Normally, silocon use as filling material for capillary line, but HF service pressure, silocon can reacte with HF if there is some leak from the diagram, and it can form explosive mixture, one of my plants have occured such accident, then i checked API751, it mentioned that CTFE can be used as filling material, but i find that CTFE is an explosive material, so my quesiton is: can CTFE used as filling material? are there any other specific material can be an altenative? thank you!
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