Elements and Performance Criteria
- Determine control loop operating characteristics
- Engineering specifications, technical information and historical trends are examined for relevant data.
- System specifications, operational data and other relevant data sources are examined, read, interpreted and relevant conclusions are noted.
- Consultation with system operators and other relevant plant personnel is carried out, and relevant data is extracted and documented by appropriate means.
- Using knowledge of all control loop device characteristics, controller mode principles and adjustment methods, operation of the system is observed.
- Appropriate test equipment and testing procedures are used.
- Fault finding and diagnostic techniques are utilised.
- Relevant data is collected by appropriate means from all sources including maintenance records, fault indicators, charts, error codes operational symptoms, observation monitoring and consultation with appropriate personnel.
- Monitor and record operation of a control loop
- Pneumatic, electrical and electronic circuit diagrams are interpreted and understood.
- Using knowledge of all control loop device characteristics, controller mode principles and calibration/adjustment methods, loop operation from the controller response to set point and manual output changes using correct test equipment, principles and procedures are check tested and monitored.
- Software configuration data for digital control systems is interpreted.
- Operational responses are monitored and recorded by appropriate means.
- Fault finding and diagnostic techniques are utilised throughout checking and testing procedures including simple and multi-controller type control schemes.
- Diagnostic results and conclusions are analysed against predetermined operational specifications.
- Localise fault condition
- Circuits are tested to the level necessary to identify and localise faults.
- Drawings/diagrams and operational testing data are utilised in identifying and localising fault conditions.
- Fault condition is localised and verified to major component level using appropriate test equipment, principles and procedures.
- Replace or repair faulty condition
- Components are dismantled for repair or replacement using appropriate tools, equipment and procedures.
- Replaceable items are selected from manufacturers' catalogues, spare parts lists, or data sheets.
- Serviceable items are repaired using correct principles, tools, equipment and procedures.
- Repaired and replaceable items are reassembled using appropriate tools, equipment, techniques and procedures.
- Calibrate and adjust control instrumentation
- Panel mounted, split architecture single loop/multiple loop control instruments are calibrated and adjusted using correct calibration principles, equipment and methods for all devices according to manufacturers' instructions.
- Adjust controller modes and actions are adjusted according to specifications.
- Zero span and range checks are undertaken using correct and appropriate configuration.
- Correct and appropriate procedures, techniques, tools and equipment are used to make final adjustments to control instrumentation to specifications.
- Complete service reports and recommission