Corrosion professionals in North America and Europe have experienced another year of continued growth in career opportunities and salary levels, according to the 2015 Corrosion Career Survey conducted by Materials Performance magazine.
An international oil and gas exploration and production company was looking to enhance oil recovery techniques in Oman. Internal coating of the pipelines provided corrosion protection, reduced friction, and improved flow efficiency when conveying corrosive water slurry, and offered adequate corrosion protection during subsequent transportation of recovered crude oil.
To successfully communicate the wide variety of corrosion-related issues affecting corrosion professionals today, MP is actively encouraging corrosion control professionals worldwide to submit technical articles to share their corrosion-related experiences with over 36,000 NACE International members around the globe.
On static structures, such as the steel legs of an offshore oil platform or the hull of an floating production, storage, and offloading (FPSO) vessel, the structural integrity of the welds need to be visually inspected and assessed. If the substrate is covered in biofouling that isn’t easily removed, a large amount of force is required to scrape it off, which may damage the underlying protective coating and leave the substrate vulnerable to corrosion.
Inorganic zinc (IOZ) coatings are used pervasively
in industry to provide reliable protection from
corrosion on a variety of substrates. Problems have
emerged with coatings applied over zinc primers,
however, such as delamination and blistering.
This article discusses proper curing methods for
IOZs to ensure dependable performance of the
entire coating system.
Many years ago, early in
my career, I was reminded
that it’s the
little things that make
a standard paint job a
good paint job. Coatings
are too often
thought of as something that must be
done, but it’s not necessary to spend
much time on surface preparation or application. After all, “paint is paint and
anybody can apply paint.”
Because of increasing costs, owners are demanding
longer coating service life. Ten to 15 years is no
longer satisfactory. Simply adding dry film thickness
will not work since many coatings crack at excessive
thicknesses. Recent coating technology advances
permit the use of solvent-free epoxy and
polyurethane systems having >15-year lives. Newer
combinations of epoxy and polysiloxane resins will
make a 25-year life achievable.
The prediction of coating life depends on many
factors, including the coating system used,
preparation and application methods, and the
severity of the environment. This article describes
the knowledge needed to estimate coating
life and the conditions that can compromise
coating systems.
A thorough pre-job meeting is an essential part of
any project. This article covers the requirements of a
pre-job meeting before starting a coating project. It
presents advice on who should attend, the roles of
the attendees, and references needed.
Re-engineering supply chains can reduce costs, cut
delivery times, provide a significant competitive
advantage, and enhance customer relationships.
Supply chain concepts can be applied to the
finishing phase (coating or plating) of production
to further cut costs and delivery times.
This article discusses the challenges involved with
coating contact, or “faying,” surfaces of steel
building components that are bolted together.
The use of certain zinc-rich primers is one successful
solution, provided the primers meet required
parameters for slip coefficient.
The heliport on a very large offshore structure
required complete coating removal and
replacement. The work could not be performed
during daylight hours because of a very busy and
crucial flight schedule, as well as safety concerns for
the workers from paint debris and metal loss. This
article describes the methods and materials used to
perform the work during nighttime hours. The
job was successfully completed in two weeks.
An excellent coating job can be ruined by
mechanical damage during shipping and
installation of the coated piece. Coating repairs can
be time-consuming, expensive, and may yield an
inferior coating job. This article provides
precautions to be taken to minimize coating
damage subsequent to initial coating.
Molybdenum-bearing stainless steels and nickel
alloys can experience catastrophic oxidation. This
occurs during oxidation of molybdenum-bearing
materials and is caused by the action of
molybdenum trioxide (MoO3) as an oxidation catalyst. This article explains the oxidation
phenomenon and suggests ways to prevent it.
This article describes the pipeline rehabilitation
program developed by the natural gas transmission
company in Colombia, South America. Part 1
presents the work accomplished to develop the
Effective Rehabilitation Plan (ERP). Part 2 discusses the ERP in detail, including results and accomplishments.