77 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Napier, B. A."  
Results: 1 - 24 next
open access

Assessment of Effectiveness of Geologic Isolation Systems: A Short Description of the AEGIS Approach

Description: To meet licensing criteria and protection standards for HLW disposal, research programs are in progress to determine acceptable waste forms, canisters, backfill materials for the repository, and geological formations. Methods must be developed to evaluate the effectiveness of the total system. To meet this need, methods are being developed to assess the long-term effectiveness of isolating nuclear wastes in geologic formations. This work was started in 1976 in the Waste Isolation Safety Assessm… more
Date: September 1, 1980
Creator: Silviera, D. J.; Harwell, M. A.; Napier, B. A.; Zellmer, J. T. & Benson, G. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Literature and Data Review for the Surface-Water Pathway: Columbia River and Adjacent Coastal Areas

Description: As part of the Hanford Environmental Dose Reconstruction Project, Pacific Northwest Laboratory reviewed literature and data on radionuclide concentrations and distribution in the water, sediment, and biota of the Columbia River and adjacent coastal areas. Over 600 documents were reviewed including Hanford reports, reports by offsite agencies, journal articles, and graduate theses. Certain radionuclide concentration data were used in preliminary estimates of individual dose for the 1964--1966 ti… more
Date: April 1, 1992
Creator: Walters, W. H.; Dirkes, R. L. & Napier, B. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparison of Environmental Radiation Doses Estimated for Hanford Operations, 1977 Through 1982

Description: Offsite environmental radiation dose equivalents based on Hanford operations are compared for the years 1977 through 1981 to those calculated for 1982. The comparison revealed a downward trend in calculated offsite doses over the period 1977 through 1982, due primarily to reported reduced effluent releases, changes in effluent reporting methods, and increased Columbia River flow over this period. The calculated doses verify the surveillance program findings that potential offsite radiation dose… more
Date: December 1, 1983
Creator: McCormack, W. D.; Carlile, J. M. V.; Peloquin, R. A. & Napier, B. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Computational Model Design Specification for Phase 1 of the Hanford Environmental Dose Reconstruction Project

Description: The objective of the Hanford Environmental Dose Reconstruction (HEDR) Project is to estimate the radiation dose that individuals could have received as a result of emission from nuclear operations at Hanford since their inception in 1944. The purpose of this report is to outline the basic algorithm and necessary computer calculations to be used to calculate radiation doses specific and hypothetical individuals in the vicinity of Hanford. The system design requirements, those things that must be… more
Date: July 1, 1991
Creator: Napier, B. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Overview of the Hanford Environmental Dose Reconstruction Project

Description: The objective of the Hanford Environmental Dose Reconstruction (HEDR) Project is to estimate the radiation doses that specific and representative individuals and populations may have received as a result of releases of radioactive materials from historical operations at the Hanford Site. These dose estimates would account for the uncertainties of information regarding facilities operations, environmental monitoring, demography, food consumption and lifestyles, and the variability of natural phe… more
Date: April 1, 1992
Creator: Shipler, D. B.; Napier, B. A. & Ikenberry, T. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

In-situ vitrification of transuranic wastes: systems evaluation and applications assessment

Description: Major advantages of in-situ vitrification (ISV) as a means of stabilizing radioactive waste are: long term durability of the waste form; cost effectiveness; safety in terms of minimizing worker and public exposure; and applicability to different kinds of soils and buried wastes. This document describes ISV technology that is available as another viable tool for in place stabilization of waste sites. The following sections correspond to the chapters in the body of this document: description of t… more
Date: September 1, 1983
Creator: Oma, K. H.; Brown, D. R.; Buelt, J. L.; FitzPatrick, V. F.; Hawley, K. A.; Mellinger, G. B. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Selection of Dominant Radionuclides for Phase 1 of the Hanford Environmental Dose Reconstruction Project

Description: The objective of the Hanford Environmental Dose Reconstruction (HEDR) Project is to estimate the radiation dose that individuals could have received as a result of emissions from nuclear operations at Hanford since their inception in 1944. A vital step in the estimation of radiation doses is the determination of the source term,'' that is, the quantities of radionuclides that were released to the environment from the various Hanford operations. Hanford operations have at various times involved … more
Date: July 1, 1991
Creator: Napier, B. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Potential radiological impacts of upper-bound operational accidents during proposed waste disposal alternatives for Hanford defense waste

Description: The Geologic Disposal Alternative, the In-Place Stabilization and Disposal Alternative, and the Reference Disposal Alternative are being evaluated for disposal of Hanford defense high-level, transuranic, and tank wastes. Environmental impacts associated with disposal of these wastes according to the alternatives listed above include potential doses to the downwind population from operation during the application of the handling and processing techniques comprising each disposal alternative. Sce… more
Date: February 1, 1986
Creator: Mishima, J.; Sutter, S. L.; Hawley, K. A.; Jenkins, C. E. & Napier, B. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DITTY - a Computer Program for Calculating Population Dose Integrated Over Ten Thousand Years

