Airport and General-Aviation Refuelling Pavement Repair in NZ
- PotholeExpert
- 11 hours ago
- 5 min read
A refuelling apron at an aerodrome is the hardest piece of pavement you operate. It sits beside live jet fuel and avgas, it carries point loads from tankers and aircraft, and it has a tolerance the road network does not share: loose stones become foreign object debris an engine or a propeller can pick up. A ravelling apron is not cosmetic. It is a FOD source, a fuel-attack question and a hazardous-area job at once.
This page is for the aerodrome or general-aviation operator keeping the refuel apron and surrounding pavement sound, fuel-safe and serviceable inside the site hazardous-area plan and the permit-to-work system. The method discipline we apply on a petrol station forecourt carries straight onto airside pavement, with FOD as the added constraint.
Why ravelling on a refuel apron is a FOD problem
Ravelling is the loss of aggregate from the surface as the binder lets go of the stones. On a road it is a coarse, open texture. On a refuel apron it is loose chip sitting on a surface aircraft taxi over and engines run beside, and FOD near a running engine or a turning propeller is a risk you cannot tolerate the way a car park can.
So the trigger for repair on an apron is earlier than anywhere else: a surface still acceptable on a kerb-side car park can already be shedding enough material to warrant action airside. We treat the loose-stone count, not just the pothole, as the defect.
How jet fuel and avgas attack the pavement
A refuel apron has a problem ordinary pavement does not: fuel and oil land on it under the fill points and around the nozzles. Bitumen, the binder in standard asphalt, is itself a hydrocarbon, and jet fuel, avgas and lubricating oil soften and dissolve it over time. Under the nozzles and against the kerbs where spills collect, the binder lets go, the surface ravels, and the FOD problem starts. An apron carries three compounding causes of fast failure at once:
Fuel and oil dissolve the bitumen binder, concentrated under the nozzles and fill points.
Tanker and heavy point loads, plus aircraft turning, shear the mat and can strip it back toward the base.
Ponding saturates the base and drops its bearing strength, so the layer above flexes and breaks up.
Any figure you read for "binder loss in X hours" is indicative of the mechanism, not a number we treat as NZ-verified. What matters is that the apron under the fill points breaks down first, and patching it with ordinary asphalt feeds the same problem. That zone needs surfacing chosen for the exposure, and we identify which zones need it rather than over-specifying the lot.
The apron is a hazardous area, so the method follows the plan
The pavement around dispensers, fill points and tank vents is a classified hazardous area under AS/NZS IEC 60079.10.1:2022, the standard for classifying explosive gas atmospheres. It is divided into Zone 0, Zone 1 and Zone 2 by how likely a flammable atmosphere is, and the actual extents are recorded on the site hazardous-area plan, consistent with WorkSafe NZ guidance for sites handling flammable fuels.
We do not state a zone radius in metres here, and you should be wary of anyone who does: the extents are site-specific, set out in the standard and recorded on your plan, so the plan governs. Inside the classified zones, ignition sources are prohibited: open flame, sparks, hot surfaces and non-rated electrical gear. Standard asphalt practice routinely uses all of those, and that is what cannot simply roll onto a fuel-point apron.
Hot-mix outside the zone, spark-free methods inside it
Hot-mix asphalt runs at roughly 140 to 160 degrees Celsius, and the petrol-driven compaction plant that lays it is itself an ignition source. Neither belongs inside a classified zone without controls, so the method depends on where the defect sits relative to the plan:
Outside the classified zone, on taxi lanes, apron approaches and general pavement, conventional hot-mix applies: saw-cut the failed asphalt back to sound material, lay hot-mix in compacted layers, and seal the joint between new and old. Sealed joints keep water out of the base, which is the one reason a patch returns each winter.
Inside the classified zone, the choice is either a cold-mix or low-temperature, spark-free repair that introduces no ignition source, or a hot process run under isolation, with a hot-work permit and atmospheric gas testing confirming the lower explosive limit is at zero before work starts and throughout.
Cold-mix in the zone gets the apron safe, level and trafficable now, without a hot-works fight, and back in service the same shift, with the hot-mix relay reserved for areas where it is permitted. The same fixed-price logic that drives a permanent asphalt pothole repair still applies; we choose the method that fits the zone.
Staging the work airside without grounding the operation
An apron that closes stops the refuel, so we stage the work to keep the rest of the operation moving, mirroring the lane-by-lane method on a forecourt:
Isolate, bag and cone one fill point or one section of apron at a time, and keep the remaining points and pavement in service.
A spotter or traffic controller manages the interface between the work zone and live aircraft, vehicle and tanker movement.
Schedule around the tanker-delivery window so the work does not collide with a fuel drop.
Use cold-mix in-zone to return a section the same shift; run any hot-mix relay outside the zone, or overnight when movements are quiet.
Everything runs under a signed method statement inside the operator's permit-to-work system, agreed before anyone mobilises.
FOD discipline is non-negotiable airside, so we sweep and account for loose material as we go, not just at the end, so the work itself does not add debris to a live operation.
Your duties as a PCBU on the apron
Under the Health and Safety at Work Act 2015, the operator of the aerodrome or refuel facility is a PCBU with a primary duty over that pavement. The surface duty shows up on three fronts: slip and trip risk where the surface is wet and oily underfoot, vehicle and aircraft movement across the pavement, and the tanker hardstand where deliveries land. Alongside HSWA, the Hazardous Substances Regulations 2017 govern how the flammable fuel itself is managed, which is why the hazardous-area classification and permit controls exist.
A sound, drained, fuel-resistant apron with no loose chip is how you discharge the surface side of that duty. And because every repair comes with a dated, by-zone before-and-after photo report, you get a record of the hazard, the prepared edges and the finished surface that sits straight in your HSWA file as evidence the risk was managed.
Fixed price from a photo, and a record for the file
Photograph the defects, the ravelling under a fill point, the pothole on a taxi lane, the worn tanker hardstand, and send them with the site address and a note of your hazardous-area plan and permit requirements. You get a fixed price from the photo and a free condition report broken out by zone and method, so you can see which areas need the fuel-resistant, spark-free treatment and which can take conventional hot-mix outside the zone. There is no invented rate and no call-out fee for the quote, the method fits your plan, and the dated by-zone photo report doubles as a maintenance record and an HSWA compliance document. The same zone-aware, fixed-price approach is set out in our car park repair guide for property-side pavement.
Get a fixed quote for your refuel apron
Send a photo of the ravelling, potholes or worn pavement on your apron or taxi lanes. You get a fixed price from the photo, a free condition report by zone, methods that fit your hazardous-area plan and permit-to-work, FOD-aware airside staging so the operation keeps running, and the dated report for your HSWA file.
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