Certified Healthcare Safety Professional (CHSP) Practice Exam

What does NFPA 91 standardize?

1. Ventilation for laboratories

2. Exhaust systems for air conveying vapors, gases, and mists

3. Compressed gas safety

4. Commercial cooking ventilation

The correct answer is: Exhaust systems for air conveying vapors, gases, and mists

NFPA 91 specifically focuses on the standards for exhaust systems designed for air conveying vapors, gases, and mists. This standard ensures that such systems are not only effective in removing potentially hazardous materials from work environments but also that they are designed and maintained in a manner that minimizes the risk of fire and protects the health and safety of personnel. Given the nature of NFPA 91, which deals with the safe and efficient movement of exhaust air—particularly in the context of various industrial processes—the standard is crucial for applications where air quality and environmental control are critical. Therefore, the emphasis on exhaust systems plays a significant role in the safety protocols within environments that handle harmful vapors, gases, or mists. In contrast, the other options pertain to different areas of safety standards: ventilation for laboratories covers specific needs for laboratory environments, compressed gas safety deals with the handling and storage of gases under pressure, and commercial cooking ventilation relates to the safety and efficiency in kitchen exhaust systems. While these options represent important safety standards, they are governed by different guidelines and do not fall under NFPA 91.