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[en] For safe disposal of age-old legacy and unused chemicals in BARC, Trombay, oil-fired chemical incinerator with a capacity of 20 kg h"-"1 for solid and liquid chemical is installed adjacent to trash incinerator near RSMS, Gamma Field. The Incinerator was supplied by M/s B. L. Engineering Works, Ahmedabad. Commission of the same at Trombay site was carried out, under the supervision of Civil Engineering (CED), Technical Services Division (TSD) and Analytical Chemistry Division (custodian of the facility)
[en] This book deals with plan and design of waste incinerator, which includes process outline of waste, method of measure, test, analysis, combustion way and classification of incineration facilities, condition of combustion and incineration, combustion calculation and heat calculation, ventilation and flow resistivity, an old body and component materials of supplementary installation, attached device, protection of pollution of incineration ash and waste gas, deodorization, prevention of noise in incineration facility, using heat and electric heat, check order of incineration plan.
[en] Particle accelerators are an important tool for new discoveries and understanding in different principles of all branches of science and engineering. As the science is progressing, new types of techniques are discovered and journey is still going on for new innovative techniques for acceleration, mainly in achieving accelerators for high energies, high currents and so on and uses of these machines in industrial application and nuclear energy generation and waste incineration. As accelerators increase in size and complexity, demands upon their control systems increase correspondingly. Machine complexity is reflected in complexity of control system hardware and software. Same time imposing easy access and operation of the machine with higher degree of reliability and reconfigurability. Model-based procedures and fast feedback based upon even faster beam instrumentation are often required. Managing machine protection systems with hundreds or thousands of inputs is another significant challenge. Increased use of commodity hardware and software introduces new issues of security and control. (author)
[en] This news is based on the following article: Negri E., Bravi F., Catalani S., et al. Health effects of living near an incinerator: A systematic review of epidemiological studies, with focus on last generation plants Journal of Environmental Research 2020; 184: 109305. Doi: 10.1016/j.envres.2020.109305. Systematic reviews examining the health effects of pollutant emissions from waste incinerators have not yet taken into account their technological developments and huge improvements. This new study makes up for this limitation by analysing the existing data in depth and by classifying the installations into three categories, according to the year they were put into service and legal standards then in effect. It includes suggestions for better-designed and more useful studies for monitoring third-generation plants. (author)
[fr]Cette breve est tiree de l'article suivant: Negri E., Bravi F., Catalani S., et al. Health effects of living near an incinerator: A systematic review of epidemiological studies, with focus on last generation plants Journal of Environmental Research 2020; 184: 109305. Doi: 10.1016/j.envres.2020.109305. L'evolution technologique et l'enorme diminution des emissions polluantes des incinerateurs de dechets n'etaient pas prises en compte jusqu'a present dans les revues systematiques examinant leurs effets sur la sante. Cette nouvelle etude pallie cette importante limitation en analysant en profondeur les donnees existantes et en classant les installations en trois categories, selon leur periode de mise en service et les normes en vigueur. Des pistes pour conduire des etudes mieux concues et plus utiles pour la surveillance des incinerateurs de 3e generation sont proposees. (auteur)
[en] The radioactive waste incinerator which processes low level waste at the Ontario Power Generation Western Waste Management Facility has been in operation since the year 2002. The purpose of the incinerator is to safely process both solid and liquid low level waste generated by station activities. The majority of waste incinerated consists of paper, wood, plastic, rubber, cotton, and hydraulic oil. The incinerator has undergone a recent modification in the year 2015. This modification was in response to an overheating event in the underfire air duct which resulted in suspension of solid waste incineration. Underfire air duct plugging is a common challenge to many incinerators worldwide. Underfire air duct plugging leads to a reduction in combustion efficiency, additional maintenance burdens, and processing downtime. Thermal damage due to overheating can also occur if flammable material flows through the underfire air duct and burns. The modification was completed safely and successfully by OPG in conjunction with industry partners. The modification has resulted in the return to solid waste incineration as well as improved sustainable performance. The incinerator has now evolved from a controlled air design consisting of both underfire and overfire air to a controlled air design consisting of only overfire air. The paper will address lessons learned during the modification. The paper will also explore key differences between the operation of the original incinerator design and the new design. (author)
[en] Highlights: • Assessment of infectious waste management in Bangkok, in particular incineration. • Integration of social network and stakeholder analysis assessment methods. • Assessment of stakeholder characteristics, role, interaction and communication. • Interviewees self-evaluate their own characteristics and the system. • Non-technical aspects are important for system acceptability, and sustainability. - Abstract: Assessing the strengths and weaknesses of a solid waste management scheme requires an accurate analysis and integration of several determining features. In addition to the technical aspects, any such system shows a complex interaction of actors with varying stakes, decision-making power and influence, as well as a favourable or disabling environment. When capitalizing on the knowledge and experience from a specific case, it is also crucial that experts do not “forget” or underestimate the importance of such social determinants and that they are familiar with the methods and tools to assess them. Social network analysis (SNA) and stakeholder analysis (SA) methods can be successfully applied to better understand actors’ role and actions, analyse driving forces and existing coordination among stakeholders, as well as identify bottlenecks in communication which affect daily operations or strategic planning for the future way forward. SNA and SA, appropriately adjusted for a certain system, can provide a useful integration to methods by assessing other aspects to ensure a comprehensive picture of the situation. This paper describes how to integrate SNA and SA in order to survey a solid waste management system. This paper presents the results of an analysis of On-Nuch infectious waste incinerator in Bangkok, Thailand. Stakeholders were interviewed and asked to prioritize characteristics and relationships which they consider particularly important for system development and success of the scheme. In such a way, a large quantity of information about organization, communication between stakeholders and their perception about operation, environmental and health impact, and potential alternatives for the system was collected in a systematic way. The survey results suggest that stakeholders are generally satisfied with the system operation, though communication should be improved. Moreover, stakeholders should be strategically more involved in system development planning, according to their characteristics, to prevent negative reactions
[en] While the exposure assessment of polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran (PCDD/Fs) for people living in the vicinity of municipal solid waste incinerators (MSWI) has been investigated, indirect exposure to MSWI-emitted PCDD/Fs via consumption of local foods has not been well assessed. In this study, the PCDD/F concentration in the local vegetables grown near a MSWI located in Shenzhen, South China, was determined to be 0.92 ± 0.59 pg/g wet weight (ww), significantly higher than that (0.25 ± 0.35 pg/g ww) in commercial vegetables (p < 0.05). The PCDD/F concentrations in Banyan leaf (Ficus microcarpa) samples collected from 5 sampling sites at 1 km intervals from the MSWI were found to be significantly decreased with increasing distance, suggesting that the local plants would be impacted by emissions from the MSWI. The exposure assessment of PCDD/Fs for the population living in the vicinity of MSWI was carried out by simultaneously analyzing PCDD/Fs in other food groups that were commonly consumed by the residents. If only the local vegetables were consumed and other foods were acquired commercially, the total dietary intake for a general adult was 0.94 ± 0.41 pg TEQ/kg bw/day, of which consumption of local vegetables accounted for 52.3%. If all foods consumed including vegetables were from a commercial source, the total dietary intake was 0.56 ± 0.30 pg TEQ/kg bw/day, of which consumption of commercial vegetables accounted for 20.1%. The present study for the first time reported the additional human exposure to PCDD/Fs via consumption of local vegetables impacted by emissions from MSWI. - Highlights: • Indirect exposure to MSWI-emitted PCDD/Fs via consumption of local vegetables was assessed. • The PCDD/F concentration in the local vegetables grown near a MSWI was higher than that in commercial vegetables. • The PCDD/F concentrations in Banyan leaf samples were decreased with increasing distance from the MSWI. • Consumption of local vegetables predominantly contributed to the total dietary PCDD/F intake.
[en] Recursive operability analysis (ROA) is a powerful hazard evaluation method that is particularly suitable for the safety analysis of plants with multiple protection levels activated by the same process variable. The propagation of deviations of the variable along the process lines can be readily determined with this method, and hence the correct sequence in which the protection means must intervene can be appropriately followed. This paper illustrates the versatility of a ROA through its application to a 900 kg/h liquid chlorinated waste furnace. The following process variable deviations were assessed: primary air flow rate, flow rate and lower calorific power of the treated wastes and furnace temperature. It has been shown that the analysis requires a precise determination of how the variables evolve, especially when they are correlated, as is the case with the temperature and oxygen concentration. The ways in which deviations can develop in quantitative terms and the correct sequence in which the protection means must intervene are deduced from a correct study of the process thermodynamics
[en] The incineration of biomass and waste is considered to produce water steam, which then would feed the High Temperature Electrolysis (HTE) process in order to produce hydrogen. For these energy sources, in a French context, results show that water steam production cost could be in a range of 0.02 to 0.06 euros per steam kilogram. Potentially 78 million vehicles could be fed with hydrogen coming from the steam produced by the incineration of the currently non valorized biomass and domestic waste. Furthermore, for each energy source the optimized hydrogen production cost estimation has been performed, including investment and operation costs. (authors)
[en] A string of radioactive waste treatments has been built in the past decades that followed the installation of nuclear industry. They are the response for public health, protection of populations, environmental concerns and radioprotection of workers. After hesitant beginnings and groped steps, new regulations have been put in place together with the industrial infrastructure Everyday actuality shows us the rise of collective awareness for Sustainable Development, of which the nuclear industry is a powerful actor. Besides, new regulations make more dynamic the steps of management of nuclear waste. Finally, new needs are rising up with the advent of industrial age of dismantling. At crossroads of these trends, there are still some lanes for evolution after experimentation. (author)