Can you elaborate on the skin effect tracing systems? I’m not sure what you are talking about. How do they work? Websites?
I prefer jacketed piping to steam tracing in sulfur service based on my experience. It’s too easy to lose the insulation on traced systems.
Steam traps are an issue, even when considered ‘critical tracing’. You can inspect them all you want, but they can fail the very next minute. There are several trap monitoring devices being marketed that will continuously monitor trap performance and send a wireless signal back to a receiver that allows real time monitoring. It does require setting up a wireless data network, however.