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Retracting-reel lifelines below the stated strength

Summary A manufacturer asked whether two retracting-reel lifelines met OSHA’s construction lifeline rule. OSHA said their 4,000- and 3,000-pound breaking strengths failed the 5,400-pound requirement. It also said automatic devices used to keep a free fall under six inches appeared to satisfy the intent of its protective-equipment requirements if they worked as tested.
Document
Federal opinion letter
Agency
Occupational Safety and Health Administration (OSHA)
Document number
1979-03-26
Date issued
March 26, 1979
Status
Active
Status last verified October 10, 2026

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March 26, 1979

John Nigel Ellis, Ph.D.
President
Research and Trading Corporation
[Recipient address omitted]
Dear Dr. Ellis:

This is in response to your recent request for an official interpretation of the intent of 29 CFR 1926.104. You have also requested that this office evaluate your Evalok products against the above standard and any applicable general industry standards. This National Office interpretation supersedes the Regional response dated February 28, 1979, concerning the same subject.

As indicated in your letter, the Evalok 30 rope break strength is approximately 4000 lbs. and the Evalok 50 cable break strength is approximately 3000 lbs. Both of the above lifelines fail to comply with the 5400 lbs. strength requirement contained in 29 CFR 1926.104. However, your retracting reel locking type system is more sophisticated, in that the disc brake attached to the lock acts to cushion a fall to less than six inches for a 350 lb. drop weight as verified by Pittsburgh Testing Laboratory reports.

Automatic fall protection devices such as the Evalok products, are not specifically regulated in our General Industry or Construction Standards. Employees using the Evalok products as automatic taut lifeline's installed to prevent a free fall of an employee to less than six inches appear to comply with the intent of OSHA's personal protective and life saving equipment requirements, provided the devices function at all times as indicated by the Pittsburgh Testing Laboratory reports.

A copy of this interpretation will be mailed to all OSHA Regional Administrators. The development of an Instruction to the OSHA field staff regarding personal lifelines of the retracting reel locking type as they apply to existing lifeline standards does not appear necessary at this time.

If I may be of any further assistance, please feel free to contact me.

Sincerely,
Bruce Hillenbrand
Acting Director
Federal Compliance
and State Programs

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