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A comment on NASA’s Plutonium Problem Could End Deep-Space Exploration. Parent comment

Re:NASA’s Plutonium Problem Could End Deep-Space Exploration by raverbashing on Friday September 20, 2013 @05:20AM (#6416737)
If I'm not mistaken the casing of it is very, very hard (even for space missions, where it's designed to whithstand a failed launch and reentry) and takes a very long time to degrade
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Re:NASA’s Plutonium Problem Could End Deep-Space Exploration by madaxe on Friday September 20, 2013 @01:40PM (#6419256)
Saltwater, astounding pressure and marine organisms make for a far harsher environment than the vacuum of space, or even a botched re-entry.

That said the argument I heard was that by the time they fall apart, the Pu has all but decayed.

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Re:NASA’s Plutonium Problem Could End Deep-Space Exploration by nate_meurer on Friday September 20, 2013 @02:49PM (#6419732)
The argument you heard is correct. The casings are likely made of something that is completely unaffected by saltwater, the pressures involved are neither astounding nor even interesting in this context, and... marine organisms? Which ones? Harsher than a botched re-entry?
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Re:NASA’s Plutonium Problem Could End Deep-Space Exploration by madaxe on Friday September 20, 2013 @03:17PM (#6419912)
The casings are steel, the rtg is in a ceramic capsule. You'd be amazed at what barnacles and such can pry wide open given time.
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