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Separation, storage, and disposal of krypton-85: status and projects

Abstract

Despite the relatively small impact of 85Kr to man the separation of fission krypton from the off-gas of fuel reprocessing plants must be taken into account. Combined with other advantages also in power reactor stations the retention of 85Kr seems to be attractive. Cryogenic processes are favored worldwide, because the technology has been well proven during several decades in air liquefaction and separation plants. Relatively small modifications must be made to adjust these processes to fission gas separation plants. Some fundamental data however are necessary for the design of a plant. Besides cryogenic processes a liquid adsorption for reprocessing off-gases and charcoal adsorption processes for reactor off-gas are under discussion. The retained krypton can be stored under air or water cooling in usual pressurized steel cylinders. However, legal problems may arise. The steel cylinders can be stored in engineered storage facilities for an intermediate period or finally. In Europe, however, the final storage will be questionable. Therefore, the dumping of 85Kr into the deep sea has been proposed. For this reason a revision of the London Convention is necessary, because the dumping of 85/Kr has not been specified. The IAEA as competent authority is asked to define the conditions for  More>>
Authors:
Publication Date:
Sep 15, 1976
Product Type:
Technical Report
Report Number:
GERHTR-177
Reference Number:
ERA-02-051049; EDB-77-110972
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; KRYPTON 85; RADIOACTIVE WASTE DISPOSAL; RADIOACTIVE WASTE PROCESSING; RADIOACTIVE WASTE STORAGE; RADIOACTIVE WASTE MANAGEMENT; ADSORPTION; CRYOGENICS; GEOLOGIC DEPOSITS; SEPARATION PROCESSES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; EVEN-ODD NUCLEI; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; KRYPTON ISOTOPES; MANAGEMENT; NUCLEI; PROCESSING; RADIOISOTOPES; SORPTION; STORAGE; WASTE DISPOSAL; WASTE MANAGEMENT; WASTE PROCESSING; WASTE STORAGE; YEARS LIVING RADIOISOTOPES; 052001* - Nuclear Fuels- Waste Processing; 052002 - Nuclear Fuels- Waste Disposal & Storage
OSTI ID:
8182653
Research Organizations:
Kernforschungsanlage Juelich G.m.b.H. (Germany). Inst. fuer Chemische Technologie
Country of Origin:
Germany
Language:
English
Submitting Site:
DE
Size:
Pages: 41
Announcement Date:
Sep 01, 1977

Citation Formats

Laser, M. Separation, storage, and disposal of krypton-85: status and projects. Germany: N. p., 1976. Web.
Laser, M. Separation, storage, and disposal of krypton-85: status and projects. Germany.
Laser, M. 1976. "Separation, storage, and disposal of krypton-85: status and projects." Germany.
@misc{etde_8182653,
title = {Separation, storage, and disposal of krypton-85: status and projects}
author = {Laser, M.}
abstractNote = {Despite the relatively small impact of 85Kr to man the separation of fission krypton from the off-gas of fuel reprocessing plants must be taken into account. Combined with other advantages also in power reactor stations the retention of 85Kr seems to be attractive. Cryogenic processes are favored worldwide, because the technology has been well proven during several decades in air liquefaction and separation plants. Relatively small modifications must be made to adjust these processes to fission gas separation plants. Some fundamental data however are necessary for the design of a plant. Besides cryogenic processes a liquid adsorption for reprocessing off-gases and charcoal adsorption processes for reactor off-gas are under discussion. The retained krypton can be stored under air or water cooling in usual pressurized steel cylinders. However, legal problems may arise. The steel cylinders can be stored in engineered storage facilities for an intermediate period or finally. In Europe, however, the final storage will be questionable. Therefore, the dumping of 85Kr into the deep sea has been proposed. For this reason a revision of the London Convention is necessary, because the dumping of 85/Kr has not been specified. The IAEA as competent authority is asked to define the conditions for dumping. Injection of krypton containing gases into porous geologic strata may also be possible, if a very small release can be guaranteed.}
place = {Germany}
year = {1976}
month = {Sep}
}