After the heating coil of the equipment is damaged. . . . .
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I wonder, when dealing with equipment maintenance, if the external heating coil of the equipment – the type where half of the coil is welded to the tank body – becomes corroded and starts leaking, do people replace the entire equipment, or do they remove the corroded and leaking parts and replace those tubes? But if the pipes need to be replaced, welding will have to be done again, which in turn affects the performance of the cylinder – that’s a bit concerning. I wonder what methods various experts use in their actual work for repairs?
That’s the contradiction: afraid that the performance of the equipment will be affected, yet unwilling to spend money on replacing it with new equipment
It depends on the actual situation; for common containers, one can simply replace the pipes themselves. If it’s a pressure vessel, it’s best to purchase a new one
It depends on the actual situation; determining the extent to which replacing the heating coil will affect the performance of the cylinder doesn’t necessarily mean that the equipment has to be replaced.
Our designers recommended replacing the equipment, but the boss was reluctant to do so and insisted that our colleagues find a solution; it’s really tough on them.
This requires a case-by-case approach. First, it is necessary to check whether the thickness of the casing of the equipment at the location of the leak meets the minimum design requirements specified in the equipment’s drawings; if so, repair can be considered. Of course, the impact of welding on the equipment itself as well as issues related to heat treatment must also be taken into account. If the measured thicknesses do not meet the design requirements, it’s better to replace them – it’s a safety hazard……
There are potential risks, so just replace it. If something goes wrong, you’ll end up spending even more money
It depends on the actual conditions of the equipment and the heating coils themselves. Of course, it’s best to replace them with new ones. In that case, it’s necessary to find evidence to prove that the old ones can no longer be used. One should assess the overall degree of corrosion on the equipment, measure the thickness of certain areas after rust removal, and calculate whether the equipment can still be used based on the design specifications. It’s advisable to use a higher safety factor, as welding and corrosion can cause significant damage to the tank itself. Based on my personal principles, I recommend arriving at a definitive conclusion through measurements and calculations, so as to have solid evidence and confidence. If the user cannot provide quantitative measurement results, it’s possible to request that the work be redone on the grounds that the required conditions are not met and normal operation of the repaired equipment cannot be guaranteed. .
It depends on the actual situation; of course, the damage to the cylinder should be checked first, and if its strength permits, repairing it is much more cost-effective than replacing it. If it’s pitting corrosion, simply welding it will do. If the pipe is corroded or its wall strength is insufficient, it must be replaced. Of course, if the cylinder is made of a high-strength material, post-weld heat treatment as well as corrosion protection are also necessary.
I think this situation could perhaps be treated as a welding repair process during the manufacturing of containers; if there are issues with the quality of certain welds, a repair plan can be developed and followed strictly during the construction process. If the equipment has to be replaced due to a few instances of leakage, the cost is somewhat high; of course, this depends on the importance of the equipment and the operating conditions.