Discussion about this post

User's avatar
msxc's avatar

Fantastic writing! This should be must read for anyone interested in NP, clean power, real safety, policies that work etc. Always wondered how this PRA come to be as they are, and there was always tingling feeling that it must be easy to get any desired number. And then forget about something important which will happen in real life.

Expand full comment
Paul Lafreniere's avatar

Congratulations. You nailed it by laying out sound principles & indisputable logic. I have tried to summarize & fill in the blanks of what I understood: Not in any order:

NPP Technology "Fitness for Purpose" Principles:

1. Design for simplicity

2. Design for consequence mitigation & asset hardening

3. Tie exclusion zone to worst accident case after PRA rationalization. Set insurance rates as a function of Exclusion Zone radius.

4. Independently Monitor Operations to ensure no encroachment upon Defense-in-Depth & PRA envelope

Operations:

1. Tighten Monitoring for complexity & fragility i.e., non-normal states, interdependencies, unpredicted behaviour

2. Tighten Monitoring to ensure no encroachment upon Defense-in-Depth & PRA envelopes. This includes any interdependencies between envelopes. Set triggers to review D-in-D & PRA "envelopes"

Expand full comment
1 more comment...

No posts