Chemical Engineering May 2021 - 42
FIGURE 4. Cleaning is an important step in protecting valves against corrosion
Cortec Case History 668
of the product is often not required.
It is observed that when valves
are only treated with " contact " corrosion
inhibitors, the intricate and
complex geometry inside them is at
greater risk for corrosion. In addition
to hydrotesting with a VCI additive
for up to two years of protection,
experts may suggest fogging a waterborne
VCI inside the valves and
coating the stems and flanges with
an unobtrusive water-based coating
rust preventative that may not need
to be cleaned off. After this, valve
flange guards
can be added
and the entire
valve wrapped
in VCI film [1].
The same basic
protective components
can be
adopted in almost
any phase
of production,
storage and
shipment, depending
on the specific user needs
or preferences.
n
Edited by Mary Page Bailey
References
1. Holden, J., Personal Interview. January 16, 2017.
2. Cortec Case History 605, Long-Term Valve Preservation, August
2018.
3. Cortec Case History 526, Valve Bonnet Spares Preservation,
January 2017.
4. Cortec Case History 554, Alaskan Oil & Gas Facility Preservation,
November 2017.
5. Cortec Case History 668, Cleaning and Protection of Critical
Equipment Before Storage, June 2020.
Editor's Note: All photos were
originally contributed to Cortec by
distributor PT. Pentra Unggul Sejati.
Cortec has permission to use
them here.
Authors
Ana Juraga (Email: ana.juraga@
ecocortec.hr) has been a content
writer at Cortec Corp. for 10 years.
Besides dealing with media relations,
she collaborates with Cortec's
engineers and chemists in
creating informative technical
content. She is passionate about
educating the engineering community
about green corrosion-inhibiting
technologies and advancements in this field.
Julie Holmquist (Email: jholmquist@
cortecvci.com) has been a content
writer at Cortec Corp. for more
than five years. She specializes in
writing about corrosion-inhibiting
technology for concrete, electronics,
manufacturing, oil and gas,
and many other industries. Her
articles have been published in
dozens of industry magazines.
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Chemical Engineering May 2021
Table of Contents for the Digital Edition of Chemical Engineering May 2021
Contents
Chemical Engineering May 2021 - Cover1
Chemical Engineering May 2021 - Cover2
Chemical Engineering May 2021 - Contents
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Chemical Engineering May 2021 - Cover3
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