15-26-590 Container storage limit in buildings.

   The maximum capacity of any individual containers used inside a building shall not exceed 100 pounds of liquefied petroleum gas.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-600 Aggregate container system capacity in buildings.

   In buildings, the maximum aggregate amount of cylinders hooked into a manifold shall not exceed 300 pounds of liquefied petroleum gas capacity. Manifold of cylinders shall be separated by a distance of 20 feet.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-610 Portable heaters.

   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 extinguishment. Such heaters having inputs above 50,000 British thermal units 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 electric ignition system. These provisions do not apply to tar kettle, burners, torches or melting pots. The heat flow from portable heaters shall not be directed toward any liquefied petroleum gas cylinder.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-620 Containers – Construction standards.

   All containers for liquefied petroleum gas shall be constructed in accordance with the applicable provisions of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section VIII Unfired Pressure Vessels, 1973 Edition or the Interstate Commerce Commission or Department of Transportation regulations. Each container shall have markings as required by the code under which it is manufactured. All containers shall be protected from mechanical injury whenever used or stored.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-630 Containers – Valves and piping.

   Valves, fittings and accessories connected directly to the container, including primary shutoff valves, shall have a rated working pressure of at least 250 pounds per square inch gauge and shall be of material and design suitable for liquefied petroleum gas service. Cast iron shall not be used. Vapor piping with operating pressures not exceeding 125 pounds per square inch gauge shall be designed for that pressure. Vapor piping over 125 pounds per square inch gauge shall have a working pressure of at least 250 pounds per square inch gauge. All valves, fittings, accessories and piping shall be protected from mechanical injury.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-640 Containers – Relief valves.

   All liquefied petroleum gas containers shall be provided with a spring-loaded safety relief valve as required by National Fire Protection Association Pamphlet No. 58 entitled “Standard for the Storage and Handling of Liquefied Petroleum Gas”, 1973 Edition.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-650 Excess flow valves.

   An excess flow valve shall be installed wherever required by National Fire Protection Association Pamphlet No. 58 entitled “Standard for the Storage and Handling of Liquefied Petroleum Gas”, 1973 Edition.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-660 Shutoff valves.

   Whenever a liquefied petroleum gas line enters a building, it should be arranged such that the flow of gas can be shutoff from the outside of the building. A shutoff valve shall also be provided at or as a part of each device using liquefied petroleum gas as a fuel.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-670 Gauging devices.

   A suitable gauging device shall be provided to determine the liquid level in each container.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-680 Gas hoses.

   All hose used inside buildings as a part of a liquefied petroleum gas system shall be of a type tested and approved by a recognized testing laboratory and be so marked. The maximum length of hose used inside a building on a salamander shall not exceed 20 feet and a shutoff valve shall be provided just ahead of the hose connection. Connections shall be tight and be capable of withstanding five times the working pressure to which they are subject. All hose shall be protected from mechanical injuries.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-690 Vaporizers.

   Vaporizers shall be indirect or direct fired and shall be constructed in accordance with the applicable provisions of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section VIII Unfired Pressure Vessels, 1973 Edition. They shall be marked to indicate the allowable working pressure and temperature.

   If installed in a building, the building shall only be occupied as a vaporizer house. The heat-producing parts shall comply with Chapter 13-180 . Suitable means shall be provided to prevent the flow of liquid into the vapor area of the system. The following safety clearances, as defined in Section 15-24-250, shall be maintained:

 

Exposure	Minimum Distance (feet)
Container	10
Container shutoff valves	15
Location where connections and disconnections are made or where LP gas is vented to the atmosphere in the course of transfer operations	20
Nearest building or group of buildings or line of adjoining property. If rate over 100 gallons per hour, increase distance to 50 feet	25

 

(Coun. J. 12-9-92, p. 25465)

 

Notes

13-180

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15-26-700 Container storage – Safety clearances.

