Download or read book Foam and Gel Decontamination Techniques written by and published by . This book was released on 1989 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Savannah River Site is investigating decontamination technology to improve current decontamination techniques, and thereby reduce radiation exposure to plant personnel, reduce uptake of radioactive material, and improve safety during decontamination and decommissioning activities. When decontamination chemicals are applied as foam and gels, the contact time and cleaning ability of the chemical increases. Foam and gel applicators apply foam or gel that adheres to the surface being decontaminated for periods ranging from fifteen minutes (foam) to infinite contact (gel). This equipment was started up in a cold environment. The desired foam and gel consistency was achieved, operators were trained in its proper maintenance and operation, and the foam and gel were applied to walls, ceilings, and hard to reach surfaces. 17 figs.
Download or read book Foam and Gel Methods for the Decontamination of Metallic Surfaces written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Decontamination of nuclear facilities is necessary to reduce the radiation field during normal operations and decommissioning of complex equipment. In this invention, we discuss gel and foam based diphosphonic acid (HEDPA) chemical solutions that are unique in that these solutions can be applied at room temperature; provide protection to the base metal for continued applications of the equipment; and reduce the final waste form production to one step. The HEDPA gels and foams are formulated with benign chemicals, including various solvents, such as ionic liquids and reducing and complexing agents such as hydroxamic acids, and formaldehyde sulfoxylate. Gel and foam based HEDPA processes allow for decontamination of difficult to reach surfaces that are unmanageable with traditional aqueous process methods. Also, the gel and foam components are optimized to maximize the dissolution rate and assist in the chemical transformation of the gel and foam to a stable waste form.
Download or read book Developments in Surface Contamination and Cleaning Applications of Cleaning Techniques written by Rajiv Kohli and published by Elsevier. This book was released on 2018-11-27 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developments in Surface Contamination and Cleaning: Applications of Cleaning Techniques, Volume Eleven, part of the Developments in Surface Contamination and Cleaning series, provides a guide to recent advances in the application of cleaning techniques for the removal of surface contamination in various industries, such as aerospace, automotive, biomedical, defense, energy, manufacturing, microelectronics, optics and xerography. The material in this new edition compiles cleaning applications into one easy reference that has been fully updated to incorporate new applications and techniques. Taken as a whole, the series forms a unique reference for professionals and academics working in the area of surface contamination and cleaning. Presents the latest reviewed technical information on precision cleaning applications as written by established experts in the field Provides a single source on the applications of innovative precision cleaning techniques for a wide variety of industries Serves as a guide to the selection of precision cleaning techniques for specific applications
Download or read book Handbook of Radioactive Contamination and Decontamination written by Jan Severa and published by Elsevier. This book was released on 1991-12-04 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this book is to present a comprehensive picture, first of the fundamentals of general contamination of solid surfaces and water, and in the second part, to review the main practical procedures and means of applied decontamination used in the fields of activity. The most emphasis on radioactive contamination deals with decontamination of the operational facilities in nuclear power plants. Other special decontamination branches of current interest are also dealt with briefly.The art of decontamination is being enriched by the progress achieved in relevant scientific disciplines and employs these relative advances. The current volume discusses in detail the following trends in decontamination: Firstly, the development and use of new decontamination methods that are highly efficient, non-agressive to decontaminated materials, and economically feasible; secondly, the utilization of progressive elements of automation and robotics; thirdly, the development and use of such decontamination formulations that would minimize the volume of wastes and would produce wastes in a form in which they could be either easily further treated or safely disposed of without risk to human health or the environment; finally, the choice of suitable materials used both for the structural and the technological parts of nuclear installations with regard to their minimal contaminability and ease of decontamination.
Download or read book A Survey of Decontamination Processes Applicable to DOE Nuclear Facilities written by and published by . This book was released on 1997 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this survey was to select an appropriate technology for in situ decontamination of equipment interiors as part of the decommissioning of U.S. Department of Energy nuclear facilities. This selection depends on knowledge of existing chemical decontamination methods. This report provides an up-to-date review of chemical decontamination methods. According to available information, aqueous systems are probably the most universally used method for decontaminating and cleaning metal surfaces. We have subdivided the technologies, on the basis of the types of chemical solvents, into acid, alkaline permanganate, highly oxidizing, peroxide, and miscellaneous systems. Two miscellaneous chemical decontamination methods (electrochemical processes and foam and gel systems) are also described. A concise technical description of various processes is given, and the report also outlines technical considerations in the choice of technologies, including decontamination effectiveness, waste handing, fields of application, and the advantages and limitations in application. On the basis of this survey, six processes were identified for further evaluation. 144 refs., 2 tabs.
