Safety requirements specification for new safety systems in older nuclear facilities in the UK

To ensure industrial and mining safety the established safety rules for coal mines envisage the use of a number of complexes and systems, combined into multifunctional safety systems. These automated systems provide for people to be involved in the management of technological processes. The purpose of this paper is to assess how the coal mine safety requirements are aligned with other regulatory documents as they apply to modern safety systems in coal mines. To achieve this goal, the personnel location (positioning) and emergency alert systems in coal mine workings are analyzed for compliance with the requirements of the national standard for multifunctional safety systems in coal mines. It is shown that the current requirements for positioning systems are met by systems that have high accuracy in determining the location coordinates of people. It is suggested that positioning systems of the zonal type should be either upgraded to increase the number of readout devices to bring them up to the requirements of safety regulations in coal mines or replaced.

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The organisation & the costs of the decommissioning nuclear plants in the UK

ECONOMICS AND POLICY OF ENERGY AND THE ENVIRONMENT ◽

10.3280/efe2008-002005 ◽

2009 ◽

pp. 63-82

Author(s):

Steve Thomas

Keyword(s):

Key Words ◽

Nuclear Power ◽

Nuclear Fuels ◽

Nuclear Facilities ◽

Nuclear Decommissioning ◽

Nuclear Plants ◽

New Public ◽

Public Body ◽

The Uk ◽

Jel Classifications

- UK electricity consumers have paid provisions for decommissioning since before 1980 but by 2002, there were still negligible funds available to pay for decommissioning civil nuclear facilities. By then, the two major UK nuclear companies, British Energy and British Nuclear Fuels Limited (BNFL), were both effectively bankrupt. This paper examines: the pre-2002 provisions for decommissioning and how they were lost; the Nuclear Decommissioning Authority, a new public body which took over ownership of BNFL's facilities including the duty to manage their decommissioning and how it expects to carry out and fund decommissioning of its sites; how the re-launched British Energy will contribute to decommissioning its eight plants; and government plans for collecting decommissioning provisions for any new plants.JEL classifications: L50, L38, H23, H44, L71Key words: Nuclear power, decommissioning cost, funding and polluter pays.

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Research on the Trajectory Planning of Demolition Robot Attachment Changing

Sensors ◽

10.3390/s20164502 ◽

2020 ◽

Vol 20 (16) ◽

pp. 4502

Author(s):

Qian Deng ◽

Shuliang Zou ◽

Hongbin Chen ◽

Weixiong Duan

Keyword(s):

Trajectory Planning ◽

Nuclear Facilities ◽

Safety Requirements ◽

Distance Error ◽

Complex Operation ◽

Planning Algorithm ◽

Promising Application ◽

Docking Accuracy ◽

Application Prospects

The process of changing the attachment of a demolition robot is a complex operation and requires a high docking accuracy, so it is hard for operators to control this process remotely through the camera’s perspective. To solve this problem, this paper studies trajectory planning for changing a demolition robot attachment. This paper establishes a link parameter model of the demolition robot; the position and attitude of the attachment are obtained through a camera, the optimal docking point is calculated to minimize the distance error during angle alignment for attachment change, the inverse kinemics of the demolition robot are solved, the trajectory planning algorithm and visualization program are programmed, and then the trajectory planning for the demolition robot attachment changing method is proposed. The results of calculations and experiments show that the method in this paper can meet the accuracy, efficiency, and safety requirements of demolition robot attachment changing, and it has promising application prospects in the decommissioning and dismantling of nuclear facilities and other radioactive environments.

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FeedWater System Transient Analysis of Nuclear Power Station

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.347-353.1557 ◽

2011 ◽

Vol 347-353 ◽

pp. 1557-1560 ◽

Cited By ~ 1

Author(s):

Shao Bo Zhang ◽

Bi Xiong Luo ◽

Xu Bin Qiao ◽

Juan Chen ◽

Xiao Dong Wang

Keyword(s):

Nuclear Power Station ◽

Steam Generator ◽

Nuclear Power ◽

Transient Analysis ◽

Hydraulic Calculation ◽

Security Assessment ◽

Power Station ◽

Safety Requirements ◽

Safety Systems

Nuclear power station has high safety requirements, and the safety systems related to the nuclear island must be checked by hydraulic calculation. In the conventional island, the safe shutdown of the nuclear island most closely relates to the feedwater system, which determines the quantity and quality of the feedwater supply to the steam generator. In this paper, feedwater evolution in case of steamline break will be presented by using Flowmaster hydraulic software, and the results was used as the input for the analysis of security assessment in the nuclear island.

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Sellafield Decommissioning Programme: Progress Update

9th ASME International Conference on Radioactive Waste Management and Environmental Remediation: Volumes 1, 2, and 3 ◽

10.1115/icem2003-4817 ◽

2003 ◽

Author(s):

S. F. Challinor

Keyword(s):

Research And Development ◽

Fuel Cycle ◽

Step Change ◽

Nuclear Facilities ◽

Extensive Experience ◽

Strategic Direction ◽

Wide Range ◽

Uk Government ◽

The Uk

In 1999 the UK government announced a step change in the strategy for the delivery of the UK civil nuclear clean-up programme. BNFL has responded to the Governments announcement by changing the strategic direction and increasing the priority on remediation activities across the Company. BNFL has extensive experience in decommissioning nuclear facilities having undertaken remediation and decommissioning operations on BNFL sites for many years, encompassing a wide range of projects including reactors, fuel cycle plants and Research and Development facilities. This paper describes the challenges posed by, and the progress made, on some of the range of decommissioning projects undertaken on the Sellafield site as part of its decommissioning and remediation portfolio. These decommissioning operations cover a variety of redundant fuel cycle facilities ranging in size and complexity in both beta gamma and alpha contamination environments utilising manual and remote decommissioning techniques to systematically and progressively reduce the hazard on the site.

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