Safety Regulation for Small LPG Distribution Systems (2018) / Chapter Skim
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21 2 Basic Configurations and Uses of LPG Distribution Systems This chapter provides an overview of liquefied petroleum gas (LPG) pipeline distribution systems, explaining their various uses and configurations, key components, and supply and operations.
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22 SAFETY REGULATION FOR SMALL LPG DISTRIBUTION SYSTEMS LPG is a fuel used in 11.8 million homes and 510,000 businesses for space heating, water heating, clothes drying, and cooking.1 Altogether, about 5 percent of U.S. households use propane as their primary heating fuel.2 This figure does not include consumers and businesses who buy propane in small volumes (e.g., 5- to 25-gal cylinders)
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BASIC CONFIGURATIONS AND USES 23 and installation)
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24 SAFETY REGULATION FOR SMALL LPG DISTRIBUTION SYSTEMS FIGURE 2-1 Multi-user LPG distribution system configurations for (a) residential and (b)
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BASIC CONFIGURATIONS AND USES 25 FIGURE 2-2 LPG storage tanks: (a)
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26 SAFETY REGULATION FOR SMALL LPG DISTRIBUTION SYSTEMS FIGURE 2-4 Stationary LPG storage tank. rupture the pipe when the ambient temperature increases.
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BASIC CONFIGURATIONS AND USES 27 FIGURE 2-5 LPG tank regulator system. NOTE: WC = water column.
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28 SAFETY REGULATION FOR SMALL LPG DISTRIBUTION SYSTEMS tribution, whereby the operator of the system purchases gas from a supplier through a single large meter and resells the gas to the ultimate consumer for uses such as heating and cooking.11 That customer either purchases the gas directly through a house meter or by other means, such as a rental payment that includes all utilities. In a less common scenario, the operator may be neither the supplier nor the customer, such as at mobile home parks where office staff manage the distribution system operations through the use of contractors and bill the mobile home residents for use of fuel.12 There are an estimated 3,000 propane suppliers in the United States, many consisting of small, often family-owned, businesses.13 The three largest suppliers are AmeriGas, Ferrellgas, and Suburban Propane, which operate nationally.
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BASIC CONFIGURATIONS AND USES 29 or close to the user's premises. The systems usually consist of one or more storage tanks, a first stage regulator, service lines, a second stage regulator, and a customer meter.
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