Very knowledgeable speakers – incredibly intelligent!” -Pete Fletty, Marshfield Fire and Rescue Department, Marshfield, Wisconsin I plan on budgeting for these courses in the future. The knowledge gained in this class will help me understand plans and provide a knowledge base of how and why in the field.” He then went on the write “Wonderful course – very happy I was able to attend. Markers have worn out or been dislodged Insects have infested a hydrant.“As an AHJ/inspector, it is valuable to have a general idea of sprinkler and alarm system design. Hydrants have been relocated due to building construction. Grass or vegetation has grown over the hydrant cover.ĭirt, earth or rubbish has been piled over a hydrant. Hydrants may be hidden or unuseable when This is not only frustrating for firefighters but it can lead to serious consequences in delaying operations.Ī much greater awareness of the importance of hydrants in the community is needed so people will ensure hydrants near them are useable. Often firefighters find that hydrants are hidden or not maintained and cannot be used at a fire emergency. Accessing a hydrant without delay ensures that firefighters who are already inside a burning building tasked with search and rescue or attacking the fire can continue for as long as required. In every fire emergency, getting a hydrant to work is one of a firefighters’ priorities. In the first minutes of a fire emergency a continuous water supply from the water mains must be accessed through at a hydrant. A fire truck carries only enough water to make an initial fire attack. The use of pressurized air or nitrogen in the piping system allows for the easy detection of leaks.įire services use the hydrant for a continuous flow of water which is vital to firefighting operations. The two-event discharge requirement adds an elevated level of protection from such inadvertent discharges. Accidental activation often results in costly, irreversible property and water damage. It’s not uncommon for sprinkler heads to be falsely triggered. Pre-action systems offer several advantages. Now that water is on deck, one or more individual sprinkler heads need to release to engage and discharge water. Upon alert, the pre-action valve releases, water flows in, and the system essentially becomes a wet pipe system.Ģ. The pre-action valve will only activate when an independent fire detection system detects a fire. This system requires two events to happen before any sprinklers discharge:ġ. Pre-action pipes start out as dry pipes they hold water back using an electronic “pre-action" valve. Pre-action fire sprinklers fall right in between all of these. Fire suppression systems fall into three fundamental categories: wet pipe, dry pipe, and deluge.
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