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 refinery equipment 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 refinery equipment?
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
- Hand scraping
Slow, inconsistent, and the tool marks the surface. Fine for a small area, unworkable across a machine.
- Media blasting
It takes the top off whatever it touches. That is the point on rusted plate and the problem everywhere else.
- Pressure washing
Drives water into harnesses, bearings, panels and seams, then everything waits to dry. On electrical work it is simply not an option.
- Solvent and degreaser
Chemistry works, but you inherit ventilation, waste handling and a film on the surface.
- Dry ice
Cold breaks the bond and the media vanishes. The substrate is untouched and there is no second mess to clean up.
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.
- Resin and mold release
Production residue cured onto tooling. Solvent softens it and leaves its own film; the ice lifts it and takes nothing with it.
- Paint and coatings
Selective removal, layer by layer, on parts where media blasting would cut into the substrate.
- Salt and corrosion product
Salt deposit and the oxidation it starts. Anything abrasive removes the protection along with the salt.
- Ink and printing residue
Dried ink and coating build-up on rollers and press components, where the surface texture is the product.
- Food residue
Carbonized product, fat, starch and sugar build-up on processing equipment, cleaned without chemicals touching a food contact surface.
- Grease and oil
Oil film is the layer everything else sticks to. Remove it and half the job is already done.
- Carbon and soot
The hard black crust on a housing, an oven or a weld cell. Bonded by heat, and the first thing to release under thermal shock.
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 test a small area
Settings get proven somewhere nobody looks before they get used somewhere everybody does. What is correct on cast iron will mark aluminum, so the test is not a formality.
- We blast, then clean up
The ice is gone the moment it does its work. What stays behind is the grease or carbon that came off, and collecting that is part of the job, not an extra.
- You look before we pack up
A second pass while everything is still connected is free in every sense. A return trip is not.
- You describe the job
Describe the equipment and the mess. If it cannot come offline that changes the plan, so say so early.
- We look at access and containment
Hose run, compressor position, what needs masking, and where the contaminant is collected. For food and electrical jobs the containment plan takes longer to settle than the blasting does.
What happens in your space
Surfaces come out cold. On some jobs that means waiting a few minutes before handling, and on others it means condensation as the part returns to ambient temperature.
Air comes from our own compressor. You do not need to provide power, water or a connection of any kind.
Masking happens first. Whatever is adjacent and vulnerable gets covered before the hose is picked up.
The media is solid CO2, nothing toxic and nothing left behind, but it pushes oxygen out of a closed room. Ventilation gets planned before the hose is connected.
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.