C-DRONE GUIDE · 4 AUGUST 2026
Hosting a drone mission on an industrial site: prevention plan, coactivity, checklist
The quote is signed, the pilot is qualified — one step remains, which clients often discover at the last minute: bringing a drone onto a working industrial site falls under the ordinary French rules for outside-contractor interventions. Joint prior inspection, prevention plan, work permits, coordination with production and other contractors: this HSE machinery, well-oiled for scaffolders and rope access teams, applies to drones with a few specifics (lithium batteries, radio link, overflight of installations). Well prepared, it takes half a day of exchanges; improvised, it loses the weather window or the shutdown slot. Here is the checklist for both sides.
Published on 4 August 2026, reviewed on 15 August 2026 — regulations in force as of August 2026.
Why a drone flight triggers a prevention plan
Whenever an outside company works inside an operating establishment, French labour law requires a joint analysis of interference risks between activities — coactivity. A written prevention plan is mandatory for dangerous work listed by ministerial order or above an annual volume of hours; in practice, large industrial sites require it systematically, whatever the duration. A drone mission adds its own risks: the machine falling onto installations or people, lithium batteries (transport, charging, storage), radio link interference with site equipment, distraction of ground operators.
This framing is not a French quirk: John Howard, Vladimir Murashov and Christine Branche of the US NIOSH (occupational safety institute) published the reference article on drones and worker safety in 2018 in the American Journal of Industrial Medicine, concluding that the benefits (less work at height) only materialise when the drone's integration into site safety procedures is formalised (see the study on Google Scholar). That is exactly what the prevention plan does.
The client's checklist
On the site side, preparing the intervention means:
- Organising the joint prior inspection (physical, or a documented video call for simple cases): site walk-through, identification of overflown and prohibited areas, take-off points.
- Mapping the day's coactivity: cranes and lifting equipment (jib parked or radio coordination — see our crane inspection guide), deliveries, roof work, other outside contractors.
- Issuing the permits the site rulebook requires: work permit, hot work permit where the site demands it for batteries, vehicle access authorisation.
- Identifying ATEX zones and the associated requirements — specific equipment and distances, detailed in our storage tank and flare stack guides.
- Scheduling the safety induction (real duration: 30 minutes to half a day depending on the site) and a contact person reachable during the flight.
- Informing internally: production, gatehouse, employees whose areas will be overflown — an unannounced drone generates calls and interruptions.
What the pilot brings to the file
A contractor at home in industry arrives with a file ready to append to the prevention plan: a flight risk analysis (trajectories, ground exclusion zones, link-loss and emergency landing procedures), aviation liability insurance certificates, pilot qualifications, a battery procedure (on-site charging or not, fire-resistant transport bags), and where relevant the site-specific safety credentials (GIES/N1-type inductions) that some chemical and petroleum platforms require of every contractor. Checking these documents is one of the criteria in our guide to choosing your drone pilot.
On sites where the alternative to the drone is rope access or scaffolding, this HSE file compares with the far heavier one for work at height — one of the economic arguments detailed in our drone or rope access comparison.
Impact on lead times and budget
On an ordinary industrial site, the full machinery — joint inspection, prevention plan, permits — absorbs into one to two weeks when started at order time; on SEVESO sites and platforms with specific credentials, allow three to six weeks, the time for access training if the contractor is not already inducted. On budget, HSE preparation typically represents half a day to a day of work on top of the flight: depending on the case it is included in the mission price or billed at 10 to 20% of the amount — serious quotes show it explicitly.
The useful reflex: send the site's contractor rulebook and the HSE contact's name with the initial enquiry. That is the data that allows accurate pricing and pins the mission to the right window — technical shutdown, weekend, production lull. Request a quote attaching these elements: the proposed schedule will be all the more reliable.