Gas Detection Systems – The Risk-Based Approach and Maintenance as a Safety Service

Gas detection systems are critical safety services for managing risks associated with hazardous gases in industrial environments, particularly where hydrogen and other flammable substances are present. Hydrogen introduces specific challenges due to its high diffusivity, low ignition energy, and broad flammability range. This presentation outlines a risk-based methodology for the implementation and management of gas detection systems as independent protection layers within the broader functional safety lifecycle. It emphasises the need for robust system design, functional safety integration, and proactive maintenance, supported by a structured management of change process. Key considerations will include detector placement, degradation mechanisms, and proof testing requirements. The presentation reinforces that gas detection systems must be treated as active, performance-based safety functions and maintained to ensure continued risk reduction throughout their operational lifecycle.