REMAINING STRUCTURAL AND PIPING WORKS UNDER UA-6 PIPELINE REHABILITATION

SCOPE OF WORK

To complete the installation of all remaining structural and piping works for the 48″/46″ pipeline from km 90 (Mubarraz area) to the Abqaiq Plant intended for final mechanical completion phase.

​This specific segment involves transitioning from cross-country pipeline construction to the high-density infrastructure of a major processing facility. Below is a structured breakdown of the remaining critical activities required for completion.

​1. Piping Works: Final Tie-ins and Fabrication

​ ​Tie-in Welds (Golden Weld Joints): Completion of final welds connecting the 48″/46″ line segments in KM 62 and KM 14. These requires 100% NDT (Radiography/Phased Array) and other related activities.

​Station Piping: Installation of kicker lines, bypass lines, and vent/drain piping for the Scraper Receiver (Pig Trap) area, Jib Crane and lateral line from Hot Tap Tie-in connection, Spools for 10 Jump-over Area and 3 Valve Station Area.

​Valve Installation: Mounting and torquing of large-diameter Motor Operated Valves (MOVs), Gas Operated Valves (GOV) and Check Valves.

​Hydrostatic Testing: Sectional testing for the spools of 10 Jump-over Area and 3 Valve Station across the whole pipeline.

​ ​2. Structural Works: Supports and Access

​Pipe Supports & Sleepers: Installation of sliding and fixed supports, particularly at the “km 90” transition and Abqaiq plant entry point to handle thermal expansion.

​ ​Platforms & Walkways: Erection of steel structural platforms around the scraper traps and main isolation valves to allow operator access.

​Pipe Racks: Completion of the structural steel supports and “T-posts.”