Case study: NORSOK Super-Duplex Chemical Injection Skids | Riis Energy Services

The challenge

Tight ferrite and hardness requirements for 25Cr super-duplex piping, and a weight limit per skid for offshore lifting.

Our solution

Welding procedures qualified to NORSOK M-601 with 100% ferrite measurement, PMI on all components and laser-tracker dimensional control.

The results

Weld repair rate of 0.8% and all skids within 1.5% of target weight.

Timeline

Month 1 WPQR and material receipt
Months 2–6 Fabrication & NDT
Month 7 FAT and load-out