Shut Down Equipment Item
At the completion of this topic the learner must be able to shut down an item of equipment.
When shutting down an equipment item for inspection or maintenance, the correct type of shutdown must be used and the Standard Operating Procedures for the appropriate shutdown must be strictly followed.
During a shutdown, system checks should be made to ensure the shutdown proceeds safely.
Typical checks during a shutdown could include:
- equipment cools down at a safe rate to prevent thermal fractures
- the correct valve sequence is followed to depressurise and purge equipment and lines
- shutdown valves close at the appropriate time to isolate equipment from process flows and utilities
- lube oil pressure is maintained during the rundown period
- valve status is correct at the completion of the shutdown
- all process flows are maintained at required values, by use of standby or alternative equipment.
Send to Tutor Activity OPS200A-54-1
When equipment such as a water cooled pump, is shutdown for maintenance or inspection you must be careful that you follow all of the steps in the Standard Operating Procedures.
Give one reason why each of the following is important during the shutdown.
- The coolant flow is maintained for a period of time after the pump is shutdown.
- The lube oil pressure is reduced only after the pump has come to a complete stop.
- The correct valves sequence must be followed for all process lines.
- Upstream and downstream unit operators and utilities suppliers are informed before you proceed with the shutdown.
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PMAOPS200A Operate an Item of Equipment Start Up Item of Equipment Monitor Equipment Operation Change Production Rates and/or Product Grade/Specification Carry Out Maintenance Procedures Shut Down Equipment Item Types of shutdown Shutdown warnings Changeover of equipment Equipment shutdown Emergency shutdowns Preparing a plant for startup Maintenance shutdown Assessment tasks Controlling Hazards in Work Area Respond to Plant Problems