Pigging & In-line Inspection

December 5-6, 2011


Course schedule
December 5-6 8am-5pm

The use of in-line tools for inspection and cleaning is accepted as essential for the safe and profitable operation of all pipelines. Now, Regulations require internal inspections using geometry pigs for detecting changes in circumference and MFL or ultrasonic pigs for determining wall anomalies, or wall loss due to corrosion in onshore pipelines in the US. Offshore, pipeline operators wage a constant battle for flow assurance against paraffin, hydrate, and asphaltene formation in deepwater lines, and pigging technology combined with chemical treatment is their primary weapon. The course content will be fully illustrated, with actual pigs and models being used to aid understanding and help overcome any language difficulties.

Course Objectives

This course is designed to provide a comprehensive introduction to all aspects of utility and in-line inspection pigging. Led by four of the most experienced, independent experts in this field today, the course will be conducted as a workshop, and attendees will be actively encouraged to participate.

Course Notes

Included with the course fee is a detailed set of lecture notes and the reference handbook Pipeline Pigging & Integrity Technology, 3rd Edition, by J.N.H. Tiratsoo (600pp hardcover - a $125 value) providing invaluable reference documents after the course.


Who should attend

The course is especially designed for

  • project managers,
  • engineers,
  • maintenance and technical personnel responsible for pipeline integrity assurance, flow assurance, corrosion control, and safety.

Continuing Education Units

Upon completion of the course, participants will be eligible to receive 1.2 Continuing Education Units (CEUs).


Dr. Tom Bubenik is a Senior Principal Engineer at DNV GL, responsible for technically advising sections and personnel in the Pipeline Services Department. He joined DNV GL in January of 2004 to manage and grow the Pipeline Integrity Section. Here, he was responsible for development, management, and implementation of projects related to all aspects of pipeline integrity management, including but not limited to in-line inspection, stress corrosion cracking management, seam weld integrity, mechanical damage, etc. He is an internationally recognized subject matter expert in technologies related to in-line inspection and the effects of defects on pipeline integrity.

Brett Wakeham is a Project Engineer in at TransCanada Pipelines. He is currently involved with the project management and execution for inline inspections and pipeline cleaning projects throughout Canada. Prior to this role, Brett also worked on TransCanada's Canadian Corrosion Program which included pipeline risk assessment and corrosion growth modeling.

George Williamson, is currently Segment Engineering Technical Authority – Inspection, for the Upstream Global Projects group within BP. He has more than 25 years of Operations, Maintenance and Integrity Management experience. He is a registered professional engineer, NACE certified corrosion and a cathodic protection specialist. He has managed compliance and integrity programs for production facilities, gathering systems, liquid and gas transmission pipelines.

Course Outline

Day 1

Pigging for Operation and Maintenance

  • Pigging during construction
  • Pigging during operation
  • Utility Pigs
  • Cleaning pigs
  • Sealing pigs
  • Gauging pigs
  • Dual diameter pigs
  • Magnetic cleaning pigs
  • Designing a Pipeline for Pigging
  • Pig traps and pigging stations
  • Location and tracking devices
In-line Inspection (ILI) Tools - Theory, Performance, and Detection Limits
  • Metal loss In-line Inspection
  • Other In-Line Inspection Tools
  • Crack detection pigs
  • Mapping
  • Geometry and bend-detection pigs
  • Wax deposition measurement
  • Spanning pigs
  • Semi-intelligent pigs

Day 2

Designing and Implementing an In-line Inspection (ILI) Program

  • Selecting an ILI Tool
  • Specific Design Considerations for Running ILI Tools
  • Launch and Receive trap design
  • Bends, tees, and valves
  • Issuing an Inquiry
  • Schedule requirements
Preparation for ILI
  • Controlling Operational Parameters During the Inspection Run
  • Strategy for Contract Development and Negotiations
  • Developing a good specification
  • Contingency Planning for a Stuck Pig
  • Offshore risers
  • Onshore flowlines, gathering system main sections or laterals
Post In-line Inspection Issues

Quality Assurance Check of the Data
Development of Protocols for Response
Prioritization of the Dig Plan
  • US regulatory requirements
  • Criteria for corrosion-caused metal loss
  • Criteria for dents
Validation of Results:
  • Planning and preparation for field NDE
  • Comparison between ILI, field NDE and actual:
    • Corrosion
    • Dents - effects of re-rounding
  • Establish level of confidence
Fitness for Purpose: Assessment
  • Assessment of defects
  • Establish long-term integrity management program
  • Incorporation of results in risk programs
  • Potential Repair Consideration

Organized by:

Clarion Technical Conferences

Tiratsoo Technical

Supported by: PIPE Pipelines International The Journal of Pipeline Engineering