Which NFPA standard addresses the need for cooling periods between sequential evolutions?

The focus on cooling periods between sequential evolutions in live fire training is addressed by NFPA 1403, which specifically governs the conduct of live fire training exercises. This standard includes provisions designed to ensure the safety and health of participants, including guidelines for managing heat stress and ensuring that firefighters have adequate time to cool down before engaging in additional evolutions. Cooling periods are crucial to prevent overheating and ensure that firefighters remain capable and alert throughout the training process.

The other standards mentioned do not explicitly relate to the cooling periods between evolutions in live fire training exercises. NFPA 1033 pertains to the qualifications of fire investigator personnel, NFPA 1402 deals with the facility design and safety considerations for live fire training facilities, and NFPA 1670 focuses on technical rescue operations. While all these standards contribute to fire safety in their respective areas, NFPA 1403 is the one specifically addressing the operational and health-related aspects of live fire training.