Corrosion Chronicles

Mining and mineral processing

In this episode, Steven Clarke joins co-hosts Heather Allain and Marc Cook to dive into the world of mining and mineral processing. They break down the differences between hydrometallurgy and pyrometallurgy, explore various leaching methods, and discuss solvent extraction and electrowinning. The conversation highlights how water and ore contaminants impact material compatibility, the challenges of abrasion resistance, and what new materials the mining industry could benefit from.  
 
Corrosion Chronicles is produced by Association Briefings.

Failure Analysis and Incident Response

In this episode, Gary Whittaker, retired Engineering Fellow from Eastman Chemical and MTI Fellow, sits down with co-hosts Heather Allain and Marc Cook to recount some past failures he was involved in failure analysis on. They chat about: an API storage tank that leaked and contaminated a nearby river, some Nickel-Chrome-Moly alloy piping with stress cracking found due to indications on an associated clad vessel, and some Nickel-Moly alloy piping with stress cracking.
 
Corrosion Chronicles is produced by Association Briefings.

Creep

In this episode, Arun Sreeranganathan, principal at Stress Engineering Services, sits down with co-hosts Heather Allain and Marc Cook to discuss creep in the context of chemical facilities. They chat about: the definition of creep, homologous temperature, creep in plastics, contrasting creep with SRC, How the ASME code handles the subject, creep curves, sources for creep info, how creep data is developed, using uniaxial data to design for multiaxiality in equipment, and methods for determining remaining life from creep.
 
Corrosion Chronicles is produced by Association Briefings. 

Corrosion Testing

In this episode, Ben McCurry, Senior Expert of Materials Engineering and Inspection at BASF Corporation, joins co-hosts Heather Allain and Marc Cook to dive into the world of corrosion testing. They cover a wide range of topics, including the purpose of corrosion testing, lab testing versus in-situ methods, and the use of corrosion resistance tables. The discussion explores valuable insights from sister plants, decision-making criteria for conducting tests, and the design of coupons. They also tackle advanced topics like high-pressure/high-temperature data, the effects of aeration and agitation, post-exposure examination, grinding on coupons, field coupon accessibility, and how process conditions impact field testing results.
 
Corrosion Chronicles is produced by Association Briefings.

Stress Relaxation Cracking

In this episode, Jan-willem Rensman, Fellow at Fluor and subject matter expert in Metallurgy and Welding, joins co-hosts Heather Allain and Marc Cook for an in-depth discussion on stress relaxation cracking (SRC). Together, they cover topics including: defining SRC and understanding where and when it occurs, the differences between SRC and creep, managing residual stresses in welds, and offering design and fabrication strategies to prevent SRC. The conversation also touches on shop versus field weld considerations, selecting appropriate welding techniques, SRC guidelines in design codes, recommended resources for design standards, and methods for SRC detection and repair.
 
Corrosion Chronicles is produced by Association Briefings.Show notesReferences which contain guidelines for SRC mitigation:API TR 942-B (2017). Materials, Fabrication, and Repair Considerations for Austenitic Alloys Subject to Embrittlement and Cracking in High Temperature 565°C to 760°C (1050°F to 1400°F) Refinery Services, American Petroleum Institute, Washington, DC.Fahrion, M. E., Brown, J. C., Hassell, J. C., & Birke, A. (2003, March). Technical basis for improved reliability of 347H stainless steel heavy wall piping in hydrogen service. In NACE CORROSION (pp. NACE-03647). NACE.Penso, J., & Shargay, C. (2021, July). Stress Relaxation Cracking of Thick-Wall Stainless Steel Piping in Various Refining Units. In Pressure Vessels and Piping Conference (Vol. 85345, p. V004T06A044). American Society of Mechanical Engineers.Rensman, J. W., Spindler, M. W., & Shargay, C. (2023, July). Stress Relaxation Cracking, A Misunderstood Problem in the Process Industry. In Pressure Vessels and Piping Conference (Vol. 87486, p. V005T06A060). American Society of Mechanical Engineers.

