Apparently, in Hollywood there was attempt to make movie based on Chernobyl tragedy in late 80s, script was written by Ales Adamovich (he also wrote script for movie "Come and See" about WWII) and should be directed by Stanley Kramer:
In 1987, Ales Adamovich finished the script "… This is the name of the star Chernobyl" for the feature film, which was to be directed by the famous American Stanley Kramer. The script has already been approved by the film company Columbia Pictures. It is a pity that Kramer was unable to shoot the picture for personal reasons, because then there could be a landmark film that would bring to humanity the scale of the accident and the misfortune of the Belarusian people.