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Orland Park Public Works News

Posted on: May 28, 2014

Fire Hydrant Flushing

Hydrant Flushing

In the course of water distribution system maintenance, fire hydrant flushing has become a useful tool in determining flow conditions in the water mains. The water utility will be using a method called fire flow testing. This is where fire hydrants are opened and flushed, pressure and flow data collected, and calculations made to determine “potential fire flow” at that particular point in the water main. Insurance underwriters use the results of fire-flow tests extensively as a factor in setting rates for insurance premiums for municipalities. The flow test results are used by designers of fire sprinkler systems, and by the fire department to determine the rate of flow available at various locations throughout the distribution system for fire protection. The results of testing can determine if a building will need a fire pump to be able to get water to a fire inside a structure or whether the distribution system water pressure can provide the needed flow for proper fire protection. In addition, any fire hydrants that need maintenance work will be identified and then corrected by village staff.

The village along with M.E. Simpson Co. Inc. will be conducting hydrant flow testing as part of our regular water distribution system maintenance. The testing will be conducted from 8:00 AM through 4:30 PM during the weeks of May 1, 2014– June 30, 2014, weather permitting. The program may be restarted in the fall approximately mid-September. Please watch for large street signs that will inform the immediate area of the day that area may be affected by the flow testing. The flow testing may cause a temporary discoloration of the water in the area. The water is safe for drinking but may discolor clothes washed in it. If discoloration occurs, please flush your inside water system by running fixtures, including the washing machine, until the water clears. Start by running water from fixtures that are the closest to the water meter and then moving on to the next fixture.

We regret any inconvenience these tests may cause and thank you for your patience and cooperation. If you have any questions, please call our consultant toll free at (888) 252-1521.

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