API inspection of exchanger channel showing physical damage to the pad partition plate and attaching filet welds.
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https://www.youtube.com/watch?v=qCXQo3xUzYQ
SMAW carbon steel weld Weave pass 2 inches wide.
also of note: the stations for x-ray (RT) were stamped indicating the early vintage of its construction.
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https://www.youtube.com/watch?v=c9PfUQWCRvA
issues having a water column inside tubing during a pneumatic testing attempt.
the fix for this is to blow air through the circuit and remove most of the water inside the tubing/pipe.
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https://www.youtube.com/watch?v=UIoQckA7_7U