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 bilge equipment 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 bilge 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
How this compares to the usual methods
- Media blasting
Grit removes material to do its job, so a machined face or a plated part pays for the cleaning.
- Pressure washing
It is fast and it is wet, which is fine outdoors and unusable on anything with a winding in it.
- Solvent and degreaser
Chemistry works, but you inherit ventilation, waste handling and a film on the surface.
- Hand scraping
Hours of work for an inconsistent result, with gouges where the blade slipped.
- 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
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.
- Paint and coatings
Taken off in a controlled way when what is underneath matters more than speed.
- Salt and corrosion product
The year-round problem on the coast. The finish holding corrosion back has to survive the cleaning.
- Ink and printing residue
Ink and coating on anilox and press rollers, surfaces where changing the texture changes the print.
- Food residue
Carbonized product build-up in a plant where neither standing water nor a chemical film is acceptable.
- Grease and oil
The greasy base coat that traps grit and dust. It releases early and takes the loose material with it.
- 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
Cured sealant, old gasket, tape glue and sound deadening, the residue left when something was removed but its bond was not.
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 blast, then clean up
The media disappears on contact; the contaminant does not. Gathering what came off is included, not a line added afterward.
- 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
The layout decides the method more often than the contaminant does. We work out reach and containment before quoting anything.
- We test a small area
Pressure and pellet size get dialed in on an inconspicuous spot before we touch anything visible. Painted parts, soft alloys and older finishes all behave differently, and the right setting on one is the wrong setting on another.
What happens in your space
Anything nearby that should not be touched gets masked before we start. That is quicker than explaining it afterward.
Solid carbon dioxide leaves no residue at all. What it does do is displace air, so an enclosed space gets ventilated as part of the job rather than as a precaution added later.
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.
Send us the job.
Give us the job, the address and a rough description, pictures if you have them. The call back comes from Giancarlo or Kenny directly.