1 / 9

Developing a Method for the Design and Evaluation of Manual Lifting Tasks

Developing a Method for the Design and Evaluation of Manual Lifting Tasks. National Institute for Occupational Safety and Health (NIOSH). 1981 committee met to recommend criteria for defining lifting capacity evaluate lifting demands . NIOSH Lifting Equation. Criteria: 1. Biomechanical

dieter
Download Presentation

Developing a Method for the Design and Evaluation of Manual Lifting Tasks

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Developing a Method for the Design and Evaluation of Manual Lifting Tasks

  2. National Institute for Occupational Safety and Health (NIOSH) • 1981 • committee met to recommend criteria for defining lifting capacity • evaluate lifting demands

  3. NIOSH Lifting Equation Criteria: 1. Biomechanical - loading of the spine 2. Physiological - energy expenditure 3. Psychophysical - capacity to lift

  4. NIOSH Lifting Equation Goal: • Identify ergonomic solutions for reducing physical stresses • 1991 revised version

  5. Activity • Keeping in mind the goal (and criteria) of the NIOSH committee • Identify features/factors of a lifting task that contribute the most to the hazard of low back injuries

  6. Revised NIOSH Lifting Equation (1991) • Lifting equation for calculating the Recommended Weight Limit (RWL) • represents a load nearly all healthy workers could perform (up to 8 hrs.) w/o  risk of developing lifting-related LBP

  7. RWL RWL = LC x HM x VM x DM x AM x FM x CM • LC = 51 lbs. • HM = horizontal (initial horizontal position) • VM = vertical (initial vertical position) • DM = distance (total vertical distance moved) • AM = asymmetric • FM = frequency • CM = coupling

  8. RWL RWL = LC x HM x VM x DM x AM x FM x CM • LC = 51 lbs. • HM = 10/H • VM = 1 - (.0075|V - 30|) • DM = 0.82 - (1.8/D) • AM = 1 - (.0032 * A) • FM = Table • CM = Table

  9. Lifting Index (LI) • Ratio or comparison between actual weight lifted (L) and RWL • LI = Load Weight / RWL • Relative index of physical stress

More Related