Lone Star Pipe Tracking System
The system offers effective material traceability and quality assurance for the entire process of pipeline fabrication from the chemical analysis of the casts of the steel through to the as-built and as-laid records of the completed pipeline.
Quality assurance functions are an integral part of the system by recording all welds, repairs and re-weld details as well as visual, radiography, ultrasonic, magnetic particle and dye-penetrant examinations.
Full status information is maintained on material detailing the stages and its current location within the fabrication process. This also enables the system to record and display the pipeline length and volume at any give time also ensuring that a full material reconciliation can be performed as soon as the project is completed.
Lone Star Pipe Tracking System offers users a real competitive advantage. Key features, such as, the comprehensive report, search and status functions, combine functionality and practicality to deliver improved pipeline management.
|Production Report Generation||Maintain lists of all pipes and associated fittings|
|Pipe Inventory||Maintain lists of all welds, repairs and re-welds|
|Weld History||Record all weld survey points|
|GIS Mapping||Record all examination results|
|OS&D||Maintain status of pipes and welds|
|Footage/Length Stats||Record of all field joints|
|Online Real Time Database||Facility to report on any part of the pipeline, in either direction|
Listed below are the types of pipelay vessels and methods.
S-lay Pipe Tracking
Conventional method for rigid pipe. When using the S-lay installation method, onboard welded pipe joints leave the vessel horizontally and are guided to the seabed over a “stinger” – a structure on the back of the ship that supports the seagoing pipe string to control its bend radius.
The pipe is lowered using tensioners. Due to its high production rate and the possibility to install concrete coated pipe, S-lay is extremely suitable for pipe installation in shallow and intermediate waters. Larger water depths are equally possible but require a very long stinger, turning S-lay into a less practical and efficient solution
JLay Pipe Tracking
One method for installing subsea pipelines in deepwater is by J-lay installation. Pipe stalks with a length up to 6 joints are upended and welded to the seagoing pipe in a near vertical ramp. The ramp angle is chosen in such a way that it is in line with the pipe catenary to the seabed.
The J-lay method is very suitable for deepwater as the pipe leaves the lay system in an almost vertical position. The pipeline is only bent once during installation (at the seabed) which is advantageous for installing pipelines that are sensitive to fatigue. Compared to other lay methods, J-lay has a relatively low production rate due to the single welding station. The J-lay method is less suitable for shallow waters as this requires a steep departure angle.
Spool-base & Reel Lay
Reel-lay and carousel-lay are used for rigid and flexible pipes: large lengths of pipe are welded, tested and coated onshore and then spooled on vertical reels or horizontal carousels on board the lay vessel.
During pipelay the pipe is un-spooled from the reel or carousel. Straightening of the pipe is required before it is over boarded. The advantages gained by the high production rate as well as the controlled welding and inspection conditions onshore, make Reel-lay an extremely efficient method for the installation of pipelines up to 20 inch in all waters.
Please contact PTI for a online demo of the LSPTS.