METHOD FOR CONSERVATION OF PROCESSED NUCLEAR FUEL REPOSITORIES FOR LONG-TERM STORAGE Russian patent published in 2007 - IPC G21F9/34 

FIELD: nuclear engineering.

SUBSTANCE: method for conservation of processed nuclear fuel repositories on ships of nuclear-technological provision for long-term storage includes filling of sections of repository with liquid-phase composition of hardening substances, transferring remaining highly active fractions to reliable matrix structure, and creation of system of immobilization barriers. For filling of repository with composite, standard technological apertures of repository are used. During that, successively, with time delay, firstly lower part of all sections present in repository is filled, then upper section of same and, successively, inter-section, inter-foredeck and above-foredeck spaces. For filling lower part of sections, epoxyacryl composite is used with radiation resistance not less than 8000 Mrad, and for filling other spaces - concrete small-grain composite with radiation resistance not less than 6000 Mrad.

EFFECT: increased reliability and efficiency.

2 cl, 6 dwg