Maintain traction and rolling stock ancillary equipment
Overview
This standard identifies the competencies you need to carry out corrective maintenance activities on traction and rolling stock ancillary equipment, in accordance with approved procedures. You will be required to maintain a range of equipment, such as CCTV, digital recording systems, passenger displays, route information, Wi-Fi and other onboard ancillary equipment. This will involve dismantling, removing and replacing faulty equipment, at the unit level or maybe to component level, on a variety of different types of ancillary equipment assemblies and sub-assemblies. You will be expected to apply a range of dismantling and reassembly methods and techniques, such as crimping, harnessing and securing cables and components. The term traction and rolling stock used in this standard applies to passenger, freight and on-track machines (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).
Your responsibilities will require you to comply with organisational policy and procedures for the maintenance activities undertaken and to report any problems with the maintenance activities that you cannot personally resolve, or that are outside your permitted authority, to the relevant people. 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 maintenance documentation is completed accurately and legibly. You will be expected to work with minimal supervision, taking personal responsibility for your actions, and for the quality and accuracy of the work that you carry out. Your underpinning knowledge will provide a good understanding of your work and will provide an informed approach to applying maintenance procedures on the ancillary equipment. You will understand the dismantling and reassembly methods and procedures used and their application. You will know about the ancillary equipment worked on, component properties, functions and associated defects, in adequate depth to provide a sound basis for carrying out the maintenance activities, correcting faults and ensuring that the repaired/replaced equipment functions to the required specification and remains compliant with all standards and regulations.
You will understand the safety precautions required when carrying out maintenance activities, especially those for isolating the equipment. You will also understand your responsibilities for safety and the importance of taking the necessary safeguards to protect yourself and others in the workplace.
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 equipment maintenance schedules to carry out the required work
P3 carry out the equipment maintenance activities within the limits of your personal authority
P4 carry out the equipment 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 equipment 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 maintenance activities (such as electrical isolation, locking off switchgear, placing of maintenance warning notices, proving the isolation has been achieved and secured)
K3 the classification of different voltage levels and the authority requirements for working on them
K4 what constitutes a hazardous voltage/current and how to recognise victims of electric shock
K5 how to reduce the risks of an electric shock (such as insulated tools, rubber matting and isolating transformers)
K6 the hazards associated with carrying out maintenance activities (such as contact with live electrical components, misuse of tools, using damaged or ill-maintained tools and equipment, not following laid-down maintenance procedures), and how to minimise these and reduce any risk
K7 the importance of wearing protective clothing and other appropriate safety equipment (PPE) during the maintenance activities
K8 how to obtain and interpret drawings, circuit and physical layouts, charts, specifications, manufacturers' manuals, history/maintenance reports, graphical electrical symbols and other documents needed for the maintenance activities
K9 the principles of how the system functions, its operation sequence, the working purpose of individual units/components, and how they interact
K10 the procedures and precautions to be adopted to eliminate electrostatic discharge (ESD) hazards when working with and handling electronic devices
K11 the different types of cabling and their application (such as multi-core cables, single-core cables, steel wire armoured (SWA), data cables, screened cables)
K12 the different types of connections and interfaces used on the ancillary equipment
K13 the different types of ancillary systems and their various components
K14 the application and use of a range of ancillary components (such as plugs, switches, sockets, displays, cameras, recording devices, audio equipment, passenger information systems)
K15 the different types of wiring enclosures that are used (to include conduit, trunking and traywork systems)
K16 the care, handling and application of multimeters and other electrical/electronic measuring instruments
K17 company policy on the repair/replacement of components, and the procedure for obtaining replacement parts, materials and other consumables necessary for the maintenance activities
