LUBA RET. EX 076/077 RE-E - Laserfiche WebLink

Equipment and Utility Identification A routine function in any advanced fire suppression operation is to control (usually shut down) utilities. Making it easy to locate and identify utilities will speed firefighters' progress. Electric, gas, and other fuel controls should be located either in dedi- cated rooms with exterior marked entrances, or at exterior locations away from openings such as win- dows or doors (Figure 2.20). NFPA 170, Standard for Symbols for Use by the Fire Service, contains symbols for marking gas and electric shut-offs. Air handling equipment should also be prominently marked, especially if located out of sight. The fire service may need to quickly access rooms containing the following equipment: water service, control valves, fire pumps, electric service, switchgear, generators, fans and other mechanical equipment. Lettering for this signage should be at least six inches high with a 1h inch stroke (thickness of lines in each letter), unless the standard symbols are used. Marking of fire protection system devices within buildings is discussed further in the chapters on fire alarm systems, sprinkler systems, standpipe sys- tems, and fire department connections. i Elevators The use of elevators during fire incidents is very controversial. Elevators are not usually used for occupant evacuation. One exception is trained operators evacuating occupants with special needs. They should, however, be designed for fire service use. The elevator standard widely referenced in building and fire codes is ANSI A17.1, Safety Code for Elevators and Escalators. It details the two phases of emergency operation. Phase 1 of elevator emergency operation con- sists of a recall system that automatically sends ele- vators to a "designated" primary level. This occurs upon activation of a manual recall switch at the designated level'or upon activation of smoke detec- tors in the elevator lobbies, hoistways, or machine rooms. If a detector is activated on the designated primary level, the elevator cars go to an alternate floor level. In either case, the elevators are ren- dered unavailable to building occupants. They remain at the recall level with doors open, so the fire service can quickly determine that they are clear of occupants and then use them in a manual control mode. The designated recall level usually is the ground or entry level. This will facilitate rapid fire depart- ment access. For buildings with entrances on multiple levels, designers should consult the fire department about the entrance firefighters intend to use initially. The fire department may also prefer to coordinate the designated recall level with the location of the fire alarm annunciator, fire control room, and/or the fire department connection. Phase 2 emergency operation permits the fire service to use the elevators under their manual control. Phase 2 operation overrides all automatic controls, including the Phase 1 recall. Solid-state elevator control equipment operates correctly only if maintained within a certain tem- perature range. NFPA 101, NFPA 5000, and the IBC require independent ventilation in machine rooms containing solid-state equipment that con- trols elevators traveling over certain distances. Whenever such elevators receive emergency power, their corresponding machine room ventila- tion would also,receive emergency power. These features help maintain at.least one elevator opera- tional throughout fire suppression operations. Currently, ANSI A17.1 requires an automatic power shutdown feature for elevators that have fire sprinklers located in their machine rooms and, under certain conditions, in hoistways. Shutdown C ~I I FVICE SERVICE FEATURES 01 BUILDI' G`S.AND FIRE PROTECTION 5Y'STEVS 23 . 139 (2.21) Shopping complex diagram with views of the overall complex as well as the' interior tenant diagram of the building in which the diagram is located.