||Chem Excellence: Foundations for Excellence in the Chemical Process Industries
14.5 Provide Routine and Preventive Maintenance and Service Provide Routine
Tasks conducted by PTOs related to this critical job function include:
- Read and follow all SOPs associated with the maintenance of the processes, equipment, and instruments before starting any work.
- Observe, communicate, and record any deviations from normal operations of processes, equipment, and instrumentation.
- Initiate work requests.
- Implement and develop, if necessary, a preventive maintenance schedule.
- Inspect equipment.
- Prepare equipment for maintenance.
- Follow maintenance schedule developed by plant personnel.
- Open lines and equipment.
- Change seals and valves on on-line equipment.
- Change seals and packing on pumps and valves.
- Change and replace pipes as required.
- Check fluid levels in process equipment.
- Perform vibrational analysis.
- Perform steam tracing techniques.
- Test and replace pressure release valves as needed.
- Calibrate instruments and check standards.
- Troubleshoot problems in processes and instrumentation as required.
Technical Performance-based Skill Standards
For this critical job function, entry-level PTOs are expected to:
- Describe the types of maintenance and the importance of planned, preventive maintenance.
- Use a variety of in-line instruments common to the process industry, including but not limited to, those that measure gas and liquid concentrations, pH, and conductivity.
- Observe deteriorating conditions in process operations using both human senses and instrument readings.
- Define terms used to characterize instruments and describe components and operations.
- Recommission instruments, by providing routine maintenance and by troubleshooting a variety of problems.
- Determine when maintenance is required in a variety of situations.
- Use a variety of on-line control equipment.
- Describe vibrational analysis techniques and their application to plant maintenance.
- Recognize abnormal operation of sensing elements used for temperature, pressure, flow, level, and other measurable properties.
- Describe feedback loops and the relationship between a controller and the sensing element.
- Recognize possible causes of failure.
- Identify at least six different kinds each of pumps and valves and be able to commission and decommission each one, including completing appropriate documentation.
- Recognize inefficient mixing and suggest corrective
- Demonstrate the ability to change and repack valves and other fittings.
- Set up a maintenance schedule according to good process management standards.