Corrosion Prevention and Management of Welds Virtual Conference

July 28, 2021

Virtual Mini Conference


AWS Contact
Alina Blanco


Corrosion remains a significant challenge across the metals welding, fabrication, and operations industry. And to learn actionable preventative measures that have minimized risk, a thorough understanding of how different materials are susceptible to corrosion during and after fabrication is necessary.

Join us for the Corrosion Prevention and Management of Welds Virtual Conference. During this one-day mini-conference, the speakers will share their case studies on how their problem-solving led to preventative measures. Topics will also include building on in-service case studies, a discussion of welding construction and project planning to minimize these risks, and more. Register to attend today and earn PDHs upon completion.


organizing committee

Krista Heidersbach
Krista Heidersbach

Conference Chair

Phillips 66

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Sr. Engineer, Corrosion

Since completing her PhD at The Pennsylvania State University, Krista has worked in the chemical, refinery, and upstream sectors before moving to pipelines. Her technical interests have been geared towards upstream multiphase flow lines where she developed knowledge of “Top of the Line corrosion” in gas pipelines and preventing corrosion during hydrotesting and/or long term wet storage. The former has given her significant knowledge of corrosion modeling for CO2 / H2S systems and chemical treatment / corrosion inhibition. The latter has given her significant experience with Microbiologically Influenced Corrosion (MIC), diagnosing, monitoring and treating.

Working in the midstream sector as an internal corrosion SME, she is also broadening her knowledge of external corrosion control.
Krista was named a NACE / AMPP Fellow in 2021 and is a licensed PE in metallurgy in the State of Texas.

Sudhakar Mahajanam
Sudhakar Mahajanam

Conference Co-Chair

Stress Engineering Services, Inc.

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Stress Engineering Services, Inc.Associate II, Materials Practice

Sudhakar Mahajanam is currently an Associate II in the Materials Group at Stress Engineering Services, Inc. Houston TX. In this role, he provides guidance and solutions to projects involving mechanical integrity, metallurgy and corrosion. He has 27 years experience in the field of metallurgy and corrosion, with 14 years in oil and gas. Sudhakar is a licensed professional engineer in the state of Texas. He holds certifications in API 571 and API 580. He has a Bachelor’s degree in metallurgical engineering from Indian Institute of Technology Roorkee; MS and PhD degrees in materials science and engineering from The Ohio State University; and an MBA from University of Texas at Austin. Sudhakar has published more than 40 papers, and is technical editor for several peer-reviewed journals.




Gerald K. Brown
Gerald K. Brown (Jerry)


Brown Corrosion Services, Inc.

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Brown Corrosion Services, Inc.

Jerry majored in Mechanical Engineering at UCLA in California and is a Registered Professional Engineer in California. He is a member of SPE, ASTM, PPSA and NACE and has held many positions in NACE including being on the Board of Directors. Jerry has over 35 years experience in corrosion and erosion. He has lived and traveled in many countries working across several industries but always involved with metal loss and corrosion control. He has given over 50 papers on corrosion and erosion as well as conducted several training seminars. Jerry Brown is the President of Brown Corrosion Services, Inc. Brown Corrosion Services was started 36 years ago and is located in Houston offering consulting and services for internal & external corrosion/erosion, CP, and expert witness services.

Richard Campbell
Richard D. Campbell

Bechtel Fellow & Welding Technical Specialist


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BechtelRichard Campbell is a Bechtel Fellow with Bechtel Corporation’s Construction Welding and NDE group. He is an AWS SCWI, a CWB Level 2 Welding Inspector, and an ASNT NDT Level III Visual Testing Inspector. With a BS degree in Welding Engineering from LeTourneau University and a PhD in Materials Engineering from RPI, he has worked for more than 40 years in the welding industry, including construction, structures, pressure vessels, piping systems, and government projects. For 9 years he was chair of the AWS D1K Subcommittee on Stainless Steel Welding, responsible for publication of the AWS D1.6:2017 Structural Welding Code – Stainless Steel. He is also a member of the AWS D1 Committee on Structural Welding, the D1H Subcommittee on Sheet Steel, the AWS A2 Committee on Definitions and Symbols, and the AWS A2C Subcommittee on Symbols. Rich is vice chair of the ASME B31.3 Process Piping Code section committee, and member of numerous other ASME and AWS codes and standards committees, including Section IX’s subgroup on Qualification.

He has taught AWS CWI classes for over 25 years and has presented several seminars on welding codes, stainless steel welding, and welding symbols for AWS. Dr. Campbell is author of over 30 technical articles on welding or metallurgy. As an expert in stainless steel welding, he authored AWS’s The Professional’s Advisor on Welding of Stainless Steels, has penned several Just the Facts articles and a series of articles on welding symbols in the quarterly AWS publication Inspection Trends.

Joshua Jackson
Joshua E. Jackson, PhD

CEO & Senior Metallurgist

US Corrosion Services

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US Corrosion Services

Dr. Joshua Jackson is a serial entrepreneur who is the CEO of US Corrosion Services LLC and Metallum Technologies. He is a professional engineer in the State of Texas who specializes in corrosion analysis and prevention. He holds BS degrees in math and physics from MIT, and MS and PhD degrees from the Colorado School of Mines in Metallurgical Engineering. As a metallurgical engineer, he works on all sides of welding from procedure development to failure analysis.

