Life-jackets

The density of liquid carbon dioxide at room temperature is 0.80 grams/ml. How large a cartridge of liquid C02 must be provided to inflate a life jacket of 4.0 liters capacity at STP ... 

Under pressure in a closed mould during gelation. After cooling and demoulding, the expanded parts are re-heated (post-expansion) to obtain closed-cell foams such as life jackets. 

Materials such as these, used in inflatable life jackets, boats, rafts, and other buoyancy equipment, can be welded by means of appropriate techniques. 

The air in a life jacket allows the person wearing the jacket to float on the water. 

Toso-CSM . [Tosoh] Chhxosulfonaied polyethylene elastomer for elec, cables, rubber coatings, life boats, life jackets, windbreakers, escalator handrails, paints, coatings, coated fabrics, floor riles, hoses, rolls, machine pans. 

Self-inflating appliances use compressed gases (usually nitrogen, carbon dioxide, or some other nontoxic, nonflammable gas or gas gener-ant) to fill life jackets, life rafts, and marine and aircraft evacuation slides. Gas generator assemblies for larger equipment may also be transported independently as spare parts. 

A closed-cell foam makes a better buoy or life jacket because the cells do not fill with liquid. In cushioning applications, however, it is desirable to have compression to cause air to flow from cell to cell and thereby dissipate energy, so the open-cell type is more suitable. Foamed plastics can be produced in a wide range of densities—from 0.1 Ib/ft. (0.0016 g/cm ) to 60 Ib/ft. (0.96 g/cm )—and can be made flexible, semirigid, or rigid. 

Closed-cell foams result when the decomposition and gelation are carried out in a closed mold almost filled with plastisol. After the heating cycle, the material is cooled in the mold under pressure until it is dimensionally stable. The mold is then opened, and the free article is again subjected to heat (below the previous molding temperature) for final expansion. Protective padding, life jackets, buoys, and floats are some items made by this process. 

Because of its impermeability, butyl rubber finds many uses in the manufacture of inflatable items such as life jackets, life boats, balloons, and inner tubes. The excellent resistance it exhibits in the presence of water and steam makes it suitable for hoses and diaphragms. Applications are also found as flexible electrical insulation, shock and vibration absorbers, curing bags for tire vulcanization, and molding. 

The impermeability of the polysuldife rubbers to air and gas has promoted the use of these materials for inflatable products such as life jackets, life rafts, balloons, and other inflatable items. 

Poaming in place, e.g., steering wheel, floats (life jacket, surfboards, buoys), heat insulation elements, protective clothing, prostheses, seals, noise protection... 

Uses Dielec, insulator (high-voltage cables) foam (sports equip., life jackets, protective clothing, pipe insulation, vehicle sound insulation/floor coverings) domestic floor heating piping... 

Policy level, e.g. lack of a clear policy that life-jackets should be w om... 

Organisational level, e.g. no life-jackets available for the new shift... 

Life-jackets or buoyancy aids must be worn where there is a foreseeable risk of drowning when working on or near water and at all times while working on boats. Risk assessments can be used to identify areas which are safe and where no buoyancy equipment is required (e.g. accommodation blocks on a jack-up platform). Equally areas where there is a high risk should reinforce procedures. 

A life-jacket is a personal safety device which, when fully inflated (if inflatable), will provide sufficient buoyancy to turn and support even an unconscious person s, face upwards within five seconds (ten seconds if automatically inflated). The person s head will be supported with the mouth and nose well clear of the water. 

Some people are reluctant to wear life-jackets as they find them bulky and restrictive. However, either an automatically inflatable life-jacket or a type which is inflated by a manual pull-cord should overcome these problems. These are usually compact and allow for a full range of movement. 

A wide range of life-jackets and buoyancy aids is available and they should be marked with the relevant BS EN (see Appendix 3) and selection will depend on such matters as the type of water conditions, the work being undertaken and the protective clothing being worn. Further guidance is given in HSE Agricultural Information Sheet No. 1 (Revised) Personal buoyancy equipment on inland and inshore waters, HSE (1999). 

Where appropriate, life-jackets should be weld protected. 

The contractors consider that the key to any transfer is ensuring it is properly managed. Any means of personnel transfer between marine craft must be covered by a complete risk assessment and methodology personnel must wear stipulated PPE, transfer suits and life-jackets and the transfer must be overseen by a responsible person on the jack-up barge using a crane that has a quick rope speed to move the personnel carrier quickly onto and away from the vessel as required. 

Is all safety equipment, where applicable, in date for inspection/test, correctly located and in good condition, e.g. life-rafts, flare packs, life-rings/lines, man overboard smokes/lights, life-jackets, first aid kits, eye wash bottles, foghorn and VHF radio ... 

Has adequate PPE, e.g. hard hats, safety boots, overalls, gloves, dust/vapour masks, life-jackets, buoyancy aids, immersion suits, goggles, ear protection and wet weather gear been provided ... 

BS 8093 Code of practice for the use of safety nets, containment nets and sheets on constructional works BS EN 361 Full body harness BS EN 393 Lifejackets and personal buoyancy aids Lifejackets 50N BS EN 394 Lifejackets and personal buoyancy aids Additional items BS EN 395 Life jackets and personal buoyancy aids Lifejackets lOON BS EN 396 Life jackets and personal buoyancy aids Lifejackets 150N BS EN 399 Life jackets and personal buoyancy aids Lifejackets 275N... 

PPE is defined as all equipment designed to be worn, or held, to protect against a risk to health and safety. This includes most types of protective clothing, and equipment such as eye, foot and head protection, safety harnesses, life-jackets and high-visibility clothing. 

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