(2)Chapter 2 is replaced by the following:‘2.DESCRIPTION OF SCOPEThis TSI applies to the Union rail system, which includes TSI conform and non-TSI conform vehicles and fixed installations.This TSI relates to processes and procedures, as well as to physical elements of vehicles and fixed installations that are important for their operational function in the context of this TSI and requirements applicable to staff executing safety-critical tasks.The railway undertaking and the infrastructure manager shall ensure that all requirements of this TSI become a relevant part of railway undertaking’s and infrastructure manager’s safety management system (“SMS”) as required by Directive (EU) 2016/798.’;