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Monthly Archive for: ‘May, 2013’

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Target Mitigated Event Likelihood (TMEL) & ALARP (or ALARA)

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There