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(CHAPTER 9 FIRE PROTECTION SYSTEMS) (SECTION 904.0 FIRE SUPPRESSION SYSTEM) 904.9 Use Group R-2: An automatic fire suppression system shall be provided throughout all buildings with an occupancy in Use Group R-2, other than residential care facilities, in accordance with Section 906.2.1 or 906.2.2 Exception: Buildings which meet all of the following conditions: Maximum of two stores, counting a basement as a story; Maximum of 12 dwelling units per fire area; and Each dwelling unit shall have at least one door opening to an exterior exit access that leads directly to the exits required to serve that dwelling unit. (SECTION 906.0 FIRE SPRINKLER SYSTEM) 906.10 Water flow tests: Water flow tests for fire sprinkler systems shall be conducted between the hours of 8:00 a.m. and 4:30 p.m., Monday through Friday. 906.10.1 Water flow safety factor: A safety factor shall be applied to all flow tests for the sprinkler systems. A parallel curve shall be drawn to the actual flow test curve that has been reduced by twenty percent (20%) of the static pressure. A sprinkler system design shall not exceed the twenty percent (20%) curve. (SECTION 920.0 SINGLE-AND MULTIPLE STATION SMOKE DETECTORS) 920.1.1 Existing buildings: Smoke detectors installed in an existing building where there is no change in use and where the building is not being altered or substantially rehabilitated, shall not be required to be interconnected and shall be permitted with either an AC primary power or a monitored battery power source. (SECTION 921.0 FIRE EXTINGUISHERS) 921.2 Where required: A portable fire extinguisher shall be installed in the following locations in accordance with NFPA 70 listed in Chapter 35: 2. 3. 4. In all buildings of Use Group A, B, E, F, H, M, I-1, I-2, R-1 or S. In all areas containing commercial kitchen exhaust hood systems. In all areas where fuel is dispensed. In all areas where a flammable or combustible liquid is used in the operation of spraying, coating, or dipping. 17