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Safety devices on compressed-air tool hoses

Summary A contractor asked which hoses were covered by the construction pneumatic tool rule. OSHA said hoses exceeding one-half inch inside diameter needed a safety device at the supply source or branch line that automatically cut airflow on rupture or disconnection. It said the cited provision applied only to pneumatic power tools.
Document
Federal opinion letter
Agency
Occupational Safety and Health Administration (OSHA)
Document number
1983-06-06
Date issued
June 6, 1983
Status
Active
Status last verified October 10, 2026

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June 6, 1983

Mr. Donald W. Johnson
Safety Director
McLean Contracting Company
General Contractors
[Recipient address omitted]
Dear Mr. Johnson:

This is in response to your letter of May 9, 1983, requesting a clarification of 29 CFR 1926.302(b)(7).

Our review of this matter reveals that 29 CFR 1926.302(b)(7) requires all hoses exceeding 1/2-inch inside diameter to have a safety device at the source of the supply or branch line to reduce pressure in case of hose failure. Safety device, as mentioned above, means a contrivance or device that will prevent injury or avert danger and will automatically cut off the flow of compressed air, if a hoseline ruptures or becomes disconnected. 29 CFR 1926.302(b)(7) applies only to pneumatic power tools.

Your letters and attachments have been forwarded to the Directorate of Safety Standards for their consideration in future standards development.

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

Sincerely,
Bruce Hillenbrand
Acting Director
Federal Compliance and State Programs

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