Connectors & Sealing Technologies. Taper-Lok Offshore & Subsea. Engineered to Last Leak-Free Service

Transcription

1 Connectors & Sealing Technologies Taper-Lok Offshore & Subsea Engineered to Last Leak-Free Service

2 Engineered to Last Leak-Free Service Taper-Lok connectors, designed for subsea applications, are supplied with additional features that aid divers and provide additional diver safety during the installation process. The benefits of these additional features significantly decrease the time and cost required to install a Taper-Lok connection as compared to standard ANSI, RTJ, or API connections. Taper-Lok connections are used in: Offshore and Subsea Top Side Spool Tie-ins Production Risers Manifolds Onshore Injection Systems Flow Lines Well Stream Manifolds Well Heads Pipeline Transmission / Distribution Petroleum Refining Synthetic Fuels Production Numerous Others Design Flexibility, Leak-Free AFGlobal has an outstanding record in offshore and subsea applications. Taper-Lok connections provide unequaled design flexibility and have been designed in nominal pipe sizes ranging from 0.5 to 82, with pressures up to 40,000 psi, and temperatures ranging from 350 F to 1,600 F. 2

3 AFGlobal Service Commitment Our clients deserve a service commitment that does not end with installation. AFGlobal not only provides complete product training, installation and field repair instructions, but also project management support, product design and design calculations all while guaranteeing leak-free service for the life of your connector. Some Taper-Lok connectors have been in operation more than 40 years with combined leak-free service of over 200 million hours without failure. Benefits of Using a Taper-Lok Flange Connection in Your Offshore or Subsea Application: Leak-free performances, 100% leak-free sealing technology. Taper-Lok connections are 60% to 70% lighter than the conventional flanges in most sizes and pressure ratings. Axial misalignment capabilities allow for a shorter assembly time of manifolds, risers and spools. Taper-Lok connections have lower bolt pre-load requirements than standard connections. The Taper-Lok compact design reduces space and weight. The seal ring geometry allows the gasket to be pre-installed on one side of the flange before deployment. Taper-Lok flanges are designed for external, dynamic and fatigue loads. Modifications for external, annulus pressure testing available. 3

4 Swivel Flange Assemblies with Ball Bearing Races Swivel Flange Assemblies are comprised of a female weld neck flange, seal ring, male fitting, rotating ring flange and a complete set of studs and nuts (Figure A, right). All Taper-Lok Swivel Flanges 12 in diameter and larger are provided with ball bearing races machined into the swivel portion of the flange and loaded with stainless steel bearings. Taper-Lok Swivel Flanges are easy to rotate, allowing rotation by hand on large diameter flanges. This saves divers numerous hours of installation time. Ball Bearings The ball bearings can be viewed in the cut-away section in the diagram above There is no need for a retainer ring to prevent the swivel from sliding onto the pipe. When the ball bearings are loaded into the race, the swivel is locked into place by the bearings. Misalignment Capability The Misalignment Assembly is comprised of a weld neck flange with a spherical recess in the face, ball joint, spherical seal ring, swivel ring flange and a complete set of studs and nuts. The standard Misalignment Assembly (Figure B, right) allows up to 10-degrees of both axial and angular misalignment of piping. The misalignment capability offered by Taper-Lok connections have proven invaluable in previous subsea installations where time is at a premium and the means to facilitate the alignment of an installed pipeline is limited. Taper-Lok compact connections with misalignment capability offers geometric flexibility during installation. 10 Misalignment Flange 4

5 A. Swivel Flange Assemblies Misalignment Flange Assemblies B. Swivel Flange Assemblies can be easily rotated saving numerous hours of installation time. A. B. 5

6 Special Taper-Lok Product Features Compact Design Taper-Lok connections are smaller and lighter than conventional flanges. The Taper-Lok compact design reduces space and weight. ANSI Flange Assembly Taper-Lok Flange Assembly Seal Ring Retainers - Cam-Loks Taper-Lok offers a unique Seal Ring Retainer system for connections that will be installed subsea, for riser buoyancy systems and for large closures that are installed in the vertical position. The optional Seal Ring Retainer holds the seal ring loosely in place in the female pocket. The space between the flanges allows for the placement of Cam-Loks to retain the wide area seal ring during positioning and make-up. The retainers do not interfere with the assembly of the flanges so there is no need to remove them prior to assembly. To keep the seal ring in place, the female flange can have retainers installed. The seal ring and retainer can be installed on the platform or barge prior to the connection being lowered into the sea. This will aid the diver during assembly. Time savings, even 30 minutes, per connection adds up when considering pipe lay barge fees. Any installation time saved will outweigh the cost of the flange connections. 6

7 Subsea Studs and Nuts with Tensioner Allowance The standard stud and nut coating system offers years of corrosion protection in the subsea environment. All studs provided with Taper-Lok subsea connections are of suitable extra length for 100% tensioning with standard subsea tensioners. Nuts are provided with Tommy bar holes as a standard. The standard stud and nut coating system applied to Taper-Lok bolting has a special coating that protects against corrosion and creates a smooth and durable surface, making it easier for divers to spin nuts into position during make-up. This added step assures years of corrosion protection in the subsea environment, which low friction coatings alone cannot offer. Subsea Coating Application Taper-Lok subsea connections are priced to include the application of Carboline 890 (12 mil dry film thickness/2-3 coats/safety Yellow)) to the external surfaces of the connection. Base Coat: Sermagard Top Coat: Xylan Black Carboline 890 Internal mating surfaces of Swivel Flanges and Misalignment Flanges are coated with a combination of Sermagard 1105 (0.8-1 mil dry film thickness) for corrosion protection and top coated with Xylan Black (0.5-1 mil dry film thickness) for a durable/low friction finish surface. These coatings provide years of corrosion protection in subsea service. Lifting Eyes Taper-Lok subsea connections offer three lifting eyes, making fabrication and installation easier and safer. 7

8 Taper-Lok, an AFGlobal Company 945 Bunker Hill, Suite 500, Houston, TX Tel: Connectors & Sealing Technologies Welding Units (UK) Ltd, an AFGlobal Company Mill Lane, Rainford, Merseyside WA11 8LR England Tel:+44 (0) Fax: +44 (0) afglobalcorp.com 2014 AFGlobal Corporation. All rights reserved.