contamination uranium

 

The uranium contamination on the surfaces of the finished fuel plates should then be less than 0.6 ppm U / sup 235/ . This investigation also revealed that the solubility limit of uranium in aluminum at 600 deg C is approx 60 ppm. (auth). Trouvé à l'intérieur – Page 21In this classic environmental justice story , we see how long native peoples have been burdened with inhumane levels of contamination and we see how long it ... Trouvé à l'intérieur – Page 40... Industries * and the Climax Uranium Company , * and has been confirmed by more recent studies at this laboratory . 4 Since the ammonium precipitation method , without the handicap of phosphate contamination , might have advantages in ... Trouvé à l'intérieur – Page 147Is There Significant Correlation Between Alpha Surface Contamination and Air Concentration of Radioactive Particles in a Uranium Feed Materials Plant ? Trouvé à l'intérieur – Page 70Sub - basin contamination is due to uranium ( 90 % ) and radium ( 10 % ) radionuclides . The uranium in the community appears to be naturally occurring and the same as levels found in other geologically similar areas . The Department's ... Trouvé à l'intérieur – Page 841In this study , the long - lived radionuclides uranium - 238 ( 238U ) and thorium - 232 ( 232Th ) were measured in order to evaluate the extent of contamination from mining / milling facilities . 232Th was quantified simultaneously and served as ... Trouvé à l'intérieur – Page 24Current efforts are being directed toward determining whether contamination occurs during the coating operation or is due to the spreading of uranium from the core onto the coating when the particles in metallographic mounts are sectioned ... Trouvé à l'intérieur – Page 4The degree of uranium removal from the knees and seats of the coveralls was evaluated in this test , these being the points of greatest contamination . Trouvé à l'intérieur – Page 282Uranium Uranium , considered as a contaminant , results mainly from the production of nuclear weapons and reactor fuel . Uranium contamination at sites separating the element from the ore is substantial . When fissionable uranium ( 235U ) ... Trouvé à l'intérieur – Page 108URANIUM 8 . 1 . 1 . Introduction For obvious reasons the radiological implications of uranium mining and milling are well established , and in most of the countries concerned some form of regulatory control exists . Therefore , there is no need ... Trouvé à l'intérieur – Page 19... 16, 32 Sales abroad, 6:16 Stockpile, 35:13 See also Atomic radiation, waste disposal—Storage underground, Groundwater contamination Uranium industry Federal jurisdiction, Hamm commission report, 8:9 Health hazards Elliot Lake, Ont., ... Trouvé à l'intérieur – Page xxvThe deterEither type of hazard may be present in the absence of mination of alpha or soft beta contamination ( e . g . uranium , the other ( e . g . there is no contamination hazard associated tritium ) is done by the bio - assay of urine , faeces ... Trouvé à l'intérieur – Page 203Contamination with recent carbon 0 10 20 30 40 50 60 70 80 90 100 .'l -. I .'1 1 ... Dating problems generally result from migration of uranium after initial deposition or contamination with thorium in detrital material at the time of deposition. Trouvé à l'intérieur – Page 9Uranium is highly reactive towards most substances , particularly at elevated temperatures , and contamination by the atmosphere or by reaction with containers occurs readily unless adequate precautions are taken . Liners of inert materials ... Trouvé à l'intérieur – Page 83Some depleted uranium has also been released in the past by a burning operation but was no more than a few percent of ... Some depleted uranium contamination exists on the soil adjacent to the burning pad but the highest levels are about ... Trouvé à l'intérieur – Page 27CONTAMINATION WITH URANIUM FROM NATURAL AND ANTROPOLOGICAL SOURCES PETER TODOROV TODOROV , tribiani ... One of the most common radionuclides is Uranium ( U ) . U with atomic number of 92 is the heaviest known ... Trouvé à l'intérieur – Page 123( 1 ) Where a place , vehicle or premises becomes radioactively contaminated , the person who knowingly had the prescribed substance that caused the contamination in 10 his possession at the time the contamination occurred is liable ... Trouvé à l'intérieurOn analysait des échantillons de terre et d ' eau recueillis sur l ' ensemble du site et autour du site pour mesurer la contamination éventuelle à l ' uranium 5 . Bien évidemment , les résultats des contrôles et analyses n ' ont pas été mis dans le ... Trouvé à l'intérieur – Page 89Sulfate migrates at nearly the same rate as the ground - water flow and is the most reliable indicator of the maximum extent of contamination . Uranium ... Trouvé à l'intérieur – Page 13Disposal of wastes is thus a significant problem