Corrosion Chronicles

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)

Benefits and Challenges of Plastic Lined Pipe

In this episode, David Yanik, Product Engineering Manager at Crane ChemPharma, sits down with co-hosts Heather Allain and Marc Cook to discuss plastic-lined pipe. They chat about liner manufacturing methods, permeation, liner flaring, factory versus field flaring, predicting remaining life, gaskets, retorque, torque values, Belleville washers and damage mechanisms.
 
Corrosion Chronicles is produced by Association Briefings.

Benefits and Challenges of Corrosion Resistant Masonry Lined Systems

In this episode, Kevin Brooks, president of Knight Material Technologies, sits down with co-hosts Heather Allain and Marc Cook to discuss corrosion testing for linings. Tune in as they explore various topics including inspection methods for linings, the use of thermal imaging for inspections, core sampling techniques, equipment cleaning procedures, safe methods for equipment storage, equipment size ranges, chemical expansion of bricks, and considerations for thermal shock and external insulation.
 
Corrosion Chronicles is produced by Association Briefings. 

Benefits and Challenges of Stainless Steels

In this episode, Gary Coates from the Nickel Institute sits down with co-hosts Heather Allain and Marc Cook to discuss stainless steels. The three chat about: the various series of stainless steel; magnetism as an identification technique; changes in stainless compositions as a function of time; stress corrosion cracking; sustainability in the context of stainless steel; PREN number; material suitability evaluation; temperature limits; and passivation.
 

Benefits and Challenges of Fiber-Reinforced Composites

In this episode, industry veteran Dale Keeler, Associate Director at MTI, sits down with co-hosts Heather Allain and Marc Cook to discuss fiber-reinforced composites (FRP). The three chat about: fabrication methods; the types of fiber, resin and additives; differences in design standards and practices around the globe; how material properties used in design are determined and validated; inspection and life assessment techniques; flange design; and thermal shock.
 
Show notes
Public bookstore – Guide for Repair and Alteration of FRP Equipment: 
https://marketplace.mimeo.com/mtiglobal/product/e3fb7e600fb4423b9532394fd8e7ec7b
 
Members bookstore – Guide for Repair and Alteration of FRP Equipment:
https://marketplace.mimeo.com/mtiglobalMEMBERS/product/1868c1a40bd94e05be701ab394d89498
 
Embedded RFID Sensor Technology
https://www.mti-global.org/rfid-microsite/monitor-frp-vessel-integrity-with-rfid-sensors
 
Risk Based Inspection for FRP Tanks
https://access.mti-global.org/record/562?ln=en
 
Global FRP Standards Comparative Report
https://access.mti-global.org/record/337?ln=en
 
Accelerated Testing of FRP
https://access.mti-global.org/record/78?ln=en
 
Corrosion Chronicles is hosted by Heather Allain and Marc Cook.Heather Allain is the Executive Director of Materials Technology Institute (MTI). She has been with the organization for 16 years and previously held an Associate Director position facilitating MTI’s Project work. Before MTI, she worked as a Materials Engineer at DuPont for 15 years, and has a BS in Materials Engineering from Rice University.Marc Cook has a BS in Chemical Engineering from Purdue University and an MS in Material Engineering from NC State. He has worked for Dow for 26 years and at a contracting company in Cincinnati for 3 years. His current role at Dow is leading the Technical Services Team for Ceramics and Refractory at Dow and providing materials engineering support to Dow’s Freeport, Texas site.Disclaimer: Marc Cook is an employee of Dow but is speaking purely in a personal capacity and is not talking about or recommending Dow products.
 
Corrosion Chronicles is produced by Association Briefings.