February 2022

Plant Design, Engineering, Construction and Commissioning

Piping interface type selection

Most oil and gas process plant projects involve multiple work packages executed by different lump sum turnkey (LSTK) contractors executing work within their own package, with a final piping interface connection at an agreed boundary limit to accomplish the interface joint between two parties and successfully close the piping interface.

Alsuayyid, A., Jadav, N., Saudi Aramco

Most oil and gas process plant projects involve multiple work packages executed by different lump sum turnkey (LSTK) contractors executing work within their own package, with a final piping interface connection at an agreed boundary limit to accomplish the interface joint between two parties and successfully close the piping interface. An interface point (IP) is a physical location or boundary where responsibility for the item passes from one contractor to another contractor. Piping IPs are commonly located at or near a geographical contract boundary, generally known as an interface gate (IG). One of the contractors is assigned the role of lead contractor, which has the responsibility for t

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