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# Standard Interpretations
1 2014 - 05/02/2014 - Boundaries of a PSM-Covered Process that Includes the Storage of Cylinders of HHCs (Anhydrous Hydrogen Fluoride)
2 2013 - 02/04/2013 - Clarification of the term "hydrocarbon" as used in the PSM standard.
3 2013 - 02/04/2013 - Training requirements for mechanics repairing and/or testing pressure relief devices.
4 2012 - 12/04/2012 - Is reassembly of a cylinder valve a mechanical integrity activity?
5 2012 - 04/24/2012 - Numerous questions related to OSHA's notice to terminate the rulemaking to amend the explosives standard.
6 2012 - 03/19/2012 - PSM and large batch-mixing tanks
7 2012 - 03/05/2012 - PSM for pharmaceutical plant
8 2011 - 03/31/2011 - Flame-resistant and flame-retardant treated clothing for oil and gas well drilling, servicing, and production-related operations.
9 2010 - 10/19/2010 - Clarification of term "Active Hydrocarbon Zone" as it relates to the oil and gas well drilling operations; and the need to use FRC when performing drilling operations.
10 2010 - 02/01/2010 - "Applicability of the PSM standard's mechanical intergrity requirements to refinery structures."
11 2009 - 05/21/2009 - Determining when a mixture would exceed the threshold quantity in a covered process.
12 2009 - 03/31/2009 - Management of Organizational Change
13 2008 - 10/07/2008 - Extent of OSHA's jurisdiction over worksites involving geological and underground storage facilities for gas and hazardous liquids.
14 2008 - 01/31/2008 - PSM coverage of utility systems; whether 1910.269 preempts the PSM standard for power generation facilities that serve covered processes.
15 2006 - 07/17/2006 - Pressure vessels used at oil and gas extraction/production facilities and applicability of 29 CFR 1910.106.
16 2006 - 07/12/2006 - PSM compliance for ammonia refrigeration systems.
17 2006 - 03/07/2006 - Requirement for flame-resistant clothing in petrochemical plant covered by PSM.
18 2005 - 12/12/2005 - Clarification of the retail facilities exemption under the PSM standard.
19 2005 - 11/29/2005 - Use of ANSI/ISA S84.00.01-2004 Parts 1-3 (IEC 61511 MOD) to comply with OSHA's Process Safety Management standard.
20 2005 - 02/16/2005 - Evaluation of scenarios regarding PSM requirements related to normally unoccupied remote facilities and natural gas processing plants (gas plant).
21 2005 - 02/01/2005 - Documentation methods used to comply with the qualitative evaluation of a range of possible safety/health effects of "failure of controls" requirement of the PSM standard.
22 2003 - 12/22/2003 - Process safety information for ventilation system design.
23 2003 - 03/14/2003 - OSHA enforcement policy of the PSM standard distilleries and related facilities in SIC 2085.
24 2003 - 02/11/2003 - Clarification of PSM applicability to processes that are based partly or solely on quantities in connected atmospheric storage tanks.
25 2002 - 02/01/2002 - PSM applicability to warehousing flammable liquids and other HHCs.
26 1999 - 07/09/1999 - Applicability of the PSM standard to a flammable liquid manufacturing process.
27 1998 - 12/09/1998 - PSM standard coverage of liquefied natural gas (LNG) facilities.
28 1998 - 02/04/1998 - Applicability of PSM standard to explosive and pyrotechnic manufacturing.
29 1997 - 12/12/1997 - Electrical hazardous area classification drawings in the workplace.
30 1997 - 06/30/1997 - Sodium Azide as Used in the Manufacturing Process of Automobile Air Bags.
31 1997 - 05/16/1997 - 1910.119 does not apply to public displays of flame effects.
32 1997 - 04/29/1997 - The Process Safety Management Standard.
33 1997 - 02/28/1997 - Akzo-Nobel Chemicals - Limits of a Process
34 1996 - 11/19/1996 - Response regarding the application of the OSHA Process Safety Management Standard to utility LPG distribution facilities.
35 1996 - 10/31/1996 - Process Safety Management of Highly Hazardous Chemicals and process hazard analyses.
