The 1st Natural Gas System Workshop had been held on July 2011 by EMRA last year. The 2nd Natural Gas System Workshop was held again by EMRA on October 2 – 4, 2012 in Ankara. The representatives of sector companies which provided the amendment proposals to BOTAS Natural Gas Network Code and TPAO Underground Storage Usage Procedures and Principles (UPP), as well as BOTAS, TPAO and GAZBIR participated to the workshop. The first two days of workshop BOTAS Network Code issues and the last day TPAO Silivri Underground Natural Gas Storage Facility Usage Procedures and Principles (UPP) issues were discussed.