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The environment may be contaminated by hazardous materials, the diving medium may be inherently a hazardous material, or the environment in which the diving medium is situated may include hazardous materials with a significant risk of exposure to these materials to members of the diving team. Special precautions, equipment and procedures are ...
A non-return valve in the air supply line to the helmet failing (or absent on the earliest models of this type of diving suit), accompanied by a failure of the air compressor (on the surface) to pump enough air into the suit for the gas pressure inside the suit to remain equal to the outside pressure of the water, or a burst air supply hose.
Via a neck dam – The more recent development is for the helmet to clamp to a neck dam, supported by a rigid ring, or clamped to the lower edge of the helmet. The neck dam seals against the skin of the divers neck in the same way that the neck seal of a dry suit works, making the helmet a sealed unit independent of the suit, which may be a dry ...
"Dangerous goods" (also known as "hazardous materials" or "HAZMAT" in the United States) may be a pure chemical substance (e.g. TNT, nitroglycerin), mixtures (e.g. dynamite, gunpowder) or manufactured articles (e.g. ammunition, fireworks). The transport hazards that they pose are grouped into nine classes, which may be subdivided into divisions ...
Standard diving dress, also known as hard-hat or copper hat equipment, deep sea diving suit or heavy gear, is a type of diving suit that was formerly used for all relatively deep underwater work that required more than breath-hold duration, which included marine salvage, civil engineering, pearl shell diving and other commercial diving work, and similar naval diving applications.
Turnout gear used by firefighters in the Czech Republic: Common [turnout coat and turnout pants (dark with reflective safety stripes on the left), hazmat suit (yellow in the middle), and fire proximity suit (silver on the right) Firefighters in Chicago wearing rubber three-quarter boots and jacket Firefighters in Montreal in full turnout gear during a fire