Agenda - Council - 05/25/2004 - Laserfiche WebLink

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Warning sirens shall comply with the FEMA Outdoor Warning Systems Guide, CPG 1-17. This guide requires an ATTACK WARNING which is a 3 to 5 minute wavering tone, and an ATTENTION or ALERT WARNING which is a 3 to 5 minute steady signal. Once the alert signal attains a peak in frequency, the frequency of the signal shall not sweep or fluctuate. In order to meet the monthly test requirement, the siren must be programmable for a SYSTEM TEST which is a I minute steady tone. Siren controls must be equipped with an adjustable timer which automatically cancels after the present 1 to 5 minute durations. Each control shall have provision for at least one additional signal for local emergency signaling if the need arises. Do The siren shall operate with a current draw of less than 10 amperes. The battery back--up system shall have a capacity to provide continuous full power for a minimum of fifteen (15) minutes. Battery capacity shall be maintained by a high quality, well-filtered and regulated charger (UL labeled, CSA Certified). The charger shall be capable to recharge a set of fully discharged batteries within 12 hours. Charger shall be supplied with proper controls to turn off the VAC primary power and include indicators for monitoring battery voltage. The control unit must have convenient terminals for connecting land-line and radio activation lines. The siren must be compatible with the Healy-Ruff radio activation system. Amplifiers shall be of modular design, 100% solid state. Amplifier performance must have less than 4% distortion. Each amplifier must have convenient test points or LED indicators for monitoring outputs to speaker driver for test purposes, or measuring impedance of speaker circuitry. Each assembly shall be supplied with 50 feet of weather-proof interconnect cable suitable for outdoor installation with or without conduit. All exposed metal surfaces, unless stainless steel, shall be properly finished to inhibit deterioration and corrosion due to weather and sun. All internal wiring for siren operation shall be permanently secured and protected from direct precipitation. All wiring entrance ways to enclosures housing electronic equipment shall not preclude wall mounting. Siren speaker design shall be of modular construction. Modular design shall provide siren operation despite single speaker damage or physical hazards from the surroundings or mechanical failure of the structure for any reason. Sirens shall operate in temperature ranges of -35 degrees C to +85 degrees C while batteries are maintained at -18 degrees C or higher. The effects of rain, ice, or snow shall not hinder operations. All sirens shall have sufficient mechanical strength and sufficient torque to withstand and operate in winds up to 100 MPH.