A scribe is usually assigned to take notes of the review. Recent advances in software as well as laptop computers can provide on-line data collection possibilities by the scribe. Scheduling more than four hours at a time can result in the team members losing energy and eager to finish the analysis rather than probing deeper. It is the job of the facilitator to keep the effort moving productively. These errors and failures can be considered during normal production operations, during construction, during maintenance activities, as well as during de-bugging situations.
Experienced personnel are knowledgeable of past failures and likely sources of errors.
That experience should be used to generate What-If questions. Some typical questions that could be generated are shown in Figure C-2 for illustration purposes. As the What-If questions are being generated, the facilitator should ensure that each member of the team has an opportunity to input potential errors or failures. Determining the answer to each question as it is generated creates the danger of closing too soon on all possible upsets. The facilitator needs to assess if the team has really looked at all of the possibilities before going to the next step of answering the questions.