This document specifies the general provisions and the requirements for imperfection, deficiency measurement and evaluation of the application of A-scan pulsed reflection ultrasonic testing for turbing-blades in-service.
This document is applicable to the testing of turbing-blades in-service(hereinafter referred to as “blade” or “blades”) in the non-disassembled state, and is not applicable to the blade with coating. The ultrasonic testing of the blade in the installation stage is carried out with reference to this document.
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