Flow of radioactive gases through ground layers
Description
In connection with the proposed underground construction of nuclear power stations, this study investigates how the radioactive gases released into the surrounding ground layers during a hypothetical reactor accident (LOCA) diffuse in this porous medium. To calculate the one-dimensional pressure pattern in the ground layers in cartesion cylinder or spherical coordinates as well as the gas mass escaping on the earth's surface, a computer programme has been worked out which solves the equations describing the flow by means of an explicite difference method. Test calculations show that the retention properties of the geological materials are governed to a high degree by their permeability. (orig.)
Availability note (English)
MF available from INIS under the Report Number.Abstract (German)
Im Zusammenhang mit einer unterirdischen Bauweise von Kernkraftwerken wird untersucht, wie sich die durch einen hypothetischen Reaktorunfall (LOCA) in die umgebenden Erdschichten freigesetzten radioaktiven Gase in dem poroesen Medium ausbreiten. Zur Berechnung des eindimensionalen Druckverlaufs in den Erdschichten in kartesischen-, Zylinder oder Kugelkoordinaten und der an der Erdoberflaeche ausstroemenden Gasmasse wurde ein Rechenprogramm erstellt, das mittels eines expliziten Differenzenverfahrens die den Stroemungsvorgang beschreibenden Gleichungen loest. Testrechnungen zeigen, dass die Rueckhaltewirkung der verschiedenen Erdmaterialien stark durch deren Permeabilitaet bestimmt wird. (orig.)
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Additional details
Additional titles
- Original title (German)
- Stroemung von radioaktiven Gasen durch Erdschichten
Publishing Information
- Imprint Pagination
- 71 p.
- Report number
- IKE--6-104
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 8306405
- Subject category
- S61: RADIATION PROTECTION AND DOSIMETRY;
- Descriptors DEI
- DIFFUSION; FISSION PRODUCT RELEASE; FISSION PRODUCTS; GEOLOGIC STRUCTURES; LOSS OF COOLANT; PERMEABILITY; RADIONUCLIDE MIGRATION; SOILS; UNDERGROUND NUCLEAR STATIONS
- Descriptors DEC
- ACCIDENTS; ISOTOPES; NUCLEAR FACILITIES; NUCLEAR POWER PLANTS; POWER PLANTS; RADIOACTIVE MATERIALS; REACTOR ACCIDENTS; THERMAL POWER PLANTS
Optional Information
- Notes
- 19 figs.; 3 tabs.; 10 refs.