Download or read book Modeling the Corrosion of High level Waste Containers written by and published by . This book was released on 1998 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: A key component of the Engineered Barrier System (EBS) being designed for containment of spent-fuel and high-level waste at the proposed geological respository at Yucca Mountain, Nevada is a two-layer canister. In this particular design, the inner barrier is made of a corrosion resistant material (CRM) such as Alloy 825, 625 or C-22, while the outer barrier is made of a corrosion-allowance material (CAM) such as A516 or Monel 400. At the present time, Alloy C-22 and A516 are favored. This publication addresses the development of models to account for corrosion of Alloy C-22 surfaces exposed directly to the Near Field Environmental (NFE), as well as to the exacerbated conditions in the CAM-CRM crevice.
Download or read book Modeling Pitting Corrosion Damage of High level Radioactive waste Containers with Emphasis on the Stochastic Approach written by G. A. Henshall and published by . This book was released on 1993 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion Models for Predictions of Performance of High level Radioactive waste Containers written by J. C. Farmer and published by . This book was released on 1991 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Corrosion Models for High level Waste Containers written by and published by . This book was released on 1998 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of Models Relevant to the Prediction of Performance of High level Radioactive waste Disposal Containers written by J. C. Farmer and published by . This book was released on 1989 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Austenitic and copper-based alloys are candidate materials for fabrication of the metal containers to be used in disposing of high-level radioactive waste at the prospective repository at Yucca Mountain, Nevada. The selection of the alloy that is best suited for this application will be based in part on predictions from models of alloy degradation under repository conditions. To help develop predictive models, we have reviewed numerous mechanisms and models in the literature that are relevant to two worst-case scenarios: container failure by localized corrosion and container failure by stress corrosion cracking. The models considered fall into the following categories: (1) initiation of pits on passive surfaces of austenitics; (2) propagation of pits on active metal surfaces; (3) propagation of pits on surfaces covered by salt films; (4) initiation of cracks at pits; (5) propagation of cracks on active metal surfaces; (7) propagation of cracks due to film-induced cleavage of the base metal; (8) crevice corrosion on active metal surfaces; and (9) crevices that behave like active-passive concentration cells.
Download or read book Stochastic Modeling of the Influence of Environment on Pitting Corrosion Damage of Radioactive waste Containers written by and published by . This book was released on 1994 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: A physically-based, phenomenological stochastic model for pit initiation and growth is presented as a potential tool for predicting the degradation of high-level radioactive-waste containers by aqueous pitting corrosion. Included in the model are simple phenomenological equations describing the dependence of the controlling stochastic parameters on the applied (or corrosion) potential, chloride ion concentration, and absolute temperature. Results from this model are presented that demonstrate its ability to simulate several important environmental effects on pitting.
Download or read book CREVICE CORROSION PITTING OF HIGH LEVEL WASTE CONTAINERS written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A key component of the Engineered Barrier System (EBS) being designed for containment of spent-fuel and high-level waste at the proposed geological repository at Yucca Mountain, Nevada is a two-layer canister. In this particular design, the inner barrier is made of a corrosion resistant material (CRM) such as Alloy 625 or C-22, while the outer barrier is made of a corrosion-allowance material (CAM) such as carbon steel or Monel 400. An integrated predictive model is being developed to account for the effects of localized environmental conditions in the CRM-CAM crevice on the initiation and propagation of pits through the CRM.
Download or read book Development of Integraded Mechanistically based Degradation mode Models for Performance Assessment of High level Waste Containers written by and published by . This book was released on 1998 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: A key component of the Engineered Barrier System (EBS) being designed for containment of spent-fuel and high-level waste at the proposed geological repository at Yucca Mountain, Nevada is a two-tayer canister. In this particular design, the inner barrier is made of a corrosion resistant material (CRM) such as Alloy 825, 625 or C-22, while the outer barrier is made of a corrosion-allowance material (CAM) such as A516 Gr 55 or Monel 400. At the present time, Alloy C- 22 and A516 Gr 55 are favored.
