What builds up, and why it matters
On this kind of work the problem is salt, corrosion product, oil, exhaust soot and bilge residue. South Florida salt air never stops working on a vessel. Abrasive cleaning takes the protective finish with the salt; dry ice removes the contamination and leaves the coating.
Work happens dockside, in the yard or aboard. The people who call us about engine room are usually captains, yards and vessel owners, and the thing they are actually worried about is stripping a coating that was the only thing holding corrosion back.
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 marine 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 engine room?
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
What the alternatives actually do
- Media blasting
It takes the top off whatever it touches. That is the point on rusted plate and the problem everywhere else.
- 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
Chemistry works, but you inherit ventilation, waste handling and a film on the surface.
- Hand scraping
Labor-intensive and uneven, and whatever you scrape with eventually marks what you are scraping.
- Dry ice
Thermal shock breaks the bond. The pellet sublimates, so nothing abrasive touches the part and nothing is left to collect but the contaminant.
What comes off
What comes off, and why
If it is bonded to the surface rather than part of it, there is a good chance this takes it off. The list below covers most of what we are called out for.
- 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
Heat-bonded black deposit. Because heat put it there, a sudden cold front is what breaks its grip.
- Adhesive and sealant
The stubborn film under old tape, or the gasket that tore and left half of itself behind.
- 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
Ink and coating on anilox and press rollers, surfaces where changing the texture changes the print.
How a job runs
Nothing about this should be a surprise
Nobody should have to guess what they booked. This is every stage of a job in the order it happens.
- 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
Nothing is left of the pellet, so the only thing to collect is what was on your equipment. That collection is part of the work we quoted.
- You look before we pack up
If something needs another pass we do it then, on site, while the rig is still running. That is a better outcome for everyone than a callback.
- You describe the job
Send images if you can, they settle most of the questions. A wrong-tool verdict comes on that first call, not after the invoice.
- We look at access and containment
How close the truck can get, how far the hose must run, what needs covering, and where the debris goes. That is the bulk of the planning on a tight site.
What to expect on site
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.
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.
The part will be cold when we finish. Sometimes that means a short wait before handling; sometimes it means a film of condensation as it warms back up.
Describe what you are dealing with.
A short description and a location is enough to start. Add photos if you can. You will speak to an owner, not a scheduler.