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Lattice Girders for Shotcrete Support
Lattice Girders complement the use of shotcrete for underground support by reducing the risk involved with using shotcrete alone for temporary or permanent lining of a tunnel or shaft....

Recycled Roads
The movement to recycle wastes in highways appears to be gathering momentum nationwide. Rubber from old tires, wood chips, reclaimed asphalt pavement, fly ash, scrap plastic, mining wastes...

Driving Under a Construction Site
Throughout the summer of 1992, vehicles passed unimpeded through one of the most heavily traveled intersections in Los Angeles County as construction proceeded on a concrete light-rail...

Supply-Side Solutions
Although the crumbling bridge infrastructure has received much attention in the press and the engineering community over the past few years, the number of structurally deficient bridges...

What Do You Mean by That?
The engineering and construction profession, like any other, has its own buzzwords and jargon. But as terms become ingrained in the profession's lexicon, they take on different...

Motivating Technical Employees
The traditional methods of motivating employees�offers of higher pay and better perks�often fail to inspire technical employees, leaving their managers scratching their heads. But a review...

The Long Term Interim Storage of Spent AGR Fuel
This paper describes the work undertaken by Scottish Nuclear Ltd. on the proposal to construct a naturally cooled dry store for spent advanced gas cooled reactor fuel at Tornes Power Station,...

Hanford Waste Vitrification Project Overview and Status
The Hanford Waste Vitrification Project (HWVP) is being constructed at the U.S. Department of Energy's Hanford Site in Richland, Washington. The paper gives an overview of the HWVP which...

Numerical Methods for Fluid Flow in Unsaturated Heterogeneous Tuff
A numerical approach for modeling unsaturated flow is developed for heterogeneous simulations of fractured tuff generated using a geostatistical method. Cross correlations of hydrologic...

Selection of the Initial Access for the Yucca Mountain Exploratory Studies Facility
This paper describes the activities undertaken to examine relevant factors and select the initial access for the Yucca Mountain exploratory studies facility. To aid their decision, the...

Application of Monte Carlo Neutron Photon to Hanford Waste Vitrification Plant Design Analysis
The Monte Carlo Neutron Photon (MCNP) computer program ('MNCP - A General Monte Carlo Code for Neutron and Photon Transport, Version 3A') (in PC and mainframe versions) has been used for...

Installation and Routing of Critical Embedments at the Hanford Waste Vitrification Plant
During the preliminary design phase of the project, a study was conducted to develop concepts for routing embedded piping and conduit between the remote cells and the service corridors...

Glass Melter Assembly for the Hanford Waste Vitrification Plant
The Hanford Waste Vitrification Plant (HWVP) is designed to solidify high level radioactive waste by converting it into stable borosilicate glass after mixing with glass frit and water....

Is An Institute for the Study of High-Level Radioactive Waste Disposal Needed in Southern Nevada?
This paper examines key questions about the need for a formal institute that would study storage and disposal concepts for high-level radioactive waste (HLW) in the United States and throughout...

Mission Analysis of the Exploratory Studies Facility
The mission of the Exploratory Studies Facility (ESF), as interpreted from the Nuclear Waste Policy Act, can be stated succinctly as, ...to conduct subsurface exploration and testing,...

Prioritization of ESF Testing and Integration with Design and Construction
The developmental strategy for underground site characterization testing in the Exploratory Studies Facility (ESF) of the Yucca Mountain Site Characterization Program is outlined. The...

Status and Progress Monitored Retrievable Storage Project
The past year has been substantive changes within the Monitored Retrievable Storage (MRS) Project. This paper will present the status of the Project, review the progress made over the...

The Results of Near-Field Thermal and Mechanical Calculations of Thermal Loading Schemes
Two waste emplacement schemes, borehole and in-drift, are under evaluation as potential repository drift geometries for the Yucca Mountain Site Characterization Project. Calculations were...

Investigation in 3-D of Stress Distribution in a Circular Tunnel and Vertical Emplacement Holes Due to Thermal and Overburden Loading in Tuff
Thermal stress and displacement analysis using two 3-D finite element models, one having a course mesh and one having a highly detailed mesh are presented. Results are compared to those...

Code Requirement for Concrete Repository and Processing Facilities
Because of varied uses and performance/safety requirements of concrete for high, medium and low level radioactive wastes, a review of the current ACI 349 Code document was carried out...

 

 

 

 

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