Download and read online The Complete Critical Assembly in PDF and EPUB
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 The system is interlocked so that only one rod can be withdrawn at a time and so that the movable table and rods cannot be moved simultaneously.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.
Download and read online Addendum to Hazards Summary Report for the GCRE Critical assembly Experiments in PDF and EPUB
Download and read online The fast critical assembly in PDF and EPUB
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.
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Download and read online Critical Assembly and Preliminary Operation of the Water Boiler Neutron Source in PDF and EPUB
Download and read online Hazards Summary Report in PDF and EPUB
Download and read online Ultra High Temperature Reactor Critical Experiment UCX Safety Analysis Report in PDF and EPUB
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
Download and read online The Works of Lord Macaulay Complete Critical and historical essays Biographies Indian penal code Contributions to Knight s quarterly magazine in PDF and EPUB
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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.