Hello members, I am currently working on a waste incinerator Unit with a flue gas flow rate of 400,000 Nm3/hr and am facing an issue with monitoring the ID fan. We are considering implementing a 2oo3 voting system for vibration monitoring. Currently, we only have sensors on both X and Y bearings, resulting in a 1oo2 trip when a certain threshold is reached. However, I believe a 2oo3 setup may not be feasible as vibrations detected on the X axis may not always correlate with those on the Y axis. One potential solution could be to install three sensors on both X and Y axes, but this could be expensive. Do you have any recommendations for implementing a 2oo3 vibration trip effectively? Your insights would be greatly appreciated.
Are you inquiring about bearings from 2003? Do you need information on whether they are white metal or rolling element bearings?
Thank you for your comment regarding the Rolling element bearing. When I refer to "2oo3", I mean a 2 out of 3 detection system. This means that we require at least two high levels to trigger the fan to trip. Therefore, if only one sensor surpasses the trip threshold, no action will be taken. While it is simple to install for temperature monitoring, implementing a 2oo3 system for vibration detection may pose some challenges. High vibration along the vertical axis may not necessarily translate to high vibration on the horizontal axis, potentially causing a failure to trip the system.
Thank you for your feedback. Do you regularly monitor readings for analysis on a monthly basis to proactively detect faults, or do you solely rely on overall vibration levels to trigger a shutdown when they surpass a predetermined threshold?
What are the benefits of transitioning from a "1 out of 2" to a "2 out of 3" plan? Making the switch to a "2 out of 3" plan offers greater feasibility and success compared to the previous plan. By carefully analyzing our goals, we can determine if the investment and risks are justified. What is driving this change and what are the potential advantages? Thank you and enjoy your day, Ralph.
When it comes to applying logic to bearings, it is important to use the 1oo2 method on a single bearing rather than on multiple bearings. With 1oo2 logic, if either the X or Y probe surpasses the trip value, the machine will trip. It is not recommended to use a logic that involves both probes on both bearings crossing the trip value simultaneously. Therefore, there is no 2oo3 logic implication since there are only 2 probes on a single bearing. It is impractical to install 3 X probes and 3 Y probes on one bearing. How could you even fit 3 X probes on a single bearing? - Nagesh
I agree that balancing cost and efficiency in implementing a 2oo3 vibration monitoring system can be tricky, especially since directions of vibration don't always correlate. However, if cost is a concern, it might be more practical to analyze your failure trends and determine if vibration issues more frequently occur on one axis or the other. You could then install an extra sensor on the bearing prone to more frequent or significant vibrations. Keep in mind, though, this might not completely eliminate the risk. Alternatively, you could explore advanced predictive maintenance devices that can deliver a comprehensive analysis of your machine health continuously, including various parameters, not just vibration. This could provide a more holistic overview of your ID fan's operational status.
Hi there! The 2oo3 voting system is generally a solid choice for improving reliability, but I definitely understand your concerns about the costs and complexities when applied to vibration monitoring on your ID fan. Another potential solution you might consider could be utilising a 1oo2D voting system, where a spare sensor on standby comes into play should the initial sensor fail. It might provide a middle-ground solution between meeting reliability requirements and keeping costs manageable. Also, consider analysing your vibration data in terms of overall trends as well as specific vibrations, this could help you to more accurately predict potential problems. As always, ensure your team is thoroughly trained in interpreting and responding to the data your sensors provide.
It sounds like you're tackling a complex issue! Instead of going for three sensors on each axis, which can definitely get pricey, consider using advanced vibration analysis techniques like envelope detection or using a single multi-axis sensor that captures vibrations in both directions. Some newer sensors come with built-in algorithms that can provide a more comprehensive view of the machine's condition and might even reduce your sensor count while improving reliability. Don't forget to also factor in regular maintenance checks for your existing sensors—sometimes recalibration can alleviate some of the discrepancies you’re seeing!
It sounds like you’re facing a tricky situation with the vibration monitoring! Since a full 2oo3 setup might not be practical budget-wise, have you considered using a combination of multi-axis vibration sensors that can capture data from both axes simultaneously? This way, you could still maintain redundancy without needing to triple the number of sensors. Also, implementing a smart monitoring system that utilizes data analytics might help detect potential failures from the patterns in vibration data you gather, providing insights even with fewer sensors. It’s worth exploring some cost-effective solutions that maintain reliability without compromising on safety!
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Answer: - A 2oo3 voting system means having two out of three sensors agreeing on a certain condition before triggering an alarm or shutdown.
Answer: - Implementing a 2oo3 setup enhances reliability by requiring multiple sensors to confirm an issue before taking action, reducing false alarms.
Answer: - One approach is to install three sensors on both the X and Y axes to ensure more comprehensive monitoring, albeit at a potentially higher cost.
Answer: - One challenge is the potential lack of correlation between vibrations detected on the X and Y axes, which may affect the effectiveness of the 2oo3 setup.
Answer: - One potential solution could be to explore innovative sensor placement or signal processing techniques that can optimize monitoring efficiency without significantly increasing costs.
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