To view this as a web page, click here

 

 
 
 
 
 


10/12/2020
Published Weekly by Grain Journal
Edited by Grainnet Editor Kendall Trump
GRAINNET

Published Every Monday by Grain Journal

 

Fall Arrest - Total Fall Distance


It is important to calculate total fall distance before using a personal fall arrest system. If this calculation is not performed correctly, a worker may come in contact with dangerous equipment or a lower level.

Total Fall Distance Calculation - Energy-Absorbing Lanyard

Consider a 6-foot-tall worker using a 6-foot energy-absorbing lanyard with 3-1/2 feet of deceleration distance and a safety factor of 3 feet. The lanyard is connected to a fixed anchor point.

To calculate total fall distance, add the following:

  • Height of worker - 6 feet
  • Free-fall distance - 6 feet
  • Connector/lanyard deceleration distance - 3-1/2 feet
  • Safety factor - 3 feet

Total fall distance = 18-1/2 feet

To safely arrest the fall and prevent the worker from contacting the lower level, the anchorage point must be at least 18-1/2 feet above the lower level.

Total Fall Distance Calculation - Self-Retracting Lifeline (SRL)

Consider a 6-foot-tall worker using an SRL and a safety factor of 3 feet. The SRL is connected to a fixed anchor point.

To calculate total fall distance, add the following:

  • Height of worker - 6 feet
  • Free-fall distance - 2 feet
  • Deceleration distance - 3-1/2 feet
  • Safety factor - 3 feet

Total fall distance = 14 1/2 feet

To safely arrest the fall and prevent the worker from contacting the lower level, the anchorage point must be at least 14-1/2 feet above the lower level.


fall-distance-larger.jpg#asset:214622



Source: Joe Mlynek is president of Progressive Safety Services LLC, Gates Mills, OH: joe.mlynek@progressivesafety.us, and content creation expert for Safety Made Simple, Inc., Olathe, KS; joe@safetymadesimple.com


 
 

 

Follow Us on Twitter

Receive Our Safety Enews Twice a Month

 

This Safety Alert was published by Grain Journal, Decatur, IL

800-728-7511 | website: www.grainnet.com