ELICITATION QUESTIONS

J.1 Instructions

There are four basic quantities that are the ultimate focus of this exercise: the LOCA frequencies of piping components, the LOCA frequencies of non-piping components, the LOCA probabilities of piping components after emergency faulted loading, and the LOCA probabilities of non-piping components after emergency faulted loading. The elicitation will be structured so that each of these questions can be answered using one of two question sets. The question sets are structured to decompose the underlying issues using different approaches so increase your flexibility.

The bottom-up approaches (3A, 4A, 5A, 6A) could entail significantly more work if every piping and non-piping system is evaluated. It is recommended that people choosing this approach focus on significant contributing issues in only significant piping and non-piping systems to reduce the workload. Similarly the people choosing the top-down approaches (3B, 4B, 5B, 6B) may want to ensure that their significant issues are manifested correctly within relevant systems. These strategies allow you to combine features of each methodology.

Only a few additional examples of these questions are provided in this document. Many examples will be similar to those included in the Elicitation Question Development document. Please refer to this document and the Kick-off Meeting Notes document as indicated within the notes section for the questions.

J.1.1 Specific Instructions: Minimum Requirements Prior to Your Elicitation

A1. Provide answers to the questions in the “Base Case Evaluation” area.

A2. Provide MV estimates for the question set within the “Regulatory and Utility Safety Culture” area.

A3. Provide MV estimates for at least one question set within the “LOCA frequencies of Piping Components” area.

A4. Provide MV estimates for at least one question set within the “LOCA frequencies of Non-Piping Components” area.

A5. Provide MV estimates for at least one question set within the “LOCA Probabilities of Piping Components under an Emergency Faulted Load” area.

A6. Provide MV estimates for at least one question set within the “LOCA Probabilities of Non-Piping Components under an Emergency Faulted Load” area.

A7. Categorize the uncertainty ranges (90% coverage intervals) associated with your MV estimates in A2 — A6 as low, medium, or high.

J.1.2 Specific Instructions: Additional Questions During Your Elicitation

We will be asking for your response within the following general areas.

B1. Provide rationale and discuss those important issues that you identified and quantified in questions A2 — A6.

B2. Quantify the uncertainty ranges (90% coverage intervals) associated with estimates provided for A2 — A6. This will quantify the initial responses in A7.

B3. Provide MV estimates for the question sets that you did not initially answer in A2 — A6.

B4. Quantify uncertainties associated with answers in B3.

B5. Ensure that the critical issues for LOCA frequencies are captured.