posted by Anonymous .
Why did the reactors at the Fukushima plant overheat?
Without injections of coolant, water temperatures and water pressure started rising inside the reactors. There were fires and explosions. The intense heat started boiling away the coolant in the reactor core.
Still after reading some information, Im still have difficulty understanding.
Nuclear reactors need to be cooled down.
"the earthquake and tsunami knocked out the site's main electrical power supply and backup generators, making it hard to cool the nuclear fuel rods in the reactors and the cooling ponds nearby."
Oh that's from the article, that's how the problem came about? They heated because of the earthquake and tsunami?
They overheated because the nuclear plants lost power -- no electricity!