The 12th International Conference on Environmental ... - Events
The 12th International Conference on Environmental ... - Events
The 12th International Conference on Environmental ... - Events
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Abstracts Sessi<strong>on</strong> 10-12<br />
<str<strong>on</strong>g>The</str<strong>on</strong>g> SEA aims to provide a robust assessment of the envir<strong>on</strong>mental impacts of alternative strategies for providing c<strong>on</strong>tinued<br />
capability and capacity for the management and disposal of LLW in the UK. <str<strong>on</strong>g>The</str<strong>on</strong>g> assessment also c<strong>on</strong>siders other, more tactical,<br />
issues around implementati<strong>on</strong> of the strategy, for example: issues around the locati<strong>on</strong> of LLW management facilities; the envir<strong>on</strong>mental<br />
impacts of alternative waste treatment opti<strong>on</strong>s (metal recycling etc); c<strong>on</strong>siderati<strong>on</strong>s of alternative approaches to the classificati<strong>on</strong><br />
of radioactive waste and opportunities that would result.<br />
Critical to the development of the SEA has been the involvement of statutory and n<strong>on</strong>-statutory stakeholders, who have<br />
informed both the output and the approach taken.<br />
3) THE INVENTORY OF NUCLEAR LIABILITIES — A MISSION OF PUBLIC INTEREST - 16317<br />
Christian Cosemans, Jacques Cantarella, Gerda Bal, ONDRAF/NIRAS (Belgium)<br />
<str<strong>on</strong>g>The</str<strong>on</strong>g> safe management of a countrys radioactive substances in both the short and the l<strong>on</strong>g term implies a cost to its present society<br />
and necessitates financial resources to cover these costs. Once they are needed, these financial resources may prove to be insufficient<br />
or even completely lacking, leading to a nuclear liability. By virtue of article 9 of the Belgian law of <str<strong>on</strong>g>12th</str<strong>on</strong>g> December 1997,<br />
the Belgian Government wishes to avoid the occurrence of such nuclear liabilities. This law charges ONDRAF/NIRAS, the Belgian<br />
Agency for Radioactive Waste and Enriched Fissile Materials with the missi<strong>on</strong> to draw up a register of the localisati<strong>on</strong> and the<br />
state of all nuclear sites and all sites c<strong>on</strong>taining radioactive substances, to estimate the costs of their decommissi<strong>on</strong>ing and remediati<strong>on</strong>,<br />
to evaluate the existence and adequacy of the provisi<strong>on</strong>s for financing these future or current operati<strong>on</strong>s and to update the<br />
resulting inventory of nuclear liabilities <strong>on</strong> a five-yearly basis.<br />
This paper outlines the methodology put in place by ONDRAF/NIRAS to accomplish this assignment and highlights some of<br />
the results of this exercise. It than focuses <strong>on</strong> the main recommendati<strong>on</strong>s ONDRAF/NIRAS made to the Belgian Government <strong>on</strong><br />
the field of avoiding potential nuclear liabilities.<br />
4) FINANCIAL RISKS OF POST-CLOSURE CUSTODIAL CARE FOR THE BARNWELL<br />
RADIOACTIVE WASTE DISPOSAL FACILITY - 16155<br />
Robert Baird, Washingt<strong>on</strong> Divisi<strong>on</strong>, URS Corporati<strong>on</strong> (USA);William Newberry, South Carolina Energy Office (USA)<br />
This paper reports evaluati<strong>on</strong>s of the adequacy of the Barnwell Extended Care Fund in light of identified risks, with the c<strong>on</strong>clusi<strong>on</strong><br />
that the fund is sufficient to cover the costs and uncertainties associated with planned post-closure care of the Barnwell,<br />
South Carolina low-level radioactive waste disposal facility. It reviews background informati<strong>on</strong> pertinent to the facilitys post-closure<br />
m<strong>on</strong>itoring and maintenance and describes financial resp<strong>on</strong>sibility for post-closure activities. It identifies and briefly characterizes<br />
the activities planned to be c<strong>on</strong>ducted following facility closure and presents the mid-range estimate of planned post-closure<br />
costs. <str<strong>on</strong>g>The</str<strong>on</strong>g> paper identifies and quantifies sources of uncertainty in activities and costs planned for post-closure care and presents<br />
50-, 80-, and 95-percent c<strong>on</strong>fidence levels of planned costs. <str<strong>on</strong>g>The</str<strong>on</strong>g> fund is currently sufficient to cover some but not all of the costs<br />
