TRFL (Germany)
TRFL is the abbreviation for “Technische Regel für Fernleitungsanlagen” (Technical Rule for Pipeline Systems). The TRFL summarizes requirements for pipelines being subject of official regulations. It covers pipelines transporting flammable liquids, pipelines transporting liquids that are dangerous for water, and most of the pipelines transporting gas. Five different kinds of LDS or LDS functions are required:
- Two independent LDS for continuous leak detection during steady-state operation. One of these systems or an additional one must also be able to detect leaks during transient operation, e.g. during start-up of the pipeline
- One LDS for leak detection during shut-in operation
- One LDS for creeping leaks
- One LDS for fast leak location
Read more about this topic: Leak Detection, Rules and Regulations