Gas Detection System
Gas Detection System is installed with the aim of providing continuous, area and personnel protection around the clock. The Gas Detectors are designed to alert crew of the potential danger of poisoning by toxic gas exposure, asphyxiation due to lack of oxygen or explosion caused by combustible gases.
It is an alarm system designed and built for measurement of oxygen content in rooms where changes of the oxygen concentration (e.g. Inert Gas Room) are possible, and can accurately measure the concentration of it with a range of 0-25% Vol, ensuring maximum safety.
Gas Detection System equipment is comprehensive and well proven. The Gas Detection Sensors fulfil Ex-proof requirements for the intended operating area and come with manufacturer’s operating instructions and recommended spares. The oxygen concentration is sampled by two (can be extended to up to eight) fixed oxygen sensors situated in the area to be monitored. The FGDS consists of one cabinet including all electronic equipment, alarm relay outputs, terminals for O2 sensor connections along with system’s indication lights/buttons/system buzzer and the operator’s LCD panel in the front side (removable for console mount).
The system cabinet is located in safe area, typically in the cargo control room. Intrinsically Safe box is available as part of the system and can be delivered depending on system requirements. Power and other system failures are indicated on designated alarm LED’s. Each channel has adjustable alarm set points with designated alarm LED’s for each one. The system is fitted with potential free change-over output relays for power failure, common gas alarms and for system failures.
MSC 367(93) / Fire Safety Systems FSS Code Ch 15 220.127.116.11.4
Two oxygen sensors shall be positioned at appropriate locations in the space or spaces containing the inert gas system. If the oxygen level falls below 19%, these sensors shall trigger alarms, which shall be both visible and audible inside and outside the space or spaces and shall be placed in such a position that they are immediately received by responsible members of the crew.