In a system using water washable fluorescent penetrant, where should ultraviolet light be available?

In a system utilizing water washable fluorescent penetrant, it is crucial to have ultraviolet light available at the wash station. This is because, after the penetrant application, parts must be properly washed to remove excess penetrant before the examination. The use of ultraviolet light at the wash station aids inspectors in verifying that any penetrant that is meant to be removed has indeed been cleaned off.

Having ultraviolet light in this location allows for immediate inspection of the part post-washing, ensuring that there is no residual penetrant left that could interfere with the subsequent examination process. The visibility of remaining penetrant under ultraviolet light is critical for ensuring that the part is adequately prepared for the next steps in the testing process. This immediate verification helps reduce the chance of misinterpretation of results due to leftover penetrant, making it an essential component of the workflow in this testing method.