Cocoon Mothballing system
The Cocoon Mothballing System provides the objects to be protected with a weather-proof, tough and seamless Cocoon ‘skin’, which is hermetically sealed against moisture and dust. Within this ‘cocoon’, the relative humidity is kept at approximately 40%, which prevents the formation of mould and corrosion. In addition, rubber and other used synthetic materials remain intact at this humidity level. Materials protected in this way are available for use at any time.
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 during the corona crisis, 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
The external skin of an aircraft is of extreme importance. An aircraft can also be placed ‘in mothballs’ in its entirety, including the motors, the electronic equipment and all other systems!
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
Together with NAM, Cocoon Holland BV has developed a solution for the storage of fire fighting materials. These are kept in ‘easy access’ crates, which can be opened in an emergency situation, so that the material can be used. This solution has led to a large reduction in the failure rate.
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.
Find out more about mothballing for the LNG industry.
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