OGMP 2.0 & ATEX-Aware

Drone Gas Detection Surveys.

Fly over, not into — methane, H₂S, and CO₂ leak mapping at chimneys, landfills, and oil & gas facilities without putting a human in the hazard zone.

“Every drone pilot on this network is personally vetted by me — insurance, qualifications, flight history.”

Peter Leslie · Founder & GVC Drone Pilot

Trusted by site managers & agencies across the UK

Need a gas survey?

Post your details to compare quotes from gas-detection specialists.

Fixed sensors miss fugitive emissions — and humans shouldn't be the backup.

HSE leads, landfill drone operators, and ESG officers face rising reporting pressure with aging infrastructure and no safe way to confirm a leak is patched.

OGMP 2.0 Reporting Pressure

Drone operators signed up to the Oil & Gas Methane Partnership 2.0 must move from Level 3 estimates to Level 4/5 measured emissions. Drone TDLAS surveys deliver the site-specific quantification inventories increasingly depend on.

Confined Space & ATEX Risk

Rope-access and MEWP inspections of chimneys, flare tips, and AD headspaces put personnel into explosive atmospheres and confined spaces. A drone removes the human from the hazard while returning better data at closer range.

Fixed Sensors Miss Fugitives

Stationary gas detectors catch only what drifts into them. Landfill cap breaches, flange leaks, and compressor-seal releases often sit metres away from the nearest fixed sensor. Drone TDLAS surveys catalogue the whole site in a single flight.

TDLAS, OGI, and ATEX-compliant rigs — picked right.

By Peter Leslie, Founder & GVC Drone Pilot

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Tunable Diode Laser Absorption Spectroscopy (Pergam LMm, SeekOps SeekIR) returns a quantitative ppm-m methane column density — the right tool for OGMP quantification. Optical Gas Imaging (FLIR GF320 or G620a) visualises the plume but doesn't quantify. They answer different questions.

Chimney tops, flare stacks, and parts of O&G facilities sit in ATEX Zone 1 or Zone 2 atmospheres. Standard consumer drones are not intrinsically safe. Only drone operators running certified rigs under a permit-to-work system should be anywhere near those environments.

Every gas-detection drone pilot on this network carries the correct payload for the target gas, the right ATEX documentation for the zone, and the quantification methodology needed for OGMP 2.0 Level 4/5 reporting.

ATEX-Aware Specialists

TDLAS & OGI Certified

Reports that satisfy HSE, EA, and ESG auditors.

Our network operators deliver site-wide leak inventories aligned with OGMP 2.0 reporting levels.

Concentration Heat-Maps

Geo-referenced methane concentration surfaces derived from TDLAS column measurements, exported as GeoTIFF and KML. Operations teams can instantly see emission hotspots overlaid on facility layouts.

GPS-Tagged Leak Log

Every identified leak pinned, numbered, photographed, and classified by severity with GPS coordinates and measured concentration. Designed for direct ingest into asset-integrity and repair-prioritisation workflows.

OGMP 2.0 Reports

Level 4/5 compliant reporting packages — site-specific, measurement-based emission estimates with methodology, uncertainty, and reconciliation against Level 3 inventory values. Ready for UNEP submission.

Book your gas survey in 3 steps.

We route your brief to TDLAS and OGI specialists with the right ATEX posture.

Describe the Facility

Tell us the facility type, target gas, ATEX zoning if relevant, and the audience — HSE internal, OGMP reporting, EA enforcement, insurer.

Compare Gas Specialists

We route your brief to drone operators with TDLAS, OGI, or both, and the ATEX documentation for your zone. Receive quotes with payload, methodology, and deliverable specs.

Survey & Report

Your drone pilot coordinates permit-to-work, flies the survey, quantifies the leaks, and delivers heat-maps, leak logs, and OGMP-aligned reports by secure cloud link.

Start Your Project Brief

Trusted on live O&G, landfill, and ESG-critical sites.

See how HSE leads, landfill drone operators, and ESG teams use drone gas detection through our network.

"We had repeat small fugitive losses on an offshore-terminal flange bank and no safe way to confirm the repairs. The TDLAS drone team closed out 14 leak suspects in a single shift and gave us the OGMP Level 4 evidence trail."

Rob McAllister

HSE Compliance Lead, North Sea O&G, Aberdeen

"Cap breaches on a 28 ha landfill would have taken our walk-over team a week to cover. The drone heat-map pinpointed every active vent within hours and gave us a repair register we could prioritise straight away."

Nadia Begum

Landfill Operations Manager, Leeds

"Moving our disclosure from Level 3 to Level 4 under OGMP was a pain. The measured-emissions package the drone team returned closed the gap in our inventory and passed external assurance first time."

Tomás Quinn

ESG Reporting Lead, Bristol

Gas Detection FAQ

Technical answers on TDLAS vs OGI, ATEX zoning, and OGMP 2.0.

TDLAS vs OGI — which should I choose?

TDLAS returns a quantitative ppm-m column density — the right answer when you need to quantify the leak for OGMP reporting or emissions inventories. OGI (thermal infrared) visualises the plume in real time, which makes it ideal for rapid screening and pinpointing source locations, but it does not quantify. Many drone operators fly both for exactly this reason.

What are the LFL thresholds and how does the drone handle them?

Methane lower flammability limit is around 5% by volume in air. Flight plans maintain a safe standoff that keeps the airframe well below 10% LFL in the plume, while the sensor standoff range (several metres for TDLAS) still returns a useful measurement. Exclusion distances are set per payload and documented in the risk assessment.

Can you fly in ATEX Zone 1/2 areas?

Network operators maintain intrinsically safe or Zone 2-compatible platforms where the client asset requires it, operating under permit-to-work with the site safety case. We do not deploy standard consumer drones into ATEX zones — where the asset is zoned, we match the drone pilot to the certification.

Will the report satisfy OGMP 2.0 Level 4/5 reporting?

Yes — TDLAS-derived quantification with documented uncertainty, site-level reconciliation, and methodology notes meets the Level 4 measurement requirement. Level 5 (source-level) reporting is also supported where the survey design specifies source-resolved quantification. The deliverable packages mirror the UNEP OGMP reporting template.