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160 <br />D RAFT North Carolina 911 Board Operating Standards — Version 04/14/2011 D RA FT <br />1 4.5.8.4 Fuel to operate the engine -driven generator for a minimum of 24 hours at full load shall be <br />2 available on site. <br />3 4.5.8.5 Equipment essential to the operation of the generator shall be supplied with standby power from <br />4 the generator. <br />5 4.5.8.6 Generators shall not use the public water supply for engine cooling. <br />6 4.5.9 Uninterruptible Power Supply (UPS) and Battery Systems. A UPS and battery system shall be <br />7 installed and be sufficient to prevent power surges from damaging equipment in the 911 Emergency <br />8 Center as well as provide power for all essential 911 Emergency Center operations until the backup power <br />9 source can be fully activated. <br />10 4.5.9.1 Each UPS shall be provided with a bypass switch that maintains the power connection during <br />11 switch over and that is capable of isolating all UPS components while allowing power to flow from the <br />12 source to the load. <br />13 4.5.9.2 The following UPS conditions shall be annunciated in the operations room: <br />14 (1) Source power failure, overvoltage, and under- voltage <br />15 (2) High and low battery voltage <br />16 (3) UPS in bypass mode. <br />17 <br />18 <br />19 5.1 General <br />Section 5 Construction <br />20 As a condition for receipt of a grant from the North Carolina 9 -1 -1 Board for any type of new <br />21 construction or for a renovation of an existing structure and/or facility incorporated into the construction <br />22 agreement(s) shall be the following requirements. <br />23 5.1.1 The requirements in Section 4 Construction, shall apply only to new construction and <br />24 construction renovations funded by the North Carolina 911 Board. Existing Public Safety Answering <br />25 Point facilities are encouraged to meet these standards, but are not required to meet these standards. <br />26 5.2 HVAC. <br />27 5.2.1. HVAC systems shall be designed to maintain temperature and relative humidity within limits <br />28 specified by the manufacturer of the equipment critical to the operation of the Public Safety Answering <br />29 Point. <br />30 5.2.2 HVAC systems shall be independent systems that serve only the Public Safety Answering Point. <br />31 5.2.3 HVAC system intakes for fresh air shall be arranged to minimize smoke intake from a fire inside <br />32 or outside the building and to resist intentional introduction of irritating, noxious, toxic, or poisonous <br />33 substances into the HVAC system. <br />Page 7 <br />