I worked inside boilers, welding stainless tubing
at PG&E Antioch & Pittsburg Power Plants shut downs,
not sure how hot it got I don't remember, I'm sure it got to 150*+,
dozens of welders going at any one time, everyone on scaffolding
everyone wearing respirators & full leathers/sleeves & chaps etc.
we could stay in for 2 hrs at a stretch no longer,
A-typical Union stuff...
We all had to really hydrate,
you could wring out my cloths/Carharts overalls after every shift,
almost never peed either...
Even after drinking 2 x 2 ltr bottles of water or electrolytes
sometime they'd call us out in little over an 1 hr,
because air quality or heat, send us right back in after they'd
evacuate the air/smoke fumes etc.,
never really did 2hrs straight, Union wouldn't let US, no matter how safe...
I've also worked in, the other extremes too
Prudhoe Bay/Pt. Barrow Ak. Amoco/Tester Oil at neg -50* to -70*'s or worse
you learn to deal, you suck it up & you work hard or you went home...
We had 45 min. max outside exposure & 15-30 min. inside
repeated daily for a 12 hr shift, 4 hrs off & food, another 8 hrs shift & 12hrs off
for 48 days, 14 days off & back at it, 3 cycles of it, made a shitload of $$$ in overtime
more than a $1000 a day after the 7th day...
It's not for the weak that have to have constant scheduled breaks
or the easily offended, you will not make it there...
If I did it again, If I had to choose,
I'd rather take the heat, rather than the freezing *** cold...
People got really hurt/frostbite severely, hands & feet going numb
& really sick from the cold exposure, lung issues etc., luckily not me...
Or damn Polar bears, but that's a different story all together...