[brazzy]

Oh damn... These figures refer to acute radioation poisoning, i.e. what happens when radiation is so intense that it directly kills so many of your cells that your body can't cope.

Even if at 0.25 Sv none of that happens, you still have a very actual, massively increased risk of cancer and genetic defects in future children. To declare "no health issues", you most definitely want to stay several orders of magnitude below that (there is always and increased risk of cancer and birth defects, but at some point it gets lost in the noise).

I really don't want to sound condescending, but you should not issue statements here if you don't know such fundamental aspects.