Evaluating Hazardous Levels of Accumulation Depth for Combustible Dusts

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 21, 2015

MEMORANDUM FOR:
REGIONAL ADMINISTRATORS
THROUGH:
DOROTHY DOUGHERTY
Deputy Assistant Secretary
FROM:
THOMAS GALASSI, Director
Directorate of Enforcement Programs
SUBJECT:
Evaluating Hazardous Levels of Accumulation Depth for Combustible Dusts

 

Standard applicable to control of dust explosions in powdered milk production.

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 12, 1985

Ms. Inge Lundstrom
National Board of Occupational Safety
and Health
Chemistry Section 3
S-171 54
Ekelundsvagen 16
Solna, Sweden

Dear Ms. Lundstrom:

This is in response to your letter of February 18, addressed to the Assistant Secretary for Occupational Safety and Health.

Requirements that emergency lighting be provided in the OSHA standards.

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NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.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

January 29, 1975

Mr. E. E. Anderson,
Safety Assistant
U. S. Post Office,
Safety Section
San Antonio, TX 78284

Dear Mr. Anderson:

In regard to your request forwarded this office, I offer the following comments as related to private employer responsibility under the Occupational Safety and Health Act of 1970.

Aisles and Passageways.

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.

Date: February 14, 1977

MEMORANDUM FOR:
Donald E. MacKenzie, Acting Director
Office of Field Coordination and Experimental Programs
SUBJECT:
29 CFR 1910.22(b)(2), Aisles and Passageways
ATTENTION:
Maureen Kelleher
REFERENCES:
Hal Bingham

This is in response to your inquiry concerning issuance of citations where there are no painted markings of permanent aisles and passageways for dirt floors or floors covered with sand or dust.

Wet floors due to weather conditions or the entry of vehicles containing melting snow.

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 6, 1994

Mr. Stuart Flatow
Occupational Health Specialist
2200 Mill Road
Alexandria, Virginia 22314-4677

Dear Mr. Flatow:

Thank you for your letter of January 31, requesting an interpretation of the Occupational Safety and Health Administration (OSHA) standard at 29 CFR 1910.22(a)(2). Specifically, you asked if wet floors due to weather conditions or the entry of vehicles containing melting snow would be subject to 1910.22(a)(2). We apologize for the delay in our response.

Standard applicable to two point suspension scaffolds and power platforms used in window cleaning and to hazards in refrigeration plants.

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 16, 1985

Mr. Arnold Lever
Finda's Hotel
84 Bury Old Road
Cheethem
Manchester 8
England

Dear Mr. Lever:

Thank you for your letter of July 1 to the Assistant Secretary for Occupational Safety and Health (OSHA) regarding safety standards for window cleaners and workers in refridgeration plants.

Requirements that all walking and working surfaces be kept clean, orderly, and in a sanitary condition.

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.

October 26, 1982

Honorable Dan Rostenkowski
House of Representatives
Washington, DC 2051

Dear Congressman Rostenkowski:

Thank you for your letter of September 17, 1982, to Mr. Robert C. Wetherell, Jr, of the Food and Drug Administration (FDA). Mr. Wetherell forwarded your inquiry on behalf of Mrs. Theresa Wolverton of Chicago, Illinois for response.

Definition of a "floor," "building official," and "plates of approved design."

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.

April 3, 1996

[Name Withheld]

Dear [Name Withheld]:

This is in response to your letter of February 5, in which you asked the following questions:

Question 1. What constitutes a "floor"? If I have a flat, solid concrete slab that is laid (poured) directly on ground (earth), does that constitute a "floor" as referenced in the standard?

Permanent Places of Employment

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 10, 2014

Chip Darius, OHST, CET, CSHO
President
Safety Priority
110 Court Street
Suite 1
Cromwell, CT 06416-1273

Dear Mr. Darius:

Thank you for your letter dated January 22, 2014, to the Occupational Safety and Health Administration (OSHA) for a clarification of OSHA’s definition of permanent place of employment. This constitutes OSHA's interpretation only of the requirements discussed and may not be applicable to any question not delineated within your original correspondence.