On 27.07.2020, in the city of Sofia, between National Railway Infrastructure Company, in its capacity of an Employer, and “TINSA” Ltd (Contractor), a contract No. 11172/27.07.2020 was signed for the award of a public procurement with a subject: Independent assessment of the suitability of the application of the risk management process for Elin Pelin – Kostenec railway section and traction substations Kazichene and Ihtiman.