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Thii safely bell and lifeline setup per mils the worker lo move up ond down. The anchoring mechonism will lock instonily in cose of foil. (Photoi Research ond Trading Corp.
stresses that rarely exceed the static weight of the user. Emergency use means stopping a man when he falls--every part of the belt may' be subjected to an impact loading many times the weight of the wearer.
A window cleaner's belt, for ex ample, is subject to a moderate load most of the time it is used. It is sub jected to a severe loading, however, if the man falls and only one termi nal of the belt is attached. A belt for a person who leans back as he works should, therefore, have two D-rings. one on each side of the belt, to which a throw rope or lanyard can be attached. The rope then is connected to an anchorage.
A harness-type safety belt distri butes the shock of an arrested fall. The harness permits a fallen person to be lifted with his back straight, rather than bent over a waist strap. This makes rescue easier if the vic tim is unconscious, buried, or must be taken out through a manhole.
If long falls are possible, the harness should be designed to dis tribute the impact force over the legs and eldest as well as the waist, and, where possible, a shock absor ber or decelerating device can be used. To prevent a long fall, the line should be tied off overhead and should be as short as movements of the worker will permit.
Inspection ond core
Belts and lifelines should be checked each time they are to be used. At least once every three months, belts should be examined by a trained inspector.
They should be maintained ac cording to manufacturer's instruc tions.
Belts--Leather belts must be care fully checked for cuts and scratches on either side. Any deep vertical cut (crosswise to the belt) justifies discarding the belt. Lengthwise cuts should be viewed critically, and un less they are small, the belt should be discarded. Web belts should be examined for wom and torn fibers. When a number of the outer fibers are wom or cut through, the belt should be discarded. Belt hardware should be examined, and worn parts replaced. If the belt is riveted, each rivet should be carefully in spected for wear around the rivet hole.
Lifelines--The outer surface of manila rope should be examined for cuts and for wom or broken fibers. Rope should be discarded when it has become smaller in diameter or has acquired a smooth look. Inner fibers or manila rope should be examined for breaks, dis coloration, and deterioration. If it shows any of these signs, the rope should be discarded.
A steel wire rope should be ex amined for broken strands, rust, and kinks that may weaken it. Ropes must be kept clean, dry, and rust free. They should be lubricated fre quently, especially before use in acid atmospheres or before exposure to salt water. After such use, wire rope should be carefully cleaned and again coated with oil.
Special Clothing
Impervious clothing
This type of clothing is used for protection against dusts, vapors, moisture, and corrosive liquids. There are many types of impervious materials that are fabricated into clothing of all descriptions, depend ing on the hazards. The types of clothing range from aprons and bibs of sheet plastic to garments that
completely enclose the body from head to foot and contain their own air supply.
Materials used include natural rubber, synthetic rubber, neoprene, vinyl, polypropylene, and polyethy lene films and fabrics coated with them. Natural rubber is not suited for use with oils, greases, and many organic solvents and chemicals. Make sure that the clothing selected will protect against the hazards in volved. Special impervious type clothing is required to be worn by employees whose work exposes them to carcinogens.
Cold weather clothing In recent years thermal insulating
underwear has become popular among outdoor workers because of its light weight. Two types are gen erally available. One is a thermal knit cotton patterned after regular underwear; the other consists of quilted materials, such as polyester fiber quilted between nylon. While this material does not catch fire any easier than cotton, once it starts burning, the nylon and polyester melt, forming a hot plastic mess not unlike hot pitch, which can adhere to skin and cause serious burns. Ouilted insulating underwear is now
High-viiibility veli ond millt worn by o Iroftic mon jignol hi* pretence to on-coming tt offic. Simple deign petmitt wear wilh other opporel. |Photo.Aquodor Piostici, Inc.)
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