36 1996 - 09/16/1996 - Clarification on the documentation of inspections and tests required under the mechanical integrity provisions.
37 1996 - 09/11/1996 - Voluntary safety and health audits under the Occupational Safety and Health Act.
38 1996 - 08/16/1996 - Process Safety Management of highly hazardous chemicals standard.
39 1996 - 05/15/1996 - Worker protection for employees incinerating hazardous waste on cement plant property.
40 1996 - 01/29/1996 - Process Safety Management regulations and directives.
41 1996 - 01/11/1996 - Process safety management at what point a work site change would no longer be considered a modification but a new facility.
42 1995 - 12/07/1995 - OSHA's Standard Process Safety Management of Highly Hazardous Chemicals.
43 1995 - 11/28/1995 - Carburization process and the applicability of Process Safety Management for Highly Hazardous Chemicals.
44 1995 - 11/27/1995 - Challenge Testing as a Substitute for Annual Refresher Training.
45 1995 - 10/25/1995 - The (PSM) for Highly Hazardous Chemicals Standard and its applicability to the specific scenarios outlined.
46 1995 - 10/12/1995 - Clarification on whether the ozone process described is covered by the PSM Standard.
47 1995 - 09/27/1995 - Interpretation of the Process Safety Management of Highly Hazardous Chemicals Standard.
48 1995 - 09/25/1995 - Clarification of the Process Safety Management standard with regard to material and energy balances.
49 1995 - 09/14/1995 - The term "interconnection" as it would apply to utilities, steam and electric, used in a covered process.
50 1995 - 09/14/1995 - Three scenarios and questions regarding on-site natural gas in pipe lines used as a fuel and as a feed stock.
51 1995 - 09/11/1995 - Storage of flammable liquids and the applicability to the Process Safety Management standard.
52 1995 - 09/07/1995 - The Ciba Self-Medication, Inc. (CSM) facility and the application of OSHA's PSM of Highly Hazardous Chemicals Standard.
53 1995 - 08/15/1995 - Chlorine storage facility plan and the applicability of the Process Safety Management (PSM) of Highly Hazardous Chemicals Standard.
54 1995 - 07/28/1995 - Heat-treating process (using methanol) and the applicability of the Process Safety Management of Highly Hazardous Chemicals Standard.
55 1995 - 07/26/1995 - OSHA's approval of the Zurich Hazard Analysis, as an appropriate method for conductiong the process hazard analysis which is required by 1910.119.
56 1995 - 06/01/1995 - Clarification on the time allowed for completion of the initial process hazard analysis (PHA) as it may apply to a hypothetical case involving four different work sites of an employer.
57 1995 - 05/17/1995 - Confirmation that mixing of liquefied butane, transferred by a CTMV, with gasoline stored in atmospheric tanks at terminals is not covered by the PSM Standard.
58 1995 - 03/22/1995 - Coverage under the Process Safety Management Standard.
59 1995 - 03/21/1995 - "Compliance Audits" of the Process Safety Management of Highly Hazardous Chemicals Standard.
60 1995 - 02/24/1995 - Regarding "Compliance Audits" of the Process Safety Management for Highly Hazardous Chemicals Standard.
61 1995 - 02/23/1995 - The use of natural gas or liquid propane gas used in an after-burner.
62 1995 - 02/22/1995 - Process Safety Management (PSM) of Highly Hazardous Chemicals standards, as it may apply to processes containing HHCs.
63 1995 - 02/13/1995 - Clarification on how OSHA would address the use of natural gas or liquid propane gas used in an after-burner to remove volatile organic carbon (VOC) air contaminants.
64 1995 - 02/06/1995 - Process Safety Management Program required by OSHA.
65 1995 - 01/23/1995 - Interpretation of the Process Safety Management of Highly Hazardous Chemicals Standard.
66 1995 - 01/05/1995 - Compliance Audits.
67 1994 - 12/02/1994 - Process Safety Management Standard.
68 1994 - 11/30/1994 - Process Safety Management of Highly Hazardous Chemicals.
69 1994 - 11/14/1994 - Interpretation of the Process Safety Management (PSM) of Highly Hazardous Chemicals (HHCs) standard.
