What is the first action to take when constructing an inspection plan?

When constructing an inspection plan, the first action is to identify the critical dimensions to inspect. This step is crucial as it establishes the foundation for the entire inspection process. By identifying the critical dimensions, you determine which features of the machined part are essential to its functionality and compliance with specifications. This ensures that the inspection process focuses on areas that could impact the overall quality and performance of the part.

Once the critical dimensions are determined, you can then proceed to select the appropriate measuring tools, gather samples for testing, and train inspectors on protocols, all of which are secondary steps that rely on the clarity provided by knowing what needs to be inspected first. The prioritization of critical dimensions helps in managing resources effectively and ensuring that the inspection process is both efficient and effective.