Cath-Tech International Ltd
Specialist Pipeline Surveyours and Equipment Suppliers
Cath-Tech International Ltd
This new project for a major UK gas pipeline operator is to complete a Close Interval Potential Survey (CIPS) to approx 200 km of buried pipeline in the SE of UK. This work is being carried out by our in house highly trained staff and will be completed by December 2006.
This survey records Pipeline "ON" and "OFF" potentials at regular intervals of 1 metre which are achieved by the installation of our CATH_TECH GPS synchronised current interrupters at the Transformer Rectifiers on a cycle of 0.8 seconds "ON" and 0.2 seconds "OFF". Readings are recorded along the pipeline route with our own HEXCORDER Graphica instrument which gives full synchronisation via the GPS network with the interruption cycle of the current interrupters. A second HEXCORDER is installed as a Static Logger to correlate any stray current interference found on the pipeline.
We also have a second CIPS project. This project involves 50km of surveying to be carried out for an independent gas transmission company based in Scotland. . This work will be completed in 2006.
This survey records Pipeline "ON" and "OFF" potentials at regular intervals of 1 metre which are achieved by the installation of our CATH_TECH GPS synchronised current interrupters at the Transformer Rectifiers on a cycle of 0.8 seconds "ON" and 0.2 seconds "OFF". Readings are recorded along the pipeline route with our own HEXCORDER Graphica instrument which gives full synchronisation via the GPS network with the interruption cycle of the current interrupters. A second HEXCORDER is installed as a Static Logger to correlate any stray current interference found on the pipeline.
We also have a contract for a combined CIPS and Gradient Potential Survey for a major Oil Pipeline operator. This project involves some 250km of surveying to be carried out in all areas of the UK. Project completion date is March 2007.
This survey records Pipeline "ON" and "OFF" potentials at regular intervals of 1 metre which are achieved by the installation of our CATH_TECH GPS synchronised current interrupters at the Transformer Rectifiers on a cycle of 0.8 seconds "ON" and 0.2 seconds "OFF". Readings are recorded along the pipeline route with our own HEXCORDER Millennium instrument which gives full synchronisation via the GPS network with the interruption cycle of the current interrupters. A second HEXCORDER is installed as a Static Logger to correlate any stray current interference found on the pipeline.
The DCVG Gradient readings are taken approximately 6-7 metres away from the CIPS Surveyor via a 2nd set of half cells carried by an operator and connected to the HEXCORDER Millennium. The two members of the team work side by side gathering the data which is transferred to the Head office where another member of the team collates the data and inputs it into our system. Reports are then created.
In this project we aim to supply the client with accurate and reliable reports for the monitoring of around 16 pipelines and 9 sites. The project delivers written reports of the condition of the cathodic protection, followed by graphical presentations showing the readings.
The job involves members of our team going out on site and taking readings at the test posts and transformer rectifiers in all the areas required. Two members of the team work on the site gathering the data while another member of the team collates the data and inputs it into our system and creates the reports.