Lightning Alley is not just a catchy name for a street or the local bowling lanes. It's the name dubbed to a notorious region in central Florida that is in the heart of the most lightning-prone area in the entire country. And that lightning strike may come at the most inopportune time.
Not only can this force of nature cause bodily injury and severe damage to property, it also has the power to disrupt or destroy a police department's 9-1-1 communications system, which is intended to assist residents during an emergency. That's exactly what happened in the middle of one Florida storm.
When a Walmart in the city of Bushnell was relocated, the facility was donated to the county for their use. The Sumter County Sheriff's Department decided to open its new offices in this building, including housing its emergency communications there.
One serious problem was that the electrical system was built for a 1970's vintage department store, not a critical communications and public safety facility. During one lightning storm in particular, the 9-1-1 system failed, leaving county residents without police, fire or ambulance response.
Inspection of the existing electrical system showed that it was badly flawed, mainly due to improper connectors and poor bonding and grounding. The communications tower, for example, had its own independent and inadequate grounding. The emergency generators and building structure were all independently grounded, each with its own ground rod, exposing its poor design. The main grounding electrode consisted of a single galvanized steel rod from the 1970s, with very high resistance to earth.
A new system was designed and installed for under $40,000, a minimal cost considering the value of the equipment protected, and improved public safety it brought to the residents of Sumter County.
"To be effective, the entire grounding system needs to be properly designed, using listed connectors and corrosion resistant materials," said Dave Brender, National Program Manager for the Copper Development Association, CDA. "Lightning protection systems in particular must be well-grounded to work properly, and could make matters worse if they are not. Copper and its alloys are the most common materials in use for this application because they provide superior corrosion resistance and avoid oxidation problems at connections.
Copper is also easy to install and durable," Brender added.
Central Florida is not the only region in the U.S. affected by severe weather. Similar 9-1-1 and broadcast facilities are employed in areas all over the country where communications is critical and the chances for lightning strikes are quite high. Having proper copper-based grounding and bonding should be a top priority where an entire system can get crippled by lightning.
Related Stories
| May 1, 2012
White paper discusses benefits of diaphragm and piston flushometer valves
The white paper highlights considerations that impact which type of technology is most appropriate for various restroom environments.
| May 1, 2012
Time-lapse video: World Trade Center, New York
One World Trade Center, being built at the site of the fallen twin towers, surpassed the Empire State Building on Monday as the tallest building in New York.
| May 1, 2012
Bruce E. Brooks Associates announces new commissioning subsidiary
Brooks + Wright Commissioning to be led by Will Wright.
| May 1, 2012
Gilbane to build $100 million cranberries manufacturing facility
Gilbane to provide design build services for a new Lean manufacturing facility for Ocean Spray Cranberries Inc., beverage products.
| May 1, 2012
Construction is underway on MLK ambulatory care center in L.A.
Featuring a variety of sustainable features, the new facility is designed to achieve LEED Gold Certification.
| Apr 30, 2012
Virginia Commonwealth unveils design for Arts Institution
Institute for Contemporary Art will serve as a catalyst for exhibitions, programs, research and collaboration.
| Apr 30, 2012
Summit Design + Build completes build-out for Office Concepts
The project is seeking LEED ID Silver certification from the U.S. Green Building Council.
| Apr 30, 2012
HSA Commercial selected as consultant for Orland Park’s Main Street Triangle project
HSA will be responsible for designing an overall mixed-use merchandise plan, attracting a unique retail tenant mix and completing leases with prospective tenants.