Document nkED1zLrO7vB6q9Yrep4YaK78

Motorized Equipment ing truck has been developed, and informa tion about obtaining the device is available from the Nabonal Safety Council Where a number of men are working and various types of equipment are being used, the dnver should call upon another employee to signal whether or not the path is clear be fore backing or making any other movement A signalman should always take a position within sight of the dnver The Department of Transportation requires that trucks be equipped with back-up lights for night work Insofar as possible, backing, especially without a guide, should be attempted only to the left because the dnver is seated on the left side where he has a good view of the area into which he is backing Moving forward. Senous accidents also occur dunng forward movements The haz ard to workmen increases with the greater height and capacity of trucks A dnver often fails to see workmen crossing from the nght immediately ahead of the truck Thus, dnvers often are required to blow two blasts on the hom before starting forward Procedures on dumps Truck operations on dumps and banks involve the danger of the truck's going over the crest while dumping a load A trained dumpman is probably the best insurance against loss of life and damage to equipment Dnvers are required to follow his instructions and signals, especially in backing to dump Prearranged signals must be used at all bmes A dumpman must know how close to the edge a truck can approach safely under var ious weather condibons He posibons him self on the driver's side of the truck (a) so that his signals can be easily seen and (b) so that, since the dnver will have him in sight, there will be less danger of his being run over Further to protect the dumpman, the dnver should turn from his left when backing, so that he will have the maximum view of the area into which the rear of the truck is mov ing Also, the dumpman must stay clear of trucks to avoid being struck by matenal fall ing from them Left-hand dnvmg also reduces the danger of going over the crest, especially m the operabon of side dump trucks, since the dnver is on the crest side To avoid hitbng overhead lines or other low clearances, the dump box should be low ered as soon as the truck clears the dumped load To help prevent the crest from caving in, stock piles and dumps frequently are graded uphill toward the crest so that trucks back up the slope Loads also may be dumped a safe distance from the crest and then leveled by a grader or bulldozer Strongly built cabs and cab protectors on canopies on trucks are effective in prevent ing injunes if vehicles overturn By staying in the cabs and not attempbng to jump out when their trucks started to roll or slide over an embankment, dnvers can escape senous injury Cabs also provide protecbon from bad weather and from dust Holes, ruts, and similar rough places on dumps and roadways may cause the front wheels of a truck to cramp so that the steer ing wheel spins mjunng fingers, arms, and nbs, particularly if the truck is not provided with power steenng Cnpping the wheel on the outside and not by the spokes, dnving at reduced speed, and observing the ground ahead for rough places will help the dnver avoid such injunes Floodlighting dunng night operabons helps to prevent accidents Protective frames for heavy equipment* All bulldozers, tractors, and similar equip ment used m cleanng operabons should be equipped with substantial guards, shields, canopies, and gnlles to protect the opera tor from falling and flying objects (Fig 46-13) Crawlers and rubber-tired vehicles, selfpropelled pneumabc-tired earth movers, water tank trucks, and similar equipment should be equipped with steel canopies and safety belts m order to protect operators from the hazards of rollover (Fig 46-14) A canopy and its supports should be de signed and made to be able to support not less than two times the weight of the prime mover This calculation is to be based on the 0 Recommendations taken from U S Army Corps of Engineers' Manual EM-385-1-1, General Safety Requirements, 1 March 1967 1560