Description: The computer program DITTY (Dose Integrated Over Ten Thousand Years) was developed to determine the collective dose from long term nuclear waste disposal sites resulting from the ground-water pathways. DITTY estimates the time integral of collective dose over a ten-thousand-year period for time-variant radionuclide releases to surface waters, wells, or the atmosphere. This document includes the following information on DITTY: a description of the mathematical models, program designs, data file … more
Date: March 1, 1986
Creator: Napier, B. A.; Peloquin, R. A. & Strenge, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Relevance of biotic pathways to the long-term regulation of nuclear waste disposal. Estimation of radiation dose to man resulting from biotic transport: the BIOPORT/MAXI1 software package. Volume 5

Description: BIOPORT/MAXI1 is a collection of five computer codes designed to estimate the potential magnitude of the radiation dose to man resulting from biotic transport processes. Dose to man is calculated for ingestion of agricultural crops grown in contaminated soil, inhalation of resuspended radionuclides, and direct exposure to penetrating radiation resulting from the radionuclide concentrations established in the available soil surface by the biotic transport model. This document is designed as both… more
Date: October 1, 1985
Creator: McKenzie, D. H.; Cadwell, L. L.; Gano, K. A.; Kennedy, W. E. Jr.; Napier, B. A.; Peloquin, R. A. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Allowable Residual Contamination Levels in soil for decommissioning the Shippingport Atomic Power Station site

Description: As part of decommissioning the Shippingport Atomic Power Station, a fundamental concern is the determination of Allowable Residual Contamination Levels (ARCL) for radionuclides in the soil at the site. The ARCL method described in this report is based on a scenario/exposure-pathway analysis and compliance with an annual dose limit for unrestricted use of the land after decommissioning. In addition to naturally occurring radionuclides and fallout from weapons testing, soil contamination could po… more
Date: September 1, 1983
Creator: Kennedy, W. E., Jr.; Napier, B. A. & Soldat, J. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Parameters Used in the Environmental Pathways (DESCARTES) and Radiological Dose (CIDER) Modules of the Hanford Environmental Dose Reconstruction Integrated Codes (HEDRIC) for the Air Pathway

Description: This letter report is a description of work performed for the Hanford Environmental Dose Reconstruction (HEDR) Project. The HEDR Project was established to estimate the radiation doses to individuals resulting from releases of radionuclides from the Hanford Site since 1944. This work is being done by staff at Battelle, Pacific Northwest Laboratories (Battelle) under a contract with the Centers for Disease Control (CDC) with technical direction provided by an independent Technical Steering Panel… more
Date: September 1, 1992
Creator: Snyder, S. F.; Farris, W. T.; Napier, B. A.; Ikenberry, T. A. & Gilbert, R. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Determination of dose distributions and parameter sensitivity

Description: A series of scoping calculations has been undertaken to evaluate the absolute and relative contribution of different radionuclides and exposure pathways to doses that may have been received by individuals living in the vicinity of the Hanford site. This scoping calculation (Calculation 005) examined the contributions of numerous parameters to the uncertainty distribution of doses calculated for environmental exposures and accumulation in foods. This study builds on the work initiated in the fir… more
Date: December 1, 1992
Creator: Napier, B. A.; Farris, W. T. & Simpson, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A manual for applying the allowable residual contamination level method for decommissioning facilities on the Hanford Site

Description: This report describes the modifications that have been made to enhance the original Allowable Residual Contamination Level (ARCL) method to make it more applicable to site-specific analyses. This version considers the mixture of radionuclides present at the time of site characterization, the elapsed time after decommissioning when exposure to people could occur, and includes a calculation of the upper confidence limit of the potential dose based on sampling statistics that are developed during … more
Date: August 1, 1988
Creator: Napier, B. A.; Piepel, G. F.; Kennedy, W. E. & Schreckhise, R. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Selected Isotopic Functions: A Description and Demonstration of Their Uses

Description: Eleven selected isotopic functions useful in the safeguards verification of input accountability measurements at a reprocessing facility are described. Tables provide summaries of how various factors affect the selected isotopic functions for pressurized water reactors (PWR) and for boiling water reactors (BWR). The eleven isotopic functions shown are pairings of various combination variables of uranium and plutonium isotopics and totals. A description and explanation of these variables and fun… more
Date: October 1978
Creator: Timmerman, C. L.; Selby, G. P. & Napier, B. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

GENII (Generation II): The Hanford Environmental Radiation Dosimetry Software System: Volume 3, Code maintenance manual: Hanford Environmental Dosimetry Upgrade Project

