The pipe must be electrically continuous (or made electrically continuous by bonding around insulated joints, plastic pipe, or plastic water meters) to the point where the protector ground wire connects. A meta
1. Apparatus for drilling along an underground inverted path comprising: a directional drill including an in-hole motor; a trailing drill string of non-uniform external diameter attached to said directional drill, the largest external diameter of said drill string being less than the diameter of th...
and a relative density with respect to water greater than 1, the method comprising:providing along the installation section at least one installation duct, the ratio of the inside diameter of the duct to the outside diameter of the cable being between 1.2 and 1.6;pushing the cable into one ...
to install the explosive charge in its structure98and to provide passageway for the steam lines, the water feed lines and the electrical supply lines to the reactor. All of these lines must have designs that would allow them to be manually disconnected or to be automatically disconnected when ...