Elements and Performance Criteria
- Prepare to install major components and associated equipment.
- OHS procedures for a given work area are identified, obtained and understood through established routines and procedures
- Established OHS risk control measures and procedures are followed in preparation for the work.
- Safety hazards which have not previously been identified are reported and advice on risk control measures is sought from the work supervisor.
- The nature of work is obtained from documentation or from work supervisor to establish the scope of work to be undertaken.
- Component and equipment installation is appropriately sequenced in accordance with job schedule.
- Sources of materials that may be required for the work are accessed in accordance with established routines and procedures.
- Tools, equipment and testing devices needed to carry out the work are obtained and checked for correct operation and safety
- Install major components and associated equipment.
- Established OHS risk control measures and procedures for carrying out the work are followed.
- Circuits / machines/plant are checked as being isolated where necessary in strict accordance with OHS requirements and procedures
- Components and equipment are installed to comply with technical standards, job specifications and requirements with sufficient access to affect electrical and pipe work connections and maintenance.
- Components and equipment are installed straight and square in the required locations and within acceptable tolerances
- Pressure testing is conducted at a pressure compatible with carbon dioxide and in accordance with standards
- Leaks are located and rectified using testing methods appropriate to the system and in accordance with industry practices
- System is evacuated to the required level and cleaned of all moisture and other contaminants in accordance with industry practices
- System is charged safely with refrigerant grade carbon dioxide and compatible lubricants in accordance with industry practices
- Established procedures are used to determine actual and specified range of operating conditions from measured and calculated values as they apply to carbon dioxide vapour compression and volatile secondary (liquid recirculation/cascade) systems.
- Established methods for dealing with unexpected situations are discussed with appropriate person or persons and documented.
- Unexpected situations are dealt with safely and with the approval of an authorised person.
- Operating conditions are determined without damage to apparatus, circuits, the surrounding environment or services and using sustainable energy practices.
- Complete Installation and commissioning work and document performance data
- OHS work completion risk control measures and procedures are followed.
- Final check of the installed components and equipment is made to verify that it complies to all requirements.
- "As - installed' components and equipment is documented and an appropriate person or persons notified in accordance with established procedures.
- Commissioning work is appropriately sequenced in accordance with job specification
- Appropriate personnel are consulted to ensure the work is coordinated effectively with others involved on the work site.
- The extent of the system and location of system components is determined from site inspection and/ or job specifications and diagrams
- System control settings and operating parameters are determined from job specifications and requirements
- Tools equipment and testing devices needed to commission a carbon dioxide refrigerant system are obtained and checked for correct operation and safety
- Pre commissioning checks are undertaken to ensure all components are in place and secure
- The need to test or measure a live operating CO2 system is determined in strict accordance with OH&S requirements and when necessary conducted within established safety procedures.
- Carbon Dioxide refrigeration system pressure controls, valves, pumps and regulators are adjusted to their required settings.
- Testing /measuring devices are used to observe the operation of refrigeration system and fine adjustments of controls are made as necessary.
- Established methods for dealing with unexpected situations are discussed with appropriate person or persons and documented.
- Unexpected situations are dealt with safely and with the approval of an authorised person.
- Commissioning is conducted efficiently without waste of materials or damage to apparatus and the surrounding environment or services and using sustainable energy practices
- Work site is cleaned and made safe in accordance with established procedures
- Results of commissioning are documented, including final operating parameters of the system.