Where the reactors are - U.S., Midwest
About the Prairie Island reactors
How a pressurized water nuclear reactor works - part I
How a pressurized water nuclear reactor works - part II
Northern States Power sues Westinghouse over faulty tubes
Problems with Steam Generator Tubes (Part I)
Problems with Steam Generator Tubes (Part II)
A nightmare confirmed: steam tube degradation is increasingly likely to cause a nuclear meltdown (Part I)
A nightmare confirmed: steam tube degradation is increasingly likely to cause a nuclear meltdown (Part II)
Chernobyl to Prairie Island - We are all in the zone (Part I)
Chernobyl to Prairie Island - We are all in the zone (Part II)
Prairie Island routinely emits radioactivity into the environment
A little lesson on radioactivity: how it affects the human body
The difference between high-level and low-level radiation exposure
The effects of low-level radiation exposure
The waste fuel pools are filling up
Dry cask storage: problems guaranteed, and problems unknown
Yucca Mountain, Nevada: not a good place for nuclear waste
Transporting the waste: how safe can 45,000 shipments be?
Most mining and milling of uranium occurs on Indian lands
People of color are also targeted for other uranium processing facilities
Nuclear waste dumps - guess where they want to put them
Anything is cheap if you don't pay the cost
Nuclear power can be phased out
An interview with two of the neighbors
REFERENCES
Broken Reactor Components
A nightmare confirmed:
Steam tube degradation is increasingly likely to cause a nuclear meltdown
Part 1 - why this could happen
On February 2, 1996, after PIC had secured internal nuclear industry documentation of steam generator tube problems,
the Nuclear Regulatory Commission confirmed our worst fear: steam generator tube degradation is increasingly likely to result in many tubes rupturing at the same time. This will cause a nuclear meltdown.
Of particular concern are circumferential cracks in tubes next to each other.
When one circumferentially cracked tube ruptures,
the additional stress may cause adjacent tubes to also rupture.

Rules governing reactor operations simply did not contemplate cascading tube ruptures. Therefore, emergency core cooling systems were not designed to prevent a core meltdown if a number of tubes rupture at the same time.