Cocoon Mothballing system
Anti-corrosion Drying Systems for every size
Cocoon Holland BV specialises in ready-made solutions for storage problems. We provide made-to measure work for all objects subject to corrosion, whether this is an aeroplane, a ship or expensive apparatus such as heat exchangers, conversion installations or even entire factory installations.
Depending on the format and the duration of conservation of the object, the condition of the enclosed air is kept beneath the so-called ‘rust-border’ in a simple way. This can be done for small objects for a short period of time by using an absorbent drying substance. For larger objects, and for longer periods of storage, we will install an ‘economiser system’, which is controllable. For this we use automatically regulated air dryers, which keep the enclosed air constantly in circulation. The air-dryer produces unheated, dry air and automatically regenerates the built-in drying substance.
Anti-corrosion Drying Systems for every size
Cocoon Holland BV specialises in ready-made solutions for storage problems. We provide made-to measure work for all objects subject to corrosion, whether this is an aeroplane, a ship or expensive apparatus such as heat exchangers, conversion installations or even entire factory installations.
Depending on the format and the duration of conservation of the object, the condition of the enclosed air is kept beneath the so-called ‘rust-border’ in a simple way. This can be done for small objects for a short period of time by using an absorbent drying substance. For larger objects, and for longer periods of storage, we will install an ‘economiser system’, which is controllable. For this we use automatically regulated air dryers, which keep the enclosed air constantly in circulation. The air-dryer produces unheated, dry air and automatically regenerates the built-in drying substance.
More information
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Simple Application
- Departments of Defense in various countries
- Petrochemical Industry, incl. Shell, Esso and DSM
- International Aeroplane Industries, incl. Fokker and KLM
- Shipping companies, o.a. Shell Tankers, Nedlloyd, M.I.S.C. and Petronas
- Harbour Contractors and Dredging work
- Offshore industries, inc.NAM andClyde
- Shipyards
- Machine Manufacturers
- Heavy Industry, incl. Corus, Hoek Loos and DSM.
Aircraft and Ships
This is not the case with ships. Here we ensure that the interior of the ship is hermetically sealed – the machine room, accommodation, deck houses, as well as the funnels and ventilation shafts. In addition the deck installations are separately enclosed. The Cocoon Mothballing System is adapted so that the interior of the ship can be reached at any time without compromising the conservation system.
In Den Helder 1960, the first mine sweepers were conserved using the Cocoon Mothballing System. In 1976, these ships were re-commissioned and were put back into service, following a normal check of the apparatus, as carried out when a ship has been out of commission for three months.
During the 16 year period of storage, no maintenance was carried out on the ‘mothballed’ parts of the ships, including nautical and weapons installations on the deck. This method was so successful that since then, minesweepers have regularly been ‘mothballed’.
Specific Solutions
We developed a solution for the storage of reserve parts for LNG Tankers (from Petronas and Shell, amongst others) together with the Japanese Company, Fuji Trading Co. Special halls were built, in which the parts, such as bull gear, tail shafts, etc., are stored in the original packing (crates). The entire hall was conditioned by means of air-drying, so that the reserve parts were always easily accessible.
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Cocoon has the solution
