"DM-SL 18L introduced the following: an increase in the size of the tanks holding an additional 1·5 tonnes of propellant, removal of one omnidirectional antenna, design changes to decrease mass."
The Zenit-2S Quarterly Production Review will be conducted by Energia Logistics LLC for Zenit # 37 & 38 on August 13 & 14th at the Yuzhnoye/Yuzhmash facilities in Dnepropetrovsk, followed by Hardware Acceptance of the Block-DM-SL # 36 & 37 at RSC Energia Moscow facilities on August 15th.
A Zenit-3SL Quarterly Production Review (QAR) will be held the week of December 13th at RSC Energia’s Korolev facility to verify the production status and review quality documents of Block-DM-SL’s (#38 - 40) presently in production. The Zenit-2S QAR will take place at the Yuzhnoye/Yuzhmash facilities on December 18th.