Investigation of the after-reach hazard in two-hand controlled power press operations.

Details

• Personal Author:
  Etherton, John R. ; Jensen RC ; Oppold JA ; Pizzatella, Timothy J.
• Description:
  The hand injury hazard to power press operators when reaching into the press die area after the downward motion of the press ram started (called after reach) was studied. One safeguard designed to prevent the after reach hazard was to incorporate a two hand actuator control that required pressure from both hands to maintain the motion of the press ram. In this study, a model power press was used to simulate the operation of a power press. The subjects performed simulated work cycles, including a random after reach condition in which subjects were to reach from the actuator controls into the press die area to reposition a work blank. The work blank was dislodged at random intervals by an air valve controlled by an observer who could not be seen by the subject. The after reach time was then measured, and average hand speed calculated. The experiments were performed with the actuator controls in two different positions, an upper and a lower location. The overall mean hand speed was 13.2 meters/second for the upper control position and 0.94 meters/second for the lower position. The authors conclude that the location of the actuator controls has a significant effect on average hand reach speed. More research is needed to define and characterize the additional factors involved in after reach conditions. [Description provided by NIOSH]
• Subjects:
  Manufacturing And Industrial Facilities Musculoskeletal System Occupational Health Safety
• Keywords:
  After-reach Time Author Keywords: Actuator Location Hand-injuries Hand-reach Speed Industrial-hazards Machine-operation Machine-operators NIOSH-Author Point Of Operation Safety-engineering Simulated Press Simulation-methods Two-hand Actuator

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• ISSN:
  0355-3140
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DSR - Division of Safety Research
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  194-200
• Volume:
  9
• Issue:
  2
• NIOSHTIC Number:
  nn:00185063
• Citation:
  Scand J Work Environ Health 1983 Apr; 9(2):194-200
• Contact Point Address:
  Mr TJ Pizatella, National Institute for Occupational Safety and Health, 944 Chestnut Ridge Road, Morgantown, WV The to 26505, USA
• Federal Fiscal Year:
  1983
• Peer Reviewed:
  True
• Source Full Name:
  Scandinavian Journal of Work, Environment & Health
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:777092e49b45a820ac85d90d805d4607ec7afff99a90d9ad76e6dcd1fe9621d577d310fd2b8936a221d2ff3ec11bee0e7613299ebe6739e6e8dc008afe532086
• Download URL:
  https://stacks.cdc.gov/view/cdc/185695/cdc_185695_DS1.pdf
• File Type:
  [PDF - 536.50 KB ]