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- A Checklist Analysis uses a written list of items or procedural steps to verify the status of a system. Traditional checklists vary widely in level of detail and are frequently used to indicate compliance with standards and practices. In some cases, analysts use a more general checklist in combination with another hazard evaluation method to discover common hazards that the checklist alone might miss. The Checklist Analysis approach is easy to use and can be applied at any stage of the process’s lifetime.
- A detailed checklist provides the basis for a standard evaluation of process hazards. It can be as extensive as necessary to satisfy the specific situation, but it should be applied conscientiously in order to identify problems that require further attention. Generic hazard checklists are often combined with other hazard evaluation techniques to evaluate hazardous situations. Checklists are limited by their authors’ experience; therefore, they should be developed by authors with varied backgrounds who have extensive experience with the systems they are analyzing. Frequently, checklists are created by simply organizing information from current relevant codes, standards, and regulations. Checklists should be viewed as living documents and should be audited and updated regularly.
- Reference: CCPS: guidelines for hazard evaluation procedures, third edition
- Formalized listing of actions to be performed in a given work setting to ensure that, no matter how often performed by a given practitioner, no step will be forgotten. An analogy is often made to flight preparation in aviation, as pilots and air-traffic controllers follow pre-takeoff checklists regardless of how many times they have carried out the tasks involved. Checklists are an example of positive reporting on safety critical tasks, in other words the affirmation of the safe status of equipment. In contrast a system of negative reporting assumes that all equipment is in a safe state unless explicit warning that it is not- a potential flaw in the system for closing bow doors in the Herald of Free Enterprise sinking.
- Reference: S2S (safety to safety website: Patient Safety Network, PSNet)
- Technical Tools/Hazards Identification/Non-Scenario-Based Hazard Evaluation Procedures