wrong tool during a routine task. A lapse is a memory lapse or忘记 a step in a sequence, such as forgetting to perform a required safety check. Mistakes occur when the plan itself is flawed—you either apply the wrong rule (rule-based mistake) or lack necessary knowledge to handle the situation (knowledge-based mistake), leading to an unsafe outcome even if you follow the plan. Violations, while related to unsafe acts, are deliberate deviations from rules or procedures and aren’t considered basic execution or planning errors in this framework. That’s why the combination of slip, lapse, and mistake best captures the fundamental error types described here.

In unsafe acts, errors come in three main forms: slips and lapses, which are execution and memory failures, and mistakes, which are faulty decisions or plans. A slip happens when the action is not carried out as intended even though the plan is fine—often due to attention or perception failures, like grabbing the wrong tool during a routine task. A lapse is a memory lapse or忘记 a step in a sequence, such as forgetting to perform a required safety check. Mistakes occur when the plan itself is flawed—you either apply the wrong rule (rule-based mistake) or lack necessary knowledge to handle the situation (knowledge-based mistake), leading to an unsafe outcome even if you follow the plan.

Violations, while related to unsafe acts, are deliberate deviations from rules or procedures and aren’t considered basic execution or planning errors in this framework. That’s why the combination of slip, lapse, and mistake best captures the fundamental error types described here.