Hi all

In one of current projects involving a SRU unit, I came across CONTRO TRACING
Can I get some material on it to study (I am not getting good material via googling)

Following topics are my interests :-

1) What are the main tracing types or modes,
2) Why CONTO TRACING ?
3) Comparison b/w various tracing modes, i.e. STEAM TRACING, JACKETING, CONTRO TRACING & ELECTRICAL TRACING.
4) Contro tracing details (some thermodynamic & matullurgical aspects).

Waiting for reply…..!