Download or read book Foam Technology as a Decontamination written by and published by . This book was released on 1993 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foam decontamination technology is being developed at the Savannah River Site (SRS) as a waste minimization tool. Experience with foam decontamination technology has shown a significant waste reduction of up to 70% over current decontamination methods. Foam allows decontamination of a wide variety of surface geometries with a minimum of waste. Current decontamination practice at SRS for the removal of surface contamination on metal walls and complex parts is to spray repeated applications of decon solutions on the wall or part. As the solution runs off any vertical surface, contact time is minimal, requiring a large volume of the solution to complete the task. The process is labor intensive and often takes place in an area where a radiation field exits. In addition, there is the potential for exposure to contamination and exposure to the decon solution. Decon solutions with a foaming agent can be applied in a thin layer to a surface in any orientation, even to overhead surfaces. The decon solution is held within the foam, increasing dwell time, productivity, safety, and reducing personnel exposure.
Download or read book The Canning of Fish and Meat written by R.J. Footitt and published by Springer Science & Business Media. This book was released on 1994-04-30 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: '...aimed at the technical person (and) also a good basic book for undergraduate students...' - Food Technology New Zealand' - '...especially useful for food technologists and others in the industry or training for it.' - Food Australia
Download or read book Chitosan Based Hybrid Nanomaterials written by Nisar Al and published by Elsevier. This book was released on 2024-03-04 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chitosan-based hybrid nanomaterials for environmental remediation focuses on chitosan, an abundantly occurring biopolymer, to present possibilities for the removal of contaminants and a greener approach towards a cleaner environment – combining nanotechnology with the deployment of naturally occurring materials to remedy environmental challenges. This book fills up research gaps, and the knowledge lagging in the context of chitosan-based nanomaterials. Considering the importance of naturally occurring materials with the applied knowledge of nanotechnology in the field of environmental restoration Covers properties, synthesis, and characterization of chitosan nanostructures and their utilization in the removal of contaminants Highlights the latest developments on the utilization of chitosan in environmental restoration Summarizes the importance of chitosan nanostructures for several applications
Download or read book Guide for Decontaminating Buildings Structures and Equipment at Superfund Sites written by and published by . This book was released on 1985 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reopening Public Facilities After a Biological Attack written by National Research Council and published by National Academies Press. This book was released on 2005-08-18 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anthrax attacks in fall 2001 spurred an extensive and costly decontamination effort where many decisions had to be made about which sites required cleanup, what method to use, how to determine the effectiveness of the cleanup, and how "clean" the building had to be for reoccupation. As part of a project funded by the U.S. Department of Homeland Security (DHS), and managed by Lawrence Livermore National Laboratory, the National Research Council was asked to consider the criteria that must be met for a cleanup to be declared successful, allowing the reoccupation of a facility. The report finds that efficiently sampling and characterizing a pathogen is critical for choosing the best remediation strategy. However, there should be no universal standard for deciding when a building is safe to re-enter because varying pathogen amounts and characteristics could require different strategies. The report offers a flowchart for decision-makers that includes questions about the characteristics of the pathogen; how far it has spread; whether it is transmissible between humans; and how long it will survive to pose a threat. The report also recommends that a risk-assessment approach be adopted as part of a strategy for achieving a "socially acceptable" standard for cleanup.
Download or read book Management of Radioactive Waste written by Jean-Claude Amiard and published by John Wiley & Sons. This book was released on 2021-10-26 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: The classification of radioactive waste varies from state to state. This results in different management procedures for each country, while following IAEA and OECD/NEA recommendations. Radioactive waste comes from numerous sources. The largest volumes are generated by the decommissioning and dismantling of nuclear facilities. Long-lived, medium- and high-activity waste – categorized as the most hazardous types of waste – are in fact largely produced by nuclear power reactors, spent fuel reprocessing plants and nuclear accidents. Final disposal of very low-activity, low-activity and very short-lived waste is well controlled. However, final solutions for certain categories, including long-lived waste, sorted waste and spent graphite waste, are not yet in place. Management of Radioactive Waste reviews all the possible solutions and presents those chosen by the various states, including a chapter detailing policy on radioactive waste management, taking France as an example.
