2 Fundamentals of Corrosion
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Transcript of 2 Fundamentals of Corrosion
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7/30/2019 2 Fundamentals of Corrosion
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Robert Gordon University and Owen S. Jenkins Ltd. 2011
Wells ModuleWells ModuleENM201ENM201
2. Fundamentals of Corrosion2. Fundamentals of Corrosion
Prepared by Owen Jenkins,M.A., C.Eng., C.Mar.Eng., F.E.I., M.I.Mar.EST., N.A.C.E., S.P.E.
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Robert Gordon University and Owen S. Jenkins Ltd. 2011
Lecture Topic
We shall be looking at why
corrosion matters
Its impact on the businesseconomics, health, safety and theenvironment
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Robert Gordon University
Robert Gordon University and Owen S. Jenkins Ltd. 2011
Corrosion Definition
Corrosion The destruction or
deterioration of a material becauseof reaction with its environment
Most familiar as rusting andoxidation of metals
Also can include rotting of wood,breakdown of polymers and otherdeterioration processes
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Robert Gordon University Robert Gordon University and Owen S. Jenkins Ltd. 2011
Cost of Corrosion
Fontana* cites a figures of $70 billion for theUnited States in 1975, from a study performedby the National Bureau of Standards andBattelle Memorial Institute.
An updated study was conducted in 1998 andshows a figure of $276 billion, or 3.1% of GDP.NACE CC Study
However you view it, the cost is huge.
* Corrosion Engineering 3rd. Edition, by Mars G. Fontana.
McGraw Hill Book Company, 1987. ISBN 0-07-100360-6.
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http://../Wells%20ENM201/Materials%20and%20Corrosion%20OJ/NACE%20cost_corrosion.ppthttp://../Wells%20ENM201/Materials%20and%20Corrosion%20OJ/NACE%20cost_corrosion.ppt -
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Robert Gordon University Robert Gordon University and Owen S. Jenkins Ltd. 2011
HSE 1
There are also major costs in terms of
Health, Safety and Environmental issues. Example
BP's pipeline failure at Prudhoe Bay,Alaska, in 2006 which resulted in theleakage of more than 200,000 gallons ofoil.
The pipeline suffered extensive corrosiondue to lack of maintenance over severalyears.
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Robert Gordon University Robert Gordon University and Owen S. Jenkins Ltd. 2011
HSE 2
U.S. Chemical Safety Board (CSB) Chairman CarolynW. Merritt Senate :
"Virtually all of the seven root causes identified for thePrudhoe Bay incidents have strong echoes in TexasCity."
These included, she said, the
significant role of budget and production pressuresin driving BP's decision-making - and ultimately
harming safety. Conclusion cutting corners and maintenance is
not only dangerous to life and the environment, it isbad business.
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Robert Gordon University Robert Gordon University and Owen S. Jenkins Ltd. 2011
Pipeline Failure at Prudhoe Bay
BP's pipeline failureat Prudhoe Bay,
Alaska, in 2006 whichresulted in theleakage of more than200,000 gallons of
oil.
The pipeline sufferedextensive corrosion
due to lack ofmaintenance overseveral years. Seeright. Photo courtesy of AP PHOTO/Rick Bowmer
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Robert Gordon University Robert Gordon University and Owen S. Jenkins Ltd. 2011 8
Wear andWear and
Corrosion inCorrosion in
44" Tubing:" Tubing:
Corrosion andCorrosion and
WirelineWirelineDamageDamage
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Robert Gordon University Robert Gordon University and Owen S. Jenkins Ltd. 2011
Tackling the Problem: 1
Understanding what corrosion is
Mechanisms causing corrosion
Adjusting the variables Materials
Operating conditions
Environment internally and externally
Interface conditions
Striking the right balance COMPROMISE ISINEVITABLE
Prevention/mitigation/allowances
All materials corrode under some conditions
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Robert Gordon University Robert Gordon University and Owen S. Jenkins Ltd. 2011
Tackling the Problem: 2
Essentials Thorough, planned inspection and
maintenance
Honest and open reporting
Making sure the little guys voice is heard
Education of staff at all levels from seniormanagement down to the cleaners They may be the people who notice that
something has corroded through first, as theyare always cleaning up the mess!
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Robert Gordon University Robert Gordon University and Owen S. Jenkins Ltd. 2011
Wells Module ENM201
2. Fundamentals of Corrosion2. Fundamentals of Corrosion
Prepared by
OWEN S. JENKINS LTD.4, Charlton Avenue, Aboyne, Aberdeenshire, AB34 5GL, United
Kingdom.Tel. +44 (0)13398 87779. Mobile phone: +44 (0)7803 296779.
Email:
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[email protected]: www.osjl.co.uk
mailto:[email protected]://www.osjl.co.uk/http://www.osjl.co.uk/mailto:[email protected]