   Whenever one or more containers of liquefied petroleum gas are installed for use outside, the following safety clearances, as shown in Table 15-26-700 and as defined in Section 15-24-250, shall be maintained:

Table 15-26-700
Minimum Distances in Feet

Water Capacity Per Container	Between Container and Other Buildings on Same Property		Between Container and Building Occupied in Whole or in Part as Institutional Assembly or Open Air Assembly
	Underground	Aboveground	Underground	Aboveground	Between Aboveground Containers
Less than 125 gals. (See Note 1)	10 (See Notes 2 & 3)	None	100	100	None
125 gals. to 500 gals.	10	10	150	150	3
501 gals. to 1,000 gals.	25	25	150	150	3
1,001 gals. to 30,000 gals.	50	50	250	250	5
30,001 gals. to 70,000 gals.	75	75	250	250	5
Less than 125 gallons (See Note 1)	10	10	15	15
125 – 501	15	15	25	25
501 – 1,000	25	25	50	50
1,001 – 2,000	50	50	50	50
2,001 – 10,000	50	50	75	75
10,001 – 15,000	50	50	100	100
15,001 – 30,000	75	75	100	100
30,001 – 70,000	100	100	150	150

 

   Note 1. If the number of 100 lb. LP gas capacity cylinders in a multicylinder installation at a consumer site is greater than eight, the minimum distance shall comply with the appropriate portion of this table, applying the aggregate capacity rather than the capacity per container. If more than one installation is made, each installation shall be separated from another installation by at least 25 feet. Do not apply the minimum distances between aboveground containers to such installation.

   Note 2. The filling connection and the vent from the liquid level gauges in containers, filled at point of installation, shall be not less than ten feet in any direction from air openings into sealed combustion system appliances or mechanical ventilation air intakes.

   Note 3. The discharge from safety relief devices shall be located not less than three feet horizontally away from any building opening which is below the level of such discharge.

   Whenever containers are discharging into a common manifold, the aggregate water capacity shall be used in determining the safety clearances; except that, when not more than three containers, none of which have an individual water capacity greater than 1,000 gallons, are manifolded, the individual capacity of the largest container shall be used in determining the safety clearances. (See Table 15-26-700.)

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-710 Temporary container storage – Safety clearances.

   Whenever cylinders of liquefied petroleum gas are stored outside awaiting use in connection with buildings classed as industrial or storage or construction-sites, the safety clearances as shown in Table 15-26-710, and as defined in Section 15-24-250, shall be maintained. (See Table 15-26-710.)

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616; Amend Coun. J. 4-15-15, p. 106130, § 13)

Table 15-26-710
Minimum Distances in Feet

 

Aggregate Capacity of Cylinder Groups	Groups of Cylinders and Buildings on the Same Property	Between Cylinder Storage Groups	Between Groups of Cylinders and Adjoining Property	Groups of Cylinders and Buildings Occupied as Institutional, Assembly or Open Air Assembly
2,500 lbs. or less	None See Note 1 and 2	10	10	100
2,501 to 6,000 lbs.	25	25	25	250
6,001 to 10,000 lbs.	50	50	50	250
Over 10,000 lbs.	75	75	75	250

 

   Note 1. Storage must be ten feet away from door opening.

   Note 2. The discharge from safety relief devices shall be located not less than three feet horizontally away from any building opening which is below the level of such discharge.

15-26-720 Underground storage tank installation.

   Underground tanks for liquefied petroleum gas shall be installed in accordance with Section 3126 of National Fire Protection Association Pamphlet No. 58 entitled “Standard for the Storage and Handling of Liquefied Petroleum Gas”, 1973 Edition.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)

15-26-730 Filling density and procedure.

   The maximum amount of liquid used to fill the container shall be determined by the filling density as given in National Fire Protection Association Pamphlet No. 58 entitled “Standard for the Storage and Handling of Liquefied Petroleum Gas”, 1973 Edition. The actual filling operation shall be conducted outside and be located 25 feet from any structure.

(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616)