FIGURES (Continued) 



Page 



89 . Sea cushion with tire chain net 305 



90. Corrosion process 319 



91 . Corrosion process in pipelines 320 



92. Examples of design details to aid coating application 323 



93. "Palmed" application of epoxy underwater coating 329 



94. Crossed linked epoxy phenolic 330 



95. Surface blasting profiles 336 



96. Diagram of simple impressed current cathodic protection 350 



97. Copper sulfate electrode test circuit 354 



98. Potentials related to time on interruption of cathodic 



protection current 359 



99 . Circuit for off potential measurement 360 



100. Anode in carbonaceous backfill 364 



101. Anodes in other backfill materials 364 



102. Chart of anode spacing (impressed current method) 366 



103 . Chart of anode spacing (galvanic anode method) 366 



104. Cross section of wharf used in example 369 



