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Inspection standards for below-the-hook lifting devices and slings

Summary A lifting-device supplier asked which inspection reference OSHA used for below-the-hook devices and whether engine carriers counted as slings. OSHA said it referred to ANSI/ASME B30.20 for device inspections, while its separate sling rule covered specified sling materials rather than structural and mechanical lifting devices.
Document
Federal opinion letter
Agency
Occupational Safety and Health Administration (OSHA)
Document number
1998-10-01-0
Date issued
October 1, 1998
Status
Active
Status last verified October 9, 2026

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October 1, 1998

Mr. David A. Hoy
President
Technical Loadarm LTD
Dear Mr. Hoy:

This is in response to your letter of August 13, requesting compliance assistance from the Occupational Safety and Health Administration (OSHA) regarding ANSI/ASME B30.20-Below-the-Hook Lifting Devices.

With regard to whether OSHA recognizes ANSI/ASME B30.20 specifications as the reference point for determining inspections for Below-the-Hook Lifting Devices, please be advised that the answer is yes. OSHA refers to the subject consensus standard for inspection provisions for Below-the-Hook Lifting Devices.

With regard to whether assembly line engine carriers/bridles considered Below-the-Hook Lifting Devices are similar to slings referenced in 29 CFR 1910.184, please be advised that the answer is no. ANSI/ASME B30.20, applies to structural and mechanical lifting devices. 1910.184 applies to slings made from alloy steel chain, wire rope, metal mesh, natural or synthetic fiber rope (conventional three strand construction), and synthetic web (nylon, polyester, and polypropylene).

We appreciate your interest in occupational safety and health. If we can be of further assistance, please contact Wil Epps of my staff at (202) 219-8041.

Sincerely,

Richard Fairfax, Acting Director
Directorate of Compliance Programs

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