Pructon undertook the construction of the Bulk Liquids Berth (BLB) at Darwin port with the installation of a 350NB pipeline, 2.4Km in length. Pipes were supplied to us in 12-metre lengths to our Darwin yard. We used the innovative method of joining two lengths of pipe and welding them into 24-metre lengths in the workshop. This effectively reduced the welding time and provided greater quality control within an environmentally controlled area. Site installation times were improved by reducing the number of field welds by half. We successfully completed 10% NDT, hydro testing of the line and on-site surface treatment to treat the weld margins. Works included on-site whip blasting and spray application. We fabricated and installed the pig launchers and receivers and used pigs to clear the line of all contaminants. Once the line was cleaned, commissioning of the line was undertaken by our personnel in conjunction with Vopak, the terminal owners.
Scope of Work
- Off-site fabrication of pipe and pipe supports
- Transport of pipes from workshop to site after surface treatment
- Installation of 24m long pipes onto pipe rack
- Site welding of pipework
- Pigging of the line
- Commissioning of the system