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Transport of large particles released in a nuclear accident

Abstract

Highly radioactive particulate material may be released in a nuclear accident or sometimes during normal operation of a nuclear power plant. However, consequence analyses related to radioactive releases are often performed neglecting the particle nature of the release. The properties of the particles have an important role in the radiological hazard. A particle deposited on the skin may cause a large and highly non-uniform skin beta dose. Skin dose limits may be exceeded although the overall activity concentration in air is below the level of countermeasures. For sheltering purposes it is crucial to find out the transport range, i.e. the travel distance of the particles. A method for estimating the transport range of large particles (aerodynamic diameter d{sub a} > 20 {mu}m) in simplified meteorological conditions is presented. A user-friendly computer code, known as TROP, is developed for fast range calculations in a nuclear emergency. (orig.) (23 refs., 13 figs.).
Publication Date:
Oct 01, 1995
Product Type:
Technical Report
Report Number:
STUK-A-125
Reference Number:
SCA: 540130; 220502; PA: AIX-27:040846; EDB-96:088982; NTS-96:018584; SN: 96001598745
Resource Relation:
Other Information: PBD: Oct 1995
Subject:
54 ENVIRONMENTAL SCIENCES; 22 NUCLEAR REACTOR TECHNOLOGY; EARTH ATMOSPHERE; RADIOACTIVITY TRANSPORT; FISSION PRODUCT RELEASE; METEOROLOGY; PARTICLE SIZE; REACTOR ACCIDENTS; T CODES; THREE-DIMENSIONAL CALCULATIONS; WIND
OSTI ID:
235902
Research Organizations:
Finnish Centre for Radiation and Nuclear Safety (STUK), Helsinki (Finland)
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE96624094; ISBN 951-712-068-0; TRN: FI9600057040846
Availability:
INIS; OSTI as DE96624094
Submitting Site:
FIN
Size:
41 p.
Announcement Date:
Jun 17, 1996

Citation Formats

Poellaenen, R, Toivonen, H, Lahtinen, J, and Ilander, T. Transport of large particles released in a nuclear accident. Finland: N. p., 1995. Web.
Poellaenen, R, Toivonen, H, Lahtinen, J, & Ilander, T. Transport of large particles released in a nuclear accident. Finland.
Poellaenen, R, Toivonen, H, Lahtinen, J, and Ilander, T. 1995. "Transport of large particles released in a nuclear accident." Finland.
@misc{etde_235902,
title = {Transport of large particles released in a nuclear accident}
author = {Poellaenen, R, Toivonen, H, Lahtinen, J, and Ilander, T}
abstractNote = {Highly radioactive particulate material may be released in a nuclear accident or sometimes during normal operation of a nuclear power plant. However, consequence analyses related to radioactive releases are often performed neglecting the particle nature of the release. The properties of the particles have an important role in the radiological hazard. A particle deposited on the skin may cause a large and highly non-uniform skin beta dose. Skin dose limits may be exceeded although the overall activity concentration in air is below the level of countermeasures. For sheltering purposes it is crucial to find out the transport range, i.e. the travel distance of the particles. A method for estimating the transport range of large particles (aerodynamic diameter d{sub a} > 20 {mu}m) in simplified meteorological conditions is presented. A user-friendly computer code, known as TROP, is developed for fast range calculations in a nuclear emergency. (orig.) (23 refs., 13 figs.).}
place = {Finland}
year = {1995}
month = {Oct}
}