DYE PENETRANT TESTING

Consider that 90% of plates tested have a 10% fail rate. Basically, random checking of 10-20% cannot eliminate all bad plates, ACME guarantees 100% inspection before leaving our factory.
Although Dye-Testing is the most time consuming and expensive method for leak detection, ACME chooses the process for its reliability and effectiveness. Early discovery of plate defects alleviates cross-contamination concerns, saving costly downtime in the future.
Other Non Destructive Testing Methods:
Ultraviolet Testing
The ultraviolet test is used upon request, usually specialty applications where fluid mediums can only be detected under UV light.
One side of the plate is sprayed with a unique dye-penetrant, then subsequently inspected under UV light to reveal cracks, pinholes, or failures.
Vacuum Testing
Vacuum testing of plates is used for welded and semi-welded heat exchangers plates. Dye-penetrant methods cannot be used with these plate types. This method will detect if a plate has a leak, however, it will not identify the location of the failure.