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Newcastle upon Tyne, United Kingdom

Sari A.,Atkins Boreas
Process Safety Progress

Vapor cloud explosions (VCEs) cause considerable problems in the chemical and petrochemical industries. They generate damaging levels of overpressure and the possibility of human injury/death, and building/equipment damage. Predicting the possible consequences of VCEs is important to ensure the safe design of existing and new structures. Prediction of the overpressures resulting from a VCE is typically done using simplified (empirical) models, phenomenological models, and computational fluid dynamics models. The focus of this article is on two of the most frequently used simplified prediction methods: TNO multienergy and Baker-Strehlow-Tang models. These models are compared in terms of structural response and vulnerability of damage caused by an explosion. © 2010 American Institute of Chemical Engineers. Source

Scopes D.,Atkins Boreas
Dams and Reservoirs

The market town of Louth (in Lincolnshire), on the River Lud, has suffered from flooding on many occasions, most recently in 2007. Atkins was commissioned to conduct a feasibility study into the potential for a flood defence scheme. This paper begins once the preferred option of two online flood storage areas had been identified; the brief from this point was to develop their outline design. Atkins worked closely with a contractor to develop a cost estimate for the works and to ensure buildability was considered. The two dams are designed as homogenous earth fill embankments, with heights of circa 6m, and retaining a combined volume of 213 000 m3 (during a flood event); both storage areas fall under the requirements of the Reservoirs Act 1975. As in many cases, these reservoirs present particular challenges; designed to be empty for the majority of their life, they are required to meet the needs of a variety of stakeholders. The design was further complicated by the risk of unexploded ordnance and burrowing animals. This paper presents the outline design under three sections: the location, embankments and control structures. For each section the paper discusses the alternatives considered, the selection process and the adopted design. © 2015, ICE Publishing. All rights reserved. Source

This paper recommends that the reliability, obsolescence and integrity management processes related to subsea fields should be integrated into a single process, here termed 'life cycle management', because they all treat in a similar way with the same systems, the overall aim being to maintain system integrity and availability throughout field life. This paper asserts that all three processes should commence early in the design phase of a project and be carried through to decommissioning. It also discusses failure modes, effects and criticality analysis (FMECA) which, it is proposed, should be developed into an integrated system in support of life cycle management, reflecting the root causes of failure as a means of identifying effective and measurable mitigation activities. Source

Morshed A.,Atkins Boreas
Materials Performance

Many corrosion failures observed in the oil industry are caused by factors unrelated to corrosion engineering, such as inadequate inspections, documentation, communication, and procedures. An evolved corrosion management defnition, along with the introduction of the "integrity management measure," ofers a more practical and comprehensive integrity management approach. Te results are an improved integrity management system and optimization of the associated costs. Source

Gardner M.,Atkins Boreas
Water and Environment Journal

This paper reviews the approaches used to deal with the interpretation of measurements reported as 'less than' a stated reporting limit. The principal current methodologies are examined and their shortcomings discussed. Recent key papers on the subject are summarised. It is concluded that lack of easy-to-use alternative methods have led to the continued use of substitution methods that are acknowledged to be biased. With the aim of promoting a more technically sound approach to dealing with 'less than' data, a supplementary spreadsheet tool is supplied to provide the reader with ready introductory access to a simple way to apply maximum likelihood methods. Recommendations and simple guidelines for better practice are provided. © 2011 The Author. Water and Environment Journal © 2011 CIWEM.. Source

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