1 / 8

NIOSH Lifting Guidelines

NIOSH Lifting Guidelines. Easy to Apply and Widely Used Guideline Requires No Special Equipment Evaluates Two-Handed Lifting or Lowering Only Assumes Worker is Not in Restricted Work Space Does Not Apply to Seated or Kneeling Workers. Required Inputs.

calista
Download Presentation

NIOSH Lifting Guidelines

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. NIOSH Lifting Guidelines • Easy to Apply and Widely Used Guideline • Requires No Special Equipment • Evaluates Two-Handed Lifting or Lowering Only • Assumes Worker is Not in Restricted Work Space • Does Not Apply to Seated or Kneeling Workers

  2. Required Inputs • Horizontal Distance From Load to Low Back • Vertical Location of Load at Beginning and End of Lift • Degrees from the Midline at Which the Load is Located at Beginning and End of Lift • Frequency of Lifting in Lifts Per Minute • The Duration of the Task • The Quality (or Lack of) Handles or Hand-holds • The Load Weight

  3. Calculating RWL • RWL = LC x HM x VM x DM x AM x FM x CM • Calculate RWL for Both Origin and Destination of Lift • Compare RWL-Origin to RWL-Destination and Use the Lesser (More Protective) Value

  4. The Lifting Index • Lifting Index (LI) = Load/RWL • Lifting Index of 1.00 or less is acceptable • Lifting Index of Greater than 1.00 up to 3.00 Indicates Need for Task and/or Administrative Changes • Lifting Index of Greater than 3.00 Unacceptably Hazardous - Engineering Changes Required

  5. Performing NIOSH Lifting Evaluations • Collecting Good Input Data is One of the Analyst’s Primary Tasks • Machines Can Perform the Calculations (computer, calculator, etc.) • Interpreting the Results and Identifying Solutions are the Most Crucial Steps in the Process

  6. NIOSH Lifting Evaluations are Important • Provide Objective Evaluations of Lifting Tasks • Is Widely Accepted and Respected as Valid • Are Quick and Easy to Perform, Especially With Software • Provide a Baseline To Compare Against Any Changes

  7. Example - Estimating Inputs • Task: Pick up 25 lb crate of apples and place on a 35 inch shelf • Handle locations are 6 inches from bottom of crate • Crate is 30 inches long and 14 inches wide • Crate had cut-out handles • Task is performed infrequently (less than once every five minutes) • Asymmetry is 15 degrees at both origin and destination • Task duration is 1 hour

  8. Example Task - Measuring Inputs • Measure horizontal distance (H1) and vertical distance (V1) at the origin of lift • Estimate asymmetry at origin (A1) • Measure horizontal distance (H2) and vertical distance (V2) at the destination of lift • Estimate asymmetry at destination (A2) • Select hand-hold category (good, fair, or poor) • Count the number of lifts in a given time frame, and convert to lifts per minute • Select the duration of the task: 1 hr, 2 hr, or 8 hr

More Related