An NDT Level I may be qualified to perform what according to written instructions?

An NDT Level I technician is typically qualified to perform specific evaluations according to written instructions and procedures. This qualification includes the ability to conduct tests as outlined in the procedures, which often detail the equipment, methods, and techniques to be used in non-destructive testing.

The competency of a Level I technician is generally limited to following established protocols and performing tasks such as test data collection and preliminary evaluations under the oversight of more experienced personnel, such as Level II or Level III technicians.

Moreover, while the reporting of test results is indeed a function of a Level I technician, their role extends beyond merely reporting to include the actual execution of specific evaluations as dictated by written instructions. This encompasses the ability to understand the instructions, operate the necessary equipment, and gather the appropriate data for subsequent analysis. Therefore, option C accurately encapsulates the scope of work a Level I technician may perform under specified guidelines.

The other options do not fully capture the breadth of this role. For instance, focusing solely on calibrations or reporting results does not acknowledge the active engagement in evaluations, which is a crucial aspect of the Level I's responsibilities in the context of non-destructive testing.