How significant is "in the blast radius of an oil refinery"? Once every how many years should I expect a typical oil refinery to explode? This really doesn't seem like it should be their first, second, fifth, or twelfth priority to"solve".

EDIT: asking Claude:

Based on historical data, major refinery explosions in developed countries might occur at a rate of approximately 1 in 1,000 to 1 in 2,000 refinery-years of operation. Using this very rough estimate, a single refinery might have approximately a 50% chance of experiencing a significant explosion somewhere between 700-1,400 years of continuous operation.