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For most parts of the United States, this means Chapters 27 and 34 of the IFC. Foremost, businesses must comply with state and local codes, as required by law. There are some significant differences in protection philosophies in these standards. The three main standards that provide guidance for protection include the IFC (currently the 2012 edition), NFPA 30 (currently the 2012 edition), and FM Global Data Sheets. Because DOT has somewhat different definitions for flammable and combustible liquids, DOT labels are of little help in evaluating hazards and protection requirements for onsite storage. DOT regulations only apply when a vehicle leaves a private driveway, not for the storage of products at a facility. Generally, quantities are limited to a trailer. DOT standards are based on transporting hazardous materials over public highways and across state lines, typically without any type of fixed fire suppression.
#Sherwin williams multispec code
of Transportation (DOT) and fire code requirements are two different standards with very different scopes. They are merely indicators of the relative hazard in terms of ignition potential and difficulty of fire extinguishment.ĭept. It is important to remember that these different classes are not an indicator of the potential amount of damage once they are involved in an uncontrolled fire. In FM’s view, any combustible liquid that is heated will burn, thus it considers all liquids flammable, although this definition was recently changed to “ignitable.” FM divides water-miscible liquids into four different groups and applies higher protection requirements to liquids with a flash point lower than 200 F. A combustible liquid has a flash point above 100 F in other words, it will typically not burn at ambient temperatures and requires heating before burning. In accordance with the definitions of NFPA 30: Flammable and Combustible Liquids Code, the International Fire Code (IFC), and OSHA, a flammable liquid has a flashpoint less than 100 F in other words, it will burn at ambient temperatures. The motor oil would just be more difficult to ignite.
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But both liquids have similar heat release rates and when burning would cause approximately the same amount of damage, given identical quantities. Which has the higher fire risk? Most would say the gasoline. To illustrate this concept, think of two products found in most residential garages: gasoline and motor oil. However, once a liquid ignites, the damage caused by flammable and combustible liquids is about the same. In broad terms, the lower the flash point, the higher the fire risk. Although an in-depth discussion on flash point is outside the scope of this article, the flash point is a general indication of how likely ignition is. The temperature at which sufficient vapors are released is known as the flash point, a key concept. This article focuses on the control/suppression portion.įirst, the liquid itself is not flammable, but its vapors are. A good level of fire safety comprises construction features, fire prevention principles, and fire control/suppression systems once a fire has started. Such evaluations and the specification for a commensurate level of protection take significant experience, not only with the standards used, but also with sound fire protection principles and historical fire test data. The proper protection of flammable liquid storage is not an easy undertaking and, as the Sherwin-Williams fire showed, the mere presence of sprinklers in a building does not mean that adequate fire protection is provided. By 1996, both the NFPA and the FM Global standards were significantly revised to include the results of these tests. That fire became the impetus for extensive full-scale testing of various fire protection schemes during the late 1980s and 1990s. One of the more notable events that defined the hazards and current protection needs of flammable liquid storage was the 1987 Sherwin-Williams distribution warehouse fire that completely destroyed a large sprinkler-protected warehouse.