When the Inspection Schedule Becomes the Problem Two pressure vessels. Same vintage. Same design code. One is in a low-corrosivity stream with stable operating conditions. The other handles wet H2S with cyclic thermal loads and an upset history going back several years. Under a traditional time-based inspection regime, they'd both be inspected on the same four-year cycle. That's the flaw in fixed-interval inspection thinking. It treats all assets as equal, which means the dan