OSHA standard for outdoor storage of gas cylinders

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- (a) connections to piping, regulators and other components that are kept tight to prevent leakage; and - (b) valves that are kept closed at all times, whether the cylinder is charged or empty, except where - (i) gas is flowing from the cylinder, - (ii) the gas in the cylinder is maintaining pressure in a supply line, or - (iii) the cylinder is on stand-by during and between operations using gas. - (3) An employer shall ensure that hose lines for conveying flammable gas or oxygen from supply piping or compressed gas cylinders to torches have threads designed in compliance with the latest version of Compressed Gas Association standard ANSI/CGA V-1, 'American National Standard/Compressed Gas Association Standard for Compressed Gas Cylinder Valve Outlet and Inlet Connections'. Subsection 46(3) amended: O.I.C. 2013-65, N.S. Reg. 53/2013. ## Portable compressed gas cylinders 47 - (1) In this Section and in Sections 48 and 49, 'portable compressed gas cylinder' means a cylinder having a water capacity of 450 kg or less that contains or is intended to contain a compressed or liquefied gas. - (2) Subject to the Fire Safety Act , an employer shall ensure that a portable compressed gas cylinder is stored - (a) in a well-ventilated storage area where the temperature does not exceed 52 C; o - (b) with cylinders grouped by types of gas and the groups arranged to take into account the gases contained; - (c) with full and empty cylinders separated; - (d) at a safe distance from all operations that produce flames, sparks or molten metal or result in excessive heating of the cylinder; - (e) securely; and - (f) with protective devices in place. Subsection 47(2) amended: O.I.C. 2013-65, N.S. Reg. 53/2013. - (3) Subject to the Fire Safety Act , an employer shall ensure that a portable compressed \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

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Division 2 AO 3-2019 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (a) Employers must ensure that the manufacturing, in-plant transfer, transportation, handling, storage, and use of acetylene in cylinders comply with this rule and the provisions of Compressed Gas Association (CGA) Pamphlet G-1-2009 ('Acetylene') (Compressed Gas Association, Inc., 12th ed., 2009). - (b) Definitions. Confined space: A space that meets all of the following: - (i) Large enough and configured so that an employee can fully enter the space and perform work. - (ii) Has limited or restricted means for entry and/or exit. - (iii) Is not designed for continuous employee occupancy. Enclosed space - Spaces that are surrounded by something, and the only openings are access openings, for example, drawers, closets, unventilated cabinets, automobile trunks, unventilated cylinder compartments, or toolboxes. Handling - Moving, connecting, or disconnecting a compressed gas container under normal conditions. PSIG (Gauge Pressure) - Pressure above or below local atmospheric pressure displayed as pounds per square inch. Secure - Arrange to prevent movement (including lashing and chaining), or a minimum of three points of contact with other cylinders or walls. Use - Withdrawing and using the gas in a non-recoverable manner for applications other than manufacturing or repackaging of compressed gasses. - (c) Acetylene Cylinders General Requirements. - (A) You must: - (i) Store and use cylinders valve end up. Note: Gas suppliers and distributors may store secured containers in a horizontal position. - (ii) Secure cylinder(s) to prevent falling or movement. - (iii) Use a cylinder cart or cylinder pallet to move acetylene cylinders. Note: This rule does not apply to acetylene fill plants, handling, distribution, and maintenance processes where cylinders are tilted and rolled on their bottom edge only the minimal distance necessary to get them on and off carts or pall…

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Oregon Occupational Safety and Health Division Oregon Administrative Rules ## (a) You must: - (A) Guard against mixtures of fuel gases and air or oxygen that may be explosive. - (i) Use approved apparatus such as torches, regulators, or pressure reducing valves, hoses and connections, protective equipment, acetylene generators, and manifolds. - (ii) Install and use reverse flow check valves and flashback arrestors according to torch manufacturers' recommendations unless they are not required by the manufacturer. - (B) Use cylinders that meet the Department of Transportation requirements published in 49 CFR Part 178. - (C) Use portable cylinders for the storage and shipment of compressed gases that are constructed and maintained in accordance with the U.S. Department of Transportation regulations, 49 CFR Parts 171-179. - (D) Use compressed gas cylinders equipped with connections complying with Compressed Gas Association (CGA) Pamphlet V-1 1994, 7th Edition, Standard for Compressed Gas Cylinder Valve Outlet and Inlet Connections. - (E) Use compressed gas cylinders whose contents are legibly marked with: - (i) The chemical or trade name of the gas in conformance with Compressed Gas Association (CGA) Pamphlet C-7 2011, 9th Edition, Guide to Preparation of Precautionary Labeling and Marking of Compressed Gas Containers, and - (ii) Stenciling, stamping, or labeling that is not readily removable. - (F) Protect against oil and grease hazards. - (i) Keep cylinders, cylinder valves, couplings, regulators, hose, and apparatus free from oily or greasy substances. - (ii) Keep oxygen cylinders away from contacting oil and grease. - (G) Follow the requirements of OAR [redacted phone](13) Service Piping, OAR [redacted phone](14) Acetylene Generators, OAR [redacted phone](15) Calcium Carbide Storage when generating acetylene for immediate use at the work location. <!-- image -->

