Engineering Assessment of Onshore Pipeline Gathering Systems
Led by Bryan Melan
September 12-13, 2018: Houston


Day 1
  7:30am Registration & coffee
  8:00am-5:00pm Course
Day 2
  8:00am-5:00pm Course

The aim of this course is to help engineers understand the most important considerations in developing a plan for managing onshore gathering system integrity.  The intent is to provide a thorough background of systems and processes in order to develop customized Mechanical Integrity Management plans and strategies. Accordingly, the course will focus on these primary areas:

  • Types of gathering systems
  • Integrity threats affecting gathering systems and flowlines
  • Gathering system construction materials and practices
  • Risk assessment
  • Risk management
  • Codes and regulations
  • Pipe inspection and assessment
  • Anomalies, imperfections, and defects
  • Assessing anomalies
  • Pipe repairs
  • Forward planning


Participants will receive a full set of course slides and notes in paper and electronic form, in color throughout.

Continuing Education Units

Upon completion of the course, participants will be eligible to receive 1.4 CEUs.

Who Should Attend

Project managers, pipeline engineers and maintenance personnel who are involved or responsible for the maintenance, inspection, assessment and repair of pipeline systems.


Bryan Melan, PE has over 41 years of experience in mechanical and structural engineering and project management in the upstream and midstream oil & gas industries, including 28 years specializing in pipeline integrity management and engineering. He was formerly with Amoco Production and Sun Pipe Line Company, and retired from Marathon Oil in 2015, where he was most recently Pipeline Integrity Subject Matter Expert for Marathon’s worldwide assets. Bryan is currently owner and principal engineer at Tide Water Integrity Services LLC, an engineering consultancy providing advice and expertise on pipeline and fixed equipment structural integrity engineering: risk assessment, inspection, data integration, data validation, asset fitness-for-service, repairs, and design life-extension analyses for pipelines, process piping, pressure vessels, and tanks.  He has also been engaged to provide expert witness services in new pipeline construction routing and patent infringement litigation.


The objective of this course is to understand important considerations in developing plans for Managing Onshore Gathering System safety and integrity.  The intent is to provide a background of systems and processes to develop U.S. regulatory-compliant Mechanical Integrity Management plans and strategies.  Many of these individual topics are covered in greater detail in other course offerings.

Introduction – Why are Onshore Gathering Systems Critically Important Today?

Types of Gathering System Configurations

  • Well Pad & Central Battery Systems
  • Gathering, Flowlines & Ancillary systems

Integrity Threats Affecting Gathering Systems and Flowlines

  • External Corrosion
  • Internal Corrosion
  • Flow Restrictions
  • Spans and Washouts
  • Natural Disasters
  • Third Party Damage
  • Construction Defects
  • AC and DC Interference
  • The Persistent Enemy

Gathering System Construction Materials and Practices

  • Steel Pipe Manufacture
  • Plastic Pipe
  • Composite Materials
  • External coatings
  • Internal coating and cladding
  • Sour Service standards
  • Construction planning for integrity management and assessment

Risk Assessment (Managing Consequences and Probabilities)

  • Liquid Spill Modeling
  • Gas Potential Impact Radius (PIR)
  • Quantitative Risk Assessment
  • Relative Risk Assessment and Prioritization

Risk Management (Managing Operations to reduce overall risk)

  • Hydraulic Models
  • Internal Leak Detection Systems (CPM)
  • External Leak Detection Systems
  • Flow Assurance
  • Product Quality & Preventive and Mitigative Measures Monitoring

Codes and Regulations Applicable to Gathering Systems

  • API RP 80
  • State Codes
  • PIPES Acts
  •  “MegaRules” Update

Pipe Inspection

  • Direct Assessment
    • External
    • Internal
  • In Line Inspection
  •  “Unpiggable” Technologies

Anomalies, Imperfections, and Defects

  • Time Dependent Anomalies
    • Metal Loss
    • Cracking
  • Time Independent and Stable Anomalies
  • Selecting Anomalies for Investigation and Validation
  • Codes Incorporated by PHMSA

Assessing Anomalies

  • Manual Measurement
  • Non-Manual Methods
  • Assessment Codes, Fitness-for-Purpose Determination
    • ASME
    • DNV
  • POF specification

Pipe Repairs

  • Sleeving
  • Composite Repairs
  • Other Repairs Allowed by Code – Recommended and Not Recommended
  • Temporary vs. Permanent Repairs
  • PDAM and the PRCI Pipe Repair Manual

Forward Planning

  • Data Exploitation and Probability of Exceedance – An Example
  • Reinspection Interval Determination
  • Pipeline Design Life Extension
  • Creating Strategies and Tactics

 Organized by:

Clarion Technical Conferences     Tiratsoo Technical

Supported by:

Pipelines International    Journal of Pipeline Engineering