Oil & Gas Coating & Repair Services

Refinery and gas-plant repair on turnaround schedules: corrosion under insulation, tube sheets, tank floors, and containment.

Overview

AAS in Oil & Gas

In a refinery or gas plant, the failures that shut a unit down are rarely exotic. Corrosion hides under insulation on hot lines until a leak shows up. Tube sheets and water boxes erode and bleed efficiency. Tank floors waste away from the underside where nobody can see them. Containment cracks under chemical exposure. The conventional answer is hot work. That means a permit, a stress-relief cycle, distortion, and a unit out of service long past the OEM lead time. AAS works the other way. We are factory-trained and factory-certified Belzona applicators. We do the hands-on surface prep, repair, coating, and lining in place, on the turnaround schedule you already published. The fixes cure cold, so there is no heat-affected zone and no re-stamping of code vessels. We bring decades on Louisiana units, a safety record that holds up to owner prequalification, and on-call emergency coverage. We are the crew Louisiana refiners, petrochemical producers, and marine operators call when the equipment has to go back in service on time.

AAS repair and protection work in Oil & Gas
Heat exchangers, pumps, and rotating equipment

Exchangers lose efficiency two ways. Dissimilar tube metals set up galvanic corrosion at the tube sheet and water box. That eats the steel around every tube end, and the bare metal then attracts more attack. We rebuild and electrically isolate the joint with ceramic-filled epoxies, prep the water box, and recoat it inside the turnaround window. No hot work near the bundle, and the unit returns to service in days rather than weeks. On pumps, erosion-corrosion and cavitation reshape the impeller vanes and casing profile until the pump falls off its head curve. We rebuild the vane geometry and casing wear areas cold, then lay down a smooth coating that restores the hydraulic profile. Efficiency comes back without rebalancing for weld heat.

Valves, shafts, and machinery housings get the same in-place treatment. We rebuild eroded valve bodies and bonnet faces, machine worn journals and keyways back to the specified diameter, and repair compressor and gearbox casings at the bearing bores and split lines. On flange faces, we reform the gasket-witness surface against the mating flange using a release agent. The repaired face mirrors the partner exactly, and the spool never leaves the line.

Piping, flanges, and live leaks

Bends, tees, and elbows wear first. The change of direction concentrates erosion and corrosion right where the flow turns. We line and wrap the contoured fitting with a composite that follows its geometry, so the spool does not get cut out and re-welded. For through-wall corrosion, external pitting, and mechanical damage on pressurized lines, we apply an engineered resin-and-fiber composite wrap while the line stays online. The work is qualified to the recognized composite-repair standards ISO 24817 and ASME PCC-2. The pipe recovers its design pressure rating without a replacement turnaround.

When a line is already weeping, we seal it live. The crew stops the active leak cold while the line stays pressurized, then overwraps for a permanent fix. Production keeps running with no hot-work permit and no product evacuation. Flange joints that corrode and weep at the gasket face get encapsulated in a cold-cure compound that seals the joint and protects the bolting, keeping the assembly free for future disassembly. That live-leak and emergency work is what the on-call line is for.

Tanks, vessels, and containment

Tank floors corrode from the underside. Rainwater wicks in at the steel-to-foundation chime and attacks the floor plate with every wet cycle. We seal that chime with a flexible cold-applied coating and reinforce the inside rim during the routine inspection window. Inside the tank, stored product thins the floor and the floor-to-shell weld where stagnant material settles. We apply a cold-cure lining as one continuous film over the prepared interior. There are no welds to recoat and no heat soak. Separators, knock-out drums, and process vessels that corrode at the water leg, welds, and access ports get the same in-place lining matched to their service.

Containment is the other half of the job. Bund walls spall from the inside out and open cold-joint cracks until they no longer hold their rated volume. We rebuild the spalled face, cap it with a barrier coating, and add a chemical-resistant overlay where the spill chemistry demands it. The facility holds the volume its SPCC plan requires without demolition and recast.

Hot service, corrosion under insulation, and outcomes

Corrosion under insulation is the failure this sector fights hardest. Wet insulation traps moisture against a hot wall, and inspectors only find the metal loss once it is severe. We brush a barrier coating onto the hot surface under the insulation while the line stays in service, and it protects the steel across the CUI temperature band. Where cladding leaks at seams, support legs, and penetrations, we seal the jacketing with a reinforced membrane and weather-side coating so water never reaches the pipe. Vessels and pipework that cannot be cooled or drained get coated in place with high-temperature linings that cure on the operating surface, so the asset keeps running.

