What is a potential drawback of using UV light during MPI?

Using UV light during Magnetic Particle Inspection (MPI) indeed raises concerns about safety if appropriate precautions are not taken. Ultraviolet light can be harmful to the skin and eyes, leading to conditions like skin burns or damage to the cornea. Therefore, ensuring the use of proper safety equipment such as UV-blocking eyewear and protective clothing is essential when conducting inspections with UV light. This emphasizes the importance of training and implementing safety protocols to protect workers during inspection processes.

Although the other options may present considerations relevant to MPI, they do not accurately reflect the primary safety concern associated with UV light. For instance, while false defects appearing could be a factor tied to improper technique or material issues, it's not specifically attributed to the use of UV light. In terms of effectiveness, UV light is commonly used for detecting surface defects, and its cost is generally not cited as a significant drawback in the context of MPI. Thus, the potential harms associated with improper handling of UV light stand out as a crucial point to consider.