"Film lights" are pretty likely to be 5kW+ arc lamps. Lighting fixtures definitely include filters to keep the UV out of the beam, but film still loves giant HMI fresnels.
I should have been more specific, i had mean to say carbon arc, as those were alot different that todays technology, though I'm not sure about the level of UV protection offered back in the 70-80s
Carbon arc was definitely a whole different ball game. I'd think the fixtures were filtering at least most of it, or else everyone on set would have pretty much the same problems as someone doing arc welding without a mask and sleeves in short order.
Sure, when I'm back to work I'll definitely try carrying one. I'm not opposed to knowing for sure, though personal experience has shown it never to be an issue. I've never gotten burned, nor heard of anyone burned; and with the intensities we run you would at minimum expect eye burns, but doesn't happen even on 14hr days.
If you're too close you may get burned from the heat, but actors spend hours under them and don't get tanned.
But yeah, 72000 watts is alot of heat to pump at an object for 9 hours