What builds up, and why it matters
On this kind of work the problem is oil, carbon, scale and hydrocarbon residue on generation and process equipment. Energy equipment is large, awkward to access and costly to take out of service, so cleaning in place during an outage is worth far more than a faster method that requires teardown.
Work is planned around outages and turnaround schedules. The people who call us about wind turbine are usually operations and maintenance planners, and the thing they are actually worried about is extending an outage that was already tightly planned.
The method
Why dry ice and not the alternatives
- Non-abrasive
The pellet is soft and sublimates on impact, so the work is thermal rather than mechanical. Machined faces, plating, paint and gaskets survive it.
- Low moisture
No standing water in a harness, a bearing or a cabinet, and no dry time before the equipment goes back into service.
- No secondary waste
Sand, soda and walnut shell all have to be swept and hauled. Dry ice leaves only the contaminant it removed.
- Often no teardown
Much of this work is done in place, which is usually where the real saving is. The labor is in the disassembly, not the cleaning.
More energy work
Related jobs we get called for
Questions we get asked first
Will it damage the surface underneath?
On most substrates, no. The pellet is soft and sublimates on impact, so it does thermal work rather than mechanical work. We still test an inconspicuous spot first on anything unusual.
Do you have to take the equipment apart for wind turbine?
Usually far less than you would expect, and often not at all. Cleaning in place is where most of the saving comes from, because the labor is normally in the teardown and reassembly.
How much mess does it make?
Far less than the alternatives, because the blasting media disappears. What is left is the contaminant itself, which we contain and clean up.
Do you come to us?
Yes. The whole rig is mobile. Compressor, hose and operator arrive at your shop, plant, driveway or dock, anywhere across South Florida from Miami out to roughly a hundred miles.
What does a job cost?
It depends on the equipment, the contaminant and the access, so we will not throw a number at you over the phone without understanding the work. Describe the job and we will give you a real figure.
How soon can you look at it?
Send photos and a short description and one of the owners gets back to you. If you have a shutdown or a deadline, say so up front and we will tell you honestly whether we can hit it.
The comparison
Why not just pressure wash it
- Media blasting
Abrasive by definition. Anything with a tolerance or a finish worth keeping comes out changed.
- Pressure washing
Water gets into everything and has to come out again before the equipment runs. Around electrics it is off the table entirely.
- Solvent and degreaser
It loosens the mess and leaves its own behind, along with fumes and something to dispose of.
- Hand scraping
Hours of work for an inconsistent result, with gouges where the blade slipped.
- Dry ice
The pellet is soft and the mechanism is temperature, not abrasion. It turns to gas on impact, so the only thing left to sweep up is what came off.
What comes off
The deposits we see most
Most calls involve one of the following. The common factor is a bond between two things that should not be bonded.
- Grease and oil
The soft film that holds dust and swarf against metal. It is what makes a part feel dirty long after it looks clean, and it comes off first.
- Carbon and soot
Baked carbon on a manifold, oven or weld fixture. Thermal shock is exactly the wrong thing for the bond holding it on, which is why this works.
- Adhesive and sealant
Bonded material that outlived whatever it was bonding, usually harder to shift than the part it is on.
- Resin and mold release
Cured process residue on a mold or fixture. The surface has to come out dimensionally unchanged, which rules out anything abrasive.
- Paint and coatings
Removed selectively where the substrate underneath has to survive, which rules out most abrasive approaches.
- Salt and corrosion product
A constant in South Florida. Removing it without stripping the protective finish is the whole trick.
- Ink and printing residue
Ink and coating on anilox and press rollers, surfaces where changing the texture changes the print.
How a job runs
What happens once you call
If you have not seen this done before, the process is worth reading once. Nothing below is hidden in a footnote.
- We look at access and containment
Siting the compressor, masking what must not be touched, and catching what comes off, settled before the first pellet.
- We test a small area
An out-of-sight patch comes first so pressure and pellet size are proven before anything that shows. Soft alloys, older paint and bare metal each want different numbers.
- We blast, then clean up
The ice is gone on impact. What is on the floor afterward came off your machine, and clearing it is ours to do.
- You look before we pack up
We would rather you find the missed spot while we are standing there than a week later. Another pass on the day is the cheapest fix available.
- You describe the job
The machine, the deposit and the downtime you can afford. Those three things decide the whole job, and we would rather know all of them before quoting.
What happens in your space
Masking happens first. Whatever is adjacent and vulnerable gets covered before the hose is picked up.
Dry ice is carbon dioxide in solid form. It is non-toxic and leaves no residue, but it does displace oxygen in an enclosed space, so ventilation is part of the setup rather than an afterthought.
The process is loud. Hearing protection is standard for anyone in the working area, which is why you will see ear defenders in most of our photographs.
Cold surfaces are the one aftereffect. Depending on the piece that is either a few minutes of patience or some condensation while it returns to room temperature.
Describe what you are dealing with.
Tell us what the machine is, where it is and what is on it. A photo or two speeds it up. One of the owners calls you back.