Background is far lower than 1mR per hour. Assuming your normal exposure from all natural sources is about 100mR per year, you’d be looking at roughly 0.01 mR/hr. So even at 1000X background, you’re still around 10mR/hr. Significant, but you’d have to stay there on the order of a month to approach 10CFR20 limits (5R/year.)
Libs would be disappointed eventually.
I believe that if the doo doo were to hit the fan, lots of employees would risk heavy exposure to get things done.
I did 6 refuelings (built scaffolding) at Clinton Power Station, Clinton, IL. I might have gotten 15-20 REM total exposure. Fascinating work, crawling ALL over the systems and nooks and cranies... I likened the work to a mouse being allowed to crawl on a recently shut off racing engine, when explaining my job to friends and family. Lots of Homer Simpson T shirts were en vogue with the full spectrum of radiological workers. Chaos = cash. LOL.