PORV stands for pilot operated relief valve.

Difficult to correlate stuck open valves categories with leak rate sizes/categories; size of valves will vary between plants.

Presentation #20 — Emergency and Faulted Loading Base Case Development By Gery Wilkowski

No uncertainties applied to loads in Gery’s analysis.

Base case assumes idealized TWC geometry.

Did not do any subcritical crack growth; thus did not consider residual solutions.

LBB. ENG2 is in form of closed form solutions.

For predicting large crack growth in a pipe tests it is better to use J-M than J-D.

Duane Arnold crack would have failed if subjected to Level B type loading.

Global secondary stresses act as primary stresses if crack large enough such that failure stress is below yield strength.