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An evaluation of simple iron-water radiation shields and radiation measurements within concrete-lined and -capped pits
Program 3 of Operation BREN consisted in a study of the performance of biological shields composed of various arrangements of steel, water, and borated polyethylene in spherical, cubical, and parallelepipedal geometries. Studies were also made of the radiation levels within concrete-lined and -capped pits, 4 ft in dia and 8 ft deep. The principal radiation source was the ORNL Health Physics Research Reactor, an unshielded, unreflected, 90 wt % U-10 wt % Mo, cylindrical bare-metal assembly. It was supported at heights ranging from 27 to 1500 ft by a hoist car riding outside of a 1527-ft-high steel tower. A 1200-curie Co/sup 60/ gamma-ray source, similarly supported, was substituted for the reactor for some measurements. The work reported includes measurements of fast-neutron and gamma-ray dose rates and thermal-neutron fluxes in air and within the various shields, using the reactor source, measurements of gamma-ray dose rates in air from the Co/sup 60/ gamma-ray source, and measurements of gamma-ray pulse-height spectra within the pits, also employing the Co/sup 60/ source. 8 refs., 33 figs., 29 tabs.
Date:
July 31, 1964
Creator:
Muckenthaler, F. J.; Jung, L.; Blosser, T. V.; Freestone, R. M. Jr. & Miller, J. M.
System:
The UNT Digital Library
N-Reactor shutdown for fuel rupture indications - tube 3361
The N-Reactor was shutdown on July 7, 1964, due to fuel rupture indications on tube 3361. The rupture has been confirmed as a failure in the downstream inner fuel element in tube 3361 caused by a pin hole in the weld and braze metal. This document presents a historical record of the rupture indications observed prior to and following the shutdown. The operating history of tube 3361 is compared with an adjacent tube, with no abnormal conditions observed at any time. Reactor temperature and power history since initial primary loop heatup are presented to show the total operating history experienced by N-Reactor.
Date:
July 31, 1964
Creator:
Renberger, D. L.
System:
The UNT Digital Library
An Operating Transcurium Element Radiochemistry Facility
None
Date:
July 31, 1964
Creator:
Coops, M. S.; Scribner, V. E. & Hanson, C. L.
System:
The UNT Digital Library
Epoxy Foams Resistant to High Temperatures
None
Date:
July 31, 1964
Creator:
Brown, L. E. & Harshman, J. B., Jr.
System:
The UNT Digital Library
Effect of orbital destruct of nuclear rockets on earth contamination
None
Date:
July 31, 1964
Creator:
Hargrove, H.G. & Trammell, M.R.
System:
The UNT Digital Library
Standard X-ray Diffraction Powder Patterns: Section 3. Data for 51 Substances
Report documenting standard x-ray diffraction powder patterns for various compounds, intended to replace previous data or provide information for new substances. It describes the methods and, for each substance, outlines any previous data as well as information about the sample used and structural data, with a table of diffraction patterns.
Date:
July 31, 1964
Creator:
Swanson, Howard E.; Morris, Marlene Cook; Evans, Eloise H. & Ulmer, Linda
System:
The UNT Digital Library
Acoustic Noise Tests of Accelerometers and Amplifiers
This report describes a series of acoustic noise sensitivity tests which have been run on accelerometer amplifiers. The test specimens consists of NRX-A1 type components and two additional piezoelectric accelerometers which are being considered for possible application in radiation environments.
Date:
July 31, 1964
Creator:
Loftus, W. D.
System:
The UNT Digital Library