70 1994 - 11/07/1994 - Requesting interpretation of the Process Safety Management Standard of Highly Hazardous Chemicals Standard.
71 1994 - 10/04/1994 - PSM clarification on flammable lubrication in aerosol cans, to prevent foods from sticking to heated cookware.
72 1994 - 09/27/1994 - Clarification on whether flammable liquids used to mix (1) inks used in printing on aluminum foil and paper and (2) paint used in coating aluminum sheets are covered by the PSM standard.
73 1994 - 09/27/1994 - Process Safety Management of Highly Hazardous Chemicals as it may apply to more than 250 pounds thionyl chloride stored on your work site.
74 1994 - 08/19/1994 - PSM as it may apply to processes containing HHCs.
75 1994 - 07/18/1994 - OSHA's policy for inspections related to the Process Safety Management standard.
76 1994 - 07/18/1994 - Process Safety Management - Threshold quantity is determined on the amount of HHC in the process.
77 1994 - 07/11/1994 - The Process Safety Management (PSM) of Highly Hazardous Chemicals (HHC) standard.
78 1994 - 06/29/1994 - HHC's as it applies to employer obligation to obtain and evaluate information regarding the contract employer's safety performance and programs.
79 1994 - 06/24/1994 - Process Safety Management Standard (PSM) of Highly Hazardous Chemicals (HHCs) standard.
80 1994 - 06/22/1994 - HHC's as it applies to pulp and paper industry processes that contain chlorine dioxide.
81 1994 - 06/16/1994 - Clarifications of the OSHA standards 1910.109 and 1910.119.
82 1994 - 06/09/1994 - HHC's as it applies to hydrochloric acid, hydrofluoric acid, hydrogen sulfide, hydrogen cyanide.
83 1994 - 06/03/1994 - HHC's as it applies to exterior, interior tanks.
84 1994 - 06/02/1994 - Highly Hazardous Chemical's anhydrous ammonia (NH(3)).
85 1994 - 06/01/1994 - HHC standard as it applies to threshold quantity.
86 1994 - 05/25/1994 - Highly Hazardous Chemicals, types of hardware that see contact with explosives.
87 1994 - 05/18/1994 - Highly Hazardous Chemicals as it applies to aqueous solutions of hydrofluoric acid.
88 1994 - 04/28/1994 - Highly Hazardous Chemicals as it applies to what constitutes the boundaries of a process.
89 1994 - 04/22/1994 - Highly Hazardous Chemicals as it applies to threshold quantity (TQ) of HHCs.
90 1994 - 03/31/1994 - Highly Hazardous Chemicals standard, Tertiary Butyl Hydroperoxide (TBHP).
91 1994 - 03/21/1994 - Highly Hazardous Chemicals, hydrochloric acid.
92 1994 - 03/16/1994 - Highly Hazardous Chemicals as it applies to flammable liquid from a stationary tank.
93 1994 - 03/10/1994 - Highly Hazardous Chemicals as it applies to a covered process.
94 1994 - 03/09/1994 - Highly Hazardous Chemicals as it applies to operating procedures and certify on an annual basis.
95 1994 - 02/15/1994 - Remote distance, close proximity and other PSM questions.
96 1994 - 01/31/1994 - Highly Hazardous Chemicals as it applies to solid propellant rocket motors.
97 1994 - 01/28/1994 - Highly Hazardous Chemicals applies to aqueous solutions of Hydrogen Fluoride.
98 1994 - 01/26/1994 - Highly Hazardous Chemicals as it applies to "Dowtherm".
99 1993 - 12/30/1993 - Applicability of the Process Safety Management manufacturing processes involving workplace explosives.
100 1993 - 12/30/1993 - HHCs as it applies to ethylene oxide (ETO).
101 1993 - 12/30/1993 - HHCs as it applies to manufacturing processes involving workplace explosives.
102 1993 - 12/30/1993 - Processes involving workplace explosive.
103 1993 - 12/14/1993 - HHCs as it applies to strategic petroleum reserve storage sites.
104 1993 - 12/10/1993 - HHCs as it applies to end use applications of acrolein.
105 1993 - 09/29/1993 - Scheduling and prioritizing on a "worst-first" basis.
106 1993 - 09/20/1993 - Coating processes covered by the PSM standard.
