Which of the following is not included in the defined scope of NFPA 72?

NFPA 72, the National Fire Alarm and Signaling Code, primarily focuses on the installation, performance, and maintenance of fire alarm systems. Among the aspects it covers, the means of notification, levels of performance, and reliability of various types of fire alarm systems are specifically addressed to ensure that the systems provide effective warning and protection.

The criteria regarding when a fire alarm system is required falls under the broader context of building codes and fire safety regulations, which are not specifically included in the scope of NFPA 72. While this code provides guidance on how to implement fire alarm systems once they are required, it does not directly dictate the circumstances or requirements that trigger the installation of such systems. Understanding this distinction helps clarify the boundaries of NFPA 72 in relation to fire safety and alarm systems, ensuring that professionals can differentiate between regulatory requirements and code standards.