Carry out scheduled maintenance on traction and rolling stock communication-electronic equipment
Overview
This standard identifies the competencies you need to carry out scheduled maintenance on traction and rolling stock communication-electronic equipment. You will be required to carry out scheduled maintenance activities on a range of communication-electronic systems, sub-systems or assemblies. You will need to carry out the maintenance activities to minimise downtime and to ensure that the maintained system performs at the required level and functions to specification. The term traction and rolling stock used in this standard applies to passenger, freight and on-track machinery (OTM). Where it is relevant these standards also apply to traction and rolling stock that has been fitted with the European Train Control System (ETCS).
You must ensure that all tools, equipment and materials used in the maintenance activities are removed from the work area on completion of the activities and that all necessary job/activity documentation is completed accurately and legibly. You will be expected to work to instructions, alone or in conjunction with others.
You will have an understanding of the process of implementing scheduled maintenance activities, the importance of carrying them out at specific times and recording their outcomes and actions taken. In addition, you will be expected to report where the outcomes identify the need for further investigation or maintenance work.
You will understand the safety precautions required when carrying out the scheduled maintenance activities, especially those for isolating the equipment and for taking the necessary safeguards to protect yourself against direct or indirect electric shock.
Performance criteria
You must be able to:
P1 maintain safe working practices and comply with all relevant health and safety regulations, directives, and guidelines
P2 follow the relevant communication-electronic maintenance schedules to carry out the required work
P3 carry out the communication-electronic maintenance activities within the limits of your personal authority
P4 carry out the communication-electronic maintenance activities in the specified sequence and in an agreed time scale
P5 report any instances where the maintenance activities cannot be met or where there are identified defects outside the planned schedule
P6 complete relevant maintenance records and pass them on to the appropriate person
P7 dispose of waste materials in accordance with safe working practices and approved procedures
Knowledge and Understanding
You need to know and understand:
K1 the relevant health and safety regulations, directives, guidelines, and safe working practices and procedures defined by your organisation, as appropriate to the activity and your working area
K2 the isolation and lock-off procedure or permit-to-work procedure that applies to the scheduled maintenance activities (such as electrical isolation, locking off switchgear, placing of maintenance warning notices, proving the isolation has been achieved and secured)
K3 isolation procedures unique to communication-electronic systems, sub- systems or assemblies
K4 the specific health and safety precautions needed to be applied during the scheduled maintenance procedure and their effects on others
K5 the classification of different voltage levels and the authority requirements for working on them
K6 the steps to take to secure the vehicle from movement and protect it from other vehicle movements
K7 the hazards associated with carrying out scheduled maintenance activities on communication-electronic systems, sub-systems or assemblies (such as exposure to live conductors, misuse of tools), and how they can be minimised
K8 how to reduce the risks associated with stored energy systems (such as capacitors, air systems, hydraulic systems and springs)
K9 what constitutes a hazardous voltage/current and how to recognise victims of electric shock
K10 the importance of wearing protective clothing and other appropriate safety equipment (PPE) during the maintenance activities
K11 how to reduce the risks of an electric shock (such as insulated tools, rubber matting and isolating transformers)
K12 how the maintenance activities may affect the work of others, and the procedure for informing them of the work to be carried out
K13 the procedures and precautions to be adopted to eliminate electrostatic discharge (ESD)
K14 how to obtain and interpret information from job instructions and other documentation used in the maintenance activities (such as drawings, specifications, manufacturers' manuals, symbols and terminology)
K15 the maintenance schedules and methods to be followed in order to comply with company procedures for scheduled maintenance
K16 how to use maintenance software tools provided for the equipment
K17 the various checks to be carried out during the scheduled maintenance procedure
K18 the maintenance requirements for 'lifed', consumable and on condition components
