TO SHIP CONSTRUCTION. 221 



The approval of the Society will be given to any system of welding which com- 

 plies with these regulations, and consideration will be given to any alternative con- 

 structional arrangements which may be submitted for approval. 



TENTATIVE REGULATIONS FOR THE APPLICATION OF ELECTRIC ARC WELDING TO SHIP 



CONSTRUCTION. 



A. System of IV elding and Workmanship. 



1. The system of welding proposed to be used must be approved and must com- 

 ply with the regulations and tests laid down by the committee. 



2. The process of manufacture of the electrodes must be such as to ensure 

 reliability and uniformity in the finished article. 



3. Specimens of the finished electrodes, together with specifications of the na- 

 ture of the electrodes, must be supplied to the committee for purposes of record. 



4. The committee's officers shall have access to the works where the electrodes 

 are manufactured, and will investigate, from time to time as may be necessary, the 

 process of manufacture to ensure that the electrodes are identical with the approved 

 specimens. 



5. Alterations from the process approved for the manufacture of electrodes 

 shall not be made without the consent of the committee. 



6. The regulations for the voltage and amperage to be used with each size of 

 electrode, and for the size of electrode to be employed with different thicknesses of 

 material to be joined, are to be approved by the committee. 



7. The committee must be satisfied that the operators engaged are specially 

 trained and are experienced and efficient in the use of the welding system proposed 

 to be employed. 



8. Efficient supervisors of proved ability must be provided, and the proportion 

 of supervisors to welders must be submitted for approval. 



B. Details of Construction. 



g. The details of construction of the vessel and of the welds are to be submitted 

 for approval. 



10. Before welding, the surfaces to be joined must be fitted close to each other 

 and the methods to be adopted for this purpose are to be approved. 



11. All butt and edge connections are to be lapped or strapped. 



12. With lapped connections the breadths of overlaps of butts and seams and 

 the profiles of the welds are to be in accordance with the following table : — 