to be resolved in the future mining of uranium ores . ... There has been , in addition , some contamination of stream waters with radium - 226 , selenium , and vanadium - - to the extent that water ... Trouvé à l'intérieur – Page 379Après détermination de la densité et de la polygonalité , on mesure la contamination superficielle en uranium des couches d'enrobages , en dissolvant cet uranium par de l'acide nitrique dilué et chaud et en calculant le rapport en % de la ... Trouvé à l'intérieur – Page 107Review of contamination uranium and thorium in environmental and some problem of the radioecology South Russia . It is shown that the most suitable analytical methods from these purposes is the instrumental nuclear methods : gamma ... Trouvé à l'intérieur – Page 160Conclusion . compensée par la croissance de l'ionium ; elle nécessiterait donc , pour une même différence entre les âges calculés et réels , une contamination plus forte . Supposons que l'uranium des échantillons de Rejiche soit la somme ... Trouvé à l'intérieurFor this reason the method is extremely susceptible to variations caused by contamination with uranium ( " salting ” ) . High and variable blanks , and erratic results generally , are symptomatic of this condition . It can be corrected by scrupulous ... Trouvé à l'intérieur – Page 108Usually, a 230Th/232Th ratio of greater than about 20 is considered sign that there has been no contamination. The uranium concentrations and 234U/"3SU activity ratios are similar in both fossil bone samples (M-l and M-4). The calculated ... Trouvé à l'intérieur – Page 1Statistical Analysis of Uranium - Mill Raffinate Contamination in Water Wells in Lincoln Park , South - Central Colorado River River DENVER EXPLANATION ... Trouvé à l'intérieur – Page 16Flathead Reservation Fort Belknap Reservation Uranium mine contamination . Chemical pollution from gold mining adjacent to the WASHIN reservation . Jlcarilla Apache Reservation Oil and chemicals from oil drilling operations . Valerie ... This book provides recent developments and comprehensive knowledge to the researchers and academicians who are working on uranium contaminated areas worldwide. Trouvé à l'intérieur – Page 89Sulfate migrates at nearly the same rate as the ground - water flow and is the most reliable indicator of the maximum extent of contamination . Uranium ... Trouvé à l'intérieur – Page 6Cependant , pour les composés solubles de l'uranium , en raison de la toxicité chimique , la quantité inhalée en un jour ne doit ... Dans le cas de contamination interne exceptionnelle concertée : 1 ° La quantité de radio - éléments inhalée ou ... Trouvé à l'intérieurIt is also useful for evaluating contamination and ingestion hazards . ... of the long - term consequences ( and a similar quantity of of radiological contamination uranium - 235 ) were released can be underestimated . into the environment . Trouvé à l'intérieur – Page 510Beryllia tionship . was attacked 20 times faster by a cerium alloy than The contamination by zirconium in similar experi - by pure uranium . Data on these experiments are too ments was below the limit of analytical detection . fragmentary to ... Trouvé à l'intérieur – Page 6At the outset uranium was extracted with a mixture of ethylacetate - acetone followed by a second extraction using ... Repeated blank runs with a Pb206 spike indicated that the total common lead contamination of a typical pitchblende analysis ... Trouvé à l'intérieur – Page 296HANFORD RESERVATION ; DRINKING WATER / contamination ; URANIUM / trace amounts ; amounts ; RADIATION MONITORING ; CONTAMINATION ; SURVEYS ; HEALTH HAZARDS ... Trouvé à l'intérieur – Page 385ETUDE EXPERIMENTALE DE LA FIXATION RENALE APRES CONTAMINATION AIGUE PAR L ' URANIUM Influence de la solubilité des composés utilisés : UOŽ , UO3 , U308 C . PASQUIER , M . BOURGUIGNON CEA , Département de ... Therefore an international workshop was organized in Lisbon from 11 to 13 February 2004 as a forum for the exchange of views and experiences of countries with smaller scale uranium mining legacies. Trouvé à l'intérieur – Page 185The most dangerous source of contamination lies in tailings ponds , and here the amount of air - gamma dose exceeds 10 mSv / y ( 1 . 1 microSv / h ) . 82 The same study found high uranium contamination in the areas around the tailings pond ... Trouvé à l'intérieur – Page 90N. Grossman, S. Pnceman (XE) June 68 Criticality of normal-water natural-uranium lattices. R. Persson Oct. 26 Estimating radioactivity of irradiated uranium. R. Koontx, A. Jarrett June 26 Estimating radium and uranium surface contamination. Trouvé à l'intérieur – Page 19In future tests , the requirement for additional equipment being located downstream of the uranium rf plasma test ... is provided in APPENDIX A. Another important aspect of the research being conducted is in the area of contamination .