Download or read book Radioactive Waste Management written by and published by . This book was released on 1990 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Long Lasting Decontamination Foam written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Compositions and methods for decontaminating surfaces are disclosed. More specifically, compositions and methods for decontamination using a composition capable of generating a long lasting foam are disclosed. Compositions may include a surfactant and gelatin and have a pH of less than about 6. Such compositions may further include affinity-shifting chemicals. Methods may include decontaminating a contaminated surface with a composition or a foam that may include a surfactant and gelatin and have a pH of less than about 6.
Download or read book Foams and Emulsions written by J.F. Sadoc and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: A general and introductory survey of foams, emulsions and cellular materials. Foams and emulsions are illustrations of some fundamental concepts in statistical thermodynamics, rheology, elasticity and the physics and chemistry of divided media and interfaces. They also give rise to some of the most beautiful geometrical shapes and tilings, ordered or disordered. The chapters are grouped into sections having fairly loose boundaries. Each chapter is intelligible alone, but cross referencing means that the few concepts that may not be familiar to the reader can be found in other chapters in the book. Audience: Research students, researchers and teachers in physics, physical chemistry, materials science, mechanical engineering and geometry.
Download or read book Nuclear Decommissioning written by Michele Laraia and published by Elsevier. This book was released on 2012-02-21 with total page 857 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once a nuclear installation has reached the end of its safe and economical operational lifetime, the need for its decommissioning arises. Different strategies can be employed for nuclear decommissioning, based on the evaluation of particular hazards and their attendant risks, as well as on the analysis of costs of clean-up and waste management. This allows for decommissioning either soon after permanent shutdown, or perhaps a long time later, the latter course allowing for radioactivity levels to drop in any activated or contaminated components. It is crucial for clear processes and best practices to be applied in decommissioning such installations and sites, particular where any significant health and environmental risks exist. This book critically reviews the nuclear decommissioning processes and technologies applicable to nuclear power plants and other civilian nuclear facilities. Part one focuses on the fundamental planning issues in starting a nuclear decommissioning process, from principles and safety regulations, to financing and project management. Part two covers the execution phase of nuclear decommissioning projects, detailing processes and technologies such as dismantling, decontamination, and radioactive waste management, as well as environmental remediation, site clearance and reuse. Finally, part three details international experience in the decommissioning of nuclear applications, including the main nuclear reactor types and nuclear fuel cycle facilities, as well as small nuclear facilities and legacy nuclear waste sites. Critically reviews nuclear decommissioning processes and technologies applicable to nuclear power plants and other civilian nuclear facilities Discusses the fundamental planning issues in starting a nuclear decommissioning process Considers the execution phase of nuclear decommissioning projects, including dismantling, decontamination, and radioactive waste management, as well as environmental remediation, site clearance and reuse
Download or read book Essentials of Food Sanitation written by Norman G. Marriott and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Aspen Food Science Text Series Book. All of the essential information that you have come to rely on in the widely-acclaimed 'Principles of Food Sanitation' by Norman G. Marriott is now available to you in a simplified, practical, and updated format. Providing a step-by-step, hands-on approach, this incomparable text offers useful and interesting information on food sanitation at all stages of food processing and food service and stresses how important the role of each employee is at each stage. Essentials of Food Sanitation covers a wide variety of topics from cleaning and sanitizing compounds, systems and equipment to food sanitation in various types of food processing such as dairy products, seafood, meat and poultry, etc. Each chapter provides food handlers and students with interesting real-life reports of recent food sanitation problems plus different techniques to ensure firm understanding of the subject, including: visual aides; a comprehensive glossary; several summaries, study questions; references; chapter bibliographies; a resource section on how to learn more about the topic; and case studies. A thorough discussion of HACCP and how a HACCP system relates to quality assurance and sanitation functions is also outlined in the text. Furthermore, expanded material on foodservice, including the methods and principles for sanitary food handling and considerations at various control points inthe flow of foodservice is provided.
Download or read book GAO Report on the Department of Energy National Laboratory Management written by United States. Congress. House. Committee on Science. Subcommittee on Basic Research and published by . This book was released on 2000 with total page 1116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
