Gas Detection Unit (GDU) Inspections
The Importance of Inspection, Testing, and Calibration
In environments where flammable or toxic gases are present, reliable gas detection units are vital for the safety of your workforce. GDU Inspection, Testing, and Calibration ensure that these units’ function accurately, providing early warnings and preventing potential disasters.

Comprehensive GDU Services
- Thorough Inspection: Our expert inspectors evaluate the physical condition of your GDUs, checking for visible defects and potential issues.
- Functional Testing: We conduct rigorous functional tests to ensure that your GDUs respond accurately to simulated gas releases.
- Calibration: Our precise calibration procedures fine-tune your GDUs, ensuring their readings align with known gas concentrations (available on site / at point of use, no need to send GDU unit away for testing and calibration).
- Certification and Compliance: Our services adhere to relevant regulations, providing you with the certification needed for legal compliance.
Why Choose Us for Your GDU Inspections
At Compliancy Group, safety is our priority. Our GDU Inspection, Testing, and Calibration services ensure your workplace remains free from gas-related risks. With meticulous inspections, accurate testing, and comprehensive reports, we empower you to protect your employees and assets. Choose us for reliable GDU services that put safety at the forefront of your operations. What we offer in return;
- Expertise: Our experienced technicians possess in-depth knowledge of gas detection systems, ensuring accurate inspections and calibrations.
- Precision: We follow strict testing protocols and calibration procedures to guarantee the accuracy of your GDUs.
- Comprehensive Reporting: Our detailed reports provide insights into the condition of your GDUs, calibration results, and recommendations.
- Educational Support: We offer guidance on maintaining your GDUs’ optimal performance, empowering you to prioritise safety.
Benefits of Our Services

Safety Assurance
Reliable GDUs are critical for preventing gas-related accidents and protecting the lives of your employees.

Legal Compliance
By adhering to regulations, you demonstrate your commitment to safety and prevent legal consequences.

Cost Savings
Early detection and accurate readings prevent costly workplace accidents, repairs, and downtime.

Peace of Mind
With our expert services, you can be confident that your GDUs are providing accurate and timely warnings.
Frequently Asked Questions
What does a GDU test for?
A GDU (Gas Detection Unit) tests for the presence of specific gases in an environment. The exact gases it detects will depend on the sensors installed in the unit.
What gases does a GDU detect?
Typically, GDUs can detect gases such as carbon monoxide (CO), hydrogen sulphide (H2S), oxygen (O2) levels, methane (CH4), and other flammable gases. However, the specific gases a unit can detect depend on its design and the sensors it has.
What are the safety requirements for gas detection?
Safety requirements for gas detection usually include:
- Regular calibration and maintenance of the devices.
- Training for personnel in the use of the devices and in response protocols for when gas is detected.
- Proper placement and coverage in areas where gas presence is a concern.
- Alarm systems that are clearly audible or visible.
- Regular testing and inspection of the unit to ensure functionality.
What is the British standard for gas detection?
In the UK, the primary standard for portable gas detectors is BS EN 60079-29-1:2016, which relates to detectors for flammable gases. There are other standards as well, targeting different types of gases and specific applications.
How long does a gas inspection take?
The duration of a gas inspection depends on the number of appliances and the complexity of the system. However, on average, a gas safety check for a typical home with a few appliances might take between 30 minutes to an hour.
What is a gas quality inspection?
A gas quality inspection refers to the process of examining and analysing the quality and composition of a gas sample. This can be to ensure that it meets specific standards or to ascertain its purity, energy content, and other characteristics.
How often do you need a gas safety check UK?
In the UK, landlords are legally required to get a gas safety check on all gas appliances, fittings, and flues provided for tenants’ use every 12 months. They must also provide the tenants with a copy of the gas safety certificate within 28 days of the check.
How much is a gas inspection UK?
The cost of a gas inspection, often referred to as a gas safety check or certificate, can vary depending on the location, the number of appliances to be checked, and the company or engineer performing the check. As of my last update in January 2022, prices typically range from £50 to £100, but it’s always best to get multiple quotes to get an accurate estimate.
What happens during a gas inspection?
During a gas inspection, a Gas Safe registered engineer will:
- Check the gas appliance for gas tightness.
- Examine the appliance for satisfactory ventilation.
- Check the burner pressure and gas rate against the manufacturer’s guidelines.
- Inspect for the safe operation of the device’s controls.
- Ensure flues and chimneys are clear and safe.
- Check for any signs of unsafe operation, like yellow or lazy flames or black marks.