PRESSURE REGULATING DEVICES. By: Sgt. Larry Baker FF/Medic Len Clowser FF/EMT Terry Orndorff. OBJECTIVES. Understand how Pressure Regulating Devices (PRDs) work Overcome the limitations of PRDs. Identify structures in the City of Winchester with PRDs. Automatic Sprinkler Systems.
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By: Sgt. Larry Baker
FF/Medic Len Clowser
FF/EMT Terry Orndorff
Because of this tragedy at One Meridian Plaza, PRD’s received a lot of attention. The fire service recognized these devices as a potentially serious problem!
If the static pressure at a standpipe connection exceeds 175 psi, according to NFPA 13/14, the pressure needs to be reduced to a maximum of 100 psi
2 ½” line with a smooth bore nozzle
Now that we know these devices are in place and the tragedy they can cause when we are not aware of their existence, lets continually keep our eyes open and inform others and take the appropriate action if PRDs are located.