Aegion’s Corrosion Protection inspection group consists
of NACE and SSPC trained coatings inspectors who will go
just about anywhere to inspect a coating application project.
One of our more interesting assignments was a recent
overcoat painting project atop antenna towers.
The towers are approximately 1,000 feet tall and have been
in place for decades. Because there is no miracle paint
product that will last forever, maintenance painting is
necessary to protect the integrity of the structures
from corrosion. The structures are located in a marine
atmosphere in close proximity to the Atlantic Ocean and
require chloride contamination testing and remediation.
The color scheme for these antennas is set by FAA guidelines
due to their height. White and orange are alternated every
100 feet, adding a level of complexity to the project.
The general scope of work began with pressure washing
the entire structure to remove any dirt, dust, chalk residue
or loose paint from the old existing coating. Power tool
cleaning and feathering off of all chipped areas was required
in areas where old paint was removed. Two coats of primer
were then applied to those areas prior to application of the
appropriate colored topcoat.
Accessing all points on these towers required personnel to take
a specialty tower climbing safety class. Additionally, specific
safety harnesses and other related equipment were required.
In line with Aegion’s value, ZERO INCIDENTS ARE POSSIBLE,
safety on this project was paramount and the necessary safety
equipment was provided.
The work, which began at the top of the structures and moved
downward, was inspected at each step of the process. This
required many trips up and down the towers. A winch system
was required to bring personnel, equipment and coatings
products up the exterior of the towers. This winch system
delivered a basket with materials and personnel to permanent
platforms at various levels of the structures. The platforms
were helpful, but the limited number required extensive
climbing between them to get close enough to inspect all areas
being prepared and coated.
Throughout the project, daily inspection reports documenting
every aspect of the work along with photos to show compliance
with project specifications were generated. These reports were
provided to the owner along with all other documents generated
during the process throughout the duration of the project.