Let’s go back to September 1989. In Japan, Cocoon was commissioned to store all kinds of parts of a turbo generator. When an LNG tanker would request a part, it was crucial that it would be delivered quickly so that their delivery obligation could still be met. For 30 years the parts were stored outside in Moji (Japan), a place by the coast with heavy weather conditions, utilizing our unique mothballing system. And now thirty years later we received a phone call: a part was needed.
LNG ships: spare parts must be ready
The LNG tankers, sailing chemical plants, transport gas which is below -162 ° C, so that it remains liquid. Spare parts must be readily available at all times due to their delivery obligations. Ship propellers, propeller shafts, gears, transformers, turbo generators and different types of valves: all parts that may suddenly be needed when a defect arises. That problem could arise tomorrow, but also in 29 years or so.
And that was the case in Moji. After almost thirty years, the spare part was suddenly required and had to be removed from storage. After almost thirty years the Cocoon envelope was cut open so that the part could be lifted out. Then it was sent to the producer for inspection. And what turned out: the part was stored in perfect condition in those 29 years and could be placed in the LNG tanker without maintenance.
Conserving, how do we do that?
We reduce the humidity levels to 38%. At this percentage the applied materials of the part remain intact. Steel, rubbers, wiring, plastic plates: all rustproof due to the low humidity. The special feature of our drying system is that we also keep the ozone out of the air, in contrast to air conditioning. Air humidity does not drop below 55%, and this has negative consequences for, for example, rubber that can crack.
What makes Cocoon so unique?
We can pack and conserve complicated construction and large parts in a relatively simple manner. Our storage depots are everywhere: from Japan to Singapore and from Qatar to Indonesia. Curious about what else we do? Read more about our contribution to the international project Iter.