Hydraulic and Electrical Testing Subsea

EnerMech's hydraulic and electrical testing division is highly skilled in carrying out testing of umbilicals during the pre-commissioning duration, including pre-and-post load out tests, pre abandonment test, post pull in and post hook up tests.

It is critical that systems and valves controlled by hydraulic umbilicals use fluid cleaned to the required specification. Umbilicals with different fluid cores and pressure ratings are separated into groups and pressurised through a common manifold to ensure testing is carried out. Calibrated instrumentation and PRVs are routinely used by EnerMech to ensure the correct pressures are adhered to.

Subsea operations require trustworthy electrical power cables to provide crucial control and data transmission. EnerMech provides electrical testing for these cables, on all the above stages of pre-commissioning activities, for continuity resistance (CR), insulation resistance (IR) and time domain reflectometry (TDR).

CR testing carried out by EnerMech can be carried out on looped quads or umbilicals where we have access to both ends. CR testing will ensure there is continuity throughout the length of the conductors.

IR Testing can be carried out on individual or looped quads. Quads of the same size can also be tied together to test as a bundle, saving time for our customers. IR testing on a quad can be carried out against other quads or against the cable screen. Voltage used for IR testing can be discussed and agreed between EnerMech and client on a project specific basis.

TDR Testing carried out by EnerMech can be used to find faults within a conductor on single or looped conductors. The test uses a high frequency pulse which is transmitted along the conductor with a reflection signature or trace received back to the TDR test set. Faults will be highlighted on the final trace and can be compared to FAT results.