FIELD: machine engineering.
SUBSTANCE: gripping and locking/unlocking system is provided by one or more engaging devices ensuring both sealed locking/unlocking of the inner tube together with the gripping element and the inner tube in the outer tube, and it is applied only when the gripping element is moved to displacement A or displacement B. The system is a system for inserting and removing the sample holder tube intended for placing a sample of nuclear materials, for example nuclear fuel, inside and outside the measuring tube of instrument holder intended for placing measurement sensors and the cooling system.
EFFECT: invention makes it possible to handle holders of samples of nuclear materials in research nuclear reactor to ensure extraction of holders of samples without any damage in protective shell with respect to external medium, reliable, simple in manufacture and quick in use.
16 cl, 26 dwg
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