Conveyors naturally have fire hazard risks from the failure of its
components ie. jammed bearing and others. The carrying materials
have self ignition intrinsic charateristic as well said coal as an
example.
LINEAR HEAT SENSOR
The basic model for conveyor fire protection is fire detection. The most common sensor used in conveyor application is LINEAR HEAT SENSOR CABLE. With this type of detector, raising of temperature detection can be along the conveyor length. It is advisable to use the same brand for the linear heat sensor and the control panel. However if the panel brand is different, an interface module shall be employed in order to avoid mismatch impedance problem. Please be aware that most linear heat detector material has higher impedance than copper. Protectowire has several models ie. PIM-430D / PIM-530.
Protectowire Interface Module (PIM) has feature so called "location meter" to display the "hot" point for long distance sensor installation. Fire Alarm Control Unit is used for fire detection & notification, depends on the application, if just monitor you can use Fire Alarm Control Panel (FACP) ie. Mircom FX Series. If a deluge water spray system is applied as in Picture-1, Fire Release Control Unit (FRCU) shall be employed like Mircom FR-320 or FX-3500RCU or Protectowire Conventional Releasing Panel SRP - 4x4.
Other fire sensor technology with optical-based can be applied like Amber Detector. Amber Detector is suitable for coal fire spectrum as it is different with hydrocarbon fires. Special care shall be taken for application in dusty area. Do not forget to use lens cleaning equipment.
DELUGE
Deluge water spray system is used for fire extinguishing & sometimes to be used for coal dust cleaning as well. Deluge like RELIABLE model DDX offers simplicity in the maintenance and reliable as well. I've used this model in many projects with satisfactorily results. For the nozzle mostly "medium velocity" spray nozzles are common. There are many options for the K-Factor, spray angle and the material (bronze, stainless steel). For dust mitigation, spiral full-cone pattern nozzles ie. 3SAFE / BETE can give good performance.
CONCLUSION
Linear Heat Sensor for fire detection in conveyor systems and for active fire extinguishing system using water by using deluge system are common in protecting the conveyor structure. Please see below link to see typical conveyor fire protection : see video
LINEAR HEAT SENSOR
The basic model for conveyor fire protection is fire detection. The most common sensor used in conveyor application is LINEAR HEAT SENSOR CABLE. With this type of detector, raising of temperature detection can be along the conveyor length. It is advisable to use the same brand for the linear heat sensor and the control panel. However if the panel brand is different, an interface module shall be employed in order to avoid mismatch impedance problem. Please be aware that most linear heat detector material has higher impedance than copper. Protectowire has several models ie. PIM-430D / PIM-530.
Protectowire Interface Module (PIM) has feature so called "location meter" to display the "hot" point for long distance sensor installation. Fire Alarm Control Unit is used for fire detection & notification, depends on the application, if just monitor you can use Fire Alarm Control Panel (FACP) ie. Mircom FX Series. If a deluge water spray system is applied as in Picture-1, Fire Release Control Unit (FRCU) shall be employed like Mircom FR-320 or FX-3500RCU or Protectowire Conventional Releasing Panel SRP - 4x4.
Other fire sensor technology with optical-based can be applied like Amber Detector. Amber Detector is suitable for coal fire spectrum as it is different with hydrocarbon fires. Special care shall be taken for application in dusty area. Do not forget to use lens cleaning equipment.
DELUGE
Deluge water spray system is used for fire extinguishing & sometimes to be used for coal dust cleaning as well. Deluge like RELIABLE model DDX offers simplicity in the maintenance and reliable as well. I've used this model in many projects with satisfactorily results. For the nozzle mostly "medium velocity" spray nozzles are common. There are many options for the K-Factor, spray angle and the material (bronze, stainless steel). For dust mitigation, spiral full-cone pattern nozzles ie. 3SAFE / BETE can give good performance.
CONCLUSION
Linear Heat Sensor for fire detection in conveyor systems and for active fire extinguishing system using water by using deluge system are common in protecting the conveyor structure. Please see below link to see typical conveyor fire protection : see video
Picture - 01 :
Picture - 2 : Setting Protectowire Interface Module
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