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Geochemical processes in marine salt deposits: Their significance and their implications in connection with disposal of radioactive waste within salt domes

Journal Article:

Abstract

Attempts to effect permanent disposal of radioactive wastes in marine evaporites should do nothing to disturb, either in the short or the long term, the present relative stability of such bodies of rock. It is necessary to take account of all of the geochemical and physico-chemical reactions known to have been involved in the processes which formed the evaporites before proceeding to an acceptable strategy for disposal of radionucleides. These processes can be represented as three kinds of metamorphism: 1. solution metamorphism, 2. thermal metamorphism, 3. dynamic metamorphism. In all of the evaporite occurrences in Germany such processes have been influential in altering, on occasion significantly, the primary mineralogical composition and have also promoted a considerable degree of transposition of material. Given similar geochemical and physico-chemical premises, these metamorphic processes could become effective now or in the future. It is therefore necessary to discuss the following criteria when examining salt domes as permanent repositories of highly radioactive substances: (1) Temperatures <= 90/sup 0/ +- 10/sup 0/C at the contact between waste containers and rock salt; (2) Temperatures <= 75/sup 0/C within zones of carnallite rocks; (3) Immobilisation of high-level waste in crystalline forms whenever possible; (4) Systems of additional safety  More>>
Authors:
Herrmann, A G [1] 
  1. Goettingen Univ. (Germany, F.R.). Geochemisches Inst.
Publication Date:
Jan 01, 1980
Product Type:
Journal Article
Reference Number:
AIX-12-582560; EDB-81-020483
Resource Relation:
Journal Name: Z. Dtsch. Geol. Ges.; (Germany, Federal Republic of); Journal Volume: 131:2
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 58 GEOSCIENCES; RADIOACTIVE WASTE DISPOSAL; SALT DEPOSITS; GEOCHEMISTRY; METAMORPHISM; UNDERGROUND STORAGE; CHEMISTRY; GEOLOGIC DEPOSITS; MANAGEMENT; STORAGE; WASTE DISPOSAL; WASTE MANAGEMENT; 052002* - Nuclear Fuels- Waste Disposal & Storage; 050900 - Nuclear Fuels- Transport, Handling, & Storage; 580400 - Geochemistry- (-1989)
OSTI ID:
6722561
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Journal ID: CODEN: ZDGGA
Submitting Site:
INIS
Size:
Pages: 433-459
Announcement Date:
Feb 01, 1981

Journal Article:

Citation Formats

Herrmann, A G. Geochemical processes in marine salt deposits: Their significance and their implications in connection with disposal of radioactive waste within salt domes. Germany: N. p., 1980. Web.
Herrmann, A G. Geochemical processes in marine salt deposits: Their significance and their implications in connection with disposal of radioactive waste within salt domes. Germany.
Herrmann, A G. 1980. "Geochemical processes in marine salt deposits: Their significance and their implications in connection with disposal of radioactive waste within salt domes." Germany.
@misc{etde_6722561,
title = {Geochemical processes in marine salt deposits: Their significance and their implications in connection with disposal of radioactive waste within salt domes}
author = {Herrmann, A G}
abstractNote = {Attempts to effect permanent disposal of radioactive wastes in marine evaporites should do nothing to disturb, either in the short or the long term, the present relative stability of such bodies of rock. It is necessary to take account of all of the geochemical and physico-chemical reactions known to have been involved in the processes which formed the evaporites before proceeding to an acceptable strategy for disposal of radionucleides. These processes can be represented as three kinds of metamorphism: 1. solution metamorphism, 2. thermal metamorphism, 3. dynamic metamorphism. In all of the evaporite occurrences in Germany such processes have been influential in altering, on occasion significantly, the primary mineralogical composition and have also promoted a considerable degree of transposition of material. Given similar geochemical and physico-chemical premises, these metamorphic processes could become effective now or in the future. It is therefore necessary to discuss the following criteria when examining salt domes as permanent repositories of highly radioactive substances: (1) Temperatures <= 90/sup 0/ +- 10/sup 0/C at the contact between waste containers and rock salt; (2) Temperatures <= 75/sup 0/C within zones of carnallite rocks; (3) Immobilisation of high-level waste in crystalline forms whenever possible; (4) Systems of additional safety barriers around the waste containers or the unreprocessed spent fuel elements. The geochemical and physical effectiveness of the barriers within an evaporite environment must be guaranteed. For example: Ni-Ti-alloys, corundum, ceramic, anhydrite.}
journal = {Z. Dtsch. Geol. Ges.; (Germany, Federal Republic of)}
volume = {131:2}
journal type = {AC}
place = {Germany}
year = {1980}
month = {Jan}
}