_i 3.0- 















P 









CO 









z 2.0- 









o 









\ 









2 









X 









p 









o '•<?- 









p °-2" 



P Q8- 











ANODE SPACING 





~ 0.7- 









5 0.6- 





S~ 3.0 M 





w 0.5- 





/V- 4.6 M 





2 





//>— 6.1 M 





§0.4- 





v ///S- 7 6 M 





?03- 









UJ 









P 









5 02- 









< 









t- 









co 









CO 









LlI 









tt | 









c 



1 1 

 ) 5 10 



I 1 I 

 15 20 25 30 





NO. 



OF ANODES 



Figure 102. Chart of anode spacing (impressed current method) 



y n 



6.0- 







5.0- 



\ APPROX. INTERNAL ANODE 

 \ RESISTANCE IN 300 OHM/CM 





=> 4.0- 



\ BACKFILL 





o 



CO i n 



\ 17 LB MAG ANODE- 0.96 OHM 





3.0- 



. \ 1.5 M LONG ANODE: 0.60 OHM 





<_> 







\ _ 







2 2. 0h 







X 







p 







o 



\ >v ^17 LB PACKAGED 





p 



\ N. / MAGNESIUM ANODES 





2 I.0- 



\ X. / AT 4.6 M SPACING 





z 0-9- 







i&?= 







I 0.6- 







°as- 







^ 0.4- 







u 







Z Q3- 







< 









X|;5 M LONG ZINC OR 





co 0.2- 



MAGNESIUM ANODES AT 





UJ 



cr 



4.6 M SPACING 





0.1 - 



i i i 



( 



D 5 10 15 20 





NO. OF ANODES 



Figure 103. Chart of anode spacing (galvanic anode method) 



366 



