scholarly journals Waste isolation safety assessment program. Controlled sample program publication number 2: interlaboratory comparison of batch Kd values

1979 ◽  
Author(s):  
J.F. Relyea ◽  
R.J. Serne
Keyword(s):  
Safety Assessment ◽  
Interlaboratory Comparison ◽  
Assessment Program ◽  
Publication Number ◽  
Kd Values

scholarly journals Waste Isolation Safety Assessment Program. Technical progress report for FY-1978

1979 ◽  
Author(s):  
A. Brandstetter ◽  
M.A. Harwell ◽  
B.W. Howes ◽  
G.L. Benson ◽  
D.J. Bradley ◽  
...  
Keyword(s):  
Technical Progress ◽  
Safety Assessment ◽  
Progress Report ◽  
Assessment Program

Post-Earthquake Building Safety Inspection: Lessons from the Canterbury, New Zealand, Earthquakes

2013 ◽  
Vol 29 (3) ◽  
pp. 1091-1107 ◽  
Author(s):  
Justin D. Marshall ◽  
Kishor Jaiswal ◽  
Nathan Gould ◽  
Fred Turner ◽  
Bret Lizundia ◽  
...  
Keyword(s):  
New Zealand ◽  
Safety Assessment ◽  
The United States ◽  
Structural Safety ◽  
Assessment Program ◽  
Future Earthquake ◽  
Canterbury Earthquake Sequence ◽  
Building Safety ◽  
Key Aspects ◽  
The City

The authors discuss some of the unique aspects and lessons of the New Zealand post-earthquake building safety inspection program that was implemented following the Canterbury earthquake sequence of 2010–2011. The post-event safety assessment program was one of the largest and longest programs undertaken in recent times anywhere in the world. The effort engaged hundreds of engineering professionals throughout the country, and also sought expertise from outside, to perform post-earthquake structural safety inspections of more than 100,000 buildings in the city of Christchurch and the surrounding suburbs. While the building safety inspection procedure implemented was analogous to the ATC 20 program in the United States, many modifications were proposed and implemented in order to assess the large number of buildings that were subjected to strong and variable shaking during a period of two years. This note discusses some of the key aspects of the post-earthquake building safety inspection program and summarizes important lessons that can improve future earthquake response.

Formation of Secondary Minerals and Uptake of Various Anions Under Naturally-Occurring Hyperalkaline Conditions in Oman

2009 ◽  
Author(s):  
Sohtaro Anraku ◽  
Kazuya Morimoto ◽  
Tsutomu Sato ◽  
Tetsuro Yoneda
Keyword(s):  
River Water ◽  
Safety Assessment ◽  
Spring Water ◽  
Pore Fluid ◽  
Secondary Minerals ◽  
Mixing Ratios ◽  
Natural Minerals ◽  
Naturally Occurring ◽  
Kd Values ◽  
Water Ph

In Japanese transuranic (TRU) waste disposal facilities, 129I is the most important key nuclide for the long-term safety assessment. Thus, the Kd values of I to natural minerals are important factor in the safety assessment. However, the degradation of cement materials in the repositories can produce high pH pore fluid which can affect the anion transport behavior. Therefore, it is necessary to understand the behavior of anions such as I− under the hyperalkaline conditions. The natural hyperalkaline spring water (pH>11) in the Oman ophiolite is known to be generated from the partly serpentinized peridotites. The spring water is characteristically hyperalkaline, reducing, low-Mg, Si and HCO3−, and high-Ca, while the river water is moderately alkaline, oxidizing, high-Mg and HCO3−. The mixing of these spring and river water resulted in the formation of secondary minerals. In the present study, the naturally occurring hyperalkaline conditions near the springs in Oman were used as natural analogue for the interaction between cement pore fluid and natural Mg-HCO3− groundwater. The present aim of this paper is to examine the conditions of secondary mineral formation and the anion uptake capacity of these mineral in this system. Water and precipitate samples were collected from the different locations around the spring vent to identify the effect of mixing ratios between spring and river water on mineral composition and water-mineral distribution coefficient of various anions. On-site synthesis was also carried out to support these data quantitatively. Aragonite was observed in all precipitates, while calcite, brucite and Mg-Al hydrotalcite-like compounds (HTlc) were also determined in some samples. Calcite was observed only closed to the springs. At locations far from the springs, calcite formation was inhibited due to high-Mg fluid from river water. Brucite was observed from the springs with relatively low-Al concentration and HTlc was the opposite. During the formation of the minerals at the mixing points, HCO3- in the river water was fixed as carbonate minerals such as in aragonite and calcite while H3SiO4− in the river water was dominantly fixed into interlayers and surfaces of HTlc. Iodine in spring and river water was mainly fixed in aragonite. Therefore, the uptake I− by secondary minerals can be expected at hyperalkaline conditions as observed at Oman hyperalkaline springs.

Crash and safety assessment program for paratransit buses

2009 ◽  
Vol 36 (2) ◽  
pp. 235-242 ◽  
Author(s):  
Leslaw Kwasniewski ◽  
Cezary Bojanowski ◽  
Jeff Siervogel ◽  
Jerry W. Wekezer ◽  
Krzysztof Cichocki
Keyword(s):  
Safety Assessment ◽  
Assessment Program

scholarly journals Waste isolation safety assessment program. Technical progress report for FY-77

1979 ◽  
Author(s):  
H.C. Burkholder ◽  
J. Greenborg ◽  
J.A. Stottlemyre ◽  
D.J. Bradley ◽  
J.R. Raymond ◽  
...  
Keyword(s):  
Technical Progress ◽  
Safety Assessment ◽  
Progress Report ◽  
Assessment Program
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