This part of GB/T 18851 specifies the general rules for the verification of penetration testing procedures (for example, according to GB/T 18851.5). The purpose of this inspection is to ensure the proper functioning of the permeate system so that the permeate material does not experience detrimental failure during service. In general, the frequency of calibrating permeable materials and UV sources depends on the frequency and conditions of use. Specific and maximum intervals should follow the manufacturer's recommendations.
GB/T 18851.5-2005 history
2014GB/T 18851.5-2014 Non-destructive testing.Penetrant testing.Part 5:Penetrant testing at temperatures higher than 50℃