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Elements and Performance Criteria

  1. Prepare for the calibration of custodytransfer metering or gas quality measuring equipment
  2. Relevant measuring equipment requirements and workplace procedures for equipment work are communicated to appropriate persons
  3. WHS/OHS, environmental and sustainable energy policies and workplace procedures related to work to be performed are obtained, confirmed and communicated
  4. Work is prioritised and sequenced following consultation with person/s for completion within acceptable timeframes and in accordance with workplace procedures
  5. Risk control measures for identified hazards are prioritised, implemented and monitored against the work schedule
  6. Relevant work permits are obtained to access, isolate/de-energise systems and perform work in accordance with workplace requirements and procedures
  7. Resources, equipment, tools, calibration gases and personal protective equipment (PPE) required to conduct work are obtained and confirmed to be in working order
  8. Measurement equipment is tested and calibrated within calibration tolerances in accordance with relevant industry standards and workplace procedures
  9. Liaison and communication with authorised persons, authorities, clients and land owners are undertaken to resolve issues and coordinate gas work activities
  10. Persons participating in work are fully briefed and respective responsibilities confirmed, as required, in accordance with workplace procedures
  11. Inspect, validate and calibrate custody transfer metering and gas quality measuring equipment
  12. Dealing with customers is consistent with workplace procedures and the specific needs of customers are identified and considered in targeting client service
  13. Inspection, validation and calibration of custody transfer metering and gas quality measuring equipment is undertaken to ensure completion in an agreed timeframe and to industry quality standards with a minimum of waste in accordance with workplace requirements
  14. Routine inspections of system are scheduled and monitored in accordance with the work schedule and workplace procedures
  15. Hazard warnings and safety signs are recognised and hazards are assessed WHS/OHS risks are reported to the authorised persons for directions in accordance with workplace procedures
  16. Measuring equipment is calibrated against relevant industry standards using correct calibration devices, equipment, techniques and are undertaken within the scope of workplace procedures
  17. Deviations of measuring results are resolved in accordance with workplace procedures
  18. Ongoing checks of gas quality are undertaken in accordance with given instructions and workplace procedures
  19. Return to operational service of custody transfer metering and gas quality measuring equipment
  20. Anti-tamper seals are replaced and tagging removed in accordance with workplace procedures, as required
  21. Work completion records, reports and documentation are finalised and processed and appropriate persons notified

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the Companion Volume Implementation Guide.

constants and variables must include the following:

calibration skills used in the setting, adjustment, calibration validation or verification of instrumentation sensors

measurement principles

gas chromatography

recording and reporting

equipment

organisational and statutory requirements

auxiliary control system must include the following methods:

wide open monitor operation

two stage pressure reduction with monitor override

competency must include the following device:

remote terminal unit (RTU) control of regulators

operation and maintenance of pressure controllers, operation, maintenance must include at least two (2) of the following:

commissioning/setting

troubleshooting

pressure boosters minor repairs

types/models

regulator must include at least two (2) of the following:

sleeve types

control valves

diaphragm types

hydraulic plug types

valve maintenance and operation must include the following:

ball, plug, gate instrument and butterfly valves

metres must include at least three (3) of the following:

diaphragm meters

rotary meters

turbine meters

ultrasonic

orifice plates

coriolis

oil changing

tools/equipment procedures must include at least three (3) of the following:

operational checks

single run units

dual run units

city gates

district regulators

field regulators

full maintenance activities

tools/equipment/procedures must include at least three (3) of the following:

pressure alterations

industrial units

city gates

regulator stations

distribution mains

tools/equipment/procedures must include at least three (3) of the following:

flaring and purging

industrial units

city gates

regulator stations

distribution mains

tools/equipment/procedures must include at least three (3) of the following:

overpressure protection systems function and operation (OPSO)

internal pressure relief systems

pressure relief valves

slam shut systems

valve actuator and control systems

documentation/paperwork must include the following:

risk assessments

completing work sheets

notifications and work permits

equipment checklists

meter bypass forms

service orders

pressure recording charts