Published September 13, 1984 | Version v1
Patent Open

Process for binding radioactive waste containing boric acid in a block of concrete

Creators

Description

Dried radioactive waste is made into a dough with water and this dough is liquified by adding caustic soda solution. Sand, Portland cement and plaster are then stirred in and the blocks formed are hardened for several days. Before hardening, the blocks are compressed by vibration. The pH value is set to 6.5-7 for the waste made into dough. (PW)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Getrocknete, radioaktive Abfaelle werden mit Wasser angeteigt und dieser Teig durch Zugabe von Natronlauge verfluessigt. Dann werden Sand, Portlandzement und Gips eingeruehrt und die gebildeten Bloecke mehrere Tage gehaertet. Vor dem Haerten werden die Bloecke durch Ruetteln verdichtet. Der pH-Wert wird bei den angeteigten Abfaellen auf 6,5-7 eingestellt. (PW)

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Additional details

Additional titles

Original title (German)
Verfahren zum Einbinden von borsaeurehaltigen radioaktiven Abfaellen in einen Betonblock

Publishing Information

Imprint Pagination
3 p.
IPC:
Int. Cl. G21F 9/16.
IPC
Int. Cl. G21F 9/16.
Patent number
DE patent document 2757669/C/

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
18042723
Subject category
S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
BORIC ACID; CEMENTS; COMPACTING; GYPSUM; LIQUID WASTES; PH VALUE; PWR TYPE REACTORS; RADIOACTIVE WASTE PROCESSING; REACTOR COOLING SYSTEMS; SAND; SODIUM HYDROXIDES; SOLIDIFICATION; WASTE WATER
Descriptors DEC
ALKALI METAL COMPOUNDS; BORON COMPOUNDS; BUILDING MATERIALS; COOLING SYSTEMS; ENRICHED URANIUM REACTORS; FABRICATION; HYDROGEN COMPOUNDS; HYDROXIDES; INORGANIC ACIDS; INORGANIC COMPOUNDS; MANAGEMENT; MATERIALS; MINERALS; OXYGEN COMPOUNDS; POLAR SOLVENTS; POWER REACTORS; REACTOR COMPONENTS; REACTORS; SODIUM COMPOUNDS; SOLVENTS; SULFATE MINERALS; THERMAL REACTORS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; WATER; WATER COOLED REACTORS; WATER MODERATED REACTORS