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Does the BlueLine blue light inspection system meet code?
Three answers - Yes, No, and It Doesn't Matter, depending on your needs. Let's look at each of these:
If you do a visible light inspection with dual use particles you can use the blue light and glasses to enhance the contrast, and thus the sensitivity, of that inspection. This conforms to ASTM E709.
ABS - The ABS governing body has evaluated the blue light inspection system and responded with the following:
"ABS has no objection to the use of blue light/yellow filter technology in place of ultraviolet light for fluorescent magnetic particle and liquid penetrant testing of weldments subject to the following:
BlueLine NDT can provide the equipment and guidance needed to meet these requirements.
If your inspection requirements call for ultraviolet light under dark conditions (less than 2 fc), governed by a document such as ASTM E1417, E1444 or similar, then the substitution of the blue light inspection system is NOT yet acceptable. While we can demonstrate the technical and performance equivalence of our blue light system (see the pages on performance with particles and penetrants), it takes time to get this into the code. BlueLine NDT is working with the standards agencies to address the technical issues and provide the data needed to incorporate the blue light inspection system into code documents.
It Doesn't Matter
As described on the Applications page, many companies are using BlueLine's blue light fluorescence technology to increase productivity in ways that are not governed by standards. It's often not even a question of replacing ultraviolet light, but of using fluorescence where it would not have been used before.
As we learn of any new ways that the blue light inspection system is being used we will post them on the Applications page.