Materials Literature
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Abstract A fissile package must be subjected to a fire test at 800°C for 30 min. For a package that contains enriched uranium hexafluoride (UF6), the temperature of the contents has to be kept below 121°C in order to avoid rupture of the 30B cylinder. A previous study on heat transfer mechanisms in an enriched UF6 pac…
AbstractNew flask design regulations and guidelines have been introduced which require that freedom from brittle fracture must be demonstrated. This paper presents aspects of a fracture avoidance plan to meet the new requirements. Manufacturing control, non-destructive testing and materials selection are all considere…
Abstract The German company GNB has developed, tested, licensed, fabricated and loaded a large number of casks for spent fuel and high-level waste. CASTOR® casks are used at 18 sites on three continents. Spent fuel assemblies of PWR, BWR, WER, RBMK, MTR and THTR types as well as vitrified high active waste (HAW) conta…
AbstractThe new IAEA regulations TS-R-1 (ST-1 Revised 1996) have been fully in force for all modes of transport since 1 January 2002. Specific requirements in TS-R-1 affect the transport of non-fissile and fissile excepted uranium hexafluoride (UF6). Under the auspices of the World Nuclear Transport Institute (WNTI),…
Abstract This paper covers four main topics: it gives a UK perspective on the new 2-year IAEA review/revision process; covers the regulations governing radioactive material Uansport at the international level; gives an update on the current domestic legislation in force and discusses possible harmonisation/simplificat…
AbstractThe external dose rates from spent fuel packages consist of gamma ray and neutron components. The source of gamma rays is from fission products and actinides in the spent fuel and from activation products in structural components of the fuel element. Neutrons originate from spontaneous fission in actinides (fo…
Abstract Within the decommissioning programmes of the Italian nuclear power plants, the Italian multi-utility company ENEL decided to rely on on-site dry storage while waiting for the availability of the national interim storage site. SOGIN (Societa Gestione Impianti Nucleari SpA, Rome, Italy), now in charge of all nu…
AbstractAmong the 200 spent fuel casks transported for the French utility EDF in 1997, about 37% presented problems of contamination. Contamination occured with consignments of spent fuel for Great Britain and also from Germany and Switzerland. In the absence of any real improvement by the beginning of 1998, these con…
Abstract Packages and conveyances used to transport radioactive materials can sometimes become contaminated with radioactive material that may then represent a radiation exposure risk to transport workers and members of the public. This contamination usually occurs as a result of the transfer of radioactive material f…
Abstract When decommissioning nuclear facilities, large items such as boilers or reactor pressure vessels may be reduced in size for transport to a disposal site or moved as a single, large item. The key technical and regulatory issues that need to be addressed in assessing whether to transport large items of decommis…
GigaScience reaches its first anniversary of publication, and achieves several milestones in changing how life science research is published One year on from our launch, we are unveiling new features and functionality at the Intelligent Systems for Molecular Biology (ISMB) meeting at the ICC in Berlin (pictured) this…
Cette thèse vise à comprendre l’effet des dynamiques des micelles de copolymères sur leurs propriétés rhéologiques. En effet les copolymères amphiphiles peuvent s'auto-assembler dans l’eau pour former diverses microstructures micellaires sphériques, cylindriques ou lamellaires. Leur dynamique est un paramètre crucial…
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by George Dvorak (Published by Springer, 2013)REVIEWED BY GEORGE J. WENG1During the second half of the last century, the field of solid mechanics has witnessed remarkable progress in the modeling of composite materials. This was achieved primarily through the approach of micromechanics that seeks to understand the ove…
This specification covers one width and one breaking strength of low modulus aramid tubular webbing.
process, 97, 105 agglomeration, 232-34, 237 aggregation, 164, 172 amorphous, 156, 165 anionic clays, 111-12 anodic oxidation, 134 antibacterial, 179, 182 antimicrobial effect, 121-2 antireflection (AR), 277-8, 285 algae, 97-8 amphoteric property, 286 assembly technique, 277, 280, 285 electrostatic layer-by-layer (ELbL…
This article [J. Biomed. Opt.. 18, , 061226 (2013)] was originally published online on 6 February 2013 with an error in the article’s title. The third word should be “nanorods’” instead of “nanoroad.” The corrected title appears above.
This specification covers one width and one breaking strength of low modulus aramid tubular webbing.
Following completion of the casting process (vertical direct‐chill (VDC) or horizontal direct‐chill (HDC) casting), the cast product is removed from the immediate vicinity of the casting unit to an area where all of the actions required to prepare the product for delivery to a customer may be made. The processes invol…