Download or read book Vorberichte zur Arbeitstagung ber das Problem der Neugliederung der L nder in der Bundesrepublik written by and published by . This book was released on 1950 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A numerical model for the corrosion of copper nuclear fuel waste containers written by F. King and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Probabilistic Performance Assessment Model for General Corrosion of Alloy 22 for High Level Nuclear Waste Disposal Container written by and published by . This book was released on 2003 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alloy 22 (UNS N06022) is the candidate material for the corrosion barrier of the double-wall waste package (WP) for the disposal of high-Gel nuclear waste at the proposed Yucca Mountain repository. A probabilistic temperature-dependent general corrosion model for the WP outer barrier (WPOB) was developed based on the 5-year weight-loss measurements of Alloy 22 crevice samples. The 5-year corrosion rate distribution is represented by a Weibull distribution, with scale factors = 8.88, shape factor b = 1.62, and location factor l = 0. The temperature-dependence of the general corrosion rate was modeled using an Arrhenius relation. An activation energy of 25.91 ± 2.46 kJ/mol was determined from the corrosion rates obtained from the short-term polarization resistance data for Alloy 22 specimens tested for a wide range of sample configurations, metallurgical conditions, and exposure conditions (temperature and water chemistry). Analysis of the data from the current study and the literature indicates that the activation energies of general corrosion rate of highly corrosion resistant Ni-Cr-Mo alloys including Alloy 22 are similar and do not change significantly, as the general corrosion rate decreases with the exposure time. The 5-year corrosion rates were conservatively selected for extrapolation over the repository time scale. Because of very low general corrosion rates of the WPOB for the conditions expected in the proposed repository, the WP performance will not be limited by general corrosion for the repository regulatory time period. The current conservative approach for the constant (time-independent) general corrosion rate at a given temperature provides an additional confidence for the general corrosion model.
Download or read book Studies of Corrosion Resistant Materials Being Considered for High Level Nuclear Waste Containment in Yucca Mountain Relevant Environments written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Containment of spent nuclear fuel and vitrified forms of high level nuclear waste require use of materials that are highly corrosion resistant to all of the anticipated environmental scenarios that can occur in a geological repository. Ni-Cr-Mo Alloy 22 (UNS N60622) is proposed for the corrosion resistant outer barrier of a two-layer waste package container at the potential repository site at Yucca Mountain. A range of water compositions that may contact the outer barrier is under consideration, and a testing program is underway to characterize the forms of corrosion and to quantify the corrosion rates. Results from the testing support models for long term prediction of the performance of the container. Results obtained to date indicate a very low general corrosion rate for Alloy 22 and very high resistance to all forms of localized and environmentally assisted cracking in environments tested to date.
Download or read book Corrosion Issues in High level Nuclear Waste Containers written by Samin Sharifi Asl and published by . This book was released on 2013 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion Problems Relative to Nuclear Waste written by European Federation of Corrosion No 7 and published by Woodhead Publishing Limited. This book was released on 1992-05 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Working Party on Nuclear CorrosionCovers the corrosion related problems inherent in the various concepts of waste disposal which may result from different geological conditions of the host formations. Papers investigate the importance of engineered barriers; high strength corrosion resistant candidate nuclear waste containers; disposal of heat generating radioactive wastes in rock salt; advanced corrosion studies on packaging materials for high level waste containers in rock salt; carbon steel and copper canisters and hydrogen gas generation from iron corrosion in cementitious environments.
Download or read book Mechanistic Modelling of the Corrosion Behaviour of Copper Nuclear Fuel Waste Containers written by Fraser King and published by Pinawa, Man. : Whiteshell Laboratories. This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Working Party Report on Corrosion Problems Related to Nuclear Waste Disposal written by and published by . This book was released on 1992 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
