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b. Power Failure — Hazard Identification. Power failure can <br /> result from a variety of related causes, including sagging lines <br /> due to hot weather, flashovers from transmission lines to <br /> nearby trees, and incorrect relay settings. According to the <br /> electric utility industry's trade association, the potential for such <br /> disturbances is expected to increase with the profound <br /> changes now sweeping the electric utility industry. <br /> To address times when generating capacity is tight, or falls <br /> below consumer demand due to State or local emergencies, <br /> the Florida Electrical Emergency Contingency Plan was <br /> developed. Alerts have been created to give early warning of <br /> potential electricity shortfalls and bring utilities, emergency <br /> management officials, and the general public to a state of <br /> preparedness. The Contingency Plan consists of four <br /> separate phases and procedures for each phase. (Florida <br /> Reliability Coordinating Council, 2011). The four phases are: <br /> • Generating Capacity Advisory— A Generating Capacity <br /> Advisory is primarily for information purposes. It starts <br /> utility tracking activities, and it initiates inter-utility and inter- <br /> agency communication. No action by the public is required. <br /> General information may be distributed to consumers to <br /> forewarn them of conditions if necessary. <br /> • Generating Capacity Alert—A Generating Capacity Alert <br /> starts actions to increase reserves. Available emergency <br /> supply options will be explored. When reserves fall below <br /> the size of the largest generating unit in the state, loss of <br /> that size unit to an unexpected mechanical failure could <br /> lead to blackouts somewhere since insufficient backup is <br /> available. <br /> • Generating Capacity Emergency — A Generating <br /> Capacity Emergency occurs when blackouts are inevitable <br /> somewhere in Florida. Every available means of balancing <br /> supply and demand will be exhausted. Rolling blackouts, <br /> manually activated by utilities, are a last resort to avoid <br /> system overload and possible equipment damage. <br /> Frequent status reports are provided to agencies and the <br /> media. The Division of Emergency Management will <br /> consider using the Emergency Broadcast System to inform <br /> citizens of events and to direct them to available shelters if <br /> conditions warranted. Recognizing the consequences of a <br /> Indian River County Comprehensive Emergency Management Plan Basic Page 62 <br />