# Installation of Subsea Corrosion-Erosion Monitor (CEM) offshore India URL: https://www.clampon.com/field-cases/installation-of-subsea-corrosion-erosion-monitor-cem-offshore-india/ Type: ReferencePage Updated: 2026-01-08 Installation and configuration from vessel to seabed ## Introduction Håvard Pihlstrøm, one of our service engineers went to India in January 2024 for installation and configuration of one of our [ClampOn Subsea Corrosion-Erosion Monitors (CEM**)**](/products/subsea-corrosionerosion-monitor.md) prior to deployment at a water depth of around 850 meter. ## Functional testing of the Corrosion-Erosion Monitor When Håvard arrived on the vessel from which installation would take place, the PLET (Pipeline and Termination) module was ready on deck. They lifted the electronics canister into place and installed it first before commencing functional testing. This functional testing and a software update took time due to a slow network connection. However, with excellent help from crew on board, the task was completed and the canister removed for safekeeping until later ![Subsea CEM ready for functional testing](https://clampon-production.s3.amazonaws.com/images/Field_case_SS_CEM_offshore_India.2e16d0ba.fill-1200x630.jpg) Subsea CEM ready for functional testing ## The A-frame and PLET module On the night of 7th January the PLET module was moved onto what is called the "A-frame", which is a large frame with hydraulics and a winch used to bring the PLET module to a vertical position prior to welding it to the pipeline. It is impressive to see a 24" steel pipe arcing all the way upwards from a depth of over 800 metres to the ship where the PLET module is welded in place. ![PLET module on the A-frame where it is attached to](https://clampon-production.s3.amazonaws.com/images/Field_case_offshore_India_SS_CEM_PLET_module.width-800.jpg) PLET module on the A-frame where the SS CEM is attached to ## Rotating the electronic canister in place Early on the 8th January, they finished welding and coating the pipe, and were then ready for final functional testing of the [Subsea CEM](/products/subsea-corrosionerosion-monitor.md). The electronics canister rotated elegantly in place, despite the Subsea CEM hanging vertically and the locking mechanism having to overcome gravity. The crew were impressed with the design ![Functional testing of SS CEM - India](https://clampon-production.s3.amazonaws.com/images/Havard_India_functional_testing.width-800.jpg) Final preparations before deploying the module subsea ## Deployment of the PLET module and Subsea CEM Functional testing went without a hitch and everything looked good. With a temperature of 30 degrees and a ship waiting for our engineer to complete his task, it was important to work effectively and with precision. Half an hour after he was finished, they commenced deployment of the PLET module subsea, and three hours later it was on the seabed with our Subsea CEM ready to aid safe operation. ![SS CEM installed subsea, India](https://clampon-production.s3.amazonaws.com/images/SS_CEM__Seabed-1024x768.original.max-800x600.jpg) The Subsea Corrosion-Erosion Monitor in place ## Engineer`s assessment of the installation process "It`s exciting to experience a country like India, and working from a ship was new to me. It has been a fantastic opportunity to work on our Subsea CEM as part of a larger installation. It was impressive to see the whole process, from short lengths of pipe to completed gas pipeline 850 metres below. Final testing of the Subsea CEM was carried out while the module was vertical prior to submersion, which meant challenging working conditions and extra safety measures while installing the electronics canister. Fortunately, the test went quickly and without a hitch, and the design worked just as well vertically as it does horizontally" ![](https://clampon-production.s3.amazonaws.com/images/Havard.max-800x600.jpg) [Håvard Pihlstrøm](/meet-the-team.md) - ClampOn Engineer, Field Operations ## Jobs done We thank Håvard for his efforts and look forward to more projects of this type in the future ![SS CEM installation in India - Sunset](https://clampon-production.s3.amazonaws.com/images/Sunset_in_India.max-800x600.jpg) Sunset in India - Jobs done! ## Advantages by using the ClampOn Subsea Corrosion-Erosion Monitor Many governments and petroleum regulations require permanent monitoring of a pipe’s condition, and this instrument provides a constant stream of information about the pipe’s condition at critical points. By installing the Corrosion-Erosion Monitor, the operator can constantly monitor any changes in wall thickness and will know when, if necessary, to replace sections of a pipe, or if there is a risk of leakage caused by corrosion or erosion. [The Subsea ClampOn Corrosion-Erosion Monitor](/products/subsea-corrosionerosion-monitor.md) gives the operators real-time monitoring, it is non-intrusive, retrofit installable, has a large coverage area, and has a high resolution and accuracy. A variety of system configurations are possible, ranging from standalone monitoring stations with internal data logging to full real-time integration into existing data infrastructure. The CEM® is a versatile instrument and can be used to monitor different types of metal structures, for example, manifolds, pipelines and jumpers ### Additional information about the ClampOn Subsea Corrosion-Erosion Monitor Subsea Corrosion & Erosion Monitor [Product page - ClampOn Subsea Corrosion-Erosion Monitor](/products/subsea-corrosionerosion-monitor.md) Corrosion Monitoring Technology [Project award - Corrosion Monitoring for project in South America](/news/corrosion-monitoring-for-project-in-south-america.md) Subsea technology - Corrosion monitoring [Article - Subsea Technology - Corrosion Monitoring](/news/subsea-technology-corrosion-monitoring-from-failure-to-success.md) Subsea Corrosion-Erosion Monitor [Article - ClampOn Subsea Corrosion-Erosion Monitor](/news/subsea-corrosion-erosion-monitor.md) ### ClampOn Corrosion-Erosion Monitor - Videos - shIqtI5tEhA Short introduction of the Corrosion-Erosion Monitor with focus on the Subsea version of the instrument - Presented by Anja Bilsbak - Sales & Marketing - NZJ5CEEMg28 Area Sales Manager Eirik Walle, explains details of subsea Corrosion-Erosion Monitor ready for shipment. _Source:_ ClampOn AS _Canonical:_ https://www.clampon.com/field-cases/installation-of-subsea-corrosion-erosion-monitor-cem-offshore-india/ _Locale:_ en