Propane pre-heaters used to pre-heat steel in field construction.

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

December 10, 1979

Mr. E.M. Shoemate
Corporate Safety - Houston
Chicago Bridge & Iron Company 8900 Fairbanks North Houston Road
P.O. Box 40066
Houston, Texas 77040

Dear Mr. Shoemate:

This is in response to your recent inquiry and telephone communication with a member of my staff requesting clarification of appropriate requirements for propane pre-heaters used to pre-heat steel in field construction.

Clarification of 29 CFR 1926.350(b)(4) to Permit Cylinders Containing Oxygen, Acetylene or Other Fuel Gas to be Taken into Tunnels

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

July 7, 1975

Transportation of compressed gas chambers

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

May 5, 1992

Mr. George Brown, P.E. Director,
Corporate Safety/Risk Management
Obayashi Corporation
345 Allerton Avenue South
San Francisco, California 94080

Dear Mr. Brown:

This is in response to your January 30 letter requesting an interpretation of Occupational Safety and Health Administration (OSHA) requirements addressing the transportation of compressed gas cylinders. I apologize for the delay in responding to you.

The handling, storing, and using of Methylacetylene- Prepadiene, Stabilized (MPS) gas in below ground-level construction work.

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

June 3, 1976

Mr. Roy T. Dodge
Chief of Design
and Construction
Washington Metropolitan
Area Transit Authority
600 Fifth Street, N.W.
Washington, D.C. 20001

Dear Mr. Dodge:

This is in response to your letter of May 13, 1976 (copy enclosed), regarding the conclusion reached at our meeting of May 6, 1976, on the handling, storing, and using of Methlacetylene- Propadiene, Stabilized (MPS) gas in below ground-level construction work.

Methylacetylene-propadiene, stabilized, by definition, is not a liquefied petroleum gas, but is considered as a fuel gas

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

April 16, 1976

Mr. Richard D. Green
Application & Development Manager
MAPP Products
P.O. Box 105
Springfield, New Jersey 07081

Dear Mr. Green:

This is in response to your letter of March 31, 1976, regarding a clarification of 29 CFR 1926.350 and 29 CFR 1926.800 as they apply to MAPP gas, trade name for methlacetylene-propadiene, stabilized (MPS).

Gas cylinder carts with patented engineered steel fire barriers compliance with 1926.350(a)(10).

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

January 23, 2004

Frank S. Salvucci, Jr.
Anthony Welded Products, Inc.
1447 S. Lexington Avenue
P.O. Box 1462
Delano, CA 93216-1462

Re: Gas cylinders; §1926.350(a)(10); storage; engineered steel firewalls

Dear Mr. Salvucci:

Requirement and design of fire-resistant barriers for oxygen and fuel-gas cylinders.

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

March 4, 2004

Mr. John D. Evans
Vice President Engineering
The Knapheide Manufacturing Company
1848 Westphalia Strasse
P.O. Box 7140
Quincy, Illinois 62305-7140

Dear Mr. Evans:

This is in response to your letter dated August 7, 2003, to the Occupational Safety and Health Administration (OSHA) concerning §1926.350(a)(10). You indicate that you propose to design a container with a fire-resistant barrier that will comply with the above standard.

Removal of regulators and use of valve protection caps when hoisting compressed gas cylinders

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

March 30, 2004

Mr. Chris Smith
Via E-mail

Re: 29 CFR 1926.350(a)(6); hoisting compressed gas cylinders on a wheeled cart.

Dear Mr. Smith:

This is in response to your e-mail submitted March 2, 2004, to the Occupational Safety and Health Administration (OSHA). You ask for an interpretation of §1926.350, Gas Welding and Cutting.

We have paraphrased your question as follows:

29 CFR 1926.350(a)(7), securing compressed gas cylinders - rational for and hazards addressed by the requirement.

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

January 19, 2005

Mr. Richard Johnston
Hausmann Johnson Insurance, Inc.
700 Regent Street
P.O. Box 259408
Madison, WI 53725-9408

Re: 29 CFR 1926.350(a)(7); securing compressed gas cylinders.

Dear Mr. Johnston:

This is in response to your letter dated October 18, 2004, to the Occupational Safety and Health Administration (OSHA). You asked for our opinion on the rationale for and hazard addressed by the construction standards for securing compressed gas cylinders.