scholarly journals Crystalline Ceramic Waste Forms: Comparison Of Reference Process For Ceramic Waste Form Fabrication

2013 ◽  
Author(s):  
K. S. Brinkman ◽  
J. C. Marra ◽  
J. Amoroso ◽  
M. Tang
Keyword(s):  
Waste Form ◽  
Ceramic Waste ◽  
Waste Forms ◽  
Reference Process ◽  
Crystalline Ceramic

Aging Studies of Pu-238 and -239 Containing Calcium Phosphate Ceramic Waste-forms

2013 ◽  
Vol 1518 ◽  
pp. 73-78 ◽  
Author(s):  
Shirley K. Fong ◽  
Brian L. Metcalfe ◽  
Randall D. Scheele ◽  
Denis M. Strachan
Keyword(s):  
Calcium Phosphate ◽  
Accelerated Aging ◽  
Waste Form ◽  
Calcium Phosphate Ceramic ◽  
Ceramic Waste ◽  
Waste Forms ◽  
Aging Studies ◽  
Flow Through ◽  
Pyrochemical Reprocessing

ABSTRACTA calcium phosphate ceramic waste-form has been developed at AWE for the immobilisation of chloride containing wastes arising from the pyrochemical reprocessing of plutonium. In order to determine the long term durability of the waste-form, aging trials have been carried out at PNNL. Ceramics were prepared using Pu-239 and -238, these were characterised by PXRD at regular intervals and Single Pass Flow Through (SPFT) tests after approximately 5 yrs.While XRD indicated some loss of crystallinity in the Pu-238 samples after exposure to 2.8 x 1018 α decays, SPFT tests indicated that accelerated aging had not had a detrimental effect on the durability of Pu-238 samples compared to Pu-239 waste-forms.

Progress on Ongoing Waste form HIP projects at ANSTO

MRS Advances ◽  
2018 ◽  
Vol 3 (20) ◽  
pp. 1059-1064 ◽  
Author(s):  
Eric R. Vance ◽  
Dorji T. Chavara ◽  
Daniel J. Gregg
Keyword(s):  
Spent Nuclear Fuel ◽  
Technology Development ◽  
Hot Isostatic Pressing ◽  
Waste Form ◽  
Process Technology ◽  
Ceramic Waste ◽  
Waste Forms ◽  
Produce Glass ◽  
Form Development ◽  
Year 2000

Abstract:Since the year 2000, Synroc has evolved from the titanate full-ceramic waste forms developed in the late 1970s to a hot isostatic pressing (HIP) technology platform that can be applied to produce glass, glass–ceramic, and ceramic waste forms and where there are distinct advantages over vitrification in terms of, for example, waste loading and suppressing volatile losses. This paper describes recent progress on waste form development for intermediate-level wastes from 99Mo production at ANSTO, spent nuclear fuel, fluoride pyroprocessing wastes and 129I. The microstructures and aqueous dissolution results are presented where applicable. This paper provides perspective on Synroc waste forms and recent process technology development in the nuclear waste management industry.

scholarly journals A-site compositional effects in Ga-doped hollandite materials of the form BaxCsyGa2x+yTi8−2x−yO16: implications for Cs immobilization in crystalline ceramic waste forms

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Yun Xu ◽  
Yi Wen ◽  
Rob Grote ◽  
Jake Amoroso ◽  
Lindsay Shuller Nickles ◽  
...  
Keyword(s):  
Ceramic Waste ◽  
Waste Forms ◽  
Crystalline Ceramic ◽  
Compositional Effects ◽  
A Site

scholarly journals Crystalline Ceramic Waste Forms: Report Detailing Data Collection In Support Of Potential FY13 Pilot Scale Melter Test

2012 ◽  
Author(s):  
K. S. Brinkman ◽  
J. Amoroso ◽  
J. C. Marra ◽  
K. M. Fox
Keyword(s):  
Data Collection ◽  
Pilot Scale ◽  
Ceramic Waste ◽  
Waste Forms ◽  
Crystalline Ceramic