K19 the procedures for quarantining defective materials and local warranty procedures for repair or replacement
K20 how to make sensory checks (by sight, sound, smell or touch)
K21 company policy on repair/replacement of systems, sub-systems and assemblies during the scheduled maintenance process
K22 methods of checking that systems, sub-systems and assemblies are fit for purpose, and the need to replace `lifed' items (such as batteries )
K23 how to make adjustments to systems, sub-systems and assemblies to ensure they function in accordance with operational procedures
K24 the importance of recording the serial numbers of removed and newly fitted components affecting the rolling stock asset tree
K25 the generation of maintenance documentation and/or reports following the maintenance activity
K26 problems that can occur during the scheduled maintenance activity, and how they can be overcome
K27 the organisational procedure to be adopted for the safe disposal of waste of all types of materials
K28 the extent of your authority and to whom you should report if you have problems that you cannot resolve
Scope/range
Scope Performance
In carrying out communication-electronic maintenance activities, individuals will:
- undertake the maintenance activities to cause minimal disruption to normal working
- use the correct issue of maintenance documentation (such as drawings, manuals, maintenance records)
- adhere to procedures or systems in place for risk assessment, control of substances, personal protective equipment and other relevant safety regulations
- confirm with the authorised person that the equipment is ready for carrying out the scheduled maintenance
- ensure the safe isolation of equipment
- ensure that safe access and working arrangements have been provided for the maintenance area
- carry out the scheduled maintenance activities, using appropriate techniques, tools, and procedures re-connect and return the equipment to service on completion of the maintenance activities
- leave the work area in a safe and tidy condition
Types of communication- electronic systems, sub-systems or assemblies include:
- Communication-electronic equipment:
- transmitters
- transceivers
- receivers
- aerial systems
- radar systems
- staff communication systems (such as GSMR, PA, cab to cab)
- train control systems (such as AWS, ATP, TPWS, ERTMS)
- data transmission lines (such as fibre optics, coaxial, baluns, twin wire)
- display systems (such as crew and passenger information)
- driver-machine interface
- optical systems (such as CCTV)
- built-in test equipment
- data network systems (such as LANs, WANs)
- data network interfaces (such as switches, router, bridging networks)
- any other identifiable electronic system, subsystem or assemblies to Line Replaceable Unit (LRU) level
- Associated equipment:
- environmental control systems (such as temperature, alarms, fire protection, fire suppression)
- electromechanical systems (such as servos, motors, relays, complex switches)
- power generation systems (such as AC/DC generators, batteries)
- power distribution systems (such as single phase/3-phase distribution panels, shore connections)
- traction supply control systems (such as inverters, rectifiers, regenerative braking)
- monitoring systems (such as On Train Data Recorder (OTDR))
- hybrid systems (such as ADC, DAC)
Types of scheduled maintenance activities carried out could include:
- removing excessive dirt or grime
- making sensory checks (such as sight, sound, smell or touch)
- visual examination and testing of a system against the maintenance schedule
- replacing 'lifed' consumables
- monitoring the condition/deterioration of components (such as connectors, switches, contactors, fans, safety devices)
- carrying out system self-analysis checks
- making routine adjustments
- carrying out leak checks on connections (where appropriate)
- checking the condition of cables
- checking the integrity of connections
- making insulation resistance checks
- checking/tightening fastenings to the required torque
- correct fitting of locking devices
- testing the system operation
- recording the results of the scheduled maintenance activity and reporting any identified or potential defects
- reporting or taking action with regard to any defects that require immediate attention (such as replacing non-'lifed' components)
Equipment maintenance may need to comply with the following:
- organisational guidelines and codes of practice
- equipment manufacturer's operation range
- BS, ISO and/or BSEN standards
- company standard operating procedures (SOP's)
- documents such as technical procedures, vehicle maintenance instructions, vehicle overhaul instructions, workshop overhaul standards specifications, OEM Documentation, Guides & Manuals
Types of maintenance records that need to be completed and passed to the appropriate people could include:
- job cards
- maintenance log or report
- permit to work/formal risk assessment
- specific company documentation
- electronic records