Explosion Suppression System Components
“Critical Components of an Explosion Suppression System”
HRD Suppression, PistonFire II suppression bottle, and eSuppressor
Explosion Suppressor Bottles
Suppressor bottles are a key component of an active Explosion Suppression System (ESS) used in various industrial processes, in conjunction with pressure detectors. The size, position, and quantity of bottles are important considerations for an ESS designer. Suppressor bottles are high-rate discharge extinguishers used for explosion suppression and chemical isolation systems. They are spherical or cylindrical shaped refillable containers constructed of a high-strength steel alloy fabricated to withstand 900 psi pressure and are pre-loaded with sodium bicarbonate. In an explosion suppression process, a control panel is typically used to activate the suppressor bottles. The control panel is active at all times, and it directly receives signals from the sensors present in the pressure detectors.
Upon receiving a positive signal for an explosion, the control panel electromechanically activates the suppressor bottles; this type of suppressor does not require a pyrotechnic actuator. Suppression bottles can be installed on vessels or ductwork both indoors and outdoors.
Explosion Control Panels
In an explosion suppression system (ESS), the control panel processes information sent by pressure detectors and activates explosion suppressor bottles and alarms. Control panels typically include the following features: microprocessor, self-check system, remote arm/ disarm, front panel window, output signals alarms, power supply, and battery backup.
The control unit tests and confirms the signal coming from the sensor. Based on its signal processing, the unit determines the severity of the signal. The microprocessors are designed to enable self-checking routines for verification and control panels regularly perform these routines during startup and operation. The monitoring features of controls enable timely detection of short circuits, wire breaks, pressure buildup, etc. Linking these alarm signals to the main process control panel can ensure shut down of the system and prevent escalation of the explosion.
EX200 Control Panel for IEP Suppression System
Control Panel System Startup
IEP TECHNOLOGIES SMART Detection System using Mex and FAB.
Explosion Detectors
Explosion detectors are placed directly on the vessel or ductwork and monitor pressure fluctuations that would develop during an explosion event. Pressure detectors are an important part of many Explosions Suppression Systems (ESS). As part of an ESS, the detector monitors the process in real-time. Pressure detectors typically consist of a pair of sensors. There are several types of pressure detectors. The suitable type depends on the stability of the process, the type of combustible particles, etc. Some common types of detectors include dynamic rate of rise detectors, static detectors, and UV/IR detectors.