Neptunium Doping of the Crystalline Ceramic Waste Form Synroc B

1988 ◽  
Vol 3 (3) ◽  
pp. 285-288 ◽  
Author(s):  
Hj. MATZKE ◽  
E. TOSCANO ◽  
C. T. WALKER ◽  
A. G. SOLOMAH
Keyword(s):  
Waste Form ◽  
Ceramic Waste ◽  
Crystalline Ceramic

scholarly journals CRYSTALLINE CERAMIC WASTE FORMS: REFERENCE FORMULATION REPORT

2012 ◽  
Author(s):  
K. Brinkman ◽  
K. Fox ◽  
J. Marra
Keyword(s):  
Reference Formulation ◽  
Ceramic Waste ◽  
Waste Forms ◽  
Crystalline Ceramic

A Single Phase ([Nzp]) Ceramic Radioactive Waste Form

1982 ◽  
Vol 15 ◽  
Author(s):  
Rustum Roy ◽  
L.J. Yang ◽  
J. Alamo ◽  
E.R. Vance
Keyword(s):  
Radioactive Waste ◽  
Single Phase ◽  
Waste Form ◽  
Chemical Model ◽  
Crystal Chemical ◽  
Ceramic Waste ◽  
Molar Ratios ◽  
Loading Level ◽  
Waste Forms ◽  
Waste Loading

ABSTRACTIt has been shown that between 10 and 20% of a simulated PW–4b radwaste composition can be incorporated into a single nhase with the NZP (= ‘MaZr2 P3 o12’) structure. By changing the P/Na and Zr/Na molar ratios (i.e., adjusting the crystal chemical model of where each ion is located in the structure) it has been possible to outline a very ‘forgiving’ compositional regime both at the 10% and the 20% waste loading level within which one obtains one ([NZP]) or two ([NZP] and [monazite]) phases. We have also succeeded in substituting Tio2 for Zro2 in making a TiO2-rich [NTP] waste form analogous to the [NZ]] materials.Thus we have succeeded in creating monophasic and diphasic ceramic waste forms which can be sintered below 1000° C. Only preliminary leach data have been obtained at 25° and 300°C, and they place this material with good ceramic forms.

Radiation stability test on multiphase glass ceramic and crystalline ceramic waste forms

2014 ◽  
Vol 326 ◽  
pp. 293-297 ◽  
Author(s):  
Ming Tang ◽  
Anna Kossoy ◽  
Gordon Jarvinen ◽  
Jarrod Crum ◽  
Laura Turo ◽  
...  
Keyword(s):  
Glass Ceramic ◽  
Radiation Stability ◽  
Stability Test ◽  
Ceramic Waste ◽  
Waste Forms ◽  
Crystalline Ceramic

scholarly journals Synroc development—Past and present applications

2017 ◽  
Vol 4 ◽  
Author(s):  
Eric R. Vance ◽  
Dorji T. Chavara ◽  
Daniel J. Gregg
Keyword(s):  
Glass Ceramic ◽  
Intermediate Level ◽  
Waste Form ◽  
Spent Fuel ◽  
Process Technology ◽  
Technology Platform ◽  
Ceramic Waste ◽  
Waste Forms ◽  
Produce Glass ◽  
Waste Loading

ABSTRACTSynroc has evolved over the last 40 years from the titanate full-ceramics developed in the late 1970s to a technology platform that can be applied to produce glass, glass–ceramic, and ceramic waste forms and where there are distinct advantages in terms of waste loading and suppressing volatile losses.A first of a kind Synroc plant for immobilizing intermediate level waste arising from Mo-99 production is currently in detailed engineering at ANSTO.Since the year 2000, Synroc has evolved from the titanate full-ceramics developed in the late 1970s to a technology platform that can be applied to produce glass, glass–ceramic, and ceramic waste forms and where there are distinct advantages in terms of waste loading and suppressing volatile losses. Furthermore recent efforts have focused strongly on waste form development for plutonium-bearing wastes in the UK, for different options for the immobilization of Idaho calcines and most recently developing an engineered waste form for the intermediate level wastes arising from 99Mo production, for the Australian Nuclear Science and Technology Organisation (ANSTO). A variety of other studies are currently in progress, including engineered waste forms for spent fuel and investigating the proliferation risks for titanate-based waste forms containing highly enriched uranium or plutonium. This paper also attempts to give some perspective on Synroc waste forms and process technology development in the nuclear waste management industry.

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