Safety, function, and service life should be a part of every project. To address these parameters, consideration must be given to design, choice of materials, construction methods, active and passive surface protection, and other parameters.
Several myths concerning the cause of reinforced concrete deterioration prevailed in the mid-20th century, but steel corrosion is by far the biggest durability issue for reinforced concrete structures.
Giving special attention to surface preparation and eliminating surface contaminants prior to coating can essentially eliminate premature coating failure.
The most damaging form of corrosion is localized corrosion, which can be prevented and controlled by using corrosion inhibitors, cathodic protection, and protective coatings.
Corrosion poses a threat to all infrastructure, and the economic impact of corrosion represents an annual cost of billions of dollars. There are many advantages of planning for corrosion control and mitigation. It is important that owners and operators of high-value assets understand the cost implications of the effects of corrosion.
The Canadian Standards Association developed CSA Z245.30-141 for external field-applied coatings on steel pipelines. It defines requirements for the qualification, application, inspection, and testing of external oil and gas pipeline coatings applied in the field or shop.
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.