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Oregon Occupational Safety and Health Division Oregon Administrative Rules - (a) When handling or moving cylinders you must: - (A) Provide adequate access for cylinder handling. - (B) Remove regulators and ensure any required valve protection is in place before moving unsecured cylinders. - (C) Move cylinders using a special truck, a cylinder hand truck, a cart or cylinder pallet. Note: This rule does not apply to acetylene manufacturers, cylinder fill plants and distributors of compressed gases and acetylene. (7)(a)(C) does not apply to the movement of individual fuel gas cylinders of 40 cubic feet (b-tank) or less. - (D) Leave the valve protection cap and valve seal outlet in place until the cylinder has been secured in place and is ready to be connected to a regulator or manifold. Note: This does not apply to manufacturers and distributors of compressed gases and acetylene plants where cylinders are connected and disconnected to cylinder manifolds. - (E) Use warm, not boiling, water to thaw frozen cylinders loose from the ground or if otherwise fixed. - (b) When moving cylinders by a crane or derrick you must: - (A) Use a cradle, boat, or suitable platform that secures cylinders. - (B) Install valve-protection caps on cylinders, including those cylinders with a water weight capacity of over 30 lbs., designed to accept a cap. - (C) Not use slings or electric magnets for this purpose. - (c) Before moving a portable bank or cylinder cradles you must: - (A) Close all individual oxygen and flammable gas cylinder valves on portable cylinder banks when in storage. - (B) Restrict manual movement of portable cylinder banks to clean, smooth, level stationary surfaces. - (C) Stay out of the portable-bank's travel path when moving manually. - (d) When moving a portable bank or cylinder cradles with a forklift you must secure them to the forklift. - (e) When moving a portable bank or cylinder cradles with a crane you must use the lifting hook attached to the cradles or …

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Oregon Occupational Safety and Health Division Oregon Administrative Rules 2BDivision 2 - (M) Where they will not be struck by heavy objects. - (N) Away from inside or outside exit routes or other areas normally used or intended for safe travel of personnel. - (O) Where they will not be subject to unventilated enclosed spaces. - (P) That are not identified as confined spaces. - (Q) With prominent signs posted identifying the names of the gasses stored. - (b) You must store cylinders in the following manner: - (A) With valve caps in place. Note: This applies to cylinders designed to accept valve caps. - (B) Valve end up and secured from movement. - (C) Liquefied gas cylinders and acetylene cylinders with valve end up. Note: Liquefied petroleum gas cylinders used on forklifts may be stored either horizontally or vertically. - (D) Refrigerated liquid cylinders in a vertical position. - (E) With all individual oxygen and flammable gas cylinder valves on portable cylinder banks closed. - (c) You must separate oxygen cylinders from fuel-gas cylinders or combustible materials (especially oil or grease) and any other substance likely to cause or accelerate fire by: - (A) A minimum distance of 20 feet, or - (B) A noncombustible barrier that: - (i) Vertically extends 18 inches above the tallest cylinder(s) and is at least 5 feet high. - (ii) Laterally extends 18 inches beyond the sides of the cylinders. - (iii) Has a fire-resistance rating of at least one-half hour. - (d) You must separate oxygen and fuel gas cylinders secured on a cart from assigned cylinder storage areas by a minimum of 20 feet or a non combustible barrier. Note 1: Single cylinders of oxygen and fuel gas can be secured on a cart or used adjacent to each other without being separated by a partition.

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ permitting mixtures of air or oxygen with flammable gases prior to consumption, except at the burner or in a standard torch, unless approved for the purpose. - (2) Maximum pressure . You must not, under any condition generate, pipe (except in approved cylinder manifolds), or utilize acetylene at a pressure in excess of 15 p.s.i. gauge pressure or 30 p.s.i. absolute pressure. (The 30 p.s.i. absolute pressure limit is intended to prevent unsafe use of acetylene in pressurized chambers such as caissons, underground excavations or tunnel construction.) This requirement does not apply to storage of acetylene dissolved in a suitable solvent in cylinders manufactured and maintained according to U.S. Department of Transportation requirements, or to acetylene for chemical use. You must not use liquid acetylene. - (3) Apparatus . You must use only approved apparatus such as torches, regulators or pressurereducing valves, acetylene generators, and manifolds. Use of replacement tips will not nullify the 'approved apparatus' status of a torch, if such replacement tips are made to the same specifications as the original tip of the torch at the time of approval by the nationally recognized testing laboratory, or if the use of such tips in conjunction with convertor/adaptors results in the same specifications as the original tip at the time of approval by the nationally recognized testing laboratory. - (4) Personnel . You must instruct and judge competent workers in charge of the oxygen or fuel-gas supply equipment, including generators, and oxygen or fuel-gas distribution piping systems for this important work before being left in charge. Rules and instructions covering the operation and maintenance of oxygen or fuel-gas supply equipment including generators, and …

