Theinspector’s responsibilities, as defined in API 936, include visual and mechanical inspection of installed linings.Hammer testingis one such non-destructive method used to detect delamination, voids, and rebound areas by listening for variations in sound. It is a practical method during and after installation.
Other tasks like providing compliance documentation or water testing are typically done by the contractor or laboratory personnel.
[Reference:, API Std 936, Section 7.1 – “Inspectors shall perform hammer testing as part of surface inspection to detect voids and delamination.”]
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