Carry out routine inspection and servicing on substation emergency services

Transcription

1 Page 1 of 6 Carry out routine inspection and servicing on substation emergency services Level 3 Credits 4 Purpose People credited with this unit standard are able to: prepare for inspection and servicing on substation emergency services; prepare auxiliary equipment and systems for trial operation; carry out inspections; carry out test operations; carry out servicing; document inspection and servicing; and return equipment to stand-by service. Subfield Domain Status Electricity Supply Electricity Supply - Power System Maintenance Registered Status date 27 April 1998 Date version published 20 June 2008 Planned review date 31 December 2009 Entry information Prerequisites: Unit 14287, Use and maintain test instruments used within the high voltage electrical industry; Unit 14700, Apply and remove safety measures in an electricity supply environment; Unit 12296, Apply earths to and remove earths from electrical conductors, plant and equipment; or demonstrate equivalent knowledge and skills. Core electrical theory is essential knowledge underpinning the performances required in this unit standard. Accreditation Standard setting body (SSB) Evaluation of documentation and visit by NZQA and industry. Electricity Supply Industry Training Organisation Accreditation and Moderation Action Plan (AMAP) reference 0120 This AMAP can be accessed at

2 Page 2 of 6 Special notes 1 This unit standard can be assessed against in a workplace environment, or in a training or educational environment if simulated equipment response and examples are able to be provided, or in a combination of both environments. 2 Performance and work practices in relation to the elements and performance criteria must comply with all current legislation, especially the Electricity Act 1992, and any regulations and codes of practice recognised under that statute; the Health and Safety in Employment Act 1992; and the Resource Management Act Electricity supply industry codes of practice and documented industry procedures include the Safety Manual Electricity Industry (SM-EI) (2004) Wellington: Electricity Engineers Association. A full list of current legislation and industry codes is available from the Electricity Supply Industry Training Organisation, PO Box 1245, Hamilton. 3 The phrase in accordance with industry requirements is implicit in all elements and performance criteria in this unit standard. 4 Industry requirements include all industry and workplace documented policies, procedures, specifications, and business and quality management relevant to the workplace where assessment is carried out. 5 All work practices shall meet documented enterprise maintenance standards, including the quality management requirements, and the documentation of activities, events, and decisions. 6 The range of this unit standard is limited to carrying out routine inspection and servicing on emergency service systems such as standby generators, fire pump protection systems, and oil interceptor systems, at electricity supply substations. 7 The following terms and abbreviations relate to this unit standard: AS/NZS = Australian/New Zealand Standard. Elements and performance criteria Element 1 Prepare for inspection and servicing on substation emergency services. 1.1 The scope of work and equipment being serviced are identified and the required documents are selected. may include but is not limited to associated check and/or inspection lists and procedures, manufacturer s guidelines and client servicing standards for - fire fighting, alarm, control and pumping systems, auxiliary power generators, emergency lighting, oil spill interceptor systems, fuel tank level gauge, AS/NZS 3000:2007 Electrical Installations Australian/New Zealand Wiring Rules.

3 Page 3 of The required work control system or approved equivalent is received. 1.3 All safety measures are in place to eliminate, minimise, or control hazards during inspection and servicing. may include but is not limited to - inspection of the safe working zone, the safe work area has been correctly delineated and provides a safe work environment, appropriate isolation from inservice equipment or services. Element 2 Prepare auxiliary equipment and systems for trial operation. 2.1 Systems are started up and shut down in accordance with manufacturer s operating instructions. may also include maker s and/or client s requirements. 2.2 Prior to start up, systems are prepared and tested in accordance with manufacturer s operating instructions. may include but is not limited to maker s and/or client s requirements. 2.3 Systems are started, and gauges and instruments are monitored and checked to ensure compliance with manufacturer s operating instructions. may also include maker s and/or client s requirements. 2.4 Systems are managed to maintain efficiency of the system operation and to avoid damage to the systems. may include but is not limited to maker s and/or client s requirements. 2.5 Safety procedures are followed during the start up process and operation of the system. may include but is not limited to maker s and/or client s requirements.

4 Page 4 of 6 Element 3 Carry out inspections. 3.1 Data from monitoring systems relating to the start up or shut down are recorded according to prescribed procedures. may include but is not limited to - power supply voltage, battery voltage, load current, pressures, volume measures, water supply. 3.2 All inspection results are assessed for indication of servicing needs. may include but is not limited to - start up battery, low charge, engine temperature status, cooling system, water supply, fuel supply, corrosion wear, damage, motor mountings, fuel filters, air filters, lubrication, electrical connections, cleanliness, remote alarm, diagnostic tests, winding insulation resistance, motor compression measured. Element 4 Carry out test operations. 4.1 The equipment is test operated in accordance with selected procedures. may include but is not limited to - selecting trial start mode, pre start up checks and isolations. 4.2 The equipment is run for the prescribed period. may include but is not limited to - running for period till stable operating conditions are reached, and voltage, current pressure, flow rate synchronisation. 4.3 Notes of key operating parameters are recorded and compared with equipment design performance. may include but is not limited to - supply load, current pressure, motor temperature, ease of starting. 4.4 The equipment is shut down in accordance with equipment prescribed procedures. may include but is not limited to - stopping the prime mover, restoring switches and valves to normal standby status.

5 Page 5 of All the inspection and test operation results are analysed for identification of servicing needs. Element 5 Carry out servicing. 5.1 All servicing needs are applied to ensure emergency services availability, and have design capacity. may include but is not limited to - start up battery recharge or replace, cause of defects investigated cooling, fuel supplies, synchronisation, load switching, activation, control, cleaning, corrosion correction. Element 6 Document inspection and servicing. 6.1 All test operation, inspection and servicing results are documented in compliance with selected documentation. may include but is not limited to - key indication and monitored valves, function results, system response time, supply valves, remote signal results. 6.2 All spares, materials used and future special maintenance requirements are recorded as required by selected documentation. may include but is not limited to - client s requirements, service contract requirements. Element 7 Return equipment to stand-by service. 7.1 Equipment is left in the approved stand-by state ready for service. may include but is not limited to - all switches, valves, controls and sensors set ready for service, notification of the end of testing operation and servicing provided to responsible operator. 7.2 The dates for next servicing of systems are recorded. may include but is not limited to reporting when the next scheduled service is required.

6 Page 6 of The equipment is formally reported as returned to service or stand-by status. may include but is not limited to - reporting all clear and return of work access permit or recognised equivalent, other work party staff advised of the equipment return to service, equipment returned to service without incident. Please note Providers must be accredited by NZQA, or an inter-institutional body with delegated authority for quality assurance, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment. Industry Training Organisations must be accredited by NZQA before they can register credits from assessment against unit standards. Accredited providers and Industry Training Organisations assessing against unit standards must engage with the moderation system that applies to those standards. Accreditation requirements and an outline of the moderation system that applies to this standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The AMAP also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements. Comments on this unit standard Please contact the Electricity Supply Industry Training Organisation info@esito.org.nz if you wish to suggest changes to the content of this unit standard.