A rapid growth of interest in superinsulation has been noted in 1970-80s and has been connected with the development of cryogenic engineering, space engineering, aviation, surface and underwater sea fleet. An interest in superinsulation was also resumed in the end of 1990s and in the beginning of the 21st century. The development of hydrogen power industry in the symbiosis with nuclear power industry is a part of prospective national programs of a number of developed states. The placement of a nuclear reactor in the world ocean water area for hydrogen production and liquefied hydrogen transportation to an island
is one of the prospective projects of the Japanese power industry development. In order to store reserves of liquid hydrogen, oxygen and other liquefied gases, effective cryogenic reservoirs and pipelines will probably be required.

The volatility of most effective reservoirs is 0.8-1% per day of the total amount of liquid being stored.

Giant dimensions of present-day reservoirs determine a large amount of expenses on manufacture of the internal and external reservoir shells. In order to optimise expenses, the external shell is manufactured from a low-alloyed steel. The latter circumstance leads to increased gas releases of inter-lattice hydrogen into the heat-insulating cavity. The hydrogen content in the casing metal of most spread modern cryogenic reservoirs is 9.5-11 cm3/100 grams of metal. Zeolites being most widely used in Russian cryogenic engineering in cryoadsorption pumps comparatively well absorb hydrogen in the range of 20.2K and considerably worse at higher temperature.

As a result of long-term reservoir utilisation without a possibility to conduct of obligatory process of technological TIP blowings of heat-insulating cavities (HIC) and KSN regeneration, the amount of residual hydrogen in HIC achieves significant values. The reason of the hydrogen concentration increase in HIC can be both the inter-lattice hydrogen of structural materials and hydrogen inflowing (or diffusing) through microleaks from the internal vessel at the storage of hydrogen therein as well as from the atmosphere. The consequence of it is a considerable increase of the cryogenic liquid volatility. The situation being considered is much more related to the emergency categories and manifests itself to the full extent quite rarely. However engineers dealing with the operation of such systems can rather often observe the phase of appearance of several occurrences of this situation at the normal functioning of the reservoir too, especially at the final stage of the routine maintenance interval.