We have discussed your request for the insulation specification with our engineering department and our sub supplier. As already mentioned in my e-mail dtd 13 January insulating the reactor on site will only be feasible if the work can be carried out on site by others. However this would not be a fully welded / water tight design that would be done by us at our works. M+ W would have to look at local supply to provide the insulation and cladding.
The reasons being that a fully welded st st insulation jacket can only be fitted to the reactor at the manufacturing site before the jacket pressure test. The insulation rings at the top of the jacket and near the outlet nozzle are welded to the jacket. As the jacket is a pressure part it requires to be pressure tested and witnessed by the notifying body. The fitting of the st st shell and dished end is carried out while the reactor is upside down, i.e. the top head nozzles are pointing down. Only in this position is it possible to accurately align and tack the heavy st st shell to the st st dished end and carry out the long circumferential weld. After discussions with our sub-supplier this kind of work cannot be carried out on the reactor already shipped.
The best option is to use a specialist firm. We have asked our sub-supplier for guidance who have suggested the following
Spacers would have to be attached in regular distances to the vessels jacket.
The insulation material would be mineral fibre mats which are cut to size and fitted to the vessel.
The sheathing material would be st. st plates which will be rounded and crimped and fixed with self tapping screws.
I have attached two pictures that show how a vessel insulated this way would typically look.
Please advise if you still wish to set up weekly conference call.