107 1993 - 09/09/1993 - HHCs as it applies to Hydrogen Peroxide delivered from a tank truck.
108 1993 - 09/08/1993 - Delivery of hydrogen peroxide, 52% by weight or greater.
109 1993 - 08/19/1993 - HHCs as it applies to Hydrocarbon fuels used solely for workplace consumption.
110 1993 - 07/09/1993 - Dimethylamine and Anhydrous Dimethlamine and the PSM standard.
111 1993 - 06/24/1993 - Sulfuric acid and the PSM standard.
112 1993 - 06/22/1993 - PSM Chemicals, unless specified, commercial grades less than 99 percent purity.
113 1993 - 06/09/1993 - Black liquor recovery boilers, associated oil (or gas) auxiliary fuel burner systems and PSM.
114 1993 - 06/03/1993 - Deadlines for completion of process hazard analysis.
115 1993 - 05/28/1993 - Refresher training requirements.
116 1993 - 05/03/1993 - Fumigants used to control insects in food plants.
117 1993 - 04/28/1993 - HHC's as it applies to flammable liquid stored at a worksite.
118 1993 - 04/14/1993 - HHCs as it applies to how high must the percentage of a chemical be to require compliance.
119 1993 - 04/14/1993 - Propane as a fuel for ovens; Chlorine storage exceeding 1500 pounds.
120 1993 - 02/03/1993 - Interpretation of the Process Safety Management standard.
121 1993 - 02/03/1993 - Interpretation of the Process Safety Management standard.
122 1993 - 02/02/1993 - Outer Continental Shelf lands--OSHA and the U.S. Coast Guard.
123 1993 - 01/25/1993 - Solutions of hydrogen chloride in water.
124 1993 - 01/21/1993 - Solutions of hydrogen chloride in water do not apply to Process Safety Management Standard.
125 1993 - 01/18/1993 - When steam boilers fired by flammable liquids or natural gas are subject to the PSM standard.
126 1993 - 01/08/1993 - Employee participation requirements of the Process safety management standard.
127 1993 - 01/08/1993 - Steam boilers fired by flammable liquids or natural gas and the PSM standard.
128 1992 - 12/21/1992 - PSM threshold quantity; EPA regulated and permitted RCRA Hazardous waste treatment.
129 1992 - 10/30/1992 - Natural gas distribution and transmission facilities.
130 1992 - 10/28/1992 - Natural gas facility process hazard analysis requirements.
131 1992 - 10/23/1992 - Process safety management standard and a "retail establishment" definition.
132 1992 - 10/22/1992 - PSM Standard does not apply to 10,000 pounds of hydrocarbon fuel on site used solely as a fuel for a furnace.
133 1992 - 10/09/1992 - Propane delivery, total aggregate quantity less than 10,000 pounds.
134 1992 - 10/09/1992 - Training requirements of PSM.
135 1992 - 09/21/1992 - Written operating procedures for computerized process control and safety interlock system software.
136 1992 - 09/16/1992 - Gasoline used as a fuel to test run inboard and outboard engines does not fall under PSM.
137 1992 - 09/09/1992 - Metallurgical certification requirements for components to be answered in OSHA Directive.
138 1992 - 08/28/1992 - Ceramic firing utilizing propane in amounts exceeding 10,000 pounds not subject to process safety management standard.
139 1992 - 07/28/1992 - Final rule on process safety management of highly hazardous chemicals, formaldehyde.
140 1992 - 07/20/1992 - Cellulose nitrate and the PSM Standard.
141 1992 - 06/28/1992 - Formaldehyde (37% by weight or greater) in the Process Safety Management Standard.
142 1992 - 06/24/1992 - Clarification of "laboratory" and "process" relative to process safety management standard.
143 1992 - 06/24/1992 - HHCs as it applies to storing of flammable liquids.
144 1992 - 06/24/1992 - Muriatic acid not subject to Process Safety Management standard.
145 1992 - 06/19/1992 - PSM standard and fertilizer storage and mixing facilities.
146 1992 - 06/04/1992 - Storage of flammable liquids and the PSM.
147 1992 - 05/14/1992 - Inspection of chemical accidents.

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