Risk Detection

How PLCs Help to Avoid Hazards and Increase Plant Safety

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Offshore Fire and Gas Protection

The fire and gas detectors are located in the process area as well as the building blocks, so that in case of any possibility of gas leak or fire, the fire suppression systems act immediately. The application demands highly accurate control systems to take immediate action. These systems should also be failproof, so that breakdown of any component of the control system should not affect the timely action of emergency shutdown systems.

The operator should be intimated of a hazardous condition well in advance, so that operating personnel could vacate the area, which otherwise could harm life and property. The fail-safe PLC system enables this through on-line replacement of faulty modules. Faults in individual modules, field wiring and sensors are managed automatically through built-in diagnostics. Analog fire and gas detectors are connected directly to the controller, eliminating the need for trip amplifiers.


Traditional fire and gas panels can be replaced with a single integrated system, saving space while maintaining high levels of safety and reliability. To sum up, employing fail-safe PLC systems in critical applications is the need of the hour to avert risks to mankind and environment.

* First published in PROCESS India June 2014