C-DRONE GUIDE · 16 AUGUST 2026
Warehouse Racking Drone Inspection: the NF EN 15635 Standard, the PRSES's Role and Pricing
In a high-bay warehouse, steel racking is not simple storage furniture: it is a load-bearing structure, governed by the same safety logic as a piece of building framing, carrying several tonnes of goods above the aisles where forklifts and pedestrians move. Above ten, twenty, sometimes forty metres in automated systems, the highest levels sit beyond any reliable ground-level visual check. The NF EN 15635 standard sets out precisely how this racking must be inspected and requires an expert check at least once a year, organised by a dedicated person, the PRSES. On the highest aisles, a drone survey documents every level without tying up a forklift or interrupting order picking. Here is what the standard requires, what a drone adds to it, and 2026 prices.
Published on 16 August 2026, reviewed on 16 August 2026 — regulations in force as of August 2026.
A little-known standard, three mandatory inspection tiers
The main risk with steel racking does not come from ordinary wear but from impact: a forklift tine catching an upright, an off-centre load bending a beam, repeated knocks to a base plate that eventually work it loose. The European standard NF EN 15635 ("Steel static storage systems — Application and maintenance of storage equipment") sets out exactly how to manage this risk and defines three inspection tiers: an immediate check, carried out by any operator who spots damage and must report it without delay and unload the affected bay; a periodic check, a routine visual inspection carried out by a person trained in-house, at a frequency set according to how intensively the site is used; and an expert check, carried out at least once every twelve months by a qualified technician, most often an outside contractor.
The operator must appoint a person responsible for storage equipment safety — the PRSES — tasked with organising all three tiers, centralising reports and photographs, and tracking repairs. This duty sits within the broader framework of French labour law: Article L. 4121-1 requires the employer to take the measures necessary to ensure worker safety, and Article R. 4224-17 requires technical installations to be maintained and checked at an appropriate frequency, recorded in a maintenance file. CNAMTS recommendation R. 308, dedicated to warehouses, stores and storage areas, rounds out this framework by spelling out the prevention organisation expected on this type of site. Racking that is never inspected, or whose already-flagged defects go unaddressed, exposes the operator to direct liability in the event of a collapse — a risk that is far from theoretical: a single bay giving way can bring down dozens of metres of neighbouring racking in a domino effect.
What an aerial survey documents between two levels of racking
In an ordinary warehouse, the top levels of racking eight to twelve metres high are already hard to examine without an access platform; on an automated high-bay site, where aisles can rise twenty, thirty or forty metres, the periodic or expert inspection routinely calls for a reach truck or an aerial platform, which blocks the aisle and halts order picking for as long as it takes. A drone flown at a constant distance from the uprights flips that constraint: it photographs every base plate, every beam, every connector and every bracing diagonal along the full height, aisle by aisle, in a matter of minutes, without a single piece of handling equipment leaving its task — a flight that is readily scheduled during quiet hours, overnight or between picking waves.
Base plates, exposed to fork impacts and floor washing, account for a large share of the defects found: corrosion, cracked paint, loosened fixings, visible deformation. Next come bent uprights and bracing diagonals, missing or poorly seated beam-to-frame connectors, and load-capacity labels that have become illegible. Automated visual detection on this type of structure is advancing fast: in 2022, Hussain, Chen and Hill published in the Journal of Manufacturing and Materials Processing one of the first real-time damage-detection systems for pallet racking, built on a deep-learning model (MobileNetV2-SSD) mounted on a forklift, with a mean average precision of 92.7% (see the study on Google Scholar). That work illustrates a broader shift across the storage industry — replacing a forklift driver's quick glance with systematic, documented detection — which extends naturally to a drone for the levels no ground-mounted camera can approach closely.
This survey serves a different purpose from a drone warehouse inventory: where an inventory counts pallets and reads barcodes to reconcile physical stock against expected stock, a racking inspection documents the condition of the structure itself. Both missions share the same narrow-aisle navigation constraint, but pursue distinct goals — they are sometimes combined in a single flight to make the trip worthwhile.
The drone's role alongside the PRSES, not in their place
The survey replaces neither the judgement of the qualified technician carrying out the expert check, nor the hands-on inspection that serious doubt sometimes requires — checking an upright's verticality, measuring a beam's deflection under load, testing how well a floor anchor holds. The NF EN 15635 standard reserves these for physical contact, which a drone cannot perform remotely. Its role is different: giving the PRSES a dated, bay-by-bay record backed by photographs, used to organise the periodic inspection without tying up a forklift on every aisle, and to prioritise the points the expert should check rather than treating the whole site uniformly. Many inspection firms classify the defects found using a colour code — green for compliant, orange for closer monitoring, red for immediate unloading and repair before the bay is reloaded — a triage that the drone's photographic report feeds directly.
The flight itself takes place inside a closed, covered warehouse: it therefore falls outside European aviation regulations, just like the drone warehouse inventory or the tunnel and underground gallery inspection detailed in our guides — no open or specific category applies as long as the aircraft stays confined between the walls and the roof. Registering the drone on AlphaTango remains compulsory from 800 g upward, authorisation from the site operator is essential, and up-to-date professional liability insurance remains standard practice — the navigation itself relies on the same GPS-free visual tracking principles detailed in those two guides.
2026 pricing
Ranges observed in France in 2026 (excl. VAT):
- Standard warehouse (racking up to 10-12 m, a few hundred metres of aisles, periodic survey): €900 to €2,000.
- Large logistics platform (several kilometres of aisles combined, multiple levels): €2,000 to €5,000.
- Automated high-bay warehouse (AS/RS storage, 15 to 40 m, constrained navigation): €5,000 to €12,000.
- Periodic monitoring contract (integrated into the PRSES programme, quarterly or half-yearly frequency): tapering rate per visit, quoted case by case.
The delivered report pairs a warehouse plan with a status per bay, time-stamped and geolocated photos, and an export the PRSES can reuse for the safety register. This budget stays modest set against the cost of an unplanned shutdown following a collapse, or even against the simple cost of tying up a forklift and its operator for several days of manual inspection. This service draws on our structural drone inspection offer: request a quote stating the height of the racking, the length of aisles to cover, and the date of the last expert inspection.