Jared Hebert
Jared Hebert

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Upon completion of his Bachelor’s degree in chemical engineering from the University of Louisiana-Lafayette, Jared’s primary work focused on mitigating internal corrosion of wet gas gathering pipeline systems. His work regarding the successful mitigation of microbiologically influenced corrosion (MIC) of one of the largest gathering systems in the Barnett Shale became the topic of his Master’s dissertation, which he presented to the University of Manchester for graduation in corrosion control engineering in 2015. His work offshore in the Gulf of Mexico provided him exposure to various integrity-related opportunities ranging from NDT inspections to deepwater chemical delivery and materials selection. It was in the Gulf of Mexico where he became familiar with flow-induced preferential weld corrosion of process piping in the presence of CO2 and acetic acid.





11:00 am – 5:00 pm (EDT)

11:00am – 11:05am
Welcome & Introductions
Krista L. Heidersbach
Sr. Engineer, Corrosion, Asset Integrity, Phillips 66


11:05pm – 11:50pm
Preferential Weld Corrosion in Carbon Steel Pipelines
Sudhakar Mahajanam, PhD, PE
Associate II, Materials Practice, Stress Engineering Services, Inc.

Presentation Overview

Preferential weld corrosion (PWC) or selective weld attack has been recognized as a problem for the oil and gas industry since the late 1950s. Over the decades, several mitigation guidelines have been developed – such as tailoring the weld chemistry and microstructure, controlling the process environment through use of inhibitors. This study summarizes the evolution of the understanding of this damage mechanism and provides recommendations on minimizing PWC.


11:50pm – 12:35pm
Practical of Corrosion Issues in Fabrication Construction, and use plus Welding Codes and Standards
Richard Campbell
Bechtel Fellow & Welding Technical Specialist, Bechtel

Presentation Overview

This presentation will provide an overview of a number of corrosion problems found during weld fabrication and in use. A few corrosion studies performed to establish welding code and standard requirements will be reviewed, such as selection of filler metals for 6% molybdenum stainless steels and establishment of stainless steel weld discoloration levels in the pharmaceutical industry based on corrosion testing.


12:35pm – 1:20pm
External Corrosion of Pipelines: why welds are more susceptible.
Gerald K. Brown (Jerry)
President, Brown Corrosion Services, Inc.

Presentation Overview

The discussion and paper will touch on the primary corrosion control method of coatings and the secondary method of cathodic protection for corrosion control. Covered topic will be the preferential susceptibility of welds, issues with shielding, hard spots, etc. that can affect the system longevity and integrity. Real field experiences will be discussed as well as the ramifications of not performing proper corrosion control work.


1:25pm – 1:40pm

1:40pm – 2:25pm
Corrosion and Welds – Preventing Failure Through Weld Testing and Analysis
Joshua E. Jackson, PhD
CEO & Senior Metallurgist, US Corrosion Services

Presentation Overview

Welds are uniquely susceptible to corrosion because they have such a range of thermal experiences and resulting microstructures. The corrosion of welds is therefore often difficult to predict. Weld qualification and corrosion testing are important in many applications to help ensure long-term integrity. New rapid testing methods for weld qualification will be discussed along with lessons learned from welding failure analyses.


2:25pm – 3:10pm
Tentatively Confirmed
William L. (Bill) Valerioti
Central Engineering Chief Materials Engineer, Chevron Phillips Chemical LP


3:10pm – 3:55pm
A Practical Study of Preferential Weld Corrosion in Produced Water with Elevated Organic Acids and Low Partial Pressure CO2
Jared Hebert

Presentation Overview

After the rapid corrosion failure of an offshore header—only 3.5 yrs of service—was concluded to be attributed to flow-induced preferential weld corrosion, an investigation was conducted into potential mitigation practices. This investigation led to surprises in water chemistry, a direct comparison of weld chemistries between the original platform header (>20 yrs of service) and the recently failed header (3.5 yrs of service), and the development of custom weight loss coupons utilizing the actual intact weld sections of the failed header. This presentation will show the unexpected findings yielded by this study along with an update of the current internally-coated header.


3:55am – 4:40pm
Corrosion of Stainless-Steel Welds in Potable Water & Hydrotest Water: What really matters
Krista L. Heidersbach
Sr. Engineer, Corrosion, Asset Integrity, Phillips 66

Presentation Overview

One of the classic early failures of stainless steel & aluminum systems is due to bacteria introduced during hydrotesting, or a lack of understanding the importance of chemical cleaning. This talk will provide an overview of how things go wrong and what should be considered to prevent early life failures.


4:40pm – 5:00pm
Krista L. Heidersbach
Sr. Engineer, Corrosion, Asset Integrity, Phillips 66


*Conference Schedule Subject to Change

registration & Pricing


Technical Program
6 PDHs Earned

Regular $95 $145

All cancellations MUST BE IN WRITING. If you cancel 35 DAYS PRIOR to the school you will receive a refund of 50%. If you cancel from 34 DAYS to 3 DAYS PRIOR to the conference, you will receive a refund of 10%. NO REFUNDS will be given 3 DAYS or less prior to the conference.

Registrations are non-transferable.



*Sponsorships Subject to Change

Logo Sponsorship

Benefits Include:

  • Company logo and link to their website on conference landing page
  • Company logo placement during virtual event break
  • Complete attendee list


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