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by mwidell
197 days ago
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Low background steel is no longer necessary. "...began to fall in 1963, when the Partial Nuclear Test Ban Treaty was enacted, and by 2008 it had decreased to only 0.005 mSv/yr above natural levels. This has made special low-background steel no longer necessary for most radiation-sensitive uses, as new steel now has a low enough radioactive signature." https://en.wikipedia.org/wiki/Low-background_steel |
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