Roger Chapman – författare

There is now an awareness within the industry, particularly as oil companies direct considerable resources towards developing diverless production systems, that a fully integrated approach to equipment design and intervention is necessary to achieve an acceptable system. The requirement for an integrated approach to equipment design and intervention is applicable not only to diverless depths but to all subsea structures, equipment and intervention techniques in whatever depth. Fortunately the inherent dexterity of the diver does not impact so severely on design as other intervention techniques. However the benefits of an integrated approach are still applicable and the use of such simple "diver aids" as cutting guides and subsea markings installed prior to the installation of jackets and subsea equipment can have a significant impact on the cost of intervention. This paper examines the requirements and limitations in designing subsea equipment for Remotely Operated Vehicle (ROV) intervention. For the oil company embarking on the development of a diverless production system, be it totally diverless because of the envisaged water depth or primarily diverless with the possibility of diver back up, the intervention techniques adopted will strongly influence the final system design. The necessity to undertake an extensive development programme to produce the optimum intervention system is very costly, requires long lead times and comprehensive testing particularly where novel solutions are adopted. It is a daunting prospect for even the most progressive of oil companies.

Olivia finds herself playing in her garden while her mummy and daddy are busy working indoors. She meets several different little creatures, including a butterfly with a very big problem. Will Olivia be able to help…….? Olivia and the Butterfly is a beautifully illustrated, calming bedtime story in rhyme for all little people who care about all the creatures, big and small, who live around and amongst us.

Hepatobiliary medicine has seen major recent scientific advances in viral hepatitis, haemochromatosis and autoimmune liver/disease helped by imaging advances in MRI and CT. This volume of some 200 cases, written by an internationally renowned author team, covers the whole spectrum of liver disease, focusing on the clinical photos, imaging, charts and graphs. The problem-oriented, randomized self-assessment format, lends itself to revision and continuing professional development.