US spacewalkers swap, check coolers ‘Leaky’ and ‘Frosty’

Tampa (AFP) May 16, 2018

A pair of American astronauts completed a successful spacewalk outside the International Space Station Wednesday to swap and check on two external cooling boxes, nicknamed “Leaky” and “Frosty,” NASA said.

The boxes, each about the size of a mini-refrigerator or window AC unit, are crucial to keeping the batteries cool aboard the orbiting lab.

Since they operate using highly toxic ammonia