Examination of sprinkler and drencher system
The sprinkler system is a stable automatic system for reporting and extinguishing fires. The system is activated when the temperature rises to certain values in places where sprinkler nozzles are located, which open at that temperature and eject water onto the protected object or zone. The principle of operation is based on the pressure drop in the pipeline, which occurs due to the opening of the sprinkler nozzle (when the glass ampoule of the nozzle filled with a special liquid breaks or, in older models, the soluble element melts). At that moment, the sprinkler valve opens, where there is a pressure difference in front of and behind the valve. By opening the valve, pressurized water flows through the nozzles that have opened. Depending on the design and mode of operation, sprinkler systems can be wet, dry, dry fast-acting, combined and with a pre-alarm.
The drencher system is a stable fire extinguishing system in which open nozzles are placed on a pipeline that is connected to a water source via an alarm valve.
The correctness of the stable fire extinguishing system must be periodically checked at least once a year.