Vector International's high-performance clamp connector Techlok has been used for the first time on BP's Miller platform in the North Sea for the upgrade of process piping as part of the Miller gas import project.
The project involves a subsea pipeline from Brae B being incorporated into Miller calling for significant modification of topside process piping. A total of 315 hubs have been provided for the upgrade by Vector ranging in sizes from 2-16 inches and manufactured in carbon steel and 316 stainless steel.

Working at pressures from 174 to 420 bar g, joint integrity was a key requirement and using Vector's Techlok was an important selection to achieve this. Unlike an ANSI flange, Vector's connectors use metal-to-metal sealing technology to provide assured joint integrity at pressures in excess of 2,760 bar g and, correctly installed, are guaranteed not to leak.

Ian Robinson Vector International's vice president marketing and sales also points out: "Techlok clamp connectors are some 70 to 80 per cent smaller and lighter than ANSI flanges of the same pressure rating, so for topside developments like those on Miller the space and weight savings they provide are particularly valuable."

AMEC, the contractor for the project, was also impressed with the level of support and service Vector International provided. In addition to provision of hubs and connectors, Vector liaised with AMEC engineers regarding the specification, installation and testing of components to ensure that Miller received the best possible solution for the piping modifications.

" The decision to use Techlok connectors was based upon a number of factors, particularly reducing leaks and the weight savings to be made on the newly-installed piping. Moreover, given that this was a fast track project we were attracted both by the manufacturing lead times and technical support Vector could provide so helping us to meet deadlines," explains AMEC's Alan Morrison, lead piping engineer on the Miller gas import project.

Resistance to corrosion is a further feature making Techlok connectors particularly suitable for use in the North Sea, given the demanding operating conditions. The design of the connector ensures that the corrosive elements will not penetrate and compromise the sealring, so joint integrity is assured ®¢ unlike traditional ANSI designs, which can be compromised by corrosion of the gasket.