Essential Knowledge and Associated Skills EKAS This describes the essential skills and knowledge and their level required for this unit Evidence shall show that knowledge has been acquired of erecting transmission towers and associated hardware All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies KSTTPA Overhead transmission network infrastructure KS01-TTP34A Overhead transmission network infrastructure Evidence shall show an understanding of the installation and maintenance of overhead transmission network infrastructure to an extent indicated by the following aspects T Mathematics techniques encompassing Calculations involving fractions decimals ratios proportions Calculations involving area volume mass and density Calculations involving transposition and substitution of formulae Calculations involving simple trigonometric problems T Engineering mechanics encompassing Identification of basic concepts principles and applications Application of velocity acceleration force density torque and pressure Applications of the SI units The relationship between work power and energy Behaviour of object under force using a block and tackle under load concept of mechanical advantage determination of resultant forces and determining the sag in a catenary conductor and the force applied at each end Fundamentals of the basic laws of fluid mechanics T Materials properties encompassing Identification and classification of engineering materials material properties Types and applications properties of tensile strength effects of temperature on the expansion of metals ductibility malleability work hardening and annealing and the conditions that lead to corrosion and the properties of timbers T Basic rigging techniques encompassing Standards codes legislation supply authority regulations and or enterprise requirements associated with rigging including the operation of cranes hoists and winches and relevant certification and licensing if required Requirements for the use of enterprise construction manuals system diagramsplans and drawings Safe use of rigging equipment tools and associated equipment types techniques and application Site inspection procedures identifying hazards assessing and controlling risks appropriate sequence of loading and unloading Determining the mass and dimensions of load Selection and inspection procedures rigging equipment materials and tools natural and synthetic fibre ropes and chains fittings winch and capstan ratings of wire ropes and slings removing repairing and replacing of damage parts Techniques for assembling and erecting power winches and capstans Checking the integrity of support structure visual inspection of load connections Techniques in moving lifting shifting managing and placing loads use of appropriate communication and signalling methods codes of practicecompliance enterprise and Commonwealth StateTerritory legislative requirements weather conditions erection of safety nets and lines methods of fixing and anchoring loads load stability T Procedure in providing store support encompassing Classification and identification of equipment components and tools Procedures for purchasingordering items removingdispatching items stocktaking security bookkeepingrecord keeping Material handling warehousedepot storage techniques handling equipment pallet lift trucks forklifts cable drum handling equipment Safety procedures storage and care of safety equipment handling hazardous materials storage of hazardous substances and dangerous goods depot safety procedures Manufacturers and suppliers information including material safety data sheets MSDS T Generation systems encompassing Methods of generating electricity types of power stations and reasons for their location layout of thermal and hydroelectric power stations Relationship between power control and load requirements operating speeds for thermal and hydroelectric generating sets typical generator voltage levels and output ratings The purpose and features of typical types of cogeneration systems T Transmission distribution and rail systems encompassing Relationship between the transmission distribution and railtram system within an overall power system different organisations responsible for generation transmission distribution and railtram and how they correlate and their functions Characteristics of a transmission a distribution and a rail system principal components typical voltage levels and methods of transmission and distribution including grid type transmission systems radial parallel and ring main feeders Relationship between an overhead and underground supply systems within an overall power system advantagesdisadvantages applications and the basic steps for planning and installing an overhead and underground distribution system Single line drawings and layouts drawings and layouts of transmission and distribution systems including radial parallel and ring main feeders and the HV equipment associated with substations T Substations power transformers and reactors encompassing Relationship between the substations within an overall power system purpose location in relation to load centres layout of HV equipment within the substation and auxiliary equipment Characteristics of a power transformer basic construction of distribution transformers operation under loadno load conditions types and basic operation of tap changing switches including solid state types efficiency and cooling Auxiliary equipment used on transformers function and basic operation of equipment Maintenance of a power transformer basic connections restrictions to parallel operation problems and remedies associated with harmonics testing and fault finding procedures Description purpose and characteristics of a reactors T Installation of poles and or structures and hardware encompassing Standards codes legislation supply authority regulations and or enterprise requirements applicable to installing poles and associated hardware Requirements for the use of enterprise construction manuals system diagramsplans and drawings Characteristics and applications of different types of poles and associated hardware Techniques for installing poles and associated hardware types of installation equipmenttools excavation methods