Abstract
Domestic standard of the leak testing is enacted as Japan Industrial Standards. The conformity is advanced between these domestic standards and ISO (International Organization for Standardization) standard. ISO 9712 (Non-destructive testing.—Qualification and certification of personnel) was revised to include the leak testing of qualification and certification in 2005. It will be executed in the near future though it is thought that it takes time to an international conformity with JIS Z 2305 of a domestic standard. On the other hand, the calibrated leak will be offered by domestic organization.
