UFC 3-570-06
JANUARY 31 2003
Table 2-4. Current Requirements for Cathodic Protection of Coated Steel
MILLIAMPERES
PER SQUARE METER (FOOT)
STRUCTURE
BARE
COATED
COATING
EFFICIENCY
Pipeline, epoxy or other high 10.76(1)
0.0100.054(0.0010.005)
99.5 - 99.9
performance coating
Pipeline, reinforced coal tar
10.76(1)
0.0540.269(0.0050.025)
97.5 - 99.5
or asphalt enamel
Pipeline, grease coating with 10.76(1)
0.5381.615(0.050.15)
85.0 - 95.0
wrapper
Pipeline, asphalt mastic "
10.76(1)
0.0010.005(0.0010.005)
99.5 - 99.9
thick
Pipeline, old asphalt or other 10.76(1)
0.5383.767(0.050.35)
65.0 - 95.0
deteriorated coating
Pipeline, old paint coating
10.76(1)
1.0760.522(0.100.30)
70.0 - 90.0
Tank bottoms
32.29(3)
0.53821.529(0.052.00)
33.3 - 98.3
Tanks for cold potable water 32.29(3)
0.53821.529(0.052.00)
33.3 - 98.3
Tanks for cold sea water
53.82(5)
0.53843.056(0.054.00)
20.0 - 99.0
Hot potable water tanks
53.82(5)
0.52232.292(0.303.00)
40.0 - 94.0
Steel sheet piling fresh water 53.82(5)
1.07616.146(0.101.50)
70.0 - 98.0
side
Steel sheet piling sea water 53.82(5)
1.07621.529(0.102.00)
60.0 - 98.0
side
Steel sheet piling soil side
21.5 (2)
0.2154.304(0.002-0.40)
80.0 - 99.0
2-6
GALVANIC CATHODIC PROTECTION. In galvanic anode systems, the
2-27
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