What is a primary safety measure required when operating high-class lasers?

Using personal protective equipment (PPE) suitable for the laser class is a fundamental safety measure when operating high-class lasers. For high-powered lasers, the potential for eye and skin injury is significant, making appropriate PPE essential to minimize exposure to harmful radiation. This equipment can include safety glasses specifically designed to filter the wavelengths of the laser being used, face shields, and other protective clothing that covers exposed skin.

Selecting the right PPE is vital because different lasers emit light at various wavelengths and intensities that can pose different risks. Therefore, using approved and tested personal protective equipment helps ensure that individuals working with or around high-class lasers are adequately protected from the hazards presented by these powerful devices. This proactive measure plays a crucial role in ensuring a safe working environment.

The other options do not directly address safety measures relevant to the operational risks associated with high-class lasers, which further emphasizes the importance of PPE in laser safety protocols.