- Part Number:1926
- Part Number Title:Safety and Health Regulations for Construction
- Subpart:1926 Subpart F
- Subpart Title:Fire Protection and Prevention
- Standard Number:
- Title:Liquefied petroleum gas (LP-Gas).
- GPO Source:
Approval of equipment and systems.
All cylinders shall meet the Department of Transportation specification identification requirements published in 49 CFR part 178, Shipping Container Specifications.
Definition. As used in this section, Containers - All vessels, such as tanks, cylinders, or drums, used for transportation or storing liquefied petroleum gases.
Welding on LP-Gas containers. Welding is prohibited on containers.
Container valves and container accessories.
Requirements for appliances.
Containers and regulating equipment installed outside of buildings or structures. Containers shall be upright upon firm foundations or otherwise firmly secured. The possible effect on the outlet piping of settling shall be guarded against by a flexible connection or special fitting.
Containers and equipment used inside of buildings or structures.
Containers in use means connected for use.
Systems utilizing containers having a water capacity greater than 2 ½ pounds (nominal 1 pound LP-Gas capacity) shall be equipped with excess flow valves. Such excess flow valves shall be either integral with the container valves or in the connections to the container valve outlets.
Portable heaters, including salamanders, shall be equipped with an approved automatic device to shut off the flow of gas to the main burner, and pilot if used, in the event of flame failure. Such heaters, having inputs above 50,000 B.t.u. per hour, shall be equipped with either a pilot, which must be lighted and proved before the main burner can be turned on, or an electrical ignition system.
Note: The provisions of this subparagraph do not apply to portable heaters under 7,500 B.t.u. per hour input when used with containers having a maximum water capacity of 2 ½ pounds.
Containers having a water capacity greater than 2 ½ pounds (nominal 1 pound LP-Gas capacity) connected for use shall stand on a firm and substantially level surface and, when necessary, shall be secured in an upright position.
Multiple container systems.
Storage of LPG containers. Storage of LPG within buildings is prohibited.
Storage outside of buildings.
Storage outside of buildings, for containers awaiting use, shall be located from the nearest building or group of buildings, in accordance with the following:
|Quantity of LP-Gas stored||Distance (feet)|
|500 lbs. or less||0|
|501 to 6,000 lbs||10|
|6,001 to 10,000 lbs||20|
|Over 10,000 lbs||25|
Fire protection. Storage locations shall be provided with at least one approved portable fire extinguisher having a rating of not less than 20-B:C.
Systems utilizing containers other than DOT containers -
Application. This paragraph applies specifically to systems utilizing storage containers other than those constructed in accordance with DOT specifications. Paragraph (b) of this section applies to this paragraph unless otherwise noted in paragraph (b) of this section.
Design pressure and classification of storage containers. Storage containers shall be designed and classified in accordance with Table F-31.
|Container type||For gases with vapor press. Not to exceed lb. per sq. in. gage at 100 °F. (37.8 °C.)||Minimum design pressure of container, lb. per sq. in. gage|
|1949 and earlier editions of ASME Code (Par. U-68, U-69)||1949 edition of ASME Code (Par. U-200, U-201); 1950, 1952, 1956, 1959, 1962, 1965, and 1968 (Division 1) editions of ASME Code; All editions of API-ASME Code3|
1 New storage containers of the 80 type have not been authorized since Dec. 31, 1947.
2 Container type may be increased by increments of 25. The minimum design pressure of containers shall be 100% of the container type designation when constructed under 1949 or earlier editions of the ASME Code (Par. U-68 and U-69). The minimum design pressure of containers shall be 125% of the container type designation when constructed under: (1) the 1949 ASME Code (Par. U-200 and U-201), (2) 1950, 1952, 1956, 1959, 1962, 1965, and 1968 (Division 1) editions of the ASME Code, and (3) all editions of the API-ASME Code.
3 Construction of containers under the API-ASME Code is not authorized after July 1, 1961.
Containers with foundations attached (portable or semiportable b containers with suitable steel "runners" or "skids" and popularly known in the industry as "skid tanks") shall be designed, installed, and used in accordance with these rules subject to the following provisions:
When LP-Gas and one or more other gases are stored or used in the same area, the containers shall be marked to identify their content. Marking shall be in compliance with American National Standard Z48.1-1954, "Method of Marking Portable Compressed Gas Containers To Identify the Material Contained."
Damage from vehicles. When damage to LP-Gas systems from vehicular traffic is a possibility, precautions against such damage shall be taken.
[44 FR 8577, Feb. 9, 1979; 44 FR 20940, Apr. 6, 1979, as amended at 58 FR 35170; June 30, 1993]