Discussion on the most annoying issues in daily work
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Dear marine friends, in the daily maintenance process, what are those tasks that require the most work, are repeated the most often, and for which problems keep arising yet cannot be completely resolved? Let’s all speak up and discuss it together, pooling our ideas to find good approaches and methods that can free us from complexity and allow us to truly enjoy the pleasures of technology. Please feel free to speak up; great contributions will bring surprises!
1. The pressure gauge does not return to zero... It cannot be calibrated during regular inspections； 2. There are too many system alarms on the DCS… This is caused by changes in the production process involving startups and shutdowns, and the experts require that all alarms must be addressed. 3. The explosion-proof sealant keeps failing – it gets sealed in place but then falls off after some time ； 4. Temporary wiring causes trips due to one or two accidents each year.
The unit stopped due to interlock; according to the SIS system records, it was caused by process or equipment issues, but neither the process nor the equipment acknowledges this, and the true cause cannot be determined; thus, the fault is attributed to the instruments.
:Lol then you need to provide sufficient evidence to prove that there are issues with the process or the equipment. In fact, in analyses of the reasons for shutdowns in chain operations, equipment failures account for about 40%, improper process operations account for another 40%, while problems related to the instruments themselves make up only about 20%
That’s the situation: it forces those of us in the instrumentation field to study manufacturing processes and research equipment intensively. When it comes to analyzing problems, things get chaotic. Of course, there is a strong motivation for different fields to learn from each other, but it’s still frustrating!
You are absolutely right; most large-scale interlock trips are caused by process or equipment issues. However, to conduct a proper analysis and provide evidence requires high standards from the instrument operators.
Hydrogenation valves are prone to internal leakage; Memosynlan
Various unknown faults in the DCS system, frequent malfunctions of the double-flange level gauges used for measuring black water and gray water in the gasification process, short maintenance intervals, and a shortage of personnel, among other issues