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Title: QUARTERLY PROGRESS REPORT FOR MTR-ETR TECHNICAL BRANCHES, FIRST QUARTER, 1958

Abstract

Heat generation calculations showing a breakdown of U/sup 235/ fission energy in the MTR were completed giving 198 plus or minus 6 Mev per fission. Calculations indicate the necessary control system changes to allow MTR operation with Pu/sup 239/ as fuel. Nondestructive methods of fuel and boron analysis for ETR fuel were developed, and core measurements were made using the new "pinned" plate elements which will receive full water slow. By placing large boron content elements in the center and low content on the outside a long burnout core with fairly uniform heat generation is achieved. Transient power studies were used to demonstrate safety of the control magnet design. The regulating rod control system was studied and recommendations made for modifications to improve operation. Transfer function analysis of heat exchangers using a space dependent differential equation for the heat exchanger is being applied to a system similar to the ETR for comparison with analyses using a lumped exchanger. Out-of-pile experiments are outlined to study metal-water reactions and initial results described. Thorium irradiation calculations and U/sup 233/ build up measurements are summarized. RMF control element modifications allow direct reading to 1 x 10/sup -7/ delta k/k. Hydraulic and static testing ofmore » MTR production fuel assemblies was made giving flow vs pressure drop, maximum flow rate at failure, and deflection to static pressure. The U/sup 233/ cross section measurements are cortinuing. Total-minus-fission cross section subtractions, eta, and fission product mass asymmetries data were obtained. Preparations for gas scintillation fission countlng are in progress, and total cross sections of Nd, Sm, Gd, and Pu/sup 240 were submitted for the cross section compilation. Initial scattering measurements (10 to 150 ev) on W were made. The low energy neutron velocity selector consisting of two phased rotors is under active development, and initial experimental results using a spinning sample technique are presented. Calculatlons of the gamma-ray detection efficiencies of different shapes of NaI crystals and extended sources were completed, and a 4.7 millisecond isomer in Pb/sup 205/ was discovered. (For preceding period see IDO-16436.) (auth)« less

Authors:
Publication Date:
Research Org.:
Phillips Petroleum Co. Atomic Energy Div., Idaho Falls, Idaho
OSTI Identifier:
4293529
Report Number(s):
IDO-16474
NSA Number:
NSA-13-002551
DOE Contract Number:  
AT(10-1)-205
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
REACTORS; ADSORPTION; BORON; BURNUP; CHEMICAL REACTIONS; CHOPPERS; CONFIGURATION; CONTROL ELEMENTS; CONTROL SYSTEMS; CONVERSION; COOLANT LOOPS; CROSS SECTIONS; CRYSTAL COUNTERS; DIFFERENTIAL EQUATIONS; DISTRIBUTION; EFFICIENCY; ENERGY; ENERGY LEVELS; ENERGY RANGE; ENRICHMENT; EQUATIONS; ETR; FAILURES; FISSION; FISSION PRODUCTS; FLUID FLOW; FUEL ELEMENTS; FUELS; GADOLINIUM; GAMMA DETECTION; GAMMA SOURCES; GASES; HEAT EXCHANGERS; HEAT TRANSFER; HEATING; HYDRAULICS; IRRADIATION; ISOMERS; LEAD 205; MAGNETS; MASS; MATERIALS TESTING; MEASURED VALUES; METALS; MTR; NEODYMIUM; NEUTRON DETECTION; NEUTRON FLUX; NEUTRON SPECTROMETERS; NUMERICALS; PLANNING; PLATES

Citation Formats

Fluharty, R.G. ed. QUARTERLY PROGRESS REPORT FOR MTR-ETR TECHNICAL BRANCHES, FIRST QUARTER, 1958. United States: N. p., 1958. Web. doi:10.2172/4293529.
Fluharty, R.G. ed. QUARTERLY PROGRESS REPORT FOR MTR-ETR TECHNICAL BRANCHES, FIRST QUARTER, 1958. United States. doi:10.2172/4293529.
Fluharty, R.G. ed. Mon . "QUARTERLY PROGRESS REPORT FOR MTR-ETR TECHNICAL BRANCHES, FIRST QUARTER, 1958". United States. doi:10.2172/4293529. https://www.osti.gov/servlets/purl/4293529.
@article{osti_4293529,
title = {QUARTERLY PROGRESS REPORT FOR MTR-ETR TECHNICAL BRANCHES, FIRST QUARTER, 1958},
author = {Fluharty, R.G. ed.},
abstractNote = {Heat generation calculations showing a breakdown of U/sup 235/ fission energy in the MTR were completed giving 198 plus or minus 6 Mev per fission. Calculations indicate the necessary control system changes to allow MTR operation with Pu/sup 239/ as fuel. Nondestructive methods of fuel and boron analysis for ETR fuel were developed, and core measurements were made using the new "pinned" plate elements which will receive full water slow. By placing large boron content elements in the center and low content on the outside a long burnout core with fairly uniform heat generation is achieved. Transient power studies were used to demonstrate safety of the control magnet design. The regulating rod control system was studied and recommendations made for modifications to improve operation. Transfer function analysis of heat exchangers using a space dependent differential equation for the heat exchanger is being applied to a system similar to the ETR for comparison with analyses using a lumped exchanger. Out-of-pile experiments are outlined to study metal-water reactions and initial results described. Thorium irradiation calculations and U/sup 233/ build up measurements are summarized. RMF control element modifications allow direct reading to 1 x 10/sup -7/ delta k/k. Hydraulic and static testing of MTR production fuel assemblies was made giving flow vs pressure drop, maximum flow rate at failure, and deflection to static pressure. The U/sup 233/ cross section measurements are cortinuing. Total-minus-fission cross section subtractions, eta, and fission product mass asymmetries data were obtained. Preparations for gas scintillation fission countlng are in progress, and total cross sections of Nd, Sm, Gd, and Pu/sup 240 were submitted for the cross section compilation. Initial scattering measurements (10 to 150 ev) on W were made. The low energy neutron velocity selector consisting of two phased rotors is under active development, and initial experimental results using a spinning sample technique are presented. Calculatlons of the gamma-ray detection efficiencies of different shapes of NaI crystals and extended sources were completed, and a 4.7 millisecond isomer in Pb/sup 205/ was discovered. (For preceding period see IDO-16436.) (auth)},
doi = {10.2172/4293529},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1958},
month = {9}
}