Stray Current and AC Interference Mitigation

This session can be purchased until March 15, 2021, and includes recordings of each presentation along with the recording of the question and answer session with the speakers.

NACE Member





Cal Chapman, P.E.

President & CEO, Chapman Engineering
Presentation: AC Interference Modeling and Mitigation

Mr. Chapman has practiced environmental engineering, corrosion engineering, project management and environmental sciences since 1981 in Texas and Alaska. He is a co-founder of Chapman Engineering, Inc. which began business in fall 1988 as a partnership and incorporated in 1989. Since co-founding the business, Mr. Chapman has obtained three U. S. patents in UST leak detection, created the proprietary and third-party-certified Fuel Finder™ UST leak detection method, and managed approximately 1,700 UST leak detection studies and accounts across Texas, Louisiana, New Mexico, and in other states. He has conducted and/or directed more than 450 Environmental Site Assessments (ESAs), including work under the U. S. EPA Petroleum Brownfields Grant program, Texas Voluntary Cleanup Program (VCP) and Innocent Owner/Operator Program (IOP), the Texas “Leaking Petroleum Storage Tank” (LPST) Program, Spill Response actions related to fuel tank roll-overs, and many Phase I and Phase II ESA’s related to property transactions. He has extensive experience dealing with contamination patterns involving petroleum hydrocarbons, chlorinated hydrocarbon solvents and “daughter products”, heavy metals, pesticides and herbicides, disinfection byproduct (DBP) compounds, and other environmental contaminants. His other professional work includes performing regulatory compliance audits and program reviews for various clients in the areas of Petroleum Storage Tank (PST), Public Water System (PWS), “Voluntary Environmental Audit,” air permitting, solid waste, storm-water planning, and other subject areas; designing public water systems in Texas, and conducted ground-water studies for residential development in the Texas Hill Country; and provided “conservation development” planning, water conservation and recycling plans, drought contingency plans, resource management and policy guidance, and other planning support to developers, larger engineering firms, property managers, and ground-water conservation districts;

Mike Ames

Vice President, Director of Technical Operations
Presentation: AC Interference Modeling and Mitigation

Mr. Ames has worked in pipeline operations, integrity management and corrosion control for 40 years, creating internal and external corrosion management programs for multiple operators over that time.  He served with Northern Natural Gas in the Liberal, Kansas area for more than 15 years, before joining a major Houston-based natural gas production, transmission and distribution company.  Mike has worked with the US Department of Transportation Pipeline and Hazardous Materials Safety Administration (PHMSA) and many state agencies in rulemaking, guidance document preparation, and regulatory audit protocols since the early 1990’s.  Work areas have included internal and external corrosion control of pipeline and compressor station facilities, transmission and gathering lines, smart pigging interpretation and recommendations, risk assessment program implementation and analysis.

Mr. Ames has been an active NACE member for over 30 years. He served in several offices of NACE's Gas Capitol Section from 1988-1992 and as the NACE Central Area Treasurer, Vice Chair, Chairman and Trustee from 2000-2006.  He has participated in numerous NACE technical committees for more than 25 years, mainly focusing on those committees promoting pipeline corrosion control.  Mr. Ames received the Eben Junkin Award from the Central Area in 1998, in recognition of his excellent work in promoting corrosion science.  He was then awarded the NACE 2014 Distinguished Service Award for his many-year efforts in promoting the organization and providing guidance to future NACE leaders.

Mr. Ames is a Cathodic Protection Specialist, Senior Corrosion Technologist, and is accredited by NACE International.  Programs Mike has mastered include Bass CPDM, FERA, PILARS, IAP, PHD, RSTRNG2, KAPA, CI Surveys, as well as spreadsheet generation for analysis of problems.  He has provided project coordination in field operations and ISAT task forces and he is also expert in AC-power-induced safety and corrosion issues on pipelines, and in design/installation of mitigation for those issues.  In addition, Mike holds credentials and significant experience in internal corrosion control, in-line inspection (or “smart pigging”), maintenance pigging, and integrity management.

Kevin Garrity

Executive Vice President, Mears Group, Inc.
Presentation: The Use of Algorithms to Prioritize AC Risk on Pipeline Assets

Kevin has over forty years of experience in corrosion engineering and the application of cathodic protection (CP) to buried pipelines, tanks, concrete structures and marine structures. He has investigated many pipeline related failures in the US, Canada, Australia, and Argentina and given forensic testimony in US Federal, State and Circuit courts as well as before PHMSA.  He has managed programs in all aspects of Pipeline Integrity.  Kevin also has extensive experience in evaluating and mitigating stray current effects from DC sources and Electromagnetic Interference from AC Sources.

He has been an active member of NACE International for 35 years and has served as the chair of many NACE technical committees. He served as President of NACE International 2013-2014 and currently serves as President of the NACE Institute, the world wide certification body for over 50,000 members.

He received the NACE Distinguished Service Award in 2010 and was named a NACE Fellow in 2015.

Philip J. Eggen, P.E.

Senior Business Development Leader, Dairyland Electrical Industries
Presentation: DC Decoupling – Equipment and Methodology for Decoupling CP from Grounding on Pipelines and at Stations

Phil has over 20 years of pipeline engineering experience, with the last 15 in integrity management and corrosion engineering.  His experience was initiated at Nicor Gas as a Corrosion Manager for over 24,000 miles of steel pipe and extended to EN Engineering where he managed the Corrosion Engineering Team for 6 years.  Phil is now at Dairyland Electrical Industries where he is helping customers solve AC mitigation and station decoupling issues.

Phil has been active in NACE for over 10 years through the local section and through the NACE National Meetings.  He has also served on the American Gas Association (AGA) corrosion committee.  Phil is a registered Professional Engineer in Illinois and holds a NACE CP2-Cathodic Protection Technician certificate.

Brent Phelps, PE

Manager, Energy and Corrosion, RK&K
Presentation: Stray Current – AC Interference and Mitigation

Mr. Phelps has 45 years of experience in pipeline operations, corrosion control, engineering, design, and integrity management in the energy and utilities industries. His experience includes project and field supervision for natural gas transmission pipelines, gas gathering, gas distribution and liquid pipelines, gas processing and petroleum production facilities. Mr. Phelps is a Professional Engineer, a NACE certified Corrosion Specialist and Cathodic Protection Specialist and an approved NACE Instructor. He has significant experience and training in cathodic protection and corrosion control of pipeline facilities, integrity management and internal corrosion. His primary areas of expertise include performing operations evaluations; internal and external corrosion evaluations and assessments; AC corrosion and mitigation, engineering feasibility studies; and recommendations and design of corrosion control measures.

Andreas Junker Olesen, Ph.D.

Senior Corrosion Specialist, MetriCorr
Presentation: AC Corrosion Mitigation

Dr. Junker Olesen has made a Ph.D. on the topic of "AC Corrosion of Cathodically Protected Pipelines" and he understands the topic like few others. He has published several peer-reviewed papers about AC corrosion and has presented numerous conference papers at international conferences, amongst others NACE CORROSION CONFERENCE. Andreas has been employed with MetriCorr since 2014 where he has gained extensive experience in the use of ER probes for analysis of corrosion and cathodic protection operation on both on- and off-shore installations, and is engaged in consultancy on CP operation under AC interference.He is and active member of NACE and participates in standardization committee work related to AC corrosion. He holds a NACE CP 1 certificate.