This page provides a sample inspection and test plan for fan and blower which is used in the fan and blower source inspection.
The API 673 standard requirements normally are applied for inspection and test plan in manufacturing shop.
The witness of some inspection and test by third party inspector is mandatory and cannot be waived.
Some others must only monitored and fully witnessing is not necessary, for these thing, the inspection man-days etc. depends to the purchaser decision, some prefer stringent monitoring and even assign resident inspector in manufacturing shop and some others relay to quality control system of the manufacture and assign only few days for monitoring points.
These are some of inspection points which need to be witnessed, checked, monitored and reviewed by third party inspector in fan and blower manufacture shop.