|
Defect Assessment
in Pipelines
| February 7, 2005 |
|
| 7:30am |
Registration & coffee |
8:00am-5:00pm |
Course |
| February 8, 2005 |
|
8:00am-5:00pm |
Course |
Organized in association with Penspen Integrity
"Through this required program...an
operator must evaluate all defects and...
develop a schedule that prioritizes the defects for evaluation and repair."
—from the Final DOT Rule: Pipeline Integrity Management in High Consequence
Areas
Many transmission pipelines are now over
20 years old. This is "middle aged" in pipeline
terms, and even the best designed and maintained pipeline
will become defective as it progresses through its design
life. Therefore, operators need to be aware of the effect
these defects will have on their pipeline, and — more
importantly — be able to assess their significance
in terms of the continuing integrity of the pipeline. The
increasing use of high-technology maintenance (for example,
intelligent pigs) is helping pipeline owners to assess
the condition of their lines, and if these modern maintenance
methods are combined with modern defect-assessment methods,
they can provide a very powerful, and cost-effective, tool.
This course will present the latest defect-assessment methods
to pipeline engineers and managers. These methods will
range from simple, quick, assessment methods, to the more-detailed —fitness
for purpose— analysis. The course is highly interactive
and takes the form of lectures, workshops, and case studies.
The course will cover methods available
to assess the significance of defects detected in onshore
and offshore pipelines. It will introduce simple analytical
methods used to assess internal and external corrosion,
dents and gouges, cracks (e.g. SCC), weld defects, and
fatigue. The course is unique as it is a holistic
approach to defect assessment, and it ensures the student
appreciates all aspects of the subject, including repair
and risk management.
Who
Should Attend
Pipeline engineers, designers and service
professionals who are involved with the maintenance,
inspection, and repair of pipelines.
Course
Notes
All delegates will receive a detailed set of lecture
notes totaling more than 1100 pages, providing an invaluable
reference document.
Continuing
Education Units
Upon completion of the course, participants
will be eligible to receive 1.2 Continuing Education
Units (CEUs).
Lecturers
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Professor Phil Hopkins has more than 24 years’ experience in pipeline and marine engineering, and is Technical Director with Penspen Integrity. He has worked with most of the major oil and gas companies and pipeline companies around the world providing consultancy on management, business, design, maintenance, inspection, risk analysis and safety, and failure investigations. Phil has served on many professional committees, including the British Standards Institution, European Pipeline Research Group, American Gas Association’s Pipeline Research Committee, ASME Pipeline Systems Executive Committee, and the DNV Pipeline Committee. He has extensive experience in both lecturing and training, and regularly presents on many aspects of pipeline engineering, training engineers all over the world.
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Andrew Cosham has more than 10 years’ experience in pipeline engineering, specializing in fracture mechanics and pipeline defect assessment. Andrew is currently a Consultant with Penspen Integrity.
Course
Program
Introduction
to Basic Pipeline Engineering Principles
-
Basic pipeline design principles
-
-
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Basic pipeline operating and maintenance
parameters
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Maintenance and inspection methods
Introduction
to Pipeline Defects - Why Pipelines Fail
-
-
-
What causes pipelines to fail?
-
-
History of pipeline defect assessment
Introduction
to Fracture Mechanics (handouts and notes only, no
lecture)
-
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Brittle & ductile fracture
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Understanding Fatigue (handouts and notes only, no lecture)
Fundamental
Pipeline Defect Failure Relationships
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Why pipeline defects fail
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Fundamental failure relationships
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Explanation of key parameters
How to Assess
Corrosion Defects
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Introduction to basic theory
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Background, strengths and weaknesses
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Methods to assess corrosion
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ASME B31.G and RSTRENG methods
-
-
-
Universal curves for assessing corrosion
defects.
Workshop: Corrosion Assessment
using Fitness for Purpose
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Introduction to basic theory
-
-
Additional problems and concerns with
gouges
-
Introduction to basic theory
-
-
Methods to assess dents containing
gouges
-
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Problems with fatigue loadings
-
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The problems with cracks in pipelines
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Stress corrosion cracking (low and
high pH)
How to Assess
Weld Defects
-
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Assessing defects in pipeline girth
welds
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Assessing non planar defects in welds
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The EPRG girth weld defect guidelines
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Fatigue design of girth welds
Setting Intelligent Pig
Inspection Levels
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Pigs - where they came from and what
they can do.
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Basic theory
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Magnetic, ultrasonic pigs - their accuracy
and limitations.
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What pigs can detect
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What operators want to detect
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Setting intelligent pig inspection levels
Workshop: Setting Intelligent
Pig Inspection Levels
Fracture Propagation
and Arrest (handouts and notes only, no lecture)
Pipeline Repair
and Rehabilitation
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Repair and rehabilitation strategy
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Response to discovering defects
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What are the cost implications?
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Types of repair and rehabilitation methods
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Grinding
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Weld deposition
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Shells (including epoxy-filled)
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Composite wraps
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Cut outs
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Mechanical clamps/connectors
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Time to repair
Risk and Integrity
Management and Analysis
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What is risk and risk analysis?
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Risk management around the world
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Risk management in the USA
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Risk management methods - API 1160 and
ASME B31.8
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Baseline and direct assessment - discussion
item
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Integrity Management Programs
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Prioritisation schemes
Workshop: Setting Priorities
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