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415.11.3.2 Mechanical ventilation.
Service corridors shall be mechanically ventilated as required by Section 415.11.1.6 or at not less than six air changes per hour.
415.11.3.3 Means of egress.
The distance of travel from any point in a service corridor to an exit, exit access corridor or door into a fabrication area shall be not greater than 75 feet (22 860 mm). Dead ends shall be not greater than 4 feet (1219 mm) in length. There shall be not less than two exits, and not more than one-half of the required means of egress shall require travel into a fabrication area. Doors from service corridors shall swing in the direction of egress travel and shall be self-closing.
415.11.3.4 Minimum width.
The clear width of a service corridor shall be not less than 5 feet (1524 mm), or 33 inches (838 mm) wider than the widest cart or truck used in the service corridor, whichever is greater.
415.11.3.5 Emergency alarm system.
Emergency alarm systems shall be provided in accordance with this section and Sections 415.5.1 and 415.5.2. The maximum allowable quantity per control area provisions shall not apply to emergency alarm systems required for HPM.
415.11.3.5.1 Service corridors.
An emergency alarm system shall be provided in service corridors, with no fewer than one alarm device in each service corridor.
415.11.3.5.2 Exit access corridors and exit enclosures.
Emergency alarms for exit access corridors and exit enclosures shall comply with Section 415.5.2.
415.11.3.5.3 Liquid storage rooms, HPM rooms and gas rooms.
Emergency alarms for liquid storage rooms, HPM rooms and gas rooms shall comply with Section 415.5.1.
415.11.3.5.4 Alarm-initiating devices.
An approved emergency telephone system, local alarm manual pull stations, or other approved alarm-initiating devices are allowed to be used as emergency alarm-initiating devices.
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