Construction Diver Lift Systems

Abstract

A diver-operated lift system has been developed for underwater construction divers. The system consists of three different open-bottom lift bags with the following lift ranges: 200 to 550 pounds, 500 to 1,250 pounds, and 1,000 to 3,000 pounds. The system maintains a constant buoyancy during ascent by venting the expanding air volume out under the slider of a zipper, which is attached to the side of the bag along the vertical direction. A diver-operated air wand is used to compensate for compression of the air volume during descent. The system is easy to maintain, and most repairs can be performed by the users in the field. This report documents the development, test, and evaluation of the engineering model systems. Lift system, Open-bottom lift bags, Dump valve, Air- filled valve, Air-filled wand

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1993
Accession Number
ADA265586

Entities

People

  • Hugh G. Thomson

Organizations

  • Naval Facilities Engineering Service Center

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Alkanes
  • Buoyancy
  • Civil Engineering
  • Construction
  • Control Systems
  • Engineering
  • Environment
  • Environmental Protection
  • Laboratory Tests
  • Materials
  • Measurement
  • Pressure Gages
  • Test And Evaluation
  • Test Facilities
  • Test Fixtures
  • Underwater Construction

Fields of Study

  • Engineering

Readers

  • Electrical Engineering
  • Inertial Navigation Systems.
  • Materials Science