Economic Regulation In this Section Economic Regulation NPA Tariff Applications Benchmarking and Research Port Tariff Incentive Programme (PTIP) Tariff Methodology Tariff Strategy WEGO 2015/16 – 2017/18 Tariff Methodology Review Comments Organisation Size Type Columbus Stainless 387 KB NPA 685 KB SAAFF 550 KB SAASOA 340 KB