Diver Lift System Operation and Maintenance Manual.

摘要

This manual contains information regarding the safe operation and proper maintenance of the Diver Lift System. The diver lift system has been developed by the Naval Civil Engineering Laboratory (NCEL) to permit the safe and effective lifting of objects when working underwater. The Diver Lift System is composed of 3 sizes of open bottom lift bags. The largest bag is capable of lifting a range of objects weighing from 1000 to 3000 pounds. The medium bag is capable of lifting a range of objects weighing from 500 to 1250 pounds. The small bag is capable of lifting a range of objects weighing from 220 to 550 pounds. Each lift bag has features permitting general buoyancy adjustment and fine trimming capability for maneuvering various loads. The maximum weight to be lifted is adjusted by setting a leakproof zipper is positioned relative to weight designations that have been printed on the bag. The ascent/descent rate and hovering capability of the bag is controlled by the diver. The large bag uses a 6 inch iris diaphragm dump valve. (sdw)