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GME Supply is North America's Premier Outfitter of fall protection, safety equipment, and gear for at-height workers, industry, and construction.

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SRL ANSI Classes

The Sky's the limitAn SRL, or Self-Retracting Lifeline is a device that contains a spring-loaded retracting web or cable lanyard wound around an internal drum. This device automatically locks and arrests the fall of a worker. SRLs come in a range of different shapes and sizes. There are also a range of types available for different environments and mounting styles. However, there is one thing that all SRLs used on a job site have in common: ANSI Class ratings. This week our Gear Experts® have put together a guide outlining the ANSI SRL Classes.

ANSI Classes


  ANSI Z359.14-2014 classifies SRLs into two classes. Those classes are Class A and Class B. The main differentiators between the two classes are stopping distance and arresting forces.

Class A:


  In order for an SRL to be Class A it must meet the following requirements: → Have a maximum arresting distance that does not exceed 24 inches. → Have an arresting force that does not exceed 1,350 pounds (6 kN) → Have a maximum peak force of 1,800 pounds (8 kN) → After environmental conditioning (hot, cold, or wet) the average arresting force must not exceed 1,575 pounds (7 kN) → After environmental conditioning (hot, cold, or wet) the maximum peak force must not exceed 1,800 pounds (8 kN)

Class B:


  In order for an SRL to be Class B it must meet the following requirements: → Have a maximum arresting distance that does not exceed 54 inches. → Have an arresting force that does not exceed 900 pounds (4 kN) → Have a maximum peak force of 1,800 pounds (8 kN) → After environmental conditioning (hot, cold, or wet) the average arresting force must not exceed 1,125 pounds (5 kN) → After environmental conditioning (hot, cold, or wet) the maximum peak force must not exceed 1,800 pounds (8 kN)

Comparison:


  Each of these devices has benefits based on the jobsite and working conditions. As you can see above a Class A device will stop your fall faster, but with more forces applied to the body. Class B devices, on the other hand, will take longer to arrest the fall, but will reduce the g-forces significantly. Which device you should use depends on your environment. If you have plenty of fall clearance below you, then a Class B device could be the perfect fit. However, if you are working in close quarters and don’t have that extra fall clearance, then you will need a Class A device. For more information about SRL Classes click here to visit our knowledge base.

ANSI SRL Classes Defined: Video


 

**The content of this blog is not intended to replace proper, in-depth training. Manufacturer’s instructions must also be followed and reviewed before any fall protection equipment is used. → Click here to see our full selection of SRLs

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