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<!-- image --> 2BDivision 2 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (F) Remove cylinders from the 'inside vehicle compartment' to the outside of the vehicle prior to use. - (G) Open 'outside vehicle compartment' doors when withdrawing product from cylinders. - (H) Ensure that all outside cylinder compartment(s) are sealed to prevent leakage to the inside of the vehicle. Outside compartment doors must open to the outside of the vehicle. - (I) Ensure the interior of any cylinder compartment containing oxidizers does not contain petroleum products or materials that have contacted petroleum products. - (c) When transporting cylinders in vehicles you must not put them in the trunks of passenger vehicles. - (6) Storage of Oxygen and Fuel Gas Cylinders. - (a) You must store oxygen and fuel gas cylinders in locations: - (A) Specifically assigned. - (B) Well ventilated. - (C) That avoids prolonged exposure to damp environments. - (D) Away from heat sources. - (E) Posted with signs prohibiting smoking and open flame within 20 feet. - (F) Where the temperature does not exceed 125°F (52°C). - (G) Where sparks, hot slag, or flame will not reach them. - (H) Where they will not contact electrical welding equipment or electrical circuits. Note: All high and low pressure cylinders in contact with or secured to a conductive table or column without being isolated from electrical current can become part of an electrical circuit. - (I) Where they are protected from corrosion. - (J) Where they cannot be knocked over. - (K) Where they cannot be damaged by passing or falling objects. - (L) Where they will not be tampered with by unauthorized persons.

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ ## (2) Storage of cylinders - general . - (a) You must keep cylinders away from radiators and other sources of heat. - (b) Inside of buildings, you must store cylinders in a well-protected, well-ventilated, dry location, at least 20 feet from highly combustible materials such as oil or excelsior. Cylinders should be stored in definitely assigned places away from elevators, stairs, or gangways. You must locate assigned storage spaces where cylinders will not be knocked over or damaged by passing or falling objects, or subject to tampering by unauthorized persons. You must not keep cylinders in unventilated enclosures such as lockers and cupboards. - (c) You must close the valves on all empty cylinders. - (d) Valve protection caps, where cylinder is designed to accept a cap, must always be in place, hand-tight, except when cylinders are in use or connected for use. - (3) Fuel-gas cylinder storage . Inside a building, you must limit cylinders, except those in actual use or attached ready for use, to a total gas capacity of two thousand cubic feet or three hundred pounds of liquefied petroleum gas. - (a) For storage in excess of two thousand cubic feet total gas capacity of cylinders or three hundred pounds of liquefied petroleum gas, you must provide a separate room or compartment conforming to the requirements specified in WAC 296-24-[redacted postal code] (6)(h) and (i), or you must keep cylinders outside or in a special building. Special buildings, rooms or compartments must have no open flame for heating or lighting and must be well ventilated. They may also be used for storage of calcium carbide in quantities not to exceed six hundred pounds, when contained in metal containers complying with WAC 296-24-[redacted postal code] (1)(a) and (b). Signs sh…

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<!-- image --> 2BDivision 2 Oregon Administrative Rules Oregon Occupational Safety and Health Division Note 2: An additional set of cylinders secured at a workstation without attached pressure reducing regulators will be considered in use and not in storage. - (e) You must limit cylinders, except those in actual use or attached ready for use, stored inside buildings to a total gas capacity of 2,000 cubic feet or 300 pounds of liquefied petroleum gas. - (f) Store cylinders of fuel gases in excess of 2,000 cubic feet total gas capacity or 300 pounds of liquefied petroleum gas (LPG), or any LPG mixture where LPG is the primary gas, (this does not apply to cylinders in actual use or attached ready for use) in the following manner: - (A) Outside, or - (B) In a separate room, compartment or special building with interior walls, partitions, floors, and ceilings that: - (i) Are constructed with noncombustible material having a fireresistance floor to ceiling - (ii) Are securely anchored - (iii) Have at least one wall of the room that is an exterior wall - (C) The room must have a swinging type, self-closing fire door for a Class B opening and have a rating of at least 1 hour if there are openings to other parts of the building. - (D) The room must have wired glass windows mounted with approved metal frames and fixed sashes where windows are used. They must be installed in accordance with the Standard for the Installation of Fire Doors and Windows, NFPA 80-1970. - (g) You must comply with the provisions of the Compressed Gases and Cryogenic Fluid Code, NFPA No. 55-2010 when a liquid oxygen system is to be used to supply gaseous oxygen that has a storage capacity of more than 20,000 cubic feet of oxygen (measured at 14.7 psia (101 kPa) and 70° F (21.1° C)), connected in service or ready for service, or unconnected reserves on site. - (h) The handling, storage, and utilization of all compressed gases in cylinders, portable tanks, rail tank cars, or motor vehicle cargo tan…