While I don't have specific OSHA standards for outdoor storage of gas cylinders, I can provide general guidance based on the documents you provided. Here's what to consider for safe gas cylinder storage:

• General Requirements:

  • Store cylinders in well-ventilated locations [1].
  • Keep cylinders away from heat sources 8, 9.
  • Post signs prohibiting smoking and open flames within 20 feet of storage areas [1].
  • Ensure temperatures do not exceed 125°F (52°C) [1].
  • Protect cylinders from sparks, hot slag, or flames [1].
  • Protect cylinders from corrosion and damage 8, 11.
  • Store cylinders where they cannot be knocked over or damaged by falling objects 8, 9.
  • Prevent tampering by unauthorized persons 8, 9.
  • Keep cylinders away from exit routes or areas used for personnel travel [2].

• Specific Gases:

  • Fuel gas cylinders should be stored outside, or in a separate room/compartment built with noncombustible materials and proper fire-resistance [3].
  • Separate oxygen cylinders from fuel-gas cylinders or combustible materials by a minimum of 20 feet or a noncombustible barrier 9, 16.

• Cylinder Condition and Handling:

  • Keep cylinders, valves, couplings, regulators, and hoses free from oily or greasy substances [4].
  • Mark cylinders legibly with the chemical or trade name of the gas 1, 3.
  • Equip cylinders with connections complying with ANSI standards [5].
  • Use valve protection caps when cylinders are not in use 9, 16.
  • Secure cylinders to prevent falling or movement [6].
  • Move cylinders using a special truck, hand truck, cart, or pallet [7].

• Additional Considerations:

  • Ensure connections to piping and regulators are tight to prevent leakage [8].
  • Close valves on empty cylinders [9].
  • Store acetylene cylinders valve end up 9, 10.
  • Comply with NFPA No. 55-2010 for liquid oxygen systems with a storage capacity of more than 20,000 cubic feet [3].

It's important to consult specific OSHA regulations and Compressed Gas Association (CGA) pamphlets for detailed requirements 4, 6.