Before entering a room suspected of having a chlorine leak, you should do what?

Putting on a Self-Contained Breathing Apparatus (SCBA) is essential before entering a room suspected of having a chlorine leak. Chlorine is a toxic gas that can cause severe respiratory issues or even be life-threatening when inhaled. The SCBA provides a secure, independent air supply that protects the user from inhaling harmful substances, ensuring the individual's safety while working in an environment where toxic exposure is a risk.

While checking ventilation, opening windows, or alerting someone outside are important safety protocols in certain situations, these measures may not be sufficient to protect against the immediate harmful effects of chlorine gas. The SCBA is the most critical safety equipment in this scenario, as it allows for safe entry into a potentially hazardous environment.