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Description / Abstract:
This standard provides a procedure that shall be used to (1)
assess structures for atmospheric corrosion; (2) assess the level
of risk to the structure in terms of corrosion attack and
degradation to the existing coating system; (3) make informed
decisions based on those findings as to whether coating repair is
needed, and if so, to what extent; and (4) apply repair coatings to
the structure if applicable. This standard applies to the repair of
above-grade atmospheric coatings. For the purposes of this
standard, the atmospheric area to be coated generally comprises of
that portion of the utility support structure above the transition
zone, which is that portion of the coating exposed up to 600 mm (24
in) above grade.
This standard is limited to the above-grade and atmospheric
portions of utility support structures. It does not address
below-grade coating repair within and below the transition zone.
This standard does not address foundations or guy anchoring
systems. This standard does not cover the coating of aluminum,
weathering steel, concrete, or any material other than steel.
Likewise, it does not cover the coating of nonsupport structures
such as fencing, buildings, transformers, or other miscellaneous
components within the transmission, distribution, and substation
systems. This standard does not cover new construction, transition
zone, below-grade, or water immersion. These areas of concern are
addressed specifically in other NACE/IEEE standards. This standard
does not address mechanical or structural damage, mechanical or
structural repairs, or structural integrity.
Purpose: This standard serves as a resource for
preparing specifications to achieve the successful coating of
utility structures.