Mich. Admin. Code R. 400.18307
Rule 307. Sections 23-2.3.4.2 and 23-2.3.4.3 of the code are amended to read as follows:
23-2.3.4.2. For small facilities, approved smoke detectors shall be installed in compliance with the provisions of national fire protection association pamphlet no. 74, 1989 edition, standard for the installation, maintenance, and use of household fire warning equipment, which is adopted by reference in R 400.18314. Smoke detectors shall be powered from the building electrical system, shall be interconnected, and, when activated, shall initiate an alarm that is audible in all habitable areas. Smoke detectors shall be installed on all levels, including basements, but excluding crawl spaces and unfinished attics. Additional smoke detectors shall be installed for living rooms, dens, dayrooms, and similar spaces. A plug-in, cord-connected unit is not permitted.
Exception no. 1: In buildings protected throughout by an approved supervised automatic sprinkler system that is in compliance with the provisions of section 23-2.3.5 of the code, as amended in R 400.18217, using quick-response or residential sprinklers, smoke detection equipment shall be required in compliance with either the provisions of this section or section 23-2.3.4.3 of the code, as amended in this part.
Exception no. 2: Existing battery-powered smoke detectors, rather than building electrical service-powered smoke detectors, shall be acceptable where, in the opinion of the authority having jurisdiction, the facility has demonstrated testing, maintenance, and battery replacement programs that ensure the reliability of power to the smoke detectors. This exception shall expire 2 years from the effective date of these rules.
23-2.3.4.3. For small facilities, each sleeping room shall be provided with an approved smoke detector that is installed in compliance with the provisions of national fire protection association pamphlet no. 74, 1989 edition, standard for the installation, maintenance, and use of household fire warning equipment, which is adopted by reference in R 400.18314.
Smoke detectors shall be powered from the building electrical system, shall be interconnected, and, when activated, shall initiate an alarm that is audible in all habitable areas. A plug-in, cord-connected unit is not permitted.
Exception no. 1: In buildings protected throughout by an approved supervised automatic sprinkler system that is in compliance with the provisions of section 23-2.3.5 of the code, as amended in R 400.18217, using quick-response or residential sprinklers, smoke detection equipment shall be required in compliance with either the provisions of this section or section 23-2.3.4.2 of the code, as amended in this part.
Exception no. 2: Existing battery-powered detectors, rather than building electrical service-powered detectors, shall be acceptable where, in the opinion of the authority having jurisdiction, the facility has demonstrated testing, maintenance, and battery replacement programs that ensure the reliability of power to the smoke detectors. This exception shall expire 2 years from the effective date of these rules.
Mich. Admin. Code R. 400.18307