BS EN 15746-4 pdf free download

BS EN 15746-4-2020 pdf free download.Railway applications — Track — Road-rail machines and associated equipment Part 4: Technical requirements for running, travelling and working on urban rail.
4.2.2 General, EN 15746-1:2020, 5.1 To replace EN 15746-1:2020, 5.1, machines do not have to comply with geometric limits requirements stated. The geometric parameter of the track of the urban rail on which the machine is intended to travel shall be requested from the Urban Rail Manager. The manufacturer shall state in the instruction handbook the system(s) on which the machine is intended to operate.
4.2.3 Gauge, EN 15746-1:2020, 5.2.1 To replace EN 15746-1:2020, 5.2.1, machines do not have to comply with gauging requirements stated. The gauge of the urban rail on which the machine is intended to travel shall be requested from the Urban Rail Manager. The manufacturer shall state in the instruction handbook the system(s) on which the machine is intended to operate.
4.2.4 Machines in travelling mode, EN 15746-1:2020, 5.2.2 EN 15746-1:2020, 5.2.2 is applicable except that moveable parts and assemblies do not need to be stowed and secured. It is sufficient, that the transport position of working equipment that is able to foul the kinematic envelope shall be clearly recognizable or displayed to the driver/operator.
4.2.5 Working limit, EN 15746-1:2020, 5.2.3 Where EN 15746-1:2020, 5.2.3 refers to EN 14033-2:2017, 5.3.2, machines need not comply with this working limit, or the 1 300 mm revolving superstructure limitation. The limits for the urban rail on which the machine is intended to work shall be requested from the Urban Rail Manager. The manufacturer shall state in the instruction handbook the system(s) on which the machine is intended to operate.
4.2.6 Lateral limit exceedance, EN 15746-1:2020, 5.2.4 Machines do not need to comply with EN 15746-1:2020, 5.2.4.
4.2.7 Limits in lower area, EN 15746-1:2020, 5.2.5 Where EN 15746-1:2020, 5.2.5.2 refers to EN 14033-2:2017, Annex D, machines do not have to comply with this working limit. The limits for the urban rail on which the machine is intended to work shall be requested from the Urban Rail Manager. The manufacturer shall state in the instruction handbook the system(s) on which the machine is intended to operate.
4.2.8 Working limit, EN 15746-1:2020, 5.2.6 Where EN 15746-1:2020, 5.2.6 refers to maximum work position heights shown in Annex A, machines do not have to comply with this limit. The limit for the urban rail on which the machine is intended to work is derived from the overhead wire height, which shall be requested from the Urban Rail Manager. The manufacturer shall state in the instruction handbook the system(s) on which the machine is intended to operate. On some urban rail systems it is permissible to work on live overhead equipment, see EN 15746-2:2020, 5.16.8. 4.2.9 Requirements for clearance of track obstacles, EN 15746-1:2020, 5.3 Machines do not need to comply with EN 15746-1:2020, 5.3 if requested by the Urban Rail Manager. In such case the manufacturer shall state in the instruction handbook that the machine will not retain rail guidance while passing over obstacles.
4.2.10 Interaction with the infrastructure, EN 15746-1:2020, 5.4 In EN 15746-1:2020, 5.4, machines do not have to comply with the limits shown. The limits for the urban rail on which the machine is intended to work shall be requested from the Urban Rail Manager. The machine shall be designed to comply with the limits stated by the Urban Rail Manager. The manufacturer shall state in the instruction handbook the system(s) on which the machine is intended to operate.
4.2.11 Safety against derailment, EN 15746-1:2020, 5.5 Machines shall comply with EN 15746-1:2020, 5.5, except that machines do not have to comply with the geometric track limits shown. The geometric track limits for the urban rail on which the machine is intended to operate shall be requested from the Urban Rail Manager. The manufacturer shall state in the instruction handbook the system(s) on which the machine is intended to operate. If data for the twist is not supplied, it is permitted to assume a twist in the track of 5 ‰ for the calculation. Static deviation of rail wheel loads across an axle on level track that are not critical for safety against derailment, might be requested by the Urban Rail Manager to minimize asymmetric wear. Depending on the respective wheel / rail profile pairings as defined by the Urban Rail Manager other limits for ΔQ/Q than stated in 5.5.3.1 might be applicable in the respective calculation. Respective proof of safety against derailment is required in this case. Safety against derailment is able to be proven by calculation using the results of the static test configuration, where the highest change of track wheel loading is measured under the worst track conditions including track twist and track defects as defined by the Urban Rail Manager. Testing should be carried out by the manufacturer of the machine or by an authorized body chosen by the Urban Rail Manager.BS EN 15746-4 pdf download.