Description: The Hanford Environmental Dosimetry Upgrade Project was undertaken to incorporate the internal dosimetry models recommended by the International Commission on Radiological Protection (ICRP) in updated versions of the environmental pathway analysis models used at Hanford. The resulting second generation of Hanford environmental dosimetry computer codes is compiled in the Hanford Environmental Dosimetry System (Generation II, or GENII). This coupled system of computer codes is intended for analys… more
Date: September 1, 1988
Creator: Napier, B. A.; Peloquin, R. A.; Strenge, D. L. & Ramsdell, J. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Determination of Radionuclides and Pathways Contributing to Cumulative Dose

Description: A series of scoping calculations has been undertaken to evaluate the absolute and relative contributions of different radionuclides and exposure pathways to doses that may have been received by individuals living in the vicinity of the Hanford Site. This scoping calculation (Calculation 004) examined the contributions of numerous radionuclides to cumulative dose via environmental exposures and accumulation in foods. Addressed in this calculation were the contributions to organ and effective dos… more
Date: December 1, 1992
Creator: Napier, B. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Developing Isotopic Functions

Description: Isotopic functions, or ratios of two isotopic variables, are used to verify Pu and U measurements of spent fuels in reprocessing plants. Systematic methods have been developed for forming and evaluating isotopic functions. This paper describes the method used at Battelle to form and evaluate isotopic functions. The data base at Battelle contains measurements and calculations for the fuel from 35 reactors. (DLC)
Date: June 1, 1978
Creator: Napier, B. A. & Timmerman, C. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Recommended environmental dose calculation methods and Hanford-specific parameters

Description: This document was developed to support the Hanford Environmental Dose overview Panel (HEDOP). The Panel is responsible for reviewing all assessments of potential doses received by humans and other biota resulting from the actual or possible environmental releases of radioactive and other hazardous materials from facilities and/or operations belonging to the US Department of Energy on the Hanford Site in south-central Washington. This document serves as a guide to be used for developing estimate… more
Date: March 1, 1993
Creator: Schreckhise, R. G.; Rhoads, K.; Napier, B. A.; Ramsdell, J. V. & Davis, J. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hanford Dose Overview Program. Comparison of AIRDOS-EPA and Hanford Site Dose Codes

Description: Radiation dose commitments for persons in the Hanford environs calculated using AIRDOS-EPA were compared with those calculated using a suite of Hanford codes: FOOD, PABLM, DACRIN, and KRONIC. Dose commitments to the population and to the maximally exposed individual (MI) based on annual releases of eight radionuclides from the N-Reactor, were calculated by these codes. Dose commitments from each pathway to the total body, lung, thyroid, and lower large intestine (LLI) are given for the populati… more
Date: November 1, 1985
Creator: Aaberg, R. L. & Napier, B. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of single-shell tank residual-liquid issues at Hanford Site, Washington

Description: This report provides an assessment of the overall effectiveness and implications of jet pumping the interstitial liquids (IL) from single-shell tanks at Hanford. The jet-pumping program, currently in progress at Hanford, involves the planned removal of IL contained in 89 of the 149 single-shell tanks and its transfer to double-shell tanks after volume reduction by evaporation. The purpose of this report is to estimate the public and worker doses associated with (1) terminating pumping immediate… more
Date: June 1, 1983
Creator: Murthy, K. S.; Stout, L. A.; Napier, B. A.; Reisenauer, A. E. & Landstrom, D. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Standardized Input for Hanford Environmental Impact Statements

Description: Models and computer programs for simulating the environmental behavior of radionuclides in the environment and the resulting radiation dose to humans have been developed over the years by the Environmental Analysis Section staff, Ecological Sciences Department at the Pacific Northwest Laboratory (PNL). Methodologies have evolved for calculating raidation doses from many exposure pathways for any type of release mechanism. Depending on the situation or process being simulated, different sets of … more
Date: May 1, 1981
Creator: Napier, B. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Determination of Radionuclides and Pathways Contributing to Dose in 1945

Description: A series of scoping calculations has been undertaken to evaluate the absolute and relative contributions of different radionuclides and exposure pathways to doses that may have been received by individuals living in the vicinity of the Hanford Site. This scoping calculation (Calculation 003) examined the contributions of numerous radionuclides to dose via environmental exposures and accumulation in foods. This study builds on the work initiated in the first scoping study of iodine in cow's milk… more
Date: December 1, 1992
Creator: Napier, B. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

GENII: The Hanford Environmental Radiation Dosimetry Software System: Volume 2, Users' Manual: Hanford Environmental Dosimetry Upgrade Project

Description: The Hanford Environmental Dosimetry Upgrade Project was undertaken to incorporate the internal dosimetry models recommended by the International Commission on Radiological Protection (ICRP) in updated versions of the environmental pathway analysis models used at Hanford. The resulting second generation of Hanford environmental dosimetry computer codes is compiled in the Hanford Environmental Dosimetry System (Generation II, or GENII). The purpose of this coupled system of computer codes is to a… more
Date: November 1, 1988
Creator: Napier, B. A.; Peloquin, R. A.; Strenge, D. L. & Ramsdell, J. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen