15 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Richardson, D."  
Results: 1 - 15
open access

Sympathetic detonation. [VRO]

Description: The results of a combined experimental and theoretical study of sympathetic detonation of VRO propellant are summarized. The extent of sympathetic reaction has been determined experimentally for different sizes and shapes of propellant. The experiments have been modeled numerically using the LASL reactive hydrodynamic code 2DE with Forest Fire burn rates. The critical separation distance for high-order detonation has been calculated for the cylindrical equivalents of 1-, 2-, and 3-inch cubes, a… more
Date: January 1, 1979
Creator: Bowman, A.L. & Richardson, D.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Recent research on themochemical hydrogen production at the Oak Ridge National Laboratory. [Co/Co(Ba) and Cu/Cu(Ba,F) cycles]

Description: Continuing efforts on the identification and determination of chemical feasibility of thermochemical cycles for the production of hydrogen from water have recently resulted in two new cycles. The reactions involved have been demonstrated experimentally. One cycle consists of essentially three reactions: (1) the oxidation of Co(II), as CoO, by barium hydroxide to a compound containing barium and Co(II,IV) while evolving hydrogen, (2) the hydrolysis of the compound to Ba(OH)/sub 2/, which is wate… more
Date: unknown
Creator: Bamberger, C. E. & Richardson, D. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Plutonium/High-Level Vitrified Waste Bdbe Dose Calculation

Description: In accordance with the Nuclear Waste Policy Amendments Act of 1987, Yucca Mountain was designated as the site to be investigated as a potential repository for the disposal of high-level radioactive waste. The Yucca Mountain site is an undeveloped area located on the southwestern edge of the Nevada Test Site (NTS), about 100 miles northwest of Las Vegas. The site currently lacks rail service or an existing right-of-way. If the Yucca Mountain site is found suitable for the repository, rail servic… more
Date: March 19, 2003
Creator: Richardson, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SUMMARY OF HRE-2 RUN 13 (INITIAL POWER OPERATION)

Description: The first power operation of the HRE-2, referred to as Run 13, occurred in February 1958. In five days of power operation, the maximum sustained power was 1.5 Mw and the total power generated was 4B Mw-hr. During the first part of the power operation, the fuel solution contained very little internal recombination catalyst. This part of the run was characterized by high concentrations of radiolytic gas and significant loss of reactivity at very low powers. After an addition of copper and acid, r… more
Date: October 29, 1958
Creator: Engel, J.R.; Haubenreich, P.N.; Hernandez-Fragoso, J. & Richardson, D.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiological/toxicological sabotage assessments at the Savannah River Site

Description: This paper describes the methods being employed by Westinghouse Savannah River Company (WSRC) to perform graded assessments of radiological and toxicological sabotage vulnerability at Savannah River Site (SRS) facilities. These assessments are conducted to ensure that effective measures are in place to prevent, mitigate, and respond to a potential sabotage event which may cause an airborne release of radiological/toxicological material, causing an adverse effect on the health and safety of empl… more
Date: November 1, 1995
Creator: Johnson, H.D.; Pascal, M.D. & Richardson, D.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

SUMMARY OF HRT RUNS 22, 23 AND 24

Description: In runs 22, 23, and 24 the HRT was operated with downward flow through the core at powers up to 5 Mw. Because of leakage past the lower core tank patch, uranium could not be prevented from entering tbe blanket, so the concentration was deliberately kept above 1 g U/kg D/sub 2/O. The core power was about 0.6 of the total. Nuclear power fluctuations were larger than with upward core flow, and the cause was investigated intensively in run 22 at powers up to 1.8 Mw. Run 22 was terminated after 778 … more
Date: March 1, 1962
Creator: Bauman, H.F.; Buchanan, J.R.; Engel, J.R.; Haubenreich, P.N. & Richardson, D.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summary of HRT Run 14

Description: A detailed study of HRT Run 14, which was abruptly terminated by the formation of a hole in the Zircaloy-2 core tank is presented. In this run the reactor was operated at high temperature and pressure for ten days from March 25 to April 4, 1958. Nuclear power operation extended from March 29 until April 4, when fuel solution leaked into the heavy-water blanket. The maximum power level attained was 6.4 Mw. The reactor equipment performance was satisfactory, except for the core vessel, but the nu… more
Date: June 1, 1959
Creator: Engel, J. R.; Haubenreich, P. N.; Kolb, J. O. & Richardson, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Relocatable Assembly System for the I.B.M. 1620 Computer

Description: The indirect addressing feature of the I.B.M.1620 computer has been used to overcome the difficulty of cross—referencing separately assembled subroutines within a computer programme. A relocatable assembler has been devised which permits the separate assembly and testing of such subroutines. The concept of a "next subroutine" has been introduced, and its applications to interpretive systems such as Fortran shown.
Date: April 1962
Creator: Richardson, D.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summary of HRT Run 25

Description: Run 25 was the final period of power operational of the HRT. The reactor was operated for periods of 62, 8, 52, and 80 hours at 5 Mw with no outward indication of fuel and core and blanket average temperatures of 270 and 230 deg C, respectively. The uranium concentration in the was 1.7 to 2.0 g U/kg D/sub 2/O. Longer periods of operation were prevented by mechanical difficulties, notably with the fuel feed pump. While the reactor was subcritical after the last of the above runs, the upper patch… more
Date: July 25, 1962
Creator: Engel, J. R.; Bauman, H. F.; Buchanan, J. R.; Haubenreich, P. N.; Piper, H. B. & Richardson, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A successful waste stream analysis on a large construction project in a radiologically controlled facility

Description: The Los Alamos National Laboratory (the Laboratory) Chemistry and Metallurgy Research (CMR) Facility, constructed in 1952, is currently under going a major, multi-year demolition and construction project. Many of the operations required under this project (i.e., design, demolition, decontamination, construction, and waste management) mimic the processes required of a large scale decontamination and decommissioning (D and D) job and are identical to the requirements of any of several upgrades pr… more
Date: December 1, 1997
Creator: Kennicott, M.; Durrer, R.; Richardson, D. & Starke, T.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

SUMMARY OF HRT RUN 21

Description: The HRT was operated experimentally during run 2l at powers up to 5 Mw to explore the limiting conditions of fuel stability and to demonstrate the reliability of the system. The effect of core pressure on fuel stability was investigated over the range from l250 to 1750 psig. Stable operation at 5 Mw (2.6 Mw in the core) was demonstrated at 1250 psig. At 1600 and 1750 psig, fuel instability accompanied by rapid loss of reactivity occurred at powers down to 2.5 Mw. The threshold power for reactiv… more
Date: October 10, 1961
Creator: Haubenreich, P.N.; Bauman, H.F.; Bradley, N.C.; Engel, J.R.; Kolb, J.O.; Piper, H.B. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summary of HRT Run 14

Description: This report presents a detailed study of HRT Run 14, which was abruptly terminated by the formation of a hole in the Zircaloy-2 core tank. In this run the reactor was operated at high temperature and pressure for ten days from March 25 to April 4, 1958. Nuclear power operation extended from March 29 until April 4, when fuel solution leaked into the heavy-water blanket. The maximum power level attained was 6.4 Mw.
Date: June 8, 1959
Creator: Engel, J. R.; Haubenreich, P. N.; Kolb, J. O. & Richardson, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen