Explosion detector: Device or arrangement of apparatus, containing one or more explosion sensors, that responds to
a developing explosion by providing an explosion detection signal.
Response time: The time necessary for actuation of the system after a detection of an explosion.
Active Explosion Isolation System: A system which is designed to be activated by a sensor/or a control and indicating
equipment (CIE) and stop explosions from travelling through pipelines or limit destructive effects of the explosion.
Actuator: Initiating device, typically a gas generator (Valve Actuator Assembly – GCA).
Control and indicating Equipment (CIE): Equipment which records and monitors the signals transmitted by explosion
pressure sensors / detectors spark and flame, temperature and other safety sensors. Depending on configuration, by
interrogation and interpretation of the detector / sensor data the CIE selectively controls the actuation of Suppressors,
extinguishing barriers, fast closing isolation valves, process equipment shut down, water spray or extinguishing
release, and all audible and visual alarms. The CIE must be constructed according to special specifications.
Explosion Protection System Controller (EPSC): Fike equivalent name for CIE.
Armed: the EPSC is active and will process a detection signal.
Disarmed: the EPSC is inactive and will not process a detection signal.
Shutdown: Disarm action followed by the discharging of the capacitors of a CIE/EPSC. Consequently, the power to fire
the actuator is no longer present. Therefore, shutdown is safer than DISARM. Shutdown must be used during
maintenance to an area of plant, where people can enter the protected volume. Shutdown also guarantees a safe
state of the circuitry for the operator or technician for maintenance or measurements.
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The sections marked with this icon require specialist assistance.
ONLY CERTIFIED FIELD SERVICE ENGINEERS SHALL PERFORM THE ACTIONS DESCRIBED IN THESE MARKED SECTIONS.
Service Qualifications
The information contained in this document is provided for reference purposes only. For further product information
or ordering replacement parts, please contact your local Fike Branch Office or Representative (details of which can be
found on the back page) or Fike Product Support by calling 816-229-3405 (fax: 816-229-0314) or Fike Europe Product
Support at +32 14 21 00 31 (fax: +32 14 21 07 43).
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