I don't know what happened or how happened, but after i installed this mod to my world, my reactors that were steadily on 975-980 degree C are now at 1005 degree C. but they don't explode either :D just to be sure i tested back my original save without this mod and yes they were still at 975 C and they didnt got any hotter. i then recreated it by creating another bug test save with this mod and yes, reactor is steadily going up from 975 C to 1000 C. i then decided if it was my game that was broke and removed this mod, and let the reactor heat up to 1000 C, and it exploded.
I obviously have installed both realistic reactors and plutonium energy, duh.

anyway, here's a bug report in programmer's terms:
when installed, realistic reactors nuclear reactors do not explode when temperature exceeds 1000 C.
also when installed, realistic reactors can't keep up with the ECCS cooling and starts heating up to 1005 C.

it is really baffling as this mod doesn't even touch reactor mechanics. it is just 2 lines of code. weird.

huh, yeah that is weird... I'll just try testing it out myself

I don't know if you have other mods on or something, but in my test with only this mod and RR and PE, they go ka-boom just fine.

haha, indeed weird. maybe i should upload a video of it or post my modlist: https://imgur.com/LewzVZL

hey i uploaded a video of me experimenting with the bug: https://youtu.be/lVnHosb2Gf8

Hmm... I would suggest you try to dismantle the reactors and place them down again. I believe I heard somewhere that realistic reactors can need to be re-placed when changing other mods that mess with it.

Hmmm, I see. But the option that I will probably choose will be to uninstall Realistic Reactors mod. I don't know why, but I didn't like that how that mod removes the breeder system from the game and the cooling tower mechanism it adds is a bit ambiguous.