In your field, there are aspects of process design that could be optimized or that are often criticized

There are many such cases – mistakes resulting from design issues that lead to unavoidable problems in production; I’ve experienced them personally: 1. Poor communication between the equipment specialists and those in charge of piping design; the positions of the pipe connections on the equipment did not match those shown in the piping diagrams. Due to delays in equipment delivery, the pipes were prefabricated in advance. When the equipment arrived, it turned out that the pipe connections were incorrect – the inlet was fine, but the outlet was angled at 135 degrees. It was a high-temperature, high-pressure reactor, and changing the outlet pipeline involved more than just adding a few bends. In the end, after much calculation, it was possible to make it work, and an outlet pipeline with a twisted shape was installed on site... 2. High turnover among designers working on a given project; seven or eight different people were involved in the piping design, which led to chaos on site. For example, for the pump outlets, the piping diagrams showed that the outlet pipes for both pumps (one in use and one as a backup) should point to the left. But on site, because the pipes were too thick and the distance between the pumps was too small, the pipes got intertwined... 3. A newly graduated designer, when designing the pipelines for the utility corridor, failed to take into account the necessary space for insulation, resulting in a lot of extra work needed later for insulation... 4. Poor communication between those in charge of piping design and those in charge of structural design; after installation, many pipes ended up below ground level... 5. There were also issues related to the insulation around the cooler’s inlets and outlets, as well as the design of cable trays – these changes kept happening, causing delays and wasted effort on site. Designers often relied too much on regulations, without understanding how to adapt to circumstances or interpret those regulations properly, leading to huge waste of resources... Honestly, design is a very challenging job. Some designers even never see the actual devices they design, and don’t know what certain pieces of equipment look like. Errors are inevitable, but if those errors can be turned into lessons learned, then it’s still considered a success: lol

Here’s a story about ladder systems on platforms: I worked on a project where the design team connected eight distillation tower platforms together. Each platform couldn’t lead directly to the top of its own tower; one had to walk back and forth between the eight towers. At the start of work, walking around those platforms was like navigating a maze. In the end, no other choice remained than to have the workers place signs on the ladders leading to each platform, indicating which way to go to reach that particular tower. It was quite a funny design, really. Moreover, the design of the platform locations is also unreasonable; many high-altitude feeding points and return ports lack platforms or are located outside them. When pressurization testing begins, scaffolding has to be set up externally, causing repeated inconvenience.

I also encountered a situation where the design firm installed minimum flow settings for all the pumps. In that facility, there were dozens of pumps, and the pump outlet pipelines were extremely dense; yet none of those settings were actually used, as the medium in question was lightweight oil and gas. There were several leaks that occurred later on. It can be said that the design firm prioritized safety to such an extent that they didn’t consider anything else. As for the design of blind flanges, many design firms don’t take this into account – they place them at very high positions. When maintenance is required and blind flanges need to be added, the distance between the pipelines isn’t sufficient, which makes things extremely troublesome. Moreover, the size and pressure rating of the temporary blind flanges often don’t match what’s needed, so it’s necessary to go through a lot of hassle each time, dealing with various blind flanges. I truly believe that blind flanges are essential in areas that require frequent maintenance

The small MVR unit we designed to treat gold refining wastewater did not take into account the high temperature of the wastewater, which causes excessive foaming; moreover, the distance between the gas phase defoamer and the liquid phase in the separator was insufficient. Finally, when the compressor was turned on, it drew in the material immediately, causing the current flowing through the compressor to surge and triggering an emergency stop alarm; as a result, the compressor could no longer rotate. Later, the rotor was rinsed with water, and things gradually returned to normal; fortunately, nothing serious happened to the compressor motor.

The pipes keep colliding with each other, which is really annoying

Is the tower very tall in this design, considering the swing amplitude?

For pipe selection, some materials can affect the color of carbon steel pipes when in prolonged contact with them; nevertheless, carbon steel pipes are still the preferred choice

If heating pipes are to be used for the heat tracing system, be sure to prepare a detailed heat tracing diagram and follow strict construction standards; otherwise, after the insulation work is completed, well, you know what happens ? ? ?