scholarly journals An experimental survey of the factors that affect leaching from low-level radioactive waste forms

1988 ◽  
Author(s):  
D.R. Dougherty ◽  
R.F. Pietrzak ◽  
M. Fuhrmann ◽  
P. Colombo
Keyword(s):  
Radioactive Waste ◽  
Low Level ◽  
Waste Forms ◽  
Low Level Radioactive Waste ◽  
Experimental Survey

scholarly journals Long-term lysimeter field testing of low-level radioactive waste forms

1995 ◽  
Author(s):  
J.W. Jr. McConnell ◽  
R.D. Rogers ◽  
J.D. Jastrow ◽  
W.E. Sanford ◽  
T.M. Sullivan
Keyword(s):  
Radioactive Waste ◽  
Field Testing ◽  
Low Level ◽  
Waste Forms ◽  
Low Level Radioactive Waste

scholarly journals Results after ten years of field testing low-level radioactive waste forms using lysimeters

1997 ◽  
Author(s):  
J.W. Jr. McConnell ◽  
R.D. Rogers ◽  
J.D. Jastrow ◽  
W.E. Sanford ◽  
S.R. Cline ◽  
...  
Keyword(s):  
Radioactive Waste ◽  
Field Testing ◽  
Low Level ◽  
Waste Forms ◽  
Low Level Radioactive Waste

Utilization of Radioactive Waste for Solidifying Material to Fill Waste Forms

2001 ◽  
Author(s):  
Takeshi Ishikura ◽  
Daiichiro Oguri
Keyword(s):  
Radioactive Waste ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Filling Ratio ◽  
Improved Method ◽  
Low Level ◽  
Waste Forms ◽  
Disposal Facility ◽  
Low Level Radioactive Waste

Abstract Minimizing the volume of radioactive waste generated during dismantling of nuclear power plants is a matter of great importance. In Japan waste forms buried in shallow burial disposal facility as low level radioactive waste (LLW) must be solidified by cement with adequate strength and must extend no harmful openings. The authors have developed an improved method to minimize radioactive waste volume by utilizing radioactive concrete and metal for mortar to fill openings in waste forms. Performance of a method to pre-place large sized metal or concrete waste and to fill mortar using small sized metal or concrete was tested. It was seen that the improved method substantially increases the filling ratio, thereby decreasing the numbers of waste containers.

Development of Methodology to Evaluate Microbially Influenced Degradation of Cement-Solidified Low-Level Radioactive Waste Forms

1993 ◽  
Vol 333 ◽  
Author(s):  
Robert D. Rogers ◽  
M.A. Hamilton ◽  
R.H. Veeh ◽  
J.W. Mcconnell
Keyword(s):  
Radioactive Waste ◽  
Evaluation Method ◽  
Structural Integrity ◽  
Nuclear Regulatory Commission ◽  
The United States ◽  
Ion Exchange Resin ◽  
Low Level ◽  
Waste Forms ◽  
Simulated Waste ◽  
Low Level Radioactive Waste

ABSTRACTBecause of its apparent structural integrity, cement has been widely used in the United States as a binder to solidify Class B and C low-level radioactive waste (LLW). However, the resulting cement preparations are susceptible to failure due to the actions of stress and environment. An environmentally mediated process that could affect cement stability is the action of naturally occurring microorganisms. The U.S. Nuclear Regulatory Commission (NRC), recognizing this eventuality, stated that the effects of microbial action on waste form integrity must be addressed.This paper provides present results from an ongoing program that addresses the effects of microbially influenced degradation (MID) on cement-solidified LLW. Data are provided on the development of an evaluation method using acid-producing bacteria. Results are from work with one type of these bacteria, the sulfur-oxidizing Thiobacillus. This work involved the use of a system in which laboratory- and vendor-manufactured, simulated waste forms were exposed on an intermittent basis to media containing thiobacilli. Testing demonstrated that MID has the potential to severely compromise the structural integrity of ion-exchange resin and evaporator-bottoms waste that is solidified with cement. In addition, it was found that a significant percentage of calcium and other elements were leached from the treated waste forms. Also, the surface pH of the treated specimens decreased to below 2. These conditions apparently contributed to the physical deterioration of simulated waste forms after 60 days of exposure to the thiobacilli.

scholarly journals Accelerated Leach Test for Low-level Radioactive Waste Forms in the Hungarian NPP Paks

2017 ◽  
Vol 07 (04) ◽  
Author(s):  
Gyorgy Patzay ◽  
Otto Zsille ◽  
Jozsef Csurgai ◽  
Gyula Vass ◽  
Ferenc Feil
Keyword(s):  
Radioactive Waste ◽  
Low Level ◽  
Waste Forms ◽  
Leach Test ◽  
Low Level Radioactive Waste

Improvement of Characteristics of Solidified Radioactive Waste Forms with Polymer-Concrete Layer

1994 ◽  
Vol 353 ◽  
Author(s):  
Alexandre J. Grebenkov ◽  
Vitaly P. Trubnikov ◽  
Antonina B. Verzhynskaja ◽  
Victor A. Nikolajev ◽  
Inna B. Kapustina
Keyword(s):  
Radioactive Waste ◽  
Polymer Concrete ◽  
Composite Matrix ◽  
National Programme ◽  
Low Level ◽  
Waste Forms ◽  
Concrete Layer ◽  
Solidified Waste ◽  
Low Level Radioactive Waste ◽  
Chernobyl Zone

AbstractWithin the framework of the Belarus National Programme, IPEP is performing research on the immobilization of low level radioactive waste after decontamination and remediation of Chernobyl Zone. The goal of the R&D programme is to develop a composite matrix for embedding these wastes using special encapsulation technology and reinforced and hydro-resisting polymer-concrete layer on solidified waste blocks to minimise the amount of cement for conditioning of waste.

Accelerated leach test for low-level radioactive waste forms in the Hungarian NPP Paks

2019 ◽  
Vol 24 (3) ◽  
pp. 302
Author(s):  
Ferenc Feil ◽  
György Pátzay ◽  
Ottó Zsille ◽  
Jozsef Csurgai ◽  
Gyula Vass
Keyword(s):  
Radioactive Waste ◽  
Low Level ◽  
Waste Forms ◽  
Leach Test ◽  
Low Level Radioactive Waste
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