Abstract
Studies were made of radioactive fallout on roofs of farm buildings and of some methods of decontamination. The aim was to find ways of reducing the external radiation dose to farmers working and farm animals housed in stables in a fallout situation. The roof material studied was steel plate (A) and tile (B,C, D), each with four sample areas of ca. 1 m{sup 2}. The roof samples were collected at three places and from totally four building in regions which in 1986 (after the Chernobyl fallout) has a {sup 137}Cs ground depositions of 3040 kBq/m{sup 2} (A, B, C) and > 100 kBq/m{sup 2} (D). Four different decontamination methods were tested: 1. High pressure washing with water. 2. Repeated high pressure washing with water. 3. Application of foam of a sanitizing chemical for livestock buildings followed by high pressure washing with water. 4. Application of a solution of KCl followed by high pressure washing with water. In C, the effect of decontamination expressed as the percentage decrease of the {sup 137}Cs activity was on average for all methods, 55%. This material was coated before the decontamination by a marked growth of algae or moss, which was effectively washed off during
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Andersson, Inger;
[1]
Erlandsson, B;
[2]
Hansson, J;
Dolby, C M
[3]
- Swedish Univ. of Agricultural Sciences, Uppsala (Sweden). Dept. of Nutrition and Management
- Lund Univ. (Sweden). Dept. of Nuclear Physics
- Swedish Univ. of Agricultural Sciences, Lund (Sweden). Dept. of Farm Buildings
Citation Formats
Andersson, Inger, Erlandsson, B, Hansson, J, and Dolby, C M.
Studies of radioactive deposition on farm buildings and testing of some methods for decontamination; Studier av radioaktiv belaeggning paa lantbruksbyggnader och utprovning av laempliga dekontamineringsmetoder.
Sweden: N. p.,
1993.
Web.
Andersson, Inger, Erlandsson, B, Hansson, J, & Dolby, C M.
Studies of radioactive deposition on farm buildings and testing of some methods for decontamination; Studier av radioaktiv belaeggning paa lantbruksbyggnader och utprovning av laempliga dekontamineringsmetoder.
Sweden.
Andersson, Inger, Erlandsson, B, Hansson, J, and Dolby, C M.
1993.
"Studies of radioactive deposition on farm buildings and testing of some methods for decontamination; Studier av radioaktiv belaeggning paa lantbruksbyggnader och utprovning av laempliga dekontamineringsmetoder."
Sweden.
@misc{etde_10128007,
title = {Studies of radioactive deposition on farm buildings and testing of some methods for decontamination; Studier av radioaktiv belaeggning paa lantbruksbyggnader och utprovning av laempliga dekontamineringsmetoder}
author = {Andersson, Inger, Erlandsson, B, Hansson, J, and Dolby, C M}
abstractNote = {Studies were made of radioactive fallout on roofs of farm buildings and of some methods of decontamination. The aim was to find ways of reducing the external radiation dose to farmers working and farm animals housed in stables in a fallout situation. The roof material studied was steel plate (A) and tile (B,C, D), each with four sample areas of ca. 1 m{sup 2}. The roof samples were collected at three places and from totally four building in regions which in 1986 (after the Chernobyl fallout) has a {sup 137}Cs ground depositions of 3040 kBq/m{sup 2} (A, B, C) and > 100 kBq/m{sup 2} (D). Four different decontamination methods were tested: 1. High pressure washing with water. 2. Repeated high pressure washing with water. 3. Application of foam of a sanitizing chemical for livestock buildings followed by high pressure washing with water. 4. Application of a solution of KCl followed by high pressure washing with water. In C, the effect of decontamination expressed as the percentage decrease of the {sup 137}Cs activity was on average for all methods, 55%. This material was coated before the decontamination by a marked growth of algae or moss, which was effectively washed off during the sanitizing procedure. In B, the average activity decontamination effect was 25%, while in D (with the highest original activity, but without growth of organic material) the effect was very small, 3%. In A, the activity level before decontamination was so low that measurements after decontamination were considered unnecessary. Method number 4 was the most effective in B and C, 32% and 64%, respectively, while method number 3 was the most effective in D, 5.7%. The results indicate that good effects can be achieved in radioactivity decontamination of roof material with equipment and chemicals which are normally available on farms.}
place = {Sweden}
year = {1993}
month = {Dec}
}
title = {Studies of radioactive deposition on farm buildings and testing of some methods for decontamination; Studier av radioaktiv belaeggning paa lantbruksbyggnader och utprovning av laempliga dekontamineringsmetoder}
author = {Andersson, Inger, Erlandsson, B, Hansson, J, and Dolby, C M}
abstractNote = {Studies were made of radioactive fallout on roofs of farm buildings and of some methods of decontamination. The aim was to find ways of reducing the external radiation dose to farmers working and farm animals housed in stables in a fallout situation. The roof material studied was steel plate (A) and tile (B,C, D), each with four sample areas of ca. 1 m{sup 2}. The roof samples were collected at three places and from totally four building in regions which in 1986 (after the Chernobyl fallout) has a {sup 137}Cs ground depositions of 3040 kBq/m{sup 2} (A, B, C) and > 100 kBq/m{sup 2} (D). Four different decontamination methods were tested: 1. High pressure washing with water. 2. Repeated high pressure washing with water. 3. Application of foam of a sanitizing chemical for livestock buildings followed by high pressure washing with water. 4. Application of a solution of KCl followed by high pressure washing with water. In C, the effect of decontamination expressed as the percentage decrease of the {sup 137}Cs activity was on average for all methods, 55%. This material was coated before the decontamination by a marked growth of algae or moss, which was effectively washed off during the sanitizing procedure. In B, the average activity decontamination effect was 25%, while in D (with the highest original activity, but without growth of organic material) the effect was very small, 3%. In A, the activity level before decontamination was so low that measurements after decontamination were considered unnecessary. Method number 4 was the most effective in B and C, 32% and 64%, respectively, while method number 3 was the most effective in D, 5.7%. The results indicate that good effects can be achieved in radioactivity decontamination of roof material with equipment and chemicals which are normally available on farms.}
place = {Sweden}
year = {1993}
month = {Dec}
}