Issues related to the repair of leaks in internal heat transfer tubes
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Which sea user has experienced leaks in the internal heat exchanger tubes, and how was it handled?
It occurred once; due to severe catalyst leakage, it is likely that the particles were broken. The line speed was normal, and water vapor was suspected as the cause. During subsequent shutdown for maintenance, pressure testing of the internal heat exchange tubes revealed one leak point, which was replaced entirely····
How was it handled at that time?
At that time, the leakage wasn’t severe; it was only slightly higher than normal, and that was determined by analyzing the particles. Shortly after, maintenance work had to be carried out, so a special inspection was conducted, and it was confirmed that there indeed was a leak. At that time, the density inside the external heat exchanger changed significantly, and the fluidization wasn’t optimal···
Identify which set is leaking, and close the inlet and outlet valves of that set, or plug them with blind flanges.
Friend, was that how you handled it back then?