Undertake installation, enhancement and renewal of overhead line equipment earthing and bonding under direction
Overview
This standard identifies the competences you need to install, enhance or carry out renewal of overhead line equipment (OLE) earthing and bonding cables, such as continuity, cross, impedance, rail, red, return, return screen conductor, structure, transposition and yellow bonds under direction.
The definition of OLE is an arrangement of wires, suspended over the railway line, for supplying electricity to electric trains, together with associated fittings, insulators and other attachments including feeders, autotransformer feeders, overhead line switches, jumpers and return conductors. This equipment together with its structures, foundations, and lineside switching stations is described collectively as Overhead Line Equipment.
To prove competence in this standard you shall need to demonstrate your ability to complete the earth and bonding installation, renewal, enhancement or modification activities in accordance with directions from a specified competent individual.
Your underpinning knowledge will provide a good understanding of your work, and provide an informed approach to applying cable selection, termination and connection procedures. You will understand the basic principles and processes associated with the installation of the earthing and bonding cables and their application. You will know about the ways of handling, terminating, positioning and connecting cables, as well as the care and use of the tools and equipment in adequate depth to provide a sound basis for carrying out the activities and ensuring the finished earthing and bonding is produced to the required specification under direction. You will understand the safety precautions required when working at height and with cable components and their associated tools and equipment. You will be required to demonstrate safe working practices throughout, and will understand the responsibility you owe to yourself and others in the workplace.
Your responsibilities will require you to comply with organisational policy and procedures for the safe installation of the earthing, bonding and the associated terminating and connection activities to be undertaken and to report any problems with the component parts, equipment or installation activities that you cannot resolve, or are outside your permitted authority, to the relevant people. You will be expected to work on defined tasks under the direction of a specified competent individual.
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 complete activities under the direction of competent personnel, using the correct tools and equipment
P3 follow the relevant renewal, installation or enhancement documentation for the earthing and bonding components to be renewed or installed as directed
P4 carry out the installation activities within agreed timescale using approved materials and components and methods and procedures and under direction
P5 undertake activities within the limits of authority, following recording, reporting and escalation procedures
P6 assist with the production of accurate records of work undertaken
Knowledge and Understanding
You need to know and understand:
K1 the relevant health and safety regulations, directives, guidelines, and safe working practices and procedures as defined by your organisation
K2 industry protocols relating to communication of important safety information
K3 what procedures need to be followed, to confirm operational and personal safety, is maintained during the work
K4 the system of work associated with safe access and the procedures associated with working under isolated conditions of the OLE
K5 how to avoid personal injury during the work
K6 the hazards associated with working with rail and road/rail machinery
K7 the personal protective equipment (PPE) that you need to use for the activities that you are undertaking
K8 the general electrical hazards associated with working on and around overhead line equipment
K9 the hazards associated with earthing and bonding activities (such as working at height, drilling holes, cutting and terminating cables) and how the risks can be minimised
K10 the correct methods of moving, lifting, handling, shaping and supporting cables and associated components
K11 the purpose of engineering specifications associated with OLE equipment (such as overhead line specifications, work/task instructions, inspection/test plan)
K12 the purpose for the different types of design drawings used in OLE wire installation (such as layouts and cross section diagrams and OLE system design range (such as OLEMI))
K13 how the OLE is designed to function under normal operating conditions
K14 what each of the earthing and bonding component parts contribute to the overall operation of the OLE and how it interfaces with the signalling system
K15 how to identify the correct type and size of earthing and bonding cables required
K16 the basic principles of the electrical checks to be carried out on the earthing and bonding cables
K17 what terminology and methods are used to identify OLE earthing and bonding and to describe the operational status of the cables
K18 tools, plant and equipment used in the earthing and bonding installation process and how to use them
K19 the torque loading requirements of the components or connectors and what to do if these loadings are exceeded or not achieved
K20 the types of bonding systems used (such as Miles Royston (Glenair), Cembre)
K21 the types of tools and equipment used to shape, position, adjust, terminate and secure the installed components (such as drills, presses, pullers, torque wrenches)
K22 what equipment operating and care and control procedures are applicable to OLE equipment
K23 the methods of securing the installed earthing and bonding components and connections
K24 what inspection and testing procedures need to be completed prior to handback
K25 what authorisation procedures are and the limits of your responsibility and authority
K26 the procedures for documentation, control, reporting, and escalation within your organisation
Scope/range
Scope Performance
Activities carried out during the installation will include the following:
- adhere to safety briefing instructions, risk assessments, control of substances, safe system of work and other relevant safety standards
- obtain authority before carrying out the installation activities and follow the directions given
- leave the work area in a safe condition
Types of personal protection equipment could include:
- safety harnesses
- safety helmets
- approved high visibility clothing
- approved safety footwear
- gloves
- safety eyewear
- ear protection (as appropriate)
- other specific equipment
Types of earthing and bonding activities carried out under direction could include the following:
- cutting required length of bond
- termination of bond connections
- installation of bonds in the correct sequence
- correct use of tools and equipment
- assist with electrical continuity testing (as appropriate)
- removal of temporary bonding (as appropriate)
Types of bonding systems to be installed or renewed under direction could include:
- Miles Royston (Glenair)
- Cembre
- other specific system type
Checks on the earthing and bonding being installed under direction could include the following:
- assist with checking that the installed bonds comply with the installation specification
- making visual checks for completeness and freedom from damage
Recording and reporting procedures could include the following:
- installation record
- hand over document
- other specific recording document