that might be incurred as a result of unplanned events. <str<strong>on</strong>g>The</str<strong>on</strong>g> paper identifies, characterizes, and quantifies unplanned events, possible<br />
c<strong>on</strong>sequences, and probabilities of occurrence. <str<strong>on</strong>g>The</str<strong>on</strong>g> paper presents costs that might be incurred in resp<strong>on</strong>ding to the unplanned<br />
initiating events and identifies levels of c<strong>on</strong>fidence that the fund is adequate to cover such costs.<br />
SESSION 11A - PANEL: YGN ROUNDTABLE “AN AUDIENCE WITH”...<br />
ABSTRACTS NOT REQUIRED<br />
SESSION 12 - POSTER SESSION: SPENT FUEL, FISSILE, TRU AND HLW MANAGEMENT<br />
A) SELECTIVE UPTAKE OF PALLADIUM FROM HIGH-LEVEL LIQUID WASTES BY HYBRID<br />
MICROCAPSULES ENCLOSED WITH INSOLUBLE FERROCYANIDES - 16382<br />
Hitoshi Mimura, Takashi Sakakibara, Wu Yan, Yuichi Niibori,Toyko University (Japan);<br />
Shin-ichi Koyama, Takashi Ohnishi, Japan Atomic Energy Agency (Japan)<br />
<str<strong>on</strong>g>The</str<strong>on</strong>g> fine crystalline powders of KCuFC were immobilized with alginate gel polymers by sol-gel methods. <str<strong>on</strong>g>The</str<strong>on</strong>g> uptake properties<br />
of KCuFC-microcapsules (KCuFC-MC) were examined by batch and column methods. <str<strong>on</strong>g>The</str<strong>on</strong>g> size of KCuFC-MC particle was<br />
estimated to be about 1 mm in diameter, and KCuFC powders were uniformly dispersed in KCuFC-MC particles. <str<strong>on</strong>g>The</str<strong>on</strong>g> uptake rate<br />
of Pd2+ for KCuFC-MC was attained within 3 d, and the uptake of Pd2+ was independent of the temperature and coexisting HNO3 c<strong>on</strong>centrati<strong>on</strong>. As for the breakthrough properties of Pd2+ through the column packed with KCuFC-MC, breakpoint of 5% breakthrough<br />
was enhanced with lowering of flow rate and independent of coexisting HNO3 c<strong>on</strong>centrati<strong>on</strong>. <str<strong>on</strong>g>The</str<strong>on</strong>g> Pd2+ i<strong>on</strong>s were selectively<br />
adsorbed <strong>on</strong> KCuFC crystal phase, while other metal i<strong>on</strong>s such as Ru(NO) 3+ and ZrO2+ i<strong>on</strong>s <strong>on</strong> alginate phase. High uptake<br />
percentage of 98.6 % was obtained by using the dissolved soluti<strong>on</strong>s of spent fuel from FBR-JOYO (119 GWd/t, JAEA). <str<strong>on</strong>g>The</str<strong>on</strong>g> alginate<br />
film enclosing KZnFC was further prepared by using the support of cellulose filter paper, and Pd2+ i<strong>on</strong>s were selectively<br />
adsorbed <strong>on</strong> the KZnFC-MC film. <str<strong>on</strong>g>The</str<strong>on</strong>g> alginate film enclosing insoluble ferrocyanides is expected for the selective separati<strong>on</strong> of<br />
Pd2+ as an i<strong>on</strong>-exchange filter. Thus, the microcapsules enclosing insoluble ferrocyanides are effective for the selective separati<strong>on</strong><br />
of Pd2+ from high-level liquid wastes (HLLWs).<br />
B) UPTAKE OF 14C-ACETIC ACID BY RICE PLANT AS RELATED TO ROOT FUNCTION<br />
AND MICROBIAL ACTIVITY ON THE ROOT SURFACE - 16111<br />
Shinichi Ogiyama, Nati<strong>on</strong>al Institute of Radiological Sciences(Japan); Nobuyoshi Ishii,<br />
Shigeo Uchida, Nati<strong>on</strong>al Institute of Radiological Sciences (Japan)<br />
Experiments using rice plants (Oryza sativa L.) were c<strong>on</strong>ducted to examine uptake of 14C-acetic acid via the root and 14C behavior <strong>on</strong> the root surface. For hydrop<strong>on</strong>ics, three types of rice plants were cultured with 14C-acetic acid soluti<strong>on</strong>: complete plant,<br />
half-rooted plant, and n<strong>on</strong>-rooted plant. Also, for the root incubati<strong>on</strong> experiment, sterilized root and n<strong>on</strong>-sterilized root were incubated<br />
with 14C-acetic acid soluti<strong>on</strong>. <str<strong>on</strong>g>The</str<strong>on</strong>g> 14C radioactivities in the plant parts and soluti<strong>on</strong> were measured. N<strong>on</strong>- and half-rooted<br />
plant had 14C radioactivity in their aerial part, but the complete plant did not. <str<strong>on</strong>g>The</str<strong>on</strong>g> trends of radioactivity levels in the soluti<strong>on</strong> were<br />
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