A class with identifier
|A <SHEAR RAM> is an <ARTEFACT> and a <RAM> that is a closure mechanism on a wells blowout-preventer stack fitted with chisel-like jaws that are hydraulically operated. When the ram is closed on the pipe, the jaws or blades cut the pipe, permitting the upper section to be removed from the BOP stack
|Ill. Petr. Ref. Dict.