VV stress under quench model review

[ajpearcey]

closes #3354

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 97.22222% with 1 line in your changes missing coverage. Please review.

Project coverage is 30.86%. Comparing base (8966166) to head (c1dcea5).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
process/hcpb.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3366      +/-   ##
==========================================
- Coverage   31.19%   30.86%   -0.34%     
==========================================
  Files          83       83              
  Lines       19936    20783     +847     
==========================================
+ Hits         6220     6414     +194     
- Misses      13716    14369     +653     

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