Which national standard developed by UL sets forth the requirement for indoor smoke detection?

The national standard developed by UL that sets forth the requirement for indoor smoke detection is ANSI/UL 268. This standard provides guidelines for the construction, performance, and testing of smoke detectors, ensuring their reliability and effectiveness in detecting smoke within buildings. By adhering to this standard, manufacturers can develop smoke detectors that meet specific safety and performance criteria, which are essential for maintaining safety standards in residential and commercial spaces.

In contrast, NFPA 72 refers to the National Fire Alarm and Signaling Code, which covers a broader range of fire alarm systems, including installation, maintenance, and testing requirements, but does not specifically focus solely on smoke detector performance. ISO 9001 sets forth quality management system requirements but does not deal specifically with fire safety or smoke detection devices. NIOSH 8010 relates to occupational safety and health guidelines and is not concerned with smoke detection standards. Thus, ANSI/UL 268 is the definitive reference for the requirements of smoke detection, making it the correct choice for this question.