Lightweight Composite Handling Gear for British G a s A lightweight, high-modulus carbon fibre, pusher-bar has just entered service with British Gas. The pusher-bar consists of 2 x 2.5 m tubes which are slotted together and used to launch inspection vehicles (termed pigs) into onshore and offshore gas and oil pipelines. The mode of operation is similar to a ram-rod in that the pigs are pushed into the pipeline by the 5 m long bar connected to a hydraulic ram. The bars are used by the On-Line-Inspection Division (OLI) of British Gas which has developed and operates a range of very sophisticated 'intelligent' inspection pigs. These are used to inspect gas and oil pipelines for early signs of a wide range of defects including corrosion and cracking of the pipeline and welds. The pigs have the ability to travel through hundreds of kilometres of pipeline, continuously inspecting with a wide range of sensors, automatically locating and assessing defects and if necessary recording the characteristics and location. This function is carried out without significantly interrupting the operation of the pipeline and allows the gas and oil companies to plan pipeline maintenance at minimum cost and inconvenience. The pusher-bar is the first fruit of a programme of work involving a close collaboration between the engineers of
BOOKS Teaching and Applying Mathematical Modelling J. S. Berry, D. N. Burghes, L D. ttuntley, D. J. G. James and A. O. Moscardini John Wiley & Sons Ltd, May 1984, 480pp., s US $60.55, ISBN 085312728 X Mathematical modelling, as reflected in this book, follows the modern trend by encouraging students to concentrate on active, rather than passive models for practical, everyday working situations. The intention is to educate mathematics teachers taking or contemplating courses in mathematical modelling and the use of applications in mathematics. The book stems from the First International Conference on the Teaching of Mathematical Modelling, held at the University of Exeter.
Coatings and Surface Treatment for Corrosion and Wear Resistance Aq N. Stratford, P. K. Datta attd C G. Googan John Wiley, August 1984, 390pp., USS56.25/s ISBN 085312 752 2 The use of coatings and surface treatments (surface engineering) continues to improve: the corrosion and wear resistance of engineering components is a well-established and clearly recognised technology. However, development is rapid and grows in importance with the often conflicting demands for suitable physical, mechanical and chemical
OLI and Severn Consultants of Newport Pagnell, Bucks., UK. The objective being to produce lightweight structures and handling gear to reduce the handling problems involved with worldwide operations both onshore and offshore. The photograph shows the pusher-bar which has a design compression load of 9 tonnes and weighs a total of 30 kg, a weight saving of over 60% compared to a steel design. The task involved the design, procurement and proof testing so that the pusher-bar could be supplied as a turnkey product. The proof testing required the design and construction of a test machine capable of testing a 5 m long tube to 20 tonnes, in compression. The design of the bar involved the use of the laminate design programme LAMANAL which is produced by Severn Consultants and used by many composite engineering organisations in the UK, Europe and Canada.
properties of engineering materials, which are exacting and precise. This book is a timely review of the technology of coatings and surface treatments, as seen by a panel of expert and authoritative writers from the academic world, from industry, and from recognised institutes and research laboratories worldwide. The discussion is divided into three main sections: metallic and inorganic coatings; high temperature coatings; and polymeric and paint coatings. These three main subject headings reflect the wide range and scope of the chapter titles, which deal with technology and practice, investigate the science and performance of new or novel coating systems (some still at exploratory stage), and review the fundamental aspects of corrosion and/or wear performance of individual coating materials. New Technologies for the Exploration and Exploitation of Oil and Gas Resources Graham and Trotman, 1986, two volumes: 1,350pp., s (surface mail) or s (airmail) In the 1970s the European Community set up a financial support programme, designed specifically to assist technological progress in the field of hydrocarbons, which has enabled much research and development to be initiated. This report provides a complete overview of the results achieved through the implementation of this programme, and presents a detailed survey of the latest developments of advanced technologies in the fields of hydrocarbon exploration, drilling and production, seismic interpretation, enhanced oil recovery, natural gas, transportation, storage and pipelines. Copies may be obtained direct from Graham and Trotrnan Ltd, Sterling House, 66 Wilton Road, London SW1V 1DE, UK.
Applied Ocean Research, 1986, Vol. 8, No. 3
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