PROCEDURES AND PRECAUTIONS FOR LIFTING OPERATIONS

When the signalman desires to give the operator any instructions other than those provided by the established  signal  system,  the  operator  should  be instructed to stop all motion FIRST.


Hand signals can be used effectively when the distance between the operator and the signalman is not great,  but  two-way  radios  should  be  used  when  the distance  or  atmospheric  conditions  prevent  clear visibility. Adequate   lighting   and   signalling arrangements  must  be  available  during  night  work,  and the equipment must not be operated when either is inadequate.

PROCEDURES AND PRECAUTIONS FOR LIFTING OPERATIONS



The  most  important  rigging  precaution  is  to determine the weight of all loads before attempting to lift them, to make ample allowances for unknown factors, and to determine the available capacity of the equipment  being  used.  In cases where the assessment of load weight is difficult, safe load indicators or weighing devices should be fitted. This chapter also includes a section dealing with the estimation of load weights.

It is equally important to rig the load so that it is stable. Unless the center of gravity of the load is below the hook, the load will shift.

The  safety  of  personnel  involved  in  rigging  and hoisting operations largely depends upon care and common  sense.  Remember  these  safe  practices.

1. Know the safe working load of the equipment and tackle being used. Never exceed this limit.
2. Determine the load weight before rigging it.
3. Examine all hardware, equipment, tackle, and slings   before   using   them   and  survey   defective components.  Discarded  equipment  may  be  used  by someone not aware of the hazards or defects.
4. Never can-y out any rigging or hoisting operation when the weather conditions are such that hazards to personnel, property, or the public are created. You must carefully examine the size and shape of the loads being lifted to determine if a hazard exists during high wind speeds.  Avoid  handling  loads  that  have  large  wind- catching  surfaces  that  could  cause  loss  of  control  of  the load during high or gusty winds.  The wind can critically affect  the  loading  and  load-landing  operation  and  the safety of the personnel involved (fig.).