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USACE / NAVFAC / AFCESA
UFGS-13112N (March 2000)
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Preparing Activity: NAVFAC
Replacing without revision
NFGS of same number and date
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated 23 June 2005
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SECTION 13112N
CATHODIC PROTECTION SYSTEM (STEEL WATER TANKS)
03/00
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NOTE: This guide specification covers the
requirements for steel water tank cathodic
protection systems using impressed current systems
and galvanic anodes.
Comments and suggestions on this guide specification
are welcome and should be directed to the technical
proponent of the specification. A listing of
technical proponents, including their organization
designation and telephone number, is on the Internet.
Recommended changes to a UFGS should be submitted as
a Criteria Change Request (CCR).
Use of electronic communication is encouraged.
Brackets are used in the text to indicate designer
choices or locations where text must be supplied by
the designer.
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NOTE: One of the major factors influencing
selection of the type of cathodic protection system
is the resistivity of the water involved. When the
water resistivity is higher than 10,000 ohm-cm,
impressed current systems are usually used. Other
considerations include availability of electric
power and the costs of installation, operation and
maintenance. Where relatively small amounts of
current are required or where energy is not readily
available and water resistivity is low, galvanic
anodes may be applied. Where relatively large
currents are required and reasonable access to power
is available, the impressed current system will
generally be found to be more economical. The
requirements for the cathodic protection systems
should be determined by a corrosion engineer
following the criteria, design, and installation
recommendations included in the National Association
of Corrosion Engineers Standard; RPO-388, "Impressed
SECTION 13112N
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