Thank you all so far!
I need to be maybe a little more precise, for my sake of course.
So it comes: I am interested to find out if a vectoring for visual approach can be issued by the ATC for the runway which is not having any, and this is the most important, any instrument procedure published.
The visual approach is defined as in Doc 4444, and I quote: "Visual approach. An approach by an IFR flight when either part or all of an instrument approach procedure is not completed and the approach is executed in visual reference to terrain."
But as I said I don't have any instrument procedure at all. The only possible approach for that runway is by making a circling doing the ILS on the opposite.
So can I consider vectoring as being an instrument approach? And subsequently issue the vectoring for visual app or can't I?
Any input on this is greatly appreciated as I'm swimming the sea of incertitude.