158 OPERATIONAL AND EMERGENCY BILLS 



Collateral Duties — The collateral duties of the machinists will be to assist the machanics 

 in any repair work. The machinists will also assist the experimental group as requested, and 

 will chip, wire brush, and paint where required, and will assist, in general, in keeping the 

 vessel clean and in safe operating condition. 



Riggers 



Primary Duties — The primary duties of the riggers are to give standard signals to the 

 crane operator, make hookups of all loads that are hooked to a crane or hoist, be familiar with 

 the safe work-load tables, be responsible for the safety of all hitches, and be responsible for 

 the safe moving of any load. The riggers will also splice wire, nylon, and manila ropes as 

 necessary. 



Collateral Duties — The collateral duties of the riggers will be to assist the experimental 

 group as required, to chip, wire brush, and paint where required, and to assist, in general, in 

 keeping the vessel clean and in a safe operating condition. 



Crane Operators 



Primary Duties — The primary duties of the crane operators are to familiarize themselves 

 with the crane mechanism and its proper care, and with all operating safety rules. At the be- 

 ginning of each shift the operators shall examine their crane for any defective parts or any 

 other condition which would make the crane unsafe. Upon finding such a condition, the operator 

 will immediately notify his supervisor. When operating the crane, the operator will accept 

 only standard crane signals given by a qualified rigger. 



Collateral Duties — The collateral duties of a crane operator will be to assist the experi- 

 mental group as requested, to chip, wire brush, and paint where required, and to assist, in 

 general, in keeping the vessel clean and in a safe operating condition. 



General Safety Rules for Rigging and Crane Operation 

 Safety Rules for Riggers 



1. Safety shall always be given first consideration in material-handling operations. The 

 rigger shall constantly bear in mind that the safety of others, the equipment, and himself de- 

 pends upon the safe movement of materials. 



2. Only a designated rigger shall give signals to a crane operator. The signals shall be 

 standard crane signals. 



3. The rigger shall be responsible for the safety of all hitches and for the save moving of 

 any load that is hooked to a crane or hoist. 



4. All rigging equipment shall be checked for defects before being used. When in doubt 

 about the safety of any equipment, the rigger will consult his supervisor. 



5. Hitching equipment shall be properly applied so that the load can be lifted in a secure 

 and stable position without danger of dropping, shifting, or turning. 



6. A rigger shall not permit any load to be moved if its weight exceeds the posted capacity 

 of the crane or the permissible safe load for the slings being used. 



7. Wire rope and fiber slings shall be protected by the use of softeners at the sharp edges 

 of a load. 



8. No one shall work under a suspended load unless the load has been adequately supported 

 from the deck. All conditions of this type must be approved by the supervisor. 



