technical specifications - pipeline

Pipeline Technical Information

The 6km onshore section of the pipeline runs from inside the Shetland Gas Plant fence to the landfall at Firths Voe.  The facilities at the Shetland Gas Plant consists of a pig launcher, HIPPS (High Integrity Pressure Protection System) and beach valve. No processing or compression facilities are available from SIRGE. The offshore route continues to head in a general easterly direction until it reaches a point to the East of the Out Skerries.  At this point it turns and heads in a southerly direction, before tying-in subsea to the FUKA system at the MCP01 bypass.  The offshore route is 228.5km in length, giving a total pipeline length of 234.5km from the Shetland Gas Plant to MCP-01.

SIRGE System Offshore Pipeline Routing

The offshore section is designed to DNV-OS-F101 with the onshore section designed BS PD 8010-1.  Linepipe material is carbon steel grade L450 FDU SAW.  Fluid classification is class D: non-toxic, single-phase natural gas.

The tie-in to the FUKA pipeline at the MCP-01 bypass is via two 12” sub-sea tie-ins.