K18 how to check that the replacement components meet the required specification/operating conditions (such as values, tolerance, current carrying capacity, voltage rating, power rating, working temperature range)
K19 the techniques used to dismantle/assemble/replace equipment (such as unplugging, removal of screwed, clamped and crimped connections)
K20 methods of removing and replacing cables and wires in wiring enclosures without causing damage to existing cables
K21 methods of attaching identification markers/labels to removed components or cables to assist with re-assembly
K22 the tools and equipment used in the maintenance activities (including the use of cable stripping tools, crimping tools, gland connecting tools)
K23 methods of checking that components are fit for purpose, and the need to replace `lifed' items (such as batteries, filters, seals/gaskets, overload protection devices)
K24 the importance of recording the serial numbers of removed and newly fitted components affecting the rolling stock asset tree
K25 how to make adjustments to components/assemblies
K26 how to check tools and equipment are free from damage or defects, are in a safe and usable condition, and are configured for the intended purpose
K27 the importance of making integrity checks before proving the equipment with the electrical supply on
K28 the generation of maintenance documentation and/or reports following the maintenance activity
K29 the equipment operating and control procedures to be applied during the maintenance activity
K30 how to use appropriate lifting and handling equipment in the maintenance activity
K31 the problems that can occur during the maintenance activity, and how they can be overcome
K32 the organisational procedure(s) to be adopted for the safe disposal of waste of all types of materials
K33 the extent of your own authority and to whom you should report if you have a problem that you cannot resolve
Scope/range
Scope Performance
During maintenance activities, individuals will:
- plan and communicate the maintenance activities to cause minimal disruption to normal working
- obtain and use the correct issue of company and/or manufacturers' drawings and maintenance documentation as well as the correct version of any maintenance software tools required
- adhere to procedures or systems in place for risk assessment, control of substances, personal protective equipment and other relevant safety regulations and procedures to realise a safe system of work
- ensure the safe isolation of equipment (such as electricity, mechanical, air or fluids)
- provide and maintain safe access and working arrangements for the maintenance area
- carry out the maintenance activities using appropriate techniques and procedures
- re-connect and return the equipment to service on completion of the maintenance activities
- dispose of waste items to comply with environmental protection guidelines and ensure the work area remains safe
Types of ancillary equipment being maintained could include:
- at seat power connections
- audio video on demand (AVOD)
- in train entertainment system (ITES)
- seat reservation system (SRS)
- route information
- CCTV
- on train monitoring recorder (OTMR)
- digital recording systems
- passenger displays
- audio systems
- call for aid system
- Wi-Fi
- other specific ancillary equipment
Types of maintenance activities carried out, as applicable to the equipment being maintained, could include:
- taking electrostatic discharge (ESD) precautions when working on or close to sensitive components
- isolating and locking-off equipment
- attaching suitable cable identification markers
- disconnecting and reconnecting wires and cables
- removing and replacing damaged wires and cables
- removing and replacing wiring support systems
- checking components for serviceability
- replacing damaged/defective components
- removing units/components
- setting and adjusting replaced components
- torque loading of fasteners and correct fitting of locking devices
- making `integrity' checks before powering up
- functionally testing the completed system
- other specific maintenance activity
Types of components being replaced/refitted could include:
- cables and connectors
- cameras
- routers
- displays/screens
- digital recorders
- interfaces
- batteries
- relay components
- switches
- sensors
- overload protection devices
- solenoids
- sockets
- speakers
- microphones
- indicators
- locking and retaining devices (such as cable ties, clips, proprietary fasteners)
- circuit boards
- other specific ancillary components
Maintenance activities may need to be carried out in accordance with the following:
- organisational guidelines and codes of practice
- equipment manufacturer's documents
- BS, ISO and/or BS EN standards
- company standard operating procedures (SOP's)
- documents such as technical procedures, vehicle maintenance instructions, vehicle overhaul instructions, workshop overhaul standards specifications
Types of paperwork/records that need to be completed and passed to the appropriate people could include:
- job cards
- maintenance log or report
- permits to work/formal risk assessment and/or sign-on/off procedures
- company-specific documentation
- electronic records