. Cathodic protection system for fleet moorings. Ocean engineering; Buoys; Moorings. Figure 2. Test mooring buoy during sandblasting. Two sea chests were built into opposite sides of the buoy cone, each to house a cathodic protection unit. The modified buoy was sandblasted to white metal (Figure 2) and coated with the phenolic mastic coating system described in Reference 3. The automatic control heads were bolted to threaded studs located inside the sea chests, and 80-pound magnesium anodes were secured between them and the lower mounting brackets (Figure 3). Nylon spacers were used to isolate
. Cathodic protection system for fleet moorings. Ocean engineering; Buoys; Moorings. Figure 2. Test mooring buoy during sandblasting. Two sea chests were built into opposite sides of the buoy cone, each to house a cathodic protection unit. The modified buoy was sandblasted to white metal (Figure 2) and coated with the phenolic mastic coating system described in Reference 3. The automatic control heads were bolted to threaded studs located inside the sea chests, and 80-pound magnesium anodes were secured between them and the lower mounting brackets (Figure 3). Nylon spacers were used to isolate the anodes electrically from the buoy; thus, current from the anodes had to pass through the control heads and the connected ground cables before reaching the buoy. Each of the two ground cables was threaded through a series of chain links that were welded to the bottom flange and then was welded to the flange at a point opposite the sea chest from which it came (Figure 4). Immediately before placing the buoy in service, a square-foot section of coating on the underwater portion of the buoy was sandblasted to bare steel (Figure 4), giving an exposed steel specimen on which the effect of cathodic protection could be determined Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Drisko, Richard W; Naval Civil Engineering Laboratory (Port Hueneme, Calif. ). Port Hueneme, Calif. : Naval Civil Engineering Laboratory
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