Nace CP 1, Course Manual

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RP0285-2002
NACE International i
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Foreword
This standard recommended practice presents procedures and practices for effective control of
external corrosion on underground storage tank (UST) systems by cathodic protection (CP). It is
intended to be used by competent corrosion professionals as a reference for corrosion control of
buried metallic underground storage tanks including those used to contain oil, gas, and water
using CP. Specifically addressed is CP of:
(a) Existing bare and coated mild steel tanks;
(b) New coated mild steel tanks;
(c) Metallic piping and flexible connectors; and
(d) Other metallic components.
For accurate and correct application of this standard, this standard must be used in its entirety.
Using or referring to only specific paragraphs or sections can lead to misinterpretation and
misapplication of the recommendations and practices contained in the standard.
This standard was originally published in 1985 by Task Group T-10A-14 as “Control of External
Corrosion on Metallic Buried, Partially Buried, or Submerged Liquid Storage Systems.”
The
standard was revised in 1995 by Task Group T-10A-14 on Corrosion Control of Underground
Storage Tank Systems, a component of Unit Committee T-10A on Cathodic Protection. It was
revised in 2001 by TG 011 on Corrosion Control of Underground Storage Tank Systems by
Cathodic Protection. Task Group 011 is administered by Specific Technology Group (STG) 35 on
Pipelines, Tanks, and Well Casings and is sponsored by STG 03 on Protective Coating and
Linings
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Immersion/Buried and STG 05 on Cathodic/Anodic Protection. This standard is issued by
NACE International under the auspices of STG 35 on Pipelines, Tanks, and Well Casings.
In NACE standards, the terms shall, must, should, and may are used in accordance with the
definitions of these terms in the NACE Publications Style Manual, 4th ed., Paragraph 7.4.1.9. Shall
and must are used to state mandatory requirements. Should is used to state that which is considered
good and is recommended but is not absolutely mandatory. May is used to state that which is
considered optional.
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