The goal of this assignment is to make an integral assessment of the current state of the assets of the Uzbek state-owned gas transmission system operator Uztransgaz (UTG); and its institutional capacity to detect and assess gas leaks from operations.During Phase 2B; the Contractor will be expected; for ten (10) selected facilities of UTG; to carry out the following scope of work.*In collaboration with; and supporting UTG specialists; to identify all methane emissions; quantify these; and determine their root causes. Technologies used should be tailored to the current condition of UTG¡¯s assets; and may include satellites; helicopter- and drone-based; car-mounted; and hand-held technologies; and must be in line with the Oil and Gas Methane Partnership (OGMP) 2.0 best practice at Level 4.*In collaboration with; and supporting UTG specialists; to identify repair and/or replacement measures to reduce or eliminate identified methane emissions. Proposed measures will be reviewed and must be agreed by UTG as being technically feasible and realistic.*In collaboration with; and supporting UTG specialists; to estimate the costs and propose a prioritization of repair and replacement measures based on the cost vs. the emission reduction potential.*Support UTG specialists to make an implementation plan for selected measures using the established prioritization criteria; and recognizing operational constraints.Furthermore; the Contractor will be expected to carry out the following; general scope of work.*Review the institutional capability and human resources currently available within UTG for sustained maintenance of the gas transmission network with a focus on avoiding methane leaks. Identify gaps with international best practice. Make recommendations for required capacity building and necessary organizational changes.*Review the availability; accuracy; and working condition of permanently installed and movable leak detection equipment and capacity; either in-house or through vendor relationships that can be easily mobilized. Establish the gap with state-of-the-art equipment and best practice; and make recommendations for improvements; recognizing that UTG may want to join the OGMP 2.0 partnership and reach Level 4 within reasonable time.*Complementary to the on-the-job learning described above; conduct a series of classroom training sessions for UTG specialists on gas leak detection and assessment in line with the OGMP 2.0 standard.