1. Managing Design and License Basis Info
Presented By: Sam Melton

2. Topics of Interest Definitions Tools/Technology Good Practices
Changes/Update/Obsolete Info
Ease of retrieval
Navigation/Cross Reference
Innovations
Level of Detail
Fidelity to Operation
Margin

3. Definitions
Design Basis = Inputs, assumptions and methodology by which requirements are derived.
License Basis = Information used by the regulator as basis for license application including the regulator’s statement of approval.

4. DBDs Per NEI guideline Major Systems Maintained (most places)
Relatively few changes
NOT a source document (most places)

5. Tool/Techniques Atlas (First Energy and Cooper) Modeled events
Identify critical parameter and equipment
Changes flagged to all impacted D.B.
Models to procedure level

6. Tool/Techniques (cont)
Duke – Safety Analysis Inputs Manual (Database application internally developed)
Dominion – Accident Analysis DBD (Database – internally developed)

7. Good Practices First Energy Tier 1 Calculations TS setpoint deviation
System performance analysis
Several more
Dominion
Created a Technical Publication Group using Adobe FrameMaker Update DBD, FSAR, TRM able to hyperlink references. Benefits of having all documents available electronically.