Stress Corrosion Cracking

In this episode, Dale McIntyre, a designated professional with the Materials Technology Institute, joins co-hosts Heather Allain and Marc Cook to dive into the topic of anodic stress corrosion cracking, with a specific focus on chloride stress corrosion cracking (CSCC). They explore key SCC degradation mechanisms and discuss crucial factors in assessing CSCC risks. The conversation covers a range of topics, including reducing surface stress to minimize risk, temperature thresholds for CSCC, crack initiation timelines, NDE methods, the use of duplex stainless steel, insulation, painting, CSCC repair, and the role of castings in managing corrosion.
 
Corrosion Chronicles is produced by Association Briefings.
 
Show notes
Members: Environmental Cracking
Public: Order Environmental Cracking

Flexible Hoses

In this episode, Steve Springer, a materials engineer at Chemours Engineering, joins co-hosts Heather Allain and Marc Cook to discuss the critical role of flexible hoses in chemical facilities. They cover a range of topics, including a tragic incident that resulted in a fatality, the importance of having a robust hose program, and key considerations in hose design and construction. The conversation also touches on appropriate and inappropriate uses, corrosion allowance, inspection protocols, full penetration welds for end connections, pressure and vacuum ratings, and best practices for installation.
 
Corrosion Chronicles is produced by Association Briefings.
 
Show notes
To download the Reliability Guidelines for Flexible Hoses book:
Members: https://access.mti-global.org/record/571?ln=en&v=pdf
Nonmembers: https://www.mti-global.org/participate/public-library/flexible-hose-reliability-guide

Storm Damage Preparation and Assessment

In our season 2 premier, Ed Naylor, Senior Materials Engineering Associate at Nouryon, sits down with co-hosts Heather Allain and Marc Cook to discuss storm damage in the context of chemical facilities. They explore how to identify site-specific vulnerabilities, the unique hazards hurricanes pose, and essential preparation steps before storm season. The discussion also covers the role of hazard response teams, the cascading effects of storm damage, post-storm assessments, and the material degradation mechanisms to anticipate.
 
Show notes
Ed would like to include his thanks to his colleagues Frank Upton, Rodney Ward and Chris Waddell.
Damage Assessment: Investigating Chemical Plant Fires, Explosions and Storm Damage book: https://www.mti-global.org/participate/public-library/investigating-chemical-plant-fires-explosions-storms
Ed Naylor is a Senior Materials Engineering Associate with Nouryon, formerly AkzoNobel.  
He has a Bachelors of Science in Chemical Engineering from Cornell University and a Masters of Science in Metallurgical Engineering from The Ohio State University.  
For over 35 years, he has been involved in all aspects of materials technology, inspection, corrosion engineering, failure analysis, mechanical integrity, process safety management and maintenance networking.  He holds API certifications for Pressure Vessel, Piping, Aboveground Storage Tank and Fixed Equipment source inspection.
He represents Nouryon’s interests in several societies including AMPP, PIP, ASTM  and the Materials Technology Institute [MTI].  He has served MTI as TAC Chair, Board Chair and a Director for over 20 years.  In 2022, he received his highest professional honor when designated as an MTI Fellow.  Ed enjoys fishing, cooking and spending time with his wife Jennifer.  They have 2 grown sons.
 
Corrosion Chronicles is produced by Association Briefings.
 

Benefits and Challenges of Tantalum

In our season 1 finale, host Heather Allain flips the script by interviewing her co-host, Marc Cook, for an in-depth discussion on tantalum. They explore the various alloys of tantalum, its market dynamics, pricing trends, and the types of equipment where tantalum is used. Tune in to learn about hydrogen embrittlement, fabrication basics, inspection and testing methods, and repair techniques. 
 
Corrosion Chronicles is produced by Association Briefings.

Benefits and Challenges of Titanium and Zirconium

In this episode, Richard Sutherlin, a metallurgical and corrosion consultant, sits down with co-hosts Heather Allain and Marc Cook to discuss titanium and zirconium alloys. They chat about the unique properties of specific grades of titanium, their various applications, and the challenges of identifying and assessing hydriding in titanium tubes. They also discuss safety considerations and proper procedures when working with pyrophoric materials like zirconium and titanium.
 
Corrosion Chronicles is produced by Association Briefings.
 
Show notes
Best Practices for Reactive & Refractory Metals Five Volume Set Available for Purchase (mti-global.org)  (public)
Best Practices for Reactive and Refractory Metals (mti-global.org) (member)