(Answered) CASE, Ammo explosions and PSRs

[Lorcan Nagle]

If a 'Mech suffers an ammo explosion in a CASE or CASE-II protected bay during a phase that generates more than 20 points of damage, but results in less than 20 points of total damage being applied to the 'Mech (like, say a heat-induced ammo explosion in an already heavily damaged location), does it generate a PSR?

[Paul]

No.

Example:
Side torso has CASE and 19 internals. No armor.
Hit with a Medium laser: 5 damage
Crit results in an ammo explosion of a ton of machine gun ammo. 400 damage potential.
14 is applied to the internals, the remaining damage is vented due to CASE.
'Mech has suffered 5+14=19 damage; no PSR needed for 20+ damage, since we didn't hit 20.