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Gas Detection Systems Suppliers
Gas leaks and unsafe atmospheres are a known risk on board. If they are not detected early, they can lead to unplanned stoppages, cargo delays, equipment damage or even serious injury. Fixed and portable gas detection form an important layer in preventing these situations. For shipowners, managers and shipyards, the priority is to work with gas detection systems suppliers who can deliver reliable, marine-approved solutions that match the vessel’s spaces and operating profile.
Gas Detection Systems Overview and Key Requirements
Most ships use a mix of fixed and portable gas detection.
Fixed systems are installed permanently in high-risk areas - machinery spaces, fuel treatment rooms, pump rooms, car decks, gas-fuelled engine spaces, battery rooms or refrigerant machinery rooms. Detector heads feed signals back to a central panel or safety PLC, which triggers alarms and, in some cases, automatic actions such as fuel shut-off or ventilation changes.
Portable detectors are used by crew for enclosed-space entry, hot-work permits and local leak checks. Multi-gas units typically measure oxygen, flammable gas (as %LEL) and common toxics such as CO and H₂S, with clear visual, audible and vibration alarms.
Across both types, the main requirements are:
- Coverage of the right gases. The system must detect the gases actually present on board - for example hydrocarbons and VOCs on tankers, refrigerants in machinery rooms, or methane on gas-fuelled ships - with appropriate measurement ranges and alarm points.
- Suitable technologies. Gas detection systems manufacturers use catalytic, infrared and electrochemical sensors depending on the gas, location and whether spaces can be inerted. Choice of technology affects accuracy, response time and maintenance.
- Correct placement and approvals. Detector heads must be positioned with gas density, ventilation and ignition sources in mind, and equipment should carry relevant marine and hazardous area approvals where required.
- Calibration and sensor life. Sensors need regular tests and calibration with the correct span gas, plus planned replacement at end of life. Clear procedures in the vessel’s SMS, supported by good documentation from the supplier, are essential.
Well-designed systems treat gas detection as part of a wider safety chain, integrated with fire detection, automation and emergency shutdown.
Protecting Vessel, Cargo, and Crew with Records Marine
On this page, Records Marine helps technical teams connect with gas detection systems distributors who understand marine conditions and class expectations. You can filter companies and then review their profiles and service capabilities before opening direct discussions.
When you review potential partners, it is helpful to look at:
- System scope and vessel experience - whether they supply both fixed and portable equipment, and whether they have references for ships similar to yours (cargo, tanker, gas carrier, offshore, passenger).
- Integration and support - ability to interface with your existing alarm, automation and shutdown systems, and to provide commissioning, calibration support and crew training.
- Spare parts and lifecycle service - availability of sensors, controllers and calibration equipment over the expected life of the installation, plus clear procedures and documentation.
Used in this way, Records Marine becomes a practical tool for building a focused shortlist of gas detection systems companies who can help protect the vessel, its cargo and its crew through modern gas monitoring across all critical spaces.
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