Fire Hydrant 09
Fire Hydrant 09 : Inspection and Maintenance: Hydrant extensions are also available for raising a hydrant if the grade around the hydrant changes. Without extending the height, the wrenches to remove caps would not clear and the break flanges for traffic models would not be located correctly in case they were hit. Hydrant repair kits are also available to repair sacrificial parts designed to break when hit by a vehicle. Many departments use the hydrants for flushing out water line sediments. When doing so, they often use a hydrant diffuser, a device that diffuses the water so that it does not damage property and is less dangerous to bystanders than a solid stream. Some diffusers also dechlorinate the water to avoid ground contamination. Hydrant flushing can send large quantities of dead microorganisms, living microorganisms, and even Myxobacteria spores depending on the location directly into the homes of citizens, and commercial establishments (restaurants, grocery stores), and with no effective method of prevention. (Ultimately this part of the article is meant to be part of a Criticism subsection that does not exist) It is a double-edged sword to have powerful protection against fire but to routinely contaminate citizen and commercial plumbing. Citizens are informed that hydrant flushing releases "primarily harmless silt" to reduce panic and complaints. Hydrants are also sometimes used as entry or exit points for pipe cleaning pigs
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