scholarly journals ANNUAL REPORT, SPRING 2015: IDENTIFYING COST EFFECTIVE TANK WASTE CHARACTERIZATION APPROACHES

2015 ◽  
Author(s):  
S. Reboul ◽  
R. Young ◽  
F. Smith ◽  
J. Pareizs ◽  
D. Diprete
Keyword(s):  
Annual Report ◽  
Cost Effective ◽  
Waste Characterization ◽  
Tank Waste

scholarly journals Single Shell Tank Waste Characterization Project for Tank B-110, Core 9 - data package and PNL validation summary report

1990 ◽  
Author(s):  
K.N. Pool ◽  
T.E. Jones ◽  
S.G. McKinley ◽  
J.M. Tingey ◽  
T.M. Longaker ◽  
...  
Keyword(s):  
Summary Report ◽  
Waste Characterization ◽  
Single Shell ◽  
Tank Waste

Technetium Getters to Improve Cast Stone Performance

2015 ◽  
Vol 1744 ◽  
pp. 43-52
Author(s):  
James J. Neeway ◽  
Amanda R. Lawter ◽  
R. Jeffrey Serne ◽  
R. Matthew Asmussen ◽  
Nikolla P. Qafoku
Keyword(s):  
Waste Treatment ◽  
Ph Effect ◽  
Cost Effective ◽  
Effluent Treatment ◽  
Waste Form ◽  
Hanford Site ◽  
Cast Stone ◽  
Waste Cleanup ◽  
Effective Manner ◽  
Tank Waste

ABSTRACTA cementitious waste form known as Cast Stone is the baseline waste form for solidification of aqueous secondary wastes, including Hanford Tank Waste Treatment and Immobilization Plant (WTP) secondary liquid effluents to be treated and solidified at the Hanford Site Effluent Treatment Facility. Cast Stone is also being evaluated as a possible supplemental immobilization technology to provide the necessary low activity waste (LAW) treatment capacity to complete the Hanford tank waste cleanup mission in a timely and cost effective manner. Two radionuclides of particular concern in these waste streams are technetium-99 (99Tc) and iodine-129 (129I). These radioactive tank waste components are predicted to contribute the most risk to groundwater – the most probable pathway for future environmental impacts associated with the cleanup of the Hanford site. A recent environmental assessment of Cast Stone performance, which assumes a diffusion controlled release of contaminants from the waste form, calculates groundwater in excess of the allowable maximum permissible concentrations for both contaminants. There is, therefore, a need and an opportunity to improve the retention of both 99Tc and 129I in Cast Stone. One method to improve the performance of Cast Stone is through the addition of “getters” that selectively sequester Tc and I, therefore reducing their diffusion out of Cast Stone. In this paper, we present results of Tc and I removal from solution with various getters. Batch sorption experiments were conducted with deionized water (DIW) and a highly caustic LAW simulant with a 7.8 M average Na concentration. In general, the data show that the selected getters are effective in DIW but their performance is compromised when experiments are performed with the 7.8 M Na Ave LAW simulant. The diminished performance in the LAW simulant may be due to competition with Cr present in the 7.8 M Na Ave LAW simulant and to a pH effect that may create a negatively charged surface that can repel negatively charged species.

scholarly journals Dissemination of annual report information on the internet by South African companies

2003 ◽  
Vol 6 (4) ◽  
pp. 765-784
Author(s):  
F Naudé ◽  
A Du Toit
Keyword(s):  
South African ◽  
Annual Report ◽  
Cost Effective ◽  
Business Environment ◽  
Annual Reports ◽  
The Internet ◽  
Corporate Website ◽  
Corporate Websites ◽  
Current State ◽  
The Relationship

The Internet is a cost-effective and efficient way of distributing information to  all stakeholders in a transparent, globalised business environment. The aim of  this study was to determine the current state and level of adoption of the Internet  as a delivery and communication mechanism for disseminating online/digital  annual reports in the largest listed companies in South Africa. The population  selected for the survey was the 2001 Financial Mail top 300 (SA Giants)  companies. The research was conducted by analysing the corporate websites of  the selected companies, to establish the existence of a corporate website and  whether the full annual report was available electronically. The study also  investigated the relationship between digital annual reports and company  characteristics. The investigation revealed that those companies with websites  and digital annual reports are profitable companies.

Cost‐Effective Solid‐Waste Characterization Methodology

1993 ◽  
Vol 119 (4) ◽  
pp. 631-644 ◽  
Author(s):  
Alan E. Gay ◽  
Thomas G. Beam ◽  
Brian W. Mar
Keyword(s):  
Solid Waste ◽  
Cost Effective ◽  
Waste Characterization

Australian states and Northern Territory acreage update at APPEA 2008

2008 ◽  
Vol 48 (1) ◽  
pp. 381
Author(s):  
Bill Tinapple
Keyword(s):  
Coastal Waters ◽  
Geothermal Energy ◽  
Annual Report ◽  
Cost Effective ◽  
Northern Territory ◽  
State Governments ◽  
Land Access ◽  
Australian State ◽  
Seismic Acquisition ◽  
Data Provision

This is the annual presentation of what’s happening in onshore and coastal waters exploration in Australia’s states and the Northern Territory. The main focus of these jurisdictions’ annual report at the APPEA conference is upstream petroleum acreage opportunities. Exploration for geothermal energy resources will also be covered. There are many and diverse exploration opportunities in onshore frontier and producing Australian basins available for explorers in 2008, including geothermal energy exploration opportunities. The number of onshore Australian acreage applications has been steadily increasing in recent years and this has resulted in higher levels of drilling and seismic acquisition, but large areas remain untouched by modern exploration. Australian state governments continue initiatives to encourage exploration to realise their natural resource endowments including: pre-competitive basin studies; speedy and cost-effective provision of digital exploration data; provision of effective land access regimes; transparent regulatory regimes; internationally competitive royalty regimes; and, promotion of acreage releases nationally and internationally.

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