Pipeline Stress tests can be conducted periodically to ensure the structural integrity of the pipeline system including gaskets, flanges, etc. This is achieved by pressurizing the pipeline system to a defined pressure level (e.g. 125-150% of operating pressure, Max Allowable Operating Pressure, ore Deadhead pump pressure) for a defined period of time (e.g. 2-4 hrs). The pressure (and temperature, if required) is then constantly monitored and recorded in order to identify anomalies.
The HCNA-LDS is especially designed to fulfill this task. Pressure (and temperature) readings are constantly monitored by the HCNA-LDS technology over the requested pre-defined time with data stored electronically with a hardcopy printout of the test protocol for record purposes. The system to be tested is usually pressurized with a portable high-pressure jockey pump. The monitoring time as well as the required stress pressure level can be chosen without limitations.
Upon completion of the Pressure Stress Test, a follow-on 45 minute HCNA-LDS leak detection test is conducted to confirm the tightness of the pipe and certify the line segment as tight.
The benefit to the pipeline owner or operator of this combined approach is that you can quickly and accurately satisfy traditional hydrostatic test requirements without having to wrestle with the temperature change issue and thereby save time and money.