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GENERAL 55-5
<br /> Table 1-1.2(b), Quantities Fxempt from the Requirements of NFPA (b) Materials, in the form and thickness used,other than as
<br /> 55 in Occupancies Other than Industrial,Mercantile,and Storage described in (a), that have neither a flame spread rating
<br /> greater than 25 nor evidence of continued progressive
<br /> Gas Quantities combustion, and of such composition that surfaces that
<br /> Toxic Gas (Health 4)' 0 scf(0 In
<br /> s) would be exposed by cutting through the material on
<br /> Toxic Gas (Health 3)' any plane would have neither a flame spread rating
<br /> Liquefied 100 lb (45.3 kg) greater than 25 nor evidence of continued progressive
<br /> Compressed 400 scf(11.3 m) combustion
<br /> PyrophFlammable
<br /> Gas 0 scf(0 ms) Liquefied Gas. A gas, other than in solution, that in a
<br /> C^ , Flammable Gas packaging under the charged pressure exists both as a liquid
<br /> Liquefied 5 Ib (2.2 kg)
<br /> Compressed 75 scf(2.1 m )s and a gas at a temperature of 68°F (20°C).
<br /> Oxidizing Gas 400 scf(11.3 ms)b Material Safety Data Sheet (MSDS). Written or printed
<br /> Nonflammable Gas 400 scf(11.3 in) material concerning a hazardous material that is prepared in
<br /> 'Health hazard rating in accordance with NFPA 704,Standard System I accordance with the provisions of OSHA 29 CFR 1910.1200.
<br /> for the Identification of the Hazards of Materials for Emergency Response. Nesting. A method of securing cylinders upright in a tight
<br /> l Unlimited for residential health care applications. mass using a contiguous three-point Contact system whereby
<br /> all cylinders in a group have a minimum of three contact
<br /> points with other cylinders or a solid support structure (i.e.,
<br /> Cylinder. A portable compressed gas container,fabricated wall, railing).
<br /> to or authorized for use by the U.S.Department of Transporta- Nonflammable Gas. A gas that does not meet the defini-
<br /> tion (DOT), or fabricated to Transport Canada (TC) or the tion of a flammable gas.
<br /> "Rules for the Construction of Unfired Pressure Vessels,"Sec-
<br /> tion VIII,ASME Boiler&Pressure Vessel Code. OSHA. The Occupational Safety Health Administration
<br /> )distributor: Any organization that repackages gases and of the U.S. Department of Labor.
<br /> handles compressed gas containers but does not consume Oxidizing Gas. A gas that can support and accelerate com-
<br /> co.mpressed gases. bustion of other materials.
<br /> Existing Facilities. An existing facility storing, using, or Pyrophoric Gas. A gas that will spontaneously ignite in air
<br /> handling compressed or liquefied gases that is not in strict at or below a temperature of 130'F(54.4°C).
<br /> compliance with this standard shall be permitted to continue Scf. One cubic foot of gas at 70°F (21°C) and 14.7 psia
<br /> in operation where such continued operation does not consti- (an absolute pressure of 101 kPa).
<br /> tute a distinct hazard to life or adjoining property.
<br /> ;
<br /> Fire Area. The floor area enclosed and bounded by fire Shall. Indicates a mandatory requirement.
<br /> walls,fire separation assemblies,or exterior walls of a building Standard. A document, the main text of which contains
<br /> to restrict the spread of fire. only mandatory provisions using the word"shall" to indicate
<br /> equirements and which is in a form generally suitable for
<br /> r
<br /> Flammable Gas. A gas that is flammable at atmospheric mandatory reference by another standard or code or for adop-
<br /> temperature and pressure in a mixture of 13 percent or less tion into law. Nonmandatory provisions shall be located in
<br /> I (by volume) with air, or that has a flammable range with air an appendix, footnote, or fine-print note and are not to be
<br /> wider than 12 percent, regardless of the lower limit. considered a part of the requirements of a standard.
<br /> Gas Manufacturer. A business that produces compressed Storage. An inventory of compressed or liquefied gases in
<br /> 1.bases or fills portable gas cylinders or containers. containers that are not in the process of being examined,
<br /> Handling. Moving, connecting, or disconnecting a com- serviced, refilled, loaded, or unloaded.
<br /> pressed or liquefied gas cylinder. Toxic Gas. A gas having a health hazard rating of 3 or..4
<br /> Hazard Rating. The numerical rating of the health,flam- as defined in NFPA 704, Standard System for the Identification of
<br /> mabi#ity, and self-reactivity hazards of the material, including the Hazards of Materials for Emergency Response.
<br /> its reaction withwater,as defined in NFPA 704,Standard System Treatment System. An assembly of equipment capable of
<br /> C for the Identification of the Hazards of Materials for Emergency Re- processing a toxic gas and reducing the gas concentration to
<br /> sponse. a predetermined safe level at the point of discharge from the
<br /> Limited-Combustible. As applied to a building construc_ system to the atmosphere.
<br /> tion material—a material not complying with the definition Use. The consumption of a compressed or liquefied gas
<br /> of noncombustible material that, in the form in which it is in a nonrecoverable manner.
<br /> used, has a potential heat value not exceeding 3500 Btu/lb
<br /> ( (8141 kj/kg), and that complies with one of the following User. An individual, group, or organization who utilizes
<br /> \. paragraphs(a)or(b).Materials subject to increase in combos- the compressed or liquefied gas in a nonrecoverable manner.
<br /> tibility or flame spread rating beyond the limits herein estab- Valve Outlet Caps and Plugs. Removable caps and plugs
<br /> lished through the effects of age, moisture, or other that form a gastight seal on valve outlets of certain gases and,
<br /> atmospheric conditions shall be considered combustible. in some cases, provide valve thread protection.
<br /> (a) Materials having a structural base of noncombustible ma- Valve Protection Device. A device attached to the neck
<br /> terial, with a surfacing not exceeding a thickness of %s ring or body of the cylinder for the purpose pf protecting,the
<br /> in. (3.2 mm) that has a flame spread rating not greater cylinder valve from being struck or damaged ffotT};_impact
<br /> t than 50 resulting from a fall or an object striking the cylinder.
<br /> 1998.8ditlon
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