| Résumé : |
Coating failure analysis draws many parallels to these shows. In fact, you can almost envision it: a camera pans over a work site, dramatic music plays as a water tank is being drained. The manway slowly swings open to reveal massive and extensive blistering of the newly applied interior coating system. The owner frantically calls to report the dire situation he has just discovered. Cut to opening credits.
The most dramatic moment of the show is usually when some small detail that had been previously overlooked is discovered. The breakthrough can come from the investigator, the laboratory, even someone with minimal involvement in the case — a taxi driver, or a neighbor with a different perspective of what all the information means.
This can often be said for coating failure investigations as well. The key to solving these cases is to combine all of the knowledge gained during the investigation and let the data tell the story.
The type of information that can be obtained from the field investigation is much different than the data produced by the lab. The field investigation gives the investigator the opportunity to make observations on and around the structure, observe for coating failure patterns, test adhesion to the substrate, inspect the surface profile, sift through paint cans, interview individuals on-site — simply, the field investigator takes a more hands-on approach. The laboratory investigation gives the added benefit of examining coating samples from the field using sophisticated analytical techniques to gain information that would not be readily obtained without the proper instrumentation.
Two different scenarios will be described, one a laboratory investigation without the benefit of direct field knowledge and one that combines both field and lab investigations. |
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The missing piece in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 12 (12/2017)