Every one of these repairs is built around one outcome. The equipment goes back in service inside the outage you already scheduled. Cold-cure work means no permit-driven hot work, no re-stamping of code vessels, and no waiting on OEM lead times. The crew preps, repairs, and coats in the field and finishes the rest in our climate-controlled shop. For Louisiana refiners, petrochemical producers, and marine operators, that is downtime avoided and a turnaround that lands on its dates.

At a glance

How AAS approaches it

Cold-appliedNo hot work, no permits, no isolation in most cases.
In service, on turnaroundRepaired in place, on your outage schedule.
Machinable to specRebuilt and finished to the original tolerances.
24-hour on-callEmergency response for urgent failures.
Factory-trainedCertified Belzona applicators on every job.
Built for the serviceThe system is matched to the conditions it sees.
Common challenges

The failures we see in Oil & Gas

These are the recurring problems across oil & gas plants. AAS addresses each in place, on turnaround schedules.

Corrosion under insulation hides on hot lines until it leaks.
Tube sheets and water boxes erode and lose efficiency.
Tank floors corrode from the underside.
Containment areas crack under chemical exposure.
How we help

Capabilities used in Oil & Gas

The repair and protection work AAS performs most across this sector. Each links to the full capability.

Leak Sealing & Composite Pipe Repair

Live-leak sealing and engineered composite wrap repair of pipe and equipment, in service, without hot work.

  • Seal many leaks while the line stays in service.
  • Reinforce corroded and holed pipe with engineered composite wraps.
  • Avoid hot work, isolation, and the downtime they require.

Corrosion Protection & Coatings

Long-term barrier and immersion coatings for metal in corrosive, immersed, buried, and splash-zone service.

  • Protect metal in immersed, buried, and splash-zone service.
  • Coat complex geometries that are hard to protect by other means.

Metal Repair & Rebuilding

Worn, corroded, and damaged metal rebuilt to working dimensions in place, without replacement lead times.

  • Rebuild worn and corroded metal in place, without replacement lead times.
  • Restore equipment to working tolerances and efficiency.

Tank Linings, Process Vessels & Storage Tanks

Cold-applied internal and external linings for storage tanks, process vessels, and secondary containment, installed in place without hot work for chemical and immersion service.

  • Line storage tanks inside and out for corrosive and immersion service.
  • Reline process vessels, drums, digesters, and towers in place.

High-Temperature Coatings

In-situ external protection of hot pipework and equipment, including corrosion under insulation mitigation.

  • Coat hot pipework and equipment while it stays in service.
  • Mitigate corrosion under insulation on heated lines.
Applications

Work AAS performs here

Anti-seize and component release

Bolted and threaded assemblies on hot equipment seize together, so the next overhaul means cutting parts free instead of unfastening them.

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Anti-slip walkways and access surfaces

Worn aggregate, oil tracking, and process spills drop floors, stairs, and walkways below safe slip resistance and raise fall risk.

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Atmospheric corrosion protection

Airborne moisture, salts, and humidity corrode exposed equipment and new machinery before the original coating lasts a full service interval.

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Bund wall rebuild and lining

Bund walls spall from the inside out, exposing rebar and opening cold-joint cracks until the wall no longer holds its rated volume.

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Chemical storage tank linings

Stored chemicals attack tank floors and the floor-to-shell weld, thinning steel where stagnant product settles and the old lining has worn through.

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Composite repair of pipe bends, tees, and elbows

Bends, tees, and elbows wear fastest because flow turbulence concentrates erosion and corrosion at the change of direction.

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Compressor, engine and gearbox casing repair

Bearing-bore wear, split-line distortion and oil-leak paths at gasket faces retire compressor, engine and gearbox housings before the internals wear out.

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Corrosion under insulation prevention

Wet insulation traps moisture against hot pipe and vessel walls, driving hidden corrosion that inspectors only find once metal loss is severe.

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Crack and hole repair on casings and equipment

Welding on pressure separators and code-stamped vessels triggers re-stamping, stress relief and thermal distortion that can cost more than the defect.

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Cyclone and separator erosion protection

Swirling particle-laden gas inside cyclones and separators erodes the cone walls and vortex finders until plate thins and capture efficiency drops.

