The extra water is also a very effective radiation shield for those who are directly above the vessel.

Water is useful as a radiation shield and in many chemical processes.

"It was meant to cripple the ship's radiation shield," she said defensively.

"Four people are caught in a solar storm out in the Belt without a working radiation shield."

He pushed on anyway, knowing that his radiation shield was damaged.

You could have turned back once you realized the radiation shield was failing.

Adam slumped against the door for a few seconds, then came in and began quietly buckling on a radiation shield.

And meanwhile, they have done nothing to support our plans for a global radiation shield.

In the pools the water cools the fuel and acts as a radiation shield.

He removed the panel and exposed the outer radiation shield of the reactor.