Explosion suppression systems use a light weighted modular design delivering quenching agents into a quickly developing fire suppressing it before they reach destructive proportions. A typical system contains a Power Supply Module, Unitized Sensor, a System Monitor and many Explosion Suppression “Cannons.”
The Explosion Suppression Cannon module pushes the extinguish agent into the explosion’s developing fireball. Since the developing explosion has a head start on the suppression system actuation, the system needs to be quickly actuated. Dynamic activation breaks up any dry chemical extinguishing agent’s compaction, and releases stored pressure delivering the agent at a swift rate. The agent function is heat extraction from developing fireball. The heat generated amount is a function of the fireball size, and the size grows quickly with time. This needs the Suppression System to react very quickly.
Process pressure is observed by the Unitized Sensor module which comprises three individual sensors and electronic logic triggering Cannon modules. If two of three sensors show an adequate pressure rise of an explosive nature, the logic circuit start delivering an activation signal for the Cannons. Programming is done for the individual sensors to actuate the system depending on a pre-determined pressure rise typical of any explosion, as disparate to gradual process pressure rises. The Unitized Sensors may be configured to permit for operation of the process at vacuum area.
The System Monitor provides essential safe power to the Cannons and Sensors. It interprets signals from Unitized Sensor and shows system status through devoted LEDs. For monitoring purposes and external signaling, this module has transmitted for remote signaling as well as process shutdown.
The Power Supply Module delivers 24 VDC for the system with 120 or 220/240 VAC line voltage input. Batteries inside the Power Supply Module are preserved on continuous charge and deliver power to the Explosion Suppression System if in case the input power is lost. With the Sensor modules and Cannon powered at essentially safe levels, ordinary conduit can be used running the wiring, eliminating the necessity for being expensive, explosion-proof hardware and its related installation cost.
The 4-component modular system has been designed just for the process equipment protection, also for safeguarding personnel who should install and maintain the intended safety system. Optional additional system lockout features ensure maintenance personnel the absence in unplanned or process triggering of the system whilst the maintenance works. The lockout has capability to attach a standard OSHA padlock device.
Once an explosion is successfully contained by Cannon modules discharge, they can be re-fitted onsite. Components needed for re-fit can be placed on-site without the necessity for special licensing for handling or storage. The original cannon and sensor modules can be restored, avoiding the necessity for a complete hardware exchange. This ability significantly will reduce the cost of ownership of explosion suppression system.