How often does nuclear power plants meltdown?

[francium]

I could find no data about the 'chance' of getting a meltdown, it's neither in the manual nor in Civilopedia. Could anyone be so kind to post some 'hard' data (such as a formula like what's in SMAC) or their experience with meltdowns?

Thx for your attention

[Deathray]

Well, in Civilization 2 there's a chance of it happening when you lose a city. I hope there is some trigger like that for it in Civlization 3, if they just randomly melt down that would be pretty annoying.

[Yoleus]

Actually in CivII the Nuclear plants DO melt down randomly... even in peace, We Love the Boss, no pollotion whatsoever.
It happened in a game of mine.
It just happens - and you notice it

[Altuar]

Civilopedia claims they only meltdown during civil disorders.

My experience confirms this so far.

[Yoleus]

Uhm Altuar, you just put a bug in me, maybe you are right

[Haphazard]

Maybe the nuclear plant though civil disturbance was about to happen?

Sounds iffy though. I wish the manual would be clearer on technical points like this.