Peak summer temperatures in some parts of Europe are threatening the normal operation of refineries, Bloomberg has reported, citing the situation in Greece and Poland. Temperatures in Greece look set to top 40 degrees Celsius next week, which would make normal operations for refiners challenging and in Poland the hot weather is also jeopardizing the normal operation of refineries. “European refineries were designed in the sixties and the seventies,” Alan Gelder, vice president of refining, chemicals and oil markets at consultancy Wood…