Section 5(a)(1) of the OSH Act, often referred to as the General Duty Clause, requires employers to "furnish to each of his employees employment and a place of employment which are free from recognized hazards that are causing or are likely to cause death or serious physical harm to his employees". Section 5(a)(2) requires employers to "comply with occupational safety and health standards promulgated under this Act".
 

Note: Twenty-four states, Puerto Rico and the Virgin Islands have OSHA-approved State Plans and have adopted their own standards and enforcement policies. For the most part, these States adopt standards that are identical to Federal OSHA. However, some States have adopted different standards applicable to this topic or may have different enforcement policies.

General Industry (29 CFR 1910)

• 1910 Subpart H, Hazardous materials [related topic page]
  • 1910.101, Compressed gases (general requirements)
  • 1910.102, Acetylene
  • 1910.103, Hydrogen
  • 1910.104, Oxygen
  • 1910.105, Nitrous oxide
  • 1910.106, Flammable and combustible liquids
  • 1910.107, Spray finishing using flammable and combustible materials [related topic page]
  • 1910.110, Storage and handling of liquefied petroleum gases
  • 1910.111, Storage and handling of anhydrous ammonia [related topic page]
• 1910 Subpart M, Compressed gas and compressed air equipment [related topic page]
  • 1910.169, Air receivers
• 1910 Subpart O, Machinery and machine guarding [related topic page]
  • 1910.217, Mechanical power presses
• 1910 Subpart R, Special industries
  • 1910.261, Pulp, paper, and paperboard mills [related topic page]
  • 1910.262, Textiles [related topic page]
  • 1910.263, Bakery equipment

Shipyard Employment (29 CFR 1915)

• 1915 Subpart K, Portable, unfired pressure vessels, drums and containers, other than ship's equipment
  • 1915.172, Portable air receivers and other unfired pressure vessels
  • 1915.173, Drums and containers

Construction Industry (29 CFR 1926)

• 1910 Subpart C, General safety and health provisions
  • 1926.29, Acceptable certifications (pressure vessels and boilers)
• 1926 Subpart F, Fire protection and prevention
  • 1926.152, Flammable and combustible liquids
  • 1926.153, Liquefied petroleum gas
• 1926 Subpart I, Tools - hand and power
  • 1926.306, Air receivers
• 1926 Subpart O, Motor vehicles, mechanized equipment, and marine options
  • 1926.603, Pile driving equipment

• 2004 Boiler and Pressure Vessel Code

• 510, Pressure Vessel Inspection Code: Maintenance Inspection, Rating, Repair, and Alteration. 8th ed. (1997, June 1).
• 572, Inspection of Pressure Vessels. (2001, February).
• 920, Prevention of Brittle Fracture of Pressure Vessels. (1990, March 1).
• 910, Digest of State Boiler, Pressure Vessel, Piping & Aboveground Storage Tank Rules and Regulations. 8th ed. (1997, November 1).
• 620, Design and Construction of Large, Welded, Low-Pressure Storage Tanks. 10th ed. (2002, February). 
• 941, Steels for Hydrogen Service at Elevated Temperatures and Pressures in Petroleum Refineries and Petrochemical Plants. 6th ed. (2004, February).
• 945, Avoiding Environmental Cracking in Amine Units. 3rd ed. (2003, June).