The name is misspelled, it is Klevan. Klevan is a village about 25 km NW of the city of Rivne. It was part of Poland between WWI and WWII. This is an industrial track (apparently for a steel mill) and won't show on any map view, satellite is needed (I used Bing). Coordinates are 50.750726,26.045555, where the straightaway begins.
Here in the USA this type of track would be classed by the Federal RR Administration as Excepted Track (10 mph max, no passenger trains).