Hi:
This book is about how to safely respond to propane emergencies. Propane is a flammable gas that is sometimes generically referred to as LP-Gas, LPG, or Liquefied Petroleum Gas. These terms are often used interchangeably and, while it is true that they have similar fire hazards, propane is only one of several constituent gases that make up Liquefied Petroleum Gas (LPG). For example, commercial grade LPG manufactured at a refinery is primarily made up of propane-butane mixtures, but might also contain small percentages of ethane, ethylene, propylene, isobutane, or butylene, all of which can cause slight variations in LPG’s properties (e.g., flammable range, vapor pressure, etc.). So, while it is true that LPG is primarily a mixture of flammable gases that includes propane, the majority of the LP-Gas used in our homes and in the workplace primarily consists of propane or some combination of propane and butane mixtures. In Section 2 of this book we will get into more detail on the physical and chemical properties of LPG vs. propane and the different grades of propane.
Propane is the LP-Gas most frequently encountered by emergency responders and can be found in a wide variety of industrial, commercial, and consumer settings. Attempting to cover the numerous emergency response scenarios for the entire propane system would probably take two or three books. Therefore, the scope of this textbook will be limited to those scenarios most frequently encountered by emergency responders and involving propane in residential occupancies, the workplace, in bulk transportation and as a fuel for motor vehicles. Although this textbook will not deal specifically with emergencies involving LP Gases at gas processing plants, refineries, pipelines, ships, or barges, good part of the information still applies to them. Readers can obtain additional information on these topics from the American Petroleum Institute (API), Gas Processors Association (GPA), or the National Fire Protection Association (NFPA).
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Regards
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