Liquefied Gas Evacuation Assembly System for Underground Storage Tanks

摘要

An evacuation assembly for empting underground tanks of liquefied gas. The assembly not only provides ease of attaching a coupling to the underground tanks but also increases the safety of the individual attaching the coupling to the underground tank. The evacuation assembly uses a riser extension with a rotatable hose coupling mechanism to allow the coupling to be easily attached to the underground tank without the individual being exposed to volatile vapors that may have accumulated in the dome of the underground tank.