I would like to ask everyone: what is the approach to dealing with instrument-related issues?
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I’m a beginner; I work in a factory doing instrument maintenance. Sometimes I encounter problems that I don’t know how to handle. Could anyone give me some proper guidance on how to deal with them? Thank you all in advance
Following the master for one or two months is sufficient
To understand the working principle of the instrument, it is necessary to determine the possible causes of faults based on that principle and the symptoms of the faults. It is also necessary to understand the manufacturing process, as many problems arise from changes in this process.
When dealing with faults, work from the outside in and from the inside out, starting with simple steps before moving on to more complex ones； First, check whether the wiring is in good condition, whether there are any leaks at the connections, if there is any interference, and whether there have been any changes in the manufacturing process; only then should internal faults of the instrument be examined.
By checking each component one by one, it can be seen that the failure rate of DCS systems is generally low; problems are more likely to occur with the field sensors (detecting elements), cables, and connections, as well as when the process deviates from its designed conditions.
Sort out the issues on the spot; take your time. The more you see it, the clearer things will become……
Approaches and methods for dealing with instrument problems: (1) First, obtain information from the operator, and then examine the instrument fault. (2) First, check the instruments displayed in the control room, and then inspect the instruments on-site. (3) Start with simpler problems before addressing more complex ones. (4) First, examine the instruments on-site, and then check those displayed. (5) Pay special attention to the external circuits and pipelines of the instruments. (6) First, inspect visible areas, and then check hidden areas. (7) First, configure the software, and then check the hardware. Note: The above headings are taken from the book “Essentials for Instrument Operators” published by the Chemical Industry Press.