types of footingsfoundations types of attachments earthing systems clearances between conductors Safe methods of erecting and stabling poles and or structures and cross arms Techniques for maintenance of poles and associated hardware stabilisation techniques for unstable poles Methods of strengthen poles maintenance and replacement of high voltage insulators and cross arms T Transmission structures and hardware encompassing Requirements for the use of enterprise construction manuals system diagramsplans and drawings Types of structures Types and function of associated hardwareequipment and insulators Types of conductors Location of transmissions structures Other equipment used on transmission structures eg aircraft warning devices T Procedures for routine maintenance on transmission structures and hardware encompassing Procedures for gaining access permits Reasons for gaining access Types of maintenance procedures on transmission structures procedure to follow for inspectionpatrols according to the Transmission Supply Authority Erecting and removing of transmission equipment and hardware from a tower climbing procedures square rigging principles calculation of forces at work within a given square rigging system construction of a square rigging system Procedures for changing insulators vertical angle suspension strain insulator post insulator horizontal or vertical and bridge insulator calculation of conductor forces Installation of temporary work platforms types and function of installation tools and equipment precautions and work methods to follow procedures for installations of temporary work platforms Installation of conductor protective hardware types and selection of common dampers tools and equipment control of Aeolian vibration procedures for the installation of dampers onto conductors Dead line insulator washing Supply Authority regulations procedure for washing deenergised transmission lines T Procedures for installation and maintenance on transmission lines structures and hardware encompassing Standards codes legislation supply authority regulations and or enterprise requirements pertaining to the installation and maintenance of transmission lines and associated equipment Requirements for the use of enterprise construction manuals system diagramsplans and drawings minimum construction clearances for transmission lines sagtension requirements Construction types and structures used in transmission lines Types sizes and characteristics of transmission conductors aluminium conductors steel reinforced and earthing conductors Types of electrical connections used to connect transmission conductors compression termination and bolted termination Causes and effects of poor electrical connections Types and application of specialised tools equipment and hardware for the stringing of transmission conductors Techniques for stringing tensioning and terminating transmission conductors Techniques for installation of associated hardware used on transmission towers Techniques for maintenance of damage transmission conductors repair and replacement T Safe working practices and procedures for the installation of overhead transmission conductors encompassing Limits of approach for personnel vehicles mobile plant and elevating work platforms EWP Requirements of persons prior to making bare hand contact with dead low voltage mains and apparatus Requirements of relevant electrical access permits necessary to allow work to be performed on low and high voltage apparatus Safe working practices requirements to enable safe working on conductive poles procedure to attach an onsite earthing device to deenergised low and high voltage overhead circuit safe working practices when working with associated hardwareequipment and insulators precautions of voltages on transmission structures dangers when working at heights identification of hazards assessing and controlling risks types selection maintenance and uses of personnel protective equipment permit to work systems and isolation procedures safe working practices when using specialised equipment Emergency response and rescue including First Aid etc T Powerline safety practices encompassing Protective apparatus and apparel for linework responsibilities for the selection use maintenance and storage of protective apparatus and apparel and the types of protective apparatus and apparel used for the line worker Requirements for the use of ladders carrying erecting collapsing and lowering different types of extension ladder against a standing pole maintenance checks on different types of ladders renewal of extension ropes and the safety issues relating to clearances from overhead conductors Requirements for climbing and working aloft methods used to identify a pole is safe to climb methods used to inspect a line workers body belt application of knots and hitches appropriate to the requirements of a line worker height safety principles including personal fall protection prevention and related requirements and the practical procedure of climbing an overhead structure and fitting a pole chair Traffic management purpose of traffic management and a line workers responsibilities in accordance with relevant statutory requirements and electricity supply industry requirements demonstration of the procedure used to provide an effective traffic management scheme and the use of a twoway radio Control of small fires identification selection and operation of the appropriate extinguishing mediums for various types of fires general fire prevention methods and the precautions for personal protection when fighting small fires Rescue victims from heights and confined spaces planning identifying the procedures and establishing responses developing techniques involvement of external emergency services and practical demonstrationrehearsals of rescuing a person from heights and from confined spaces and emergency procedures for the rescue of an electric shock victim including CPR Requirements for aerial linework planning establishing and implementing relevant aviation authority clearances determining system requirements aircrew familiarisation with network operations and equipment requirements for effective communications operations for aerial work |