نتایج جستجو برای: heavy water reactor

تعداد نتایج: 690374  

Journal: :Nuclear Technology 2021

During the Second World War, Canada made several important contributions to wartime nuclear research efforts. The three main were: establishing a domestic laboratory in Montreal investigate heavy water reactor; creating supply chains provide uranium oxide, water, and polonium Manhattan Project; direct of Canadians living United States project. These efforts helped establish legacy that has pers...

2012
T. Subramani S. Krishnan P. K. Kumaresan P. Selvam

In India, Pulp & paper industries have been large uses of portable water and consequently large generator of waste water. Anaerobic treatment of paper processing waste water has a distinct advantage of recovery of inherent energy in the form of methane gas with much less sludge production. A hybrid reactor that capitalizes on the positive features of anaerobic filter(AF) and up-flow anaerobic s...

2000
J. Abeln M. Kluth G. Petrich H. Schmieder

SuperCritical Water Oxidation (SCWO) process is investigated at the Institut of Technical Chemistry, ITC-CPV. The objectives were to determine destruction efficiencies of model compounds and industrial waste effluents and to study the feasability of the SCWO process. Two continuous SCWO bench scale plants are operated: a pipe reactor and a transpiring wall reactor system (design data: T = 630 °...

2001
V. I. Tretyak

Experimental data on the number of neutrons born in the heavy water targets of the large neutrino detectors are used to set the limit on the proton lifetime independently on decay mode through the reaction d → n+?. The best up-to-date limit τ p > 4×10 23 yr with 95% C.L. is derived from the measurements with D 2 O target (mass 267 kg) installed near the Bugey reactor. This value can be improved...

Journal: :Physical review letters 2008
B Aharmim S N Ahmed J F Amsbaugh A E Anthony J Banar N Barros E W Beier A Bellerive B Beltran M Bergevin S D Biller K Boudjemline M G Boulay T J Bowles M C Browne T V Bullard T H Burritt B Cai Y D Chan D Chauhan M Chen B T Cleveland G A Cox-Mobrand C A Currat X Dai H Deng J Detwiler M DiMarco P J Doe G Doucas P-L Drouin C A Duba F A Duncan M Dunford E D Earle S R Elliott H C Evans G T Ewan J Farine H Fergani F Fleurot R J Ford J A Formaggio M M Fowler N Gagnon J V Germani A Goldschmidt J T M Goon K Graham E Guillian S Habib R L Hahn A L Hallin E D Hallman A A Hamian G C Harper P J Harvey R Hazama K M Heeger W J Heintzelman J Heise R L Helmer R Henning A Hime C Howard M A Howe M Huang P Jagam B Jamieson N A Jelley K J Keeter J R Klein L L Kormos M Kos A Krüger C Kraus C B Krauss T Kutter C C M Kyba R Lange J Law I T Lawson K T Lesko J R Leslie J C Loach R MacLellan S Majerus H B Mak J Maneira R Martin K McBryde N McCauley A B McDonald S McGee C Mifflin G G Miller M L Miller B Monreal J Monroe B Morissette A Myers B G Nickel A J Noble N S Oblath H M O'Keeffe R W Ollerhead G D Orebi Gann S M Oser R A Ott S J M Peeters A W P Poon G Prior S D Reitzner K Rielage B C Robertson R G H Robertson E Rollin M H Schwendener J A Secrest S R Seibert O Simard J J Simpson L Sinclair P Skensved M W E Smith T D Steiger L C Stonehill G Tesić P M Thornewell N Tolich T Tsui C D Tunnell T Van Wechel R Van Berg B A VanDevender C J Virtue T J Walker B L Wall D Waller H Wan Chan Tseung J Wendland N West J B Wilhelmy J F Wilkerson J R Wilson J M Wouters A Wright M Yeh F Zhang K Zuber

The Sudbury Neutrino Observatory (SNO) used an array of 3He proportional counters to measure the rate of neutral-current interactions in heavy water and precisely determined the total active (nu_x) 8B solar neutrino flux. This technique is independent of previous methods employed by SNO. The total flux is found to be 5.54_-0.31;+0.33(stat)-0.34+0.36(syst)x10(6) cm(-2) s(-1), in agreement with p...

2001
H. Takano

In this study, the mass flow in double-strata nuclear fuel cycle is analysed based on mass inventory balance model, and the cost evaluation is carried out. As the commercial reactor fuel cycle, which is assumed to be sustainable in a significantly long term, the following different reactors and fuel cycles are considered: (1) Scheme of light water reactor (LWR-UOX and -MOX) based on sea water u...

2012
Saptarshi Das Shantanu Das Amitava Gupta

—Bulk reduction of reactor power within a small finite time interval under abnormal conditions is referred to as step-back. In this paper, a 500MWe Canadian Deuterium Uranium (CANDU) type Pressurized Heavy Water Reactor (PHWR) is modeled using few variants of Least Square Estimator (LSE) from practical test data under a control rod drop scenario in order to design a control system to achieve a ...

2004
Yong-Moo Cheong Sang-Soo Kim Dong-Hoon Lee Hyun-Kyu Jung Young H. Kim

The feeder pipe in the pressurized heavy water reactor (PHWR) is exposed to a possible leakage during operation. Because of the geometrical complexity of the pipe and its inaccessibility due to a high radiation environment, it is difficult to examine the defect by the conventional ultrasonic method. The guided ultrasonic inspection was chosen for the inspection of the pipe. The torsional mode h...

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