Forget about this crash.
Got some hours later a blue-screen in Windows. After a restart of the PC I could play the same save-game for several hours without any crashes. Guess somehow something was fishy with my whole system the crash in factorio were just symptoms.
Thanks for the fast support

Hope this is the right one, playtime should be 17h+. Like I mentioned in the post before, crashes seem to occur randomly every min ~2 - 7 min. Funny thing through, even when you load the same savegame as before the time to the next crash can vary.

bare game, allways up to date through steam, no mods installed

Some random crashes that occur every few min in the "late game". Cant connect the cause of the crashes to a specific actions, the crashes seem just randomly to happen every few min. Hope the log helps ya to fix further crashes.

0.001 ...