And in 1971 the Atomic Energy Commission did a series of tests of Emergency Core Cooling systems. Accidents were simulated. In each case the emergency systems worked – but the water failed to fill the core. Often being forced out under pressure.
As one of the AEC scientists says in the film:
“We discovered that our theoretical calculations didn’t have a strong correlation with reality. But we just couldn’t admit to the public that all these safety systems we told you about might not do any good”
And again the warnings were ignored by senior members of the Agency and the industry.
That was the same year that the first of the Fukushima Daiichi plant’s reactors came online. Supplied by General Electric.