Compressed gases have been defined by the U.S. Department of Transportation (DOT) as a hazardous material, or "a substance or material which has been determined by the Secretary of Transportation to be capable of posing an unreasonable risk to health, safety and property when transported in commerce" (49 CFR 171.8). DOT defines a compressed gas under 49 CFR Chapter 1 Subpart G Section 173.300. The definition covers any material or mixture having an absolute pressure in excess of 40 pound per square inch (psi) at 70 F , or having an absolute pressure in excess of 104 psi at 130 F, or any liquid flammable material having a vapor pressure exceeding 40 psi at 100 F.
DOT regulations (173.34) specifically prohibit the transportation in commerce of a charged cylinder which is defective in some manner. This includes leaks, bulges, defective or inoperable valves, or damage from abuse, fire, heat, corrosion or rusting. DOT regulations also require that each hazardous material be positively identified prior to transportation . This also applies to any "empty container" with the residue of a hazardous material in accordance with
(49 CFR 172.203(e)). When the contents are not known, they must be identified prior to transport.

IES employs in-house staff Federally certified in transport document preparation, packaging, and labeling. We provide a full range of transportation sevices in accordance with 49CFR requirements.

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