Flexible hoses are discouraged for permanent hydrocarbon process applications; only used for non hydrocarbon utilities. You may need to seek corporate Engg approval in your organisation if you believe there is justification for this. We see cryogenic hoses being proposed for offshore ship to ship LNG transfer these days; armoured HP hoses for submarine gas /oil transport applications (Coflexip); ship to shore HC fluids transfer, but I've not seen these in inplant applications.