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 LANTNAVFACENGCOM A&E GUIDE
4/17/93
(1) Underground Fuel Storage Tanks (40 CFR 280 and 281)
(2) Fuel and POL Pipelines (49 CFR 195)
(3) Natural Gas Pipelines (49 CFR 192)
(4) Liquified Natural Gas Facilities (49 CFR 193)
B. In addition to the structures above, CP and protective coatings must be
provided per NAVFACENGCOM policy for the following types of buried/submerged
metallic structures regardless of soil or water corrosivity:
(1) Underground oxygen piping
(2) The waterside of new steel sheetpile bulkheads
(3) New steel pile pier supports and steel fender piles
(4) Steel water storage tanks (elevated or reservoirs)
(5) Underground structures storing hazardous products
(6) Steel utility piping in soils having resistivity below 100,000 ohm-cm
(7) The exterior bottom of aboveground POL tanks
(8) Hydraulic piston cylinders for elevators and lifts (standard CP design)
C. The requirement for CP, protective coatings and joint bonding on the
following types of structures must be determined by economic analysis and the
recommendations of a qualified corrosion engineer based on soil resistivity or
corrosivity if submerged:
(1) Ferrous metal gravity sewer lines (any soil resistivity)
(2) Existing steel waterfront structures
(3) Buried ductile/cast iron pipe (soil resistivity above 10,000 ohm-cm:
joint bonds only)
(4) Concrete encased rebar in piles for piers, seawalls and quay walls.
4-10
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