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Engineered composite pipe wrap repair

Through-wall corrosion, external pitting, and mechanical damage thin pressurized pipes and vessels before a replacement turnaround is scheduled.

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External pipework and tank corrosion protection

External corrosion attacks pipework, valves, fittings, and tank walls at supports, weld seams, and coating gaps until metal loss hits inspection limits.

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Flange encapsulation and sealing

Flange faces corrode and weep at the gasket joint, and exposed bolting seizes. This opens leak paths and makes future disassembly hard.

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General metal-loss rebuilding composites

Metal loss from corrosion, erosion or pitting retires equipment once it reaches a code-trigger thickness, and weld build-up adds heat distortion.

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Handrail anchor and fixture re-bonding

Corroded or pulled-out handrail anchors and loose fixtures create fall hazards on stairs, walkways, and platforms where the socket has rusted out.

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Heat exchanger, tube sheet and water box repair

Dissimilar tube metals set up galvanic corrosion at the tube sheet and water box, attacking the steel around each tube end and opening leak paths.

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High-temperature equipment lining

Equipment running well above ambient strips standard immersion linings, exposing bare steel to corrosion and process attack.

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Hot vessel and pipework in-situ coating

Tanks, vessels, and pipework running hot cannot be cooled or drained, so conventional linings that need an ambient substrate never get applied.

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Insulation jacketing and lagseal protection

Insulation cladding leaks at seams, support legs, and penetrations, letting water reach the pipe and hide active corrosion under the lagging.

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Live leak sealing

Active leaks at pipes, headers, and vessels waste product and corrode nearby steel before a shutdown can be scheduled.

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Low-friction pipe support liners

Pipes sliding across steel supports grind through coatings and trap moisture, driving corrosion and metal loss at every contact point.

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Machine base grouting and chocking

Voids, distortion, and gaps under machine feet and pump bases feed vibration and misalignment back into rotating equipment.

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Machinery shimming and equipment reseating

Steel shims leave point contact under machine feet, so load transfers unevenly and equipment drifts out of alignment under load.

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Oil and transformer leak sealing

Oil leaks at transformer tanks, gearbox cases, and weld seams persist because the oil film stops conventional adhesives from setting.

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On-site flange face and nozzle insert repair

Heat cycling, gasket-witness machining and dropped tools deform flange faces and corrode nozzle sleeves, so the line leaks and stays out of service.

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Pipe and tank leak sealing

Pinholes, through-wall defects, and corrosion pits open leak paths in pipe and tank walls, often on wet or oil-contaminated steel.

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Plain bearing, bushing and bearing-housing repair

Worn bearing bores, fretted bushing seats and vibration-loosened housings shift the rotating axis and shorten coupling and seal life.

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Process vessel and drum linings

Process vessels, knock-out drums, and clarifiers corrode at welds and access ports where the product chemistry thins the original liner.

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Pump impeller and casing rebuilding

Erosion-corrosion and cavitation reshape impeller vanes and casing profiles, pulling the pump off its head curve and cutting efficiency.

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Rotating equipment repair and efficiency restoration

Flow-induced metal loss exposes fresh steel that the process chemistry then attacks, dropping the efficiency of pumps, fans and turbines.

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Secondary and chemical containment lining

Porous concrete and cracked joints let spilled acid, alkali, or process product travel through the bund and reach surrounding soil.

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Separator vessel lining

Oil, gas, and water separators corrode at the water leg and internals where produced water and solids settle against the shell.

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Splash-zone, immersed, and underwater corrosion protection

Tidal wetting, full immersion, and underwater exposure corrode marine and offshore steel faster than topside surfaces, attacking piles and risers.

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Structural metal bonding and component casting

Welding to join or fabricate metal components introduces heat distortion, and catalog parts rarely match the dimension a worn assembly actually needs.

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Tank base sealing and water-ingress prevention

Water wicks in at the tank-to-foundation rim and attacks the floor plate from beneath, accelerating underside corrosion with every rain cycle.

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Valve body restoration

Body erosion at the flow path, seat-and-stem wear and gasket-face corrosion retire valves before the trim or actuator fails.

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Worn shaft, journal and keyway rebuilding

Keyway hammering, journal scoring and worn shaft seats leave the press-fit oversized and the journal undersized for its sleeve.

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24-hour on-call service

Have equipment that needs to stay in service?

Tell us what is failing. We respond quickly, and we offer 24-hour on-call service.

Call (225) 751-1930