Elements and Performance Criteria
- Establish range of utilities and services used by mill
- Identify distributed services used in mill
- Ensure schematics showing location and distribution of services are available and understood by key personnel
- Categorise services as critical to mill operation or ancillary according to workplace procedures
- Develop contingency strategies in the event of utilities and services requiring maintenance or repair
- Review mill electric power system for start-up and power demand management
- Identify mains supply terminal, input voltage and electricity supplier
- Identify mill transformers and distribution to sub-mains
- Identify back-up generation and supply system, including automatic and manual operation conditions
- Identify location of mill equipment and areas supplied by each sub-main and switchboard
- Recognise key features and requirements of installed electrical safety systems, including lock off and isolation switches
- Obtain maximum demand and diversity factor (power factor correction) and identify implications for mill operations
- Establish motor control and start-up procedures according to manufacturer, engineer and supply authority procedures
- Establish scope of hydrocarbon fuel use by mill
- Establish type and location of mill controls
- Identify mill operations and equipment controlled automatically
- Identify mill operations and equipment controlled through central process control stations/terminals
- Identify mill operations and equipment controlled manually
- Determine back-up strategies for mill control in the event of failure of control equipment
- Control pneumatic conveying system
- Determine processes where negative or positive pressure is required
- Monitor air speed and volume requirements for conveying tasks
- Select air speed and volume appropriate for exhausts
- Balance negative pressure systems according to mill operation procedures
- Monitor for abnormal increases in blow-line pressure
- Determine cleaning intervals for dust collectors
- Control wheat damping and conditioning
- Establish strategies and practices for efficient use of power and automation