HHCs as it applies to end use applications of acrolein.

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, 1993

Mr. David W. Spencer
Baker Performance Chemicals, Incorporated
3920 Essex Lane
Houston, Texas 77027-7714

Dear Mr. Spencer:

HHCs as it applies to strategic petroleum reserve storage sites.

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 14, 1993

Mr. Paul J. Plaisance, Jr.
Director
Office of Technical Management
Petroleum Reserve
Department of Energy
Washington, DC 20585

Dear Mr. Plaisance:

Applicability of the Process Safety Management manufacturing processes involving workplace explosives.

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 30, 1993

Mr. L. Dave McLean
Strategic Operations
Thiokol Corporation
P.O. Box 689-M/S DOO
Brigham City, Utah 84302

Dear Mr. McLean:

HHCs as it applies to ethylene oxide (ETO).

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 30, 1993

Mr. J. A. Dzwierzynski
Director of Engineering
ISOMEDIX
11 Apollo Drive
Whippany, N.J. 07981

Dear Mr. Dzwierzynski:

HHCs as it applies to manufacturing processes involving workplace explosives.

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 30, 1993

Mr. G. W. Lancour, Director
Safety, Health and Environmental Affairs - MDC
McDonnell Douglas Corporation
P.O. Box 516
St. Louis, MO 63166-0516

Dear Mr. Lancour:

Inspection of chemical accidents.

Archive Notice - OSHA Archive

NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.

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 14, 1992

Mr. Ching-Yeh Shiau, Ph.D. Professor,
National Taiwan Institute of Technology
Department of Chemical Engineering
43 Keeling Road, Section 4
Taipei, 10772,
Taiwan Republic of China

Dear Mr. Shiau:

Thank you for your letter of February 29 requesting information related to Occupational Safety and Health Administration (OSHA) inspection of chemical accidents. Please accept our apologies for the delay in responding.

HHC standard as it applies to threshold quantity.

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 1, 1994

Mr. Chris Kuiper
President
Environmental Health and Safety Inc.
6093 S. Quebec Street, Suite 203
Englewood, Colorado 80111

Dear Mr. Kuiper:

This is in response to your February 16 letter, requesting interpretation of the Process Safety Management (PSM) of Highly Hazardous Chemicals standard, 29 CFR 1910.119. Please accept our apology for the delay in responding. Your questions and our replies follow.

Question 1:

Highly Hazardous Chemicals applies to aqueous solutions of Hydrogen Fluoride.

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 28, 1994

Mr. Gerald W. Lancour, Director
Safety, Health & Environmental Affairs
McDonnell Douglas
P.O. Box 516
Saint Louis, MO 63166-0546

Dear Mr. Lancour:

This is in response to your letter of October 1, requesting interpretation of the Process Safety Management (PSM) of Highly Hazardous Chemicals, 29 CFR 1910.119 standard. Specifically you requested clarification as to whether the PSM standard applies to aqueous solutions of Hydrogen Fluoride.

Highly Hazardous Chemicals as it applies to "Dowtherm".

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 26, 1994

Mr. Rashid Hamsayeh, C.S.P.
Corporate Safety Specialist
Formosa Plastic Corporation, USA
9 Peach Tree Hill Road
Livingston, New Jersey 07039

Dear Mr. Hamsayeh:

Final rule on process safety management of highly hazardous chemicals, formaldehyde

Archive Notice - OSHA Archive

NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.

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 28, 1992

Mr. Cary Franklin
Senior Process/Project Engineer
Georgia Pacific Resins, Inc.
2883 Miller Road
Decatur, Georgia 30035

Dear Mr. Franklin:

This is in response to your letter of June 24, regarding the Final Rule on Process Safety Management (PSM) of Highly Hazardous Chemicals published in Volume 57, Number 36 of the Federal Register on Monday, February 24, 1992.