Concentrations and Toxic Implications of Dioxin‐Like PCBs in Soil Samples from Electrical Power Stations in Lagos, Nigeria

Author(s):  
Bilikis T. Folarin ◽  
Mohamed Abdallah ◽  
Temilola O. Oluseyi ◽  
Stuart Harrad ◽  
Kehinde O. Olayinka

From the first self-sustaining nuclear reaction to the present day represents a span of three decades: within that time large-scale generation of electrical power from nuclear energy has become acknowledged as economic, safe and environmentally acceptable. Within the U .K . 10% of electricity consumed is of nuclear origin. Some of the C.E.G.B. reactors have been in service for over 10 years. The operating experience that has been gained shows how the original design concepts have been ultimately developed. Some of the difficulties encountered and the engineering solutions are presented. Operating experience feeds back to the design philosophy and safety requirements for future nuclear plant. In this way a foundation is provided for the further exploitation of what must become a major source of energy in the next decade.


1980 ◽  
Vol 13 (6) ◽  
pp. 409-415 ◽  
Author(s):  
E. Welfonder ◽  
A. Lampert ◽  
F. Heilemann

2007 ◽  
Vol 15 (4) ◽  
pp. 213-234 ◽  
Author(s):  
A. Stephen McGough ◽  
Asif Akram ◽  
Li Guo ◽  
Marko Krznaric ◽  
Luke Dickens ◽  
...  

The over-arching aim of Grid computing is to move computational resources from individual institutions where they can only be used for in-house work, to a more open vision of vast online ubiquitous `virtual computational' resources which support individuals and collaborative projects. A major step towards realizing this vision is the provision of instrumentation – such as telescopes, accelerators or electrical power stations – as Grid resources, and the tools to manage these resources online. The GRIDCC project attempts to satisfy these requirements by providing the following four co-dependent components; a flexible wrapper for publishing instruments as Grid resources; workflow support for the orchestration of multiple Grid resources in a timely manner; the machinery to make reservation agreements on Grid resources; and the facility to satisfy quality of service (QoS) requirements on elements within workflows. In this paper we detail the set of services developed as part of the GRIDCC project to provide the last three of these components. We provide a detailed architecture for these services along with experimental results from load testing experiments. These services are currently deployed as a test-bed at a number of institutions across Europe, and are poised to provide a 'virtual lab' to production level applications.


Author(s):  
Andrew Morris ◽  
John Dear ◽  
Miltiadis Kourmpetis ◽  
Alexander Fergusson ◽  
Amit Puri

Digital Speckle Photogrammetry (DSP) is proving to be a very useful technique for studying, in the laboratory, the distribution of strain about cracks and other defects in stressed specimens. This non-contact technique is able to resolve strain gradients over a small physical area, for example across a weld heat affected zone. The technique has good potential for use as a condition monitoring tool for a variety of components in electrical power stations. In addition this measurement technique could also be applied to monitor the integrity of critical components of newer generation plant, such as wind turbine generator blades. There are, however, many installation problems to be overcome. For example, there is the need to have regard for the hostile environment in steam generating plant and the demanding conditions to which wind turbine blades are subjected. Ideally the outputs from individual DSP sensors would be used for continuous remote monitoring. However, DSP measurements can also be useful each time the plant is shut down during a plant outage; which would be used to complement data from existing proven rugged monitoring methods. This paper describes ongoing work to develop a ruggedised digital speckle ‘sensor’ and associated image capture system.


Author(s):  
Kenneth J. Turner ◽  
Paul Lambert ◽  
K. L. Tan ◽  
Vernon Gayle ◽  
Richard O. Sinnott ◽  
...  

Grid computing is named by analogy with the electrical power grid. Power stations are linked into a universal supply that delivers electricity on demand to consumers. Similarly, computational resources can be linked into a grid that delivers computing or data on demand to the user’s desktop. The origins of grid computing lie in networked computing, distributed computing, and parallel computing. Grid computing coordinates distributed resources that are not subject to central control, using standard protocols and interfaces to meet the required levels of service (Foster, 2002).


Author(s):  
Konstantin Kim ◽  
Mikhail Gerasimov ◽  
Aleksandr Smirnov

Objective: To improve traffic safety, reduce the environmental impact and to save electricity by using the energy of river flows to supply river bridges with power. Methods: A renewable and quite cost- effective source of electric energy can be obtained by using small hydroelectric power stations (GES). A project on installation of small submersible GES on the bridge footings over the Neva River in Saint Petersburg is described in the given article. Results: The powers of hydraulic turbines for each bridge were calculated based on their energy consumption and the number of possible turbine installation places. Practical importance: It is supposed to give generated electric power to the traction network of electric transport or to accumulate it in storages providing power supply of a nearby infrastructure at any time. In addition, strengthening of the present distribution network within the city by means of the additional sources of electricity will be provided.


Author(s):  
O. M. Ghita ◽  
S. D. Grigorescu ◽  
H. Andrei ◽  
N. Calin

Abstract The advance in the field of augmented reality (AR) allows newer approaches to traditional activities, such as service, maintenance or intervention in various field operations. The idea of this paper is to present the design for an innovative AR platform which is currently under development and is designed to be used in Electrical Power Stations. Field data from sensors and additional information stored in QR tags placed on equipment’s are transmitted to a server and from here to the AR equipment’s carried by the intervention personnel. In this case, real time data can be displayed, enhancing the perception of team members and providing additional info that can help them to fulfill their mission.


1998 ◽  
Vol 120 (4) ◽  
pp. 722-727
Author(s):  
Pradeep Kumar ◽  
J. L. Gaindhar ◽  
Suresh Holi

Energy is important for modern civilization and the electrical power from thermal stations is a major source of energy on which hinges the functioning and growth of mankind. In almost all major countries of the world thermal power stations are getting bigger and are generating huge quantities of flyash as a waste from their mammoth boilers. Despite extensive research on flyash, its utilization level is still low although it is considered as a novel and useful material in various fields such as building and road construction, agriculture, refractory works, water treatment, foundry, etc. In the present work flyash has been used as an additive to the silica sand in the V-process molds and its effects on the surface finish and total solidification time of the Al-11%Si alloy castings have been studied. Results indicate that the surface finish of the castings improves by the addition of flyash. Total solidification time of the castings reduces when the flyash has been added beyond 25 percent.


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