Talk to an Expert

Class 1 V. Class 2 SRL’s (Self Retracting Lifelines) Explained

dev-admin

What is ANSI and Why It Matters for Fall Protection Compliance

The American National Standards Institute (ANSI), a private, non-profit organization, has been setting industry standards since 1918. ANSI plays a crucial role in developing and promoting consensus standards across various sectors. While ANSI standards are technically voluntary, many—such as the ANSI Z359 series—government bodies like Cal/OSHA enforce them. Therefore, staying compliant with these standards is crucial for maintaining safety and meeting regulatory requirements.

Key Changes in ANSI/ASSP Z359.14-2021

The recent revision of ANSI/ASSP Z359.14-2021 introduces several significant updates for Self-Retracting Lifelines (SRLs). Below is a breakdown of the key changes:

  1. Updated SRL Classes

Class A and Class B SRLs have been replaced with Class 1 and Class 2 SRLs:

  • Class 1 SRLs must anchor at or above the user’s back or dorsal D-ring.
  • Class 2 SRLs can anchor above, at, or even below the user’s back or dorsal D-ring. Leading Edge (LE) SRLs fall under Class 2.

The new classification system also identifies SRL types based on their function:

  • Class 2 Type SRL-P: Personal SRLs that attach directly to the harness and can anchor at, above, or below the back D-ring.
  • Class 1 Type SRL-P: Another personal SRL, but it can only attach above or at the back D-ring.

Understanding the specific application of your SRL is essential, so make sure it aligns with the correct class and type.

  1. New SRL Types and Requirements

The updated standard also defines several SRL types:

  • SRL-P: Personal SRL, as outlined above.
  • SRL-R: SRLs with built-in retrieval or rescue capabilities.
  • Standard Overhead SRLs: These will always be Class 1.
  • Leading Edge SRLs: These will always be Class 2.

You must choose the correct SRL type for your specific needs to ensure safety and compliance.

  1. Changes in Performance Standards

The new revision introduces several key performance updates:

  • Maximum Deceleration Distance: Both SRL classes must stop a fall within a uniform maximum deceleration distance of 42 inches.
  • Labeling Requirements: SRLs must clearly display their class and include a fall clearance table.
  • Warning Information: SRLs must provide clear warnings, particularly about using Class 2 devices in Leading Edge applications.
  • Increased Average Arresting Force (AAF): The allowed AAF has risen from 900 pounds (4 kN) to 1,350 pounds (6 kN). As a result, anchorage systems require higher design ratings:
    • An anchorage designed with a safety factor of two at an AAF of 900 pounds has a rating of 1,800 pounds. For SRLs with the new AAF of 1,350 pounds, the design rating must increase to 2,700 pounds.

This increase in AAF highlights the importance of reviewing and upgrading your anchorage systems to meet these new standards.

Need Help with Compliance?

If you have questions about the new ANSI/ASSP Z359.14-2021 standards or need assistance assessing your current fall protection system’s compliance, contact us. We’re here to help you navigate these changes and ensure your systems meet the updated requirements. The full ANSI/ASSP Z359.14-2021 can be purchased on their site.