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D 009 Blasting of ship's hull with CO2 ice pellets ( Date: 2001-12-19 )
Newly built ships made of steel covered with primer are cleaned of residue, oxides and soot from welding and gas cutting using CO2 pellets and a manual blasting equipment (pressed air operated), thereafter another corrosion protection paint is applied.
 


  Material  |  Dirt  |  Equipment  |  Agents  |  Process  |  Costs  |  Evaluate  |  Comparison  

Material:

Ships hull inside (cabins etc.); area of 300 m2 is cleaned during night shift (7.5 hrs.)
METAL / NON METAL : steel, stainless steel, aluminium
Shape : smooth surfaces, metal folding
Utilisation of equipment (throughput,workload) in % : 18.84
Maximum possible throughput of parts per year : No statement
Max. area which can be cleaned per year : 350.400 m

Dirt:

mud/dust, soot, rust, deposits
Previous process : Welding, gas cutting

Equipment:

Cryomax
CO2 blasting equipment, manual blasting equipment, driven by compressed air

Process:

Dry CO2 ice blasting

Duration of cleaning process for one part (min.) : No statement
Duration of cleaning process for the charge (min.) : No statement
Recycling : Step:1 Since the agent is produced from waste gases, a closed loop is achieved on global level. The agent sublimes, so only the dirt remains, which can be disposed of via municipal channels

Quality:

free of oil and grease, dry

St2, EN 55928-4, Paint supplier determines the process since the guarantee depends on an approved surface treatment.

Subsequent process:

long term corrosion converting coating (more than one year), Primer (airless)

Costs:

Total sum : 95.441,50 EURO / Year


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