The Complete Critical Assembly

Filename: the-complete-critical-assembly.pdf
ISBN: 9781587153303
Release Date: 2002-10-01
Number of pages: 340
Author: David Langford
Publisher: Wildside Press LLC

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Hazards Summary Report for the APB Reflector Control Critical Assembly Experiment

Filename: hazards-summary-report-for-the-apb-reflector-control-critical-assembly-experiment.pdf
ISBN: OCLC:873864568
Release Date: 1956
Number of pages: 80
Author:
Publisher:

Download and read online Hazards Summary Report for the APB Reflector Control Critical Assembly Experiment in PDF and EPUB Critical experiments are described and the hazards attendant to these experiments are evaluated for a reflector-controlled boiling-heterogeneous-reactor design. The proposed reactor design is water moderated and reflected. However, to provide maximum flexibility and safety, the critical assembly is a thermal reactor moderated and reflected with plastic having appropriate voids to simulate water. A section of the plastic reflector is movable to represent changes in the water-reflector level. The data obtained using this reflector-controlled assembly is then supplied to an electronic reactor simulator which is connected to a full-scale mock-up of the proposed hydraulic control system. In this manner, the characteristics of the complete system are determined. The fuel-element assemblies are composed of strips of aluminum and Teflon-coated uranium sandwiched with plastic and encased in aluminum boxes. One-half of the core is on a movable table, while the other half is on a fixed table. Primary control and safety of the assembly is achieved by inserting or withdrawing sandwiched stainless steel-cadmium regulating and safety plates and by increasing or decreasing the distance between the two core halves. For safety, the maximum normal rate of reactivity addition has been limited to an estimated 0.04% per sec for control-rod withdrawal, table closure, or reflector movement. The system is interlocked so that only one rod can be withdrawn at a time and so that the movable table and rods cannot be moved simultaneously. In addition, criticality cannot be reached by moving the tables together. The scram system can insert all the rods in about 0.4 sec. Hazards calculations are made to determine the dosage from direct irradiation, fall-out, and inhalation from a radioactive cloud resulting from an accident. The exclusion area is show to be adequate for even the maximum hypothetical accident.


Critical Assembly

Filename: critical-assembly.pdf
ISBN: 0521541174
Release Date: 2004-02-12
Number of pages: 528
Author: Lillian Hoddeson
Publisher: Cambridge University Press

Download and read online Critical Assembly in PDF and EPUB This 1993 book explores how the 'critical assembly' of scientists at Los Alamos created the first atomic bombs.



The Kukla prompt critical assembly

Filename: the-kukla-prompt-critical-assembly.pdf
ISBN: UOM:39015077284589
Release Date: 1960
Number of pages: 86
Author: Eugene R. Christie
Publisher:

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Precision Assembly Technologies and Systems

Filename: precision-assembly-technologies-and-systems.pdf
ISBN: 9783642281631
Release Date: 2012-02-07
Number of pages: 212
Author: Svetan Ratchev
Publisher: Springer

Download and read online Precision Assembly Technologies and Systems in PDF and EPUB This book constitutes the refereed proceedings of the 6th IFIP WG 5.5 International Precision Assembly Seminar, IPAS 2012, held in Chamonix, France, in February 2012. The 15 revised full papers were carefully reviewed and selected from numerous submissions. The papers are organized into the following topical sections: micro processes and systems; handling and manipulation in assembly; tolerance management and error compensation methods; metrology and quality control; intelligent control of assembly systems; and process selection and modelling techniques.


Safe operation of research reactors and critical assemblies

Filename: safe-operation-of-research-reactors-and-critical-assemblies.pdf
ISBN: UOM:39015004472554
Release Date: 1984
Number of pages: 216
Author: International Atomic Energy Agency
Publisher: Intl Atomic Energy Agency

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Up Through an Empty House of Stars

Filename: up-through-an-empty-house-of-stars.pdf
ISBN: 9781592240555
Release Date: 2003-08
Number of pages: 312
Author: David Langford
Publisher: Wildside Press LLC

Download and read online Up Through an Empty House of Stars in PDF and EPUB At last, _Up Through an Empty House of Stars_ brings together the best of the never before collected SF reviews and articles that helped build David Langford's towering reputation since 1980. Complementing the review columns collected in _The Complete Critical Assembly_ and the knockabout essays and squibs in _The Silence of the Langford_, this volume's 100 glittering selections mix serious critical insight with the inimitable Langford wit. In 2002 David Langford won his sixteenth Hugo award as Best Fan Writer, for critical and humorous commentary on SF. In the same year his occasionally scandalous SF newsletter _Ansible_ won its fifth Hugo. Langford also received the 2001 Hugo for best short story, and the 2002 Skylark Award. Here he shines a unique light on classics like Ernest Bramah, G.K. Chesterton, Robert Heinlein and Jack Vance, and analyses major SF -- and major clunkers, and minor eccentrics -- of the 1980s, 1990s and early 2000s, continuing to the latest by such current stars as Gene Wolfe and China Mi, ville. Plus witty asides on crime fiction and its SF links, gleeful examination of writing so bad it's almost good, and (even at his most serious) turns of phrase to make you laugh aloud



Hazards Summary Report

Filename: hazards-summary-report.pdf
ISBN: UOM:39015086468363
Release Date:
Number of pages:
Author: William S. Hogan, David A. Dingee, Francis J. Jankowski, Joel W. Chastain
Publisher:

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Hazards Summary Report for the Reflector Control Critical Assembly Experiments

Filename: hazards-summary-report-for-the-reflector-control-critical-assembly-experiments.pdf
ISBN: OCLC:873662966
Release Date: 1957
Number of pages:
Author:
Publisher:

Download and read online Hazards Summary Report for the Reflector Control Critical Assembly Experiments in PDF and EPUB Critical experiments are described, and the hazards attpendant to these experiments are evaluated for a reflector-controllped boiling-peterogeneous- reactor design. The proposed reactor design is water moderated and reflected. However, to provide maximum flexibility and safety, the critical asspembly is a thermal reactor moderated and reflected with plastic having appropriate voids to simulate water. A spection of the plastic reflector is movable to represent changes in the waterrelector level. The data obtained using this reflectorcontrolled assembly is then suppliped to an electronic reactor simulator which is connected to a full-scale mock-up of the proposed hydraulic control system. In this manner, thpe characteristics of thpe complete system are determined. The fuel-element assemblies are composed of strips of aluminum and Teflon-coated uranium sandwiched with plastic and pecased in aluminum boxes. One- half of the core is on a movable table, while the other half is on a fixed table. Primary control and safety of the asspembly is achieved by inserting or withdrawing sandwiched stainlpess steel-cadmium rpegulating and safety plates and by increasing or decreasing the distance between the two core halves. For safety, the maximum normal rate of reactivity addition has been limited to an pestimated 0.04 per cent per sec for control-rod withdrawal, table closure, or reflector movement. The system is interlocked so that only one rod can be withdrawn at a time and so that the movale table and rods cannot be moved simultanpeously. In addition, criticality cannot be reached by moving the tables together. The scram system can inspert all thpe rods in about 0.4 spec. Hazards calculations are made to determine thpe dosage from direct irradiation, fall-out, and inhalation from a radioactive cloud resulting from an accident. The pexclusion area is shown to bpe adequate for even the maximum hypothetical accident. (auth).