Which NFPA standard governs the use of open-circuit breathing apparatus in safety settings?

Which NFPA standard governs the use of open-circuit breathing apparatus in safety settings?

• A. NFPA 1983
• B. NFPA 1981
• C. NFPA 1982
• D. NFPA 1001

Answer: (B)

Open-circuit breathing apparatus in safety settings is governed by NFPA 1981. This standard specifies the requirements for open-circuit self-contained breathing apparatus used by emergency services, including design and performance criteria for air-supply components, regulators, facepieces, and transmission gear; it also covers testing, inspection, maintenance, and training to ensure the wearer can rely on a clean air supply in hazardous atmospheres. A key point is that open-circuit means the exhaled air is released to the surroundings, and NFPA 1981 sets the rules to ensure safe operation under those conditions. Other NFPA standards in the list address different topics, such as firefighter qualifications or safety alert systems, and do not specifically govern the use of open-circuit breathing apparatus.