The engineers also replaced large pieces of foam that protected certain fittings and pipes from ice accumulation with electrically heated plates.

A little more than two months later, engineers had replaced the bridge and reopened it to traffic.

Merck chemists and engineers subsequently replaced the compound with others having fewer negative environmental effects.

In a later test, however, the new point sensor box failed, and so engineers replaced it with the box from the shuttle Endeavour.

The atomic engineer whom he had just relieved glanced from one to the other, then carefully replaced the wrench in its rack.

In addition, engineers replaced one of five main shuttle flight computers and a data relay module after they malfunctioned.

So far this year, engineers have replaced about 45 outdated switches.

Our engineers will replace its reactor core.

In such cases engineers replace the bridge deck in sections with lightweight steel plates, which are stiffened by a series of ribs beneath the plate.

At other plants, engineers have replaced only parts of generators because the hatches are too small.