Federal State Unitary Enterprise - united ecological, scientific and
research centre of decontamination of radioactive waste (RAW) and
environmental protection
Grouting
Miniblock unit
The unit is intended to make the LRW-based grout and deliver it to the SRW grouting casks.
Specification:
Grout production capacity – up to 4 m3/h.
Capacity for impregnation of SRW with the grout in casks– up to 10 200 liter drums per hour..
The properties of the end cement compound are in compliance with GOST R 51883-2002
Compact system for radioactive waste grouting
The system is intended for grouting of liquid radioactive waste (LRW) with the salt content of up to 300 g/l, ion-exchange resin pulps, sorbents, filter perlite powders and solid radioactive waste (SRW) containerized in advance (in 200-liter drums) by grouting or through impregnation with highly penetrating grouts.
The system enables grout preparation using different additives that improve the grout quality with accurate batching of components.
The system comprises a compact combined mixer which consists of a tank with an agitator (60 l) and an electromagnetic mixer beneath it (3 l). The tank with the agitator is used for premixing the grout components with their final mixing in the electromagnetic mixer. The quality of the cement compound is improved thanks to mechanical and magnetic activation.
The compactness of the mixer and no intricately shaped parts make it possible to decontaminate the unit with a small amount of water (30 l). The system has manual, semiautomatic and automatic control modes.
LRW concentrator
The unit is intended for grouting finely dispersed radioactive waste (ash residue from RW combustion) through impregnating it with highly penetrating grouts. There are no SRW recharging, batching and grading stages. The amount of the end compound does not exceed the initial SRW amount charged.
Specification:
| Cask (drum) volume, l End product capacity, 100-liter drums per hour Grout production capacity, m/hour Pressure in the grout supply pipeline, atm |
100, 200 up to 2 0,05-0,3 0,2-6,0 |
| Dimensions, m: Length Width Height |
4 3 4 |
| Rarefaction in the working box, Pa Trolley speed, m/min Installed power, kW |
200 3,5 - |
LEVEL OF DEVELOPMENT
The impregnation method and the device for its implementation are protected by the Russian Federation Patent No. 2142657 S1, priority date 03.09.98, and the Russian Federation Patent No. 2199164 S2, priority date 18.04.01. A set of design documentation has been developed for the unit. The scientific rationale for the impregnation method was defended on 25.04.2004 by a Ph.D. thesis in specialization 05.17.02.
The unit is included in License No. GN-07-303-0770, dated 21.03.2002, granted to RADON for the handling of radioactive waste in its processing. Process regulations TP Kh-06.01/2006 have been developed and introduced.
