Technical Evaluation of Diver-Held Power Tools.

Abstract

Pneumatic and hydraulic hand-held power tools were evaluated by divers performing realistic underwater tasks. These tasks included drilling steel and aluminum, nut running and tightening, grinding metal, and chain sawing wood. An on-the-site observer monitored diver performance time for each task. Diver skill in effective tool utilization is very important in working underwater. At test depths to 60 feet, hydraulic tools were very effective and practical, while pneumatic tools, although effective, required excessive maintenance. At greater depths, hydraulic tools retain their effectiveness, but pneumatic tools lose effectiveness because of the compressibility of gas. Hydraulic tools generally supply more energy per unit of tool weight than do pneumatic tools; thus, the diver can perform work more rapidly using hydraulic tools.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1971
Accession Number
AD0726161

Entities

People

  • F. B. Barrett
  • Sarah Black

Organizations

  • Naval Facilities Engineering Service Center

Tags

Communities of Interest

  • Energy and Power Technologies
  • Human Systems

DTIC Thesaurus Topics

  • Aluminum
  • Civil Engineering
  • Divers
  • Drilling
  • Engineering
  • Grinding Wheels
  • Maintenance
  • Materials
  • Metals
  • Observers
  • Power Supplies
  • Power Tools
  • Test And Evaluation
  • Test Depths
  • Test Equipment
  • Test Stands
  • Tools

Fields of Study

  • Engineering

Readers

  • Electrical Engineering
  • Instructional Design and Training Evaluation.
  • Manufacturing Engineering.