A fixed gas detection system continuously monitors enclosed and semi-enclosed spaces for combustible gases, toxic gases, and oxygen deficiency. Unlike portable detectors carried by workers, fixed systems are permanently installed and connected to control systems that can trigger alarms, activate ventilation, or initiate automatic safety shutdowns when a threshold is exceeded. On offshore platforms and in onshore processing facilities, fixed gas detection is a regulatory requirement under CNLOPB regulations and applicable OHS legislation. K&D Pratt supplies fixed gas detection systems through Macurco and portable detection instruments through MSA Safety.