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Water testing of the inducer pump. [LMFBR]

Description: The inducer pump, designed and fabricated as a test article to evaluate the inducer/impeller pump concept for providing improved suction performance of large sodium pumps, met or exceeded all performance goals. The inducer stage in front of the centrifugal impeller dramatically reduces the size of pumps. It was demonstrated that the inducer can operate at suction specific speeds in excess of 35,000, whereas conventional centrifugal pumps have demonstrated capability to only 12,000. The inducer … more
Date: September 15, 1977
Creator: Dunn, C. & Hoshide, R.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Beta decay properties from a statistical model

Description: The present work assumes that any intrinsic structure in the nuclei involved is not important. Only spin, parity, and energy are considered. Quantities such as half-life, average beta energy, or average gamma energy can be obtained by integrals over the beta strength function weighted by kinematic and other factors. The beta strength function is proportional to the level density multiplied by a reduced transition probability. Delayed neutron emission is calculated by assuming that the daughter … more
Date: November 1, 1981
Creator: Mann, F. M.; Dunn, C. & Schenter, R. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Biological assessment for the remedial action at the chemical plant area of the Weldon Spring site

Description: The Weldon Spring site in St.Charles County, Missouri, became contaminated during the 1940s through the 1960s as a result of explosives production by the US Army and uranium and thorium processing by the predecessor agency of the US Department of Energy (DOE). The site is listed on the National Priorities List of the US Environmental Protection Agency, and DOE is responsible for its cleanup. Contaminants are present in soil, surface water, and aquatic sediments. Alternatives identified for site… more
Date: November 1, 1992
Creator: Hlohowskyj, I. & Dunn, C. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Biological assessment for the remedial action at the chemical plant area of the Weldon Spring site

Description: The Weldon Spring site in St.Charles County, Missouri, became contaminated during the 1940s through the 1960s as a result of explosives production by the US Army and uranium and thorium processing by the predecessor agency of the US Department of Energy (DOE). The site is listed on the National Priorities List of the US Environmental Protection Agency, and DOE is responsible for its cleanup. Contaminants are present in soil, surface water, and aquatic sediments. Alternatives identified for site… more
Date: November 1, 1992
Creator: Hlohowskyj, I. & Dunn, C. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A technology to analyze spatiotemporal landscape dynamics: Application to Cadiz Township (Wisconsin)

Description: As landscape ecology has matured, it has gone beyond description of land-use changes, to examining the functional relationships between spatial patterns of landscapes and ecological processes. Attempts to describe these relationships at larger scales or in complex landscapes have been hampered by the lack of spatially explicit distributed parameter models linked dynamically to geographical information systems (GIS). This paper describes developments we have made to link such models to GIS and t… more
Date: September 1, 1993
Creator: Krummel, J. R.; Dunn, C. P.; Eckert, T. C. & Ayers, A. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Remedial investigation sampling and analysis plan for J-Field, Aberdeen Proving Ground, Maryland. Volume 1: Field Sampling Plan

Description: The Environmental Management Division (EMD) of Aberdeen Proving Ground (APG), Maryland, is conducting a remedial investigation and feasibility study (RI/FS) of the J-Field area at APG pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended. J-Field is within the Edgewood Area of APG in Harford County, Maryland (Figure 1. 1). Since World War II activities in the Edgewood Area have included the development, manufacture, testing, and destruction o… more
Date: March 1, 1995
Creator: Benioff, P.; Biang, R.; Dolak, D.; Dunn, C.; Martino, L.; Patton, T. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Remedial Investigation Work Plan for J-Field, Aberdeen Proving Ground, Maryland

Description: The purpose of an RI/FS is to characterize the nature and extent of the risks posed by contaminants present at a site and to develop and evaluate options for remedial actions. The overall objective of the RI is to provide a comprehensive evaluation of site conditions, types and quantities of contaminants present, release mechanisms and migration pathways, target populations, and risks to human health and the environment. The information developed during the RI provides the basis for the design … more
Date: March 1, 1995
Creator: Benioff, P.; Biang, R.; Dolak, D.; Dunn, C.; Haffenden, R.; Martino, L. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental site description for a Uranium Atomic Vapor Laser Isotope Separation (U-AVLIS) production plant at the Portsmouth Gaseous Diffusion Plant site

Description: Uranium enrichment in the United States has utilized a diffusion process to preferentially enrich the U-235 isotope in the uranium product. In the 1970s, the US Department of Energy (DOE) began investigating more efficient and cost-effective enrichment technologies. In January 1990, the Secretary of Energy approved a plan for the demonstration and deployment of the Uranium Atomic Vapor Laser isotope Separation (U-AVLIS) technology with the near-term goal to provide the necessary information to … more
Date: September 1, 1991
Creator: Marmer, G. J.; Dunn, C. P.; Filley, T. H.; Moeller, K. L.; Pfingston, J. M.; Policastro, A. J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental site description for a Uranium Atomic Vapor Laser Isotope Separation (U-AVLIS) production plant at the Paducah Gaseous Diffusion Plant site

Description: Uranium enrichment in the United States has utilized a diffusion process to preferentially enrich the U-235 isotope in the uranium product. The U-AVLIS process is based on electrostatic extraction of photoionized U-235 atoms from an atomic vapor stream created by electron-beam vaporization of uranium metal alloy. The U-235 atoms are ionized when precisely tuned laser light -- of appropriate power, spectral, and temporal characteristics -- illuminates the uranium vapor and selectively photoioniz… more
Date: September 1, 1991
Creator: Marmer, G. J.; Dunn, C. P.; Moeller, K. L.; Pfingston, J. M.; Policastro, A. J.; Yuen, C. R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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