Hydrotest Data Loggers Delivered to South East Asia

Aquatec Group (UK) have recently integrated their HYDROlog 2000 Hydrotest Data Logger instruments with a hot stab connection to provide a simple ROV-deployable and retrievable solution for a major pipeline pre-commissioning company in South East Asia.

The HYDROlog range was developed to provide a pressure and temperature record of pipeline hydrostatic test procedures that take place during the pipeline pre-commissioning phase.  A steady pressure record that remains above the required minimum test pressure allows the contractor to sign off on the installation.  The temperature record is used to account for pressure variations due to changing ambient temperature.

By coupling the instrument to a hot-stab, it can easily be removed by an ROV immediately after the minimum pressure hold time has been met, and taken to the surface for data download and analysis, thus saving valuable ship time.

The integral hot stab is one of several methods for deploying the HYDROlog instruments.  Other solutions include the use of subsea ROV-readable displays, real-time optical data links, and acoustic data links.  Models are currently available to monitor test pressures up to 1400 bar.