TPT January 2008

100 / 140

Coating, Jacketing & Galvanizing Technology
January 2008 98 ›
Cladding carbon and low alloy steels with
a corrosion resistant alloy has been a
proven cost saving technology in the oil
and gas industry for some years. With the
increasing cost of nickel and other metals,
this technique is expected to remain an
economical and technical alternative to
solid alloys.
Cladding critical components requires
special skills that are also an important
part of the protection process. Arc
Energy Resources, UK, has substantial
experience in this area serving the oil
and gas industry. Three recent projects
have reinforced the company’s position
as one of the UK’s foremost weld overlay
cladding specialists.
Following previous contracts to coat pig
launcher vessels for a major Middle East
project, global pipeline pigging provider
Pipeline Engineering (PE) again turned
to Arc Energy Resources to meet the
exacting specification for corrosion
resistant coatings for the wetted surfaces
of a pig receiver vessel.
The 20" x 24" class 900 scraper receiver,
which is designed to receive conventional
and intelligent pipeline pigging tools, is
destined for the Vasai East Development
Project located approximately 80km west-
north-west of Mumbai, off India’s west
coast.
It is manufactured in high strength carbon
steel using S460 rolls and welded plate.
Because the hydrocarbon gas is classified
as a sour service that is particularly
corrosive and could cause cracking and
other problems in carbon steel components,
the specification required all internal wetted
surfaces, flange faces and a quick-closure
door to be clad with a 3mm coating of
Inconel 625 to increase life expectancy.
Arc Energy, which has recently opened a
fabrication facility specifically to provide
a complete supply service for weld
overlay clad vessels, was able to offer to
manufacture and overlay the pig receiver.
This enabled the welding functions to
be carried out at one location, saving
time and freeing up capacity at Pipeline
Engineering’s own site.
Pipeline projects benefit from arc
energy weld overlay cladding
fi Overlaying four 36" carbon steel elbows with
stainless steel for Shell’s Stanlow Refinery
› Corrosion-proof cladding of an 8.65m-long, 16"
diameter superduplex riser