| Date | November/December 2003 |
| Volume | 9 |
| Issue | 6 |
| Return to Journal Index | |
November/December 2003 Inspectioneering Journal Article Index
Ammonia stress corrosion cracking (SCC) has been around a long time. Most everyone has experienced it from time to time. It's not uncommon in brass tubes in cooling water service that is contaminated with ammonia due to biological growths or other...
Carbonate cracking (CC) of carbon steel has seen an increase recently in frequency and severity in some refinery cat crackers, especially in fractionator and gas processing overheads. Some gas scrubbing units are also susceptible. CC is a form of...
Chloride stress corrosion cracking (SCC) is about as well known as any SCC mechanism can be, so I won't dwell much on it here, but want to mention it for the sake of completeness and hopefully mention something that is not as commonly known about...
Hydrogen Embrittlement (HE) is an insidious form of degradation that can strike during equipment fabrication, cleaning, repairs or while in-service. It stems from the infusion of atomic hydrogen into some higher strength steels that then leads to...
Liquid Metal Cracking (LMC) (aka "liquid metal embrittlement") is another insidious form of cracking that strikes when you least expect it. It most commonly afflicts austenitic stainless steels, but can afflict other copper, nickel and aluminum...
Traditional pressure vessel inspections often require taking assets out of service. However, MISTRAS’ Non-Intrusive Inspection (NII) programs provide data as good or better than internal inspections, while assets remain in service. NII is...
There are a variety of forms of wet H2S cracking. In this short article I will focus on two of the most common forms: hydrogen induced cracking and stress-oriented hydrogen induced cracking (HIC/ SOHIC). HIC is often fairly innocuous (but not...
The following article on the art and science of cooling tower inspections is part one in a series. This first is a primer. We recommend that readers consider using this article to edit their engineering practices for cooling tower inspection...
In the previous articles, we have put all the Pre-Turnaround and actual Turnaround activities in place to get the job safely done. Now we need to find the API Inspectors and have them approved by the client as quickly as possible. I have indicated...
