Checking Procedure of the Trieste (Italy) Subsea Pipeline by Transient Tests. Preliminary Results

The subsea transmission main (TM) of Trieste, Italy, plays a crucial role in the water supply system managed by AcegasApsAmga SpA (Hera Group). With the aim of implementing a systematic inspection procedure (at present divers are used for periodic surveys) AcegasApsAmga SpA decided to proceed with Transient Test-Based Techniques (TTBTs). In this paper, the results of preliminary transient tests generated by means of the existing devices (the first option to be considered within TTBTs) are discussed and possible alternatives are highlighted.