Abstract
The Darlington Tritium Removal Facility will generate both liquid and solid tritiated waste. Liquid waste will have to be conditioned and packaged prior to disposal to minimize the releases of tritium to the environment. The conditioning requirements for solid tritiated waste are presently under investigation. Earlier work on the conditioning of aqueous tritiated waste has shown that solidification by itself in either cement or an organic polymer matrix is inadequate to meet a tritium (as HTO) release target of 1 x 10{sup -3}% per day. Encapsulating the solidified waste in a 1-cm thick layer of water extendible polyester resin reduced the release rate to 1.3 x 10{sup -4}% per day over a 150-day leaching period. The release rate however, increased to 1.7 x 10{sup -3}% per day when averaged over the subsequent 600-day leaching period. Encapsulation, however, is a difficult process and the information presented in this report compares encapsulation with simple containerization in a low water permeable material such as polyethylene. The results indicate that the same degree of tritium (as HTO) retention can be achieved by replacing a 1-cm thick encapsulating layer of polymer resin with a .14-cm thick high density polyethylene container. Consequently, encapsulation should not be
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Citation Formats
Krasznai, J P.
Tritiated waste conditioning. Pt.3. Performance of containerized and encapsulated waste forms.
Canada: N. p.,
1985.
Web.
Krasznai, J P.
Tritiated waste conditioning. Pt.3. Performance of containerized and encapsulated waste forms.
Canada.
Krasznai, J P.
1985.
"Tritiated waste conditioning. Pt.3. Performance of containerized and encapsulated waste forms."
Canada.
@misc{etde_10128404,
title = {Tritiated waste conditioning. Pt.3. Performance of containerized and encapsulated waste forms}
author = {Krasznai, J P}
abstractNote = {The Darlington Tritium Removal Facility will generate both liquid and solid tritiated waste. Liquid waste will have to be conditioned and packaged prior to disposal to minimize the releases of tritium to the environment. The conditioning requirements for solid tritiated waste are presently under investigation. Earlier work on the conditioning of aqueous tritiated waste has shown that solidification by itself in either cement or an organic polymer matrix is inadequate to meet a tritium (as HTO) release target of 1 x 10{sup -3}% per day. Encapsulating the solidified waste in a 1-cm thick layer of water extendible polyester resin reduced the release rate to 1.3 x 10{sup -4}% per day over a 150-day leaching period. The release rate however, increased to 1.7 x 10{sup -3}% per day when averaged over the subsequent 600-day leaching period. Encapsulation, however, is a difficult process and the information presented in this report compares encapsulation with simple containerization in a low water permeable material such as polyethylene. The results indicate that the same degree of tritium (as HTO) retention can be achieved by replacing a 1-cm thick encapsulating layer of polymer resin with a .14-cm thick high density polyethylene container. Consequently, encapsulation should not be pursued further for this type of waste. Leaching data has shown that even for the short exposure times encountered (typically 4-5 hours) the components of the polymer resin solidification agent permanently increase the water permeability and hence tritium releases from the polyethylene containers.}
place = {Canada}
year = {1985}
month = {Nov}
}
title = {Tritiated waste conditioning. Pt.3. Performance of containerized and encapsulated waste forms}
author = {Krasznai, J P}
abstractNote = {The Darlington Tritium Removal Facility will generate both liquid and solid tritiated waste. Liquid waste will have to be conditioned and packaged prior to disposal to minimize the releases of tritium to the environment. The conditioning requirements for solid tritiated waste are presently under investigation. Earlier work on the conditioning of aqueous tritiated waste has shown that solidification by itself in either cement or an organic polymer matrix is inadequate to meet a tritium (as HTO) release target of 1 x 10{sup -3}% per day. Encapsulating the solidified waste in a 1-cm thick layer of water extendible polyester resin reduced the release rate to 1.3 x 10{sup -4}% per day over a 150-day leaching period. The release rate however, increased to 1.7 x 10{sup -3}% per day when averaged over the subsequent 600-day leaching period. Encapsulation, however, is a difficult process and the information presented in this report compares encapsulation with simple containerization in a low water permeable material such as polyethylene. The results indicate that the same degree of tritium (as HTO) retention can be achieved by replacing a 1-cm thick encapsulating layer of polymer resin with a .14-cm thick high density polyethylene container. Consequently, encapsulation should not be pursued further for this type of waste. Leaching data has shown that even for the short exposure times encountered (typically 4-5 hours) the components of the polymer resin solidification agent permanently increase the water permeability and hence tritium releases from the polyethylene containers.}
place = {Canada}
year = {1985}
month = {Nov}
}