rem/roentgen equivalent in man

Water cannot be allowed to touch the thing that is deep inside the reactor: about 200 tons of melted nuclear fuel and debris, which burned through the floor and hardened, in one spot, into the shape of an elephant’s foot. This mass remains so highly radioactive that scientists cannot approach it. But years ago, when they managed to place measurement instruments nearby, they got readings of 10,000 rem per hour, which is 2,000 times the yearly limit recommended for workers in the nuclear industry.


rem

(rĕm)
n.

1. The amount of ionizing radiation required to produce the same biological effect as one rad of high-penetration x-rays.
2. A unit for measuring absorbed doses of radiation, equivalent to one roentgen of x-rays or gamma rays.

[r(oentgen) e(quivalent in) m(an).]

[名]レム：電離放射線量の単位.

［roentgen equivalent in man］