Introducing the concept of the isodose for optimisation of decontamination activities in a radioactive fallout scenario
Hinrichsen, Y LU ; Finck, R LU ; Rääf, C LU
and Andersson, K G
LU
(2018)
In Journal of Radiological Protection
38(4).
p.1293-1310
- Abstract
In the recovery phase after a radioactive release incident, it is important to be able to focus decontamination operations on the areas that contribute most to the radiation dose. Monte Carlo simulations were applied to determine the shielding effect of a building against radiation from various directions, also giving information on the dose contributions at various locations inside the building from specific areas outside. The concept of the isodose was developed to optimise decontamination activities, and was applied as isodose lines to define the smallest areas that lead to a certain dose reduction through decontamination of areas surrounding the building. The shape and position of the isodose lines depend on the building's geometry,... (More)
In the recovery phase after a radioactive release incident, it is important to be able to focus decontamination operations on the areas that contribute most to the radiation dose. Monte Carlo simulations were applied to determine the shielding effect of a building against radiation from various directions, also giving information on the dose contributions at various locations inside the building from specific areas outside. The concept of the isodose was developed to optimise decontamination activities, and was applied as isodose lines to define the smallest areas that lead to a certain dose reduction through decontamination of areas surrounding the building. The shape and position of the isodose lines depend on the building's geometry, wall thickness, and material, and on the observation point inside the building. Calculations have been made with a surface resolution of 1 m2 for four observation points in a modular building, assuming depositions of 137Cs and 60Co on the ground surface and on the roof, as well as 1 cm below the ground surface to represent ground penetration. For example, a ten times as large area would have to be decontaminated to increase the dose reduction from 10% to 30%, if it is assumed that all the contamination is located at a depth of 1 cm.
(Less)
- author
- Hinrichsen, Y
LU
; Finck, R
LU
; Rääf, C
LU
and Andersson, K G
LU
- organization
- publishing date
- 2018-12
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- isodose, decontamination, radioactive fallout
- in
- Journal of Radiological Protection
- volume
- 38
- issue
- 4
- pages
- 18 pages
- publisher
- IOP Publishing
- external identifiers
-
- pmid:30152408
- scopus:85057163836
- ISSN
- 1361-6498
- DOI
- 10.1088/1361-6498/aadd24
- language
- English
- LU publication?
- yes
- id
- 45924687-a814-4068-8228-e343ad297e68
- date added to LUP
- 2019-06-12 13:02:34
- date last changed
- 2024-06-25 18:13:42
@article{45924687-a814-4068-8228-e343ad297e68,
abstract = {{<p>In the recovery phase after a radioactive release incident, it is important to be able to focus decontamination operations on the areas that contribute most to the radiation dose. Monte Carlo simulations were applied to determine the shielding effect of a building against radiation from various directions, also giving information on the dose contributions at various locations inside the building from specific areas outside. The concept of the isodose was developed to optimise decontamination activities, and was applied as isodose lines to define the smallest areas that lead to a certain dose reduction through decontamination of areas surrounding the building. The shape and position of the isodose lines depend on the building's geometry, wall thickness, and material, and on the observation point inside the building. Calculations have been made with a surface resolution of 1 m2 for four observation points in a modular building, assuming depositions of 137Cs and 60Co on the ground surface and on the roof, as well as 1 cm below the ground surface to represent ground penetration. For example, a ten times as large area would have to be decontaminated to increase the dose reduction from 10% to 30%, if it is assumed that all the contamination is located at a depth of 1 cm.</p>}},
author = {{Hinrichsen, Y and Finck, R and Rääf, C and Andersson, K G}},
issn = {{1361-6498}},
keywords = {{isodose; decontamination; radioactive fallout}},
language = {{eng}},
number = {{4}},
pages = {{1293--1310}},
publisher = {{IOP Publishing}},
series = {{Journal of Radiological Protection}},
title = {{Introducing the concept of the isodose for optimisation of decontamination activities in a radioactive fallout scenario}},
url = {{http://dx.doi.org/10.1088/1361-6498/aadd24}},
doi = {{10.1088/1361-6498/aadd24}},
volume = {{38}},
year = {{2018}},
}