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Managing Pipeline Corrosion
Pipeline corrosion is the deterioration
of metal resulting from a reaction with the internal or
external environment of the pipe, which changes the iron
contained in pipe to rust. External corrosion occurs from
the natural chemical interaction between the exterior of the
pipeline and the soil, air, or water surrounding it.
Internal corrosion results from a chemical attack on the
interior of the pipe from naturally-occurring foreign
materials in the oil being transported.
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In the Field
Valves focus of 2006 Pipeline Maintenance
Shutdown
Work crews spent many weeks preparing for the maintenance and
repair project. Over 100 TAPS employees were involved in
replacing CV109. At the same time, additional crew completed
other
maintenance projects along the pipeline, including the
installation of a check valve at Pump Station 10.
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President's Message
Kevin Hostler, President and CEO
Alyeska responds to Prudhoe Bay Shutdown
When BP announced its decision to shutdown the Prudhoe Bay oil
field because of corrosion found in the transit lines on the
North Slope, Alyeska immediately began working to assess the
impact to pipeline operations.
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Face to Face
Janna Miller
Integrity Management Engineering Supervisor
Driven. Disciplined. Determined. Meet Janna Miller, triathlon
animal and Integrity Management Engineering supervisor for
Alyeska. A lifelong Alaskan and UAA graduate, she has been
with Alyeska for 17 years, after starting as a contractor in
1989.
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Pipeline 101
Pigging the Trans Alaska Pipeline System
A pig is a mechanical
device that is pushed through the pipeline by the oil to
perform various operations on the pipeline without stopping
the flow of oil. This process is referred to as “pigging”.
Alyeska runs two basic types or classes of pigs: cleaning
and instrumented or “smart”. These devices help Alyeska
clean and inspect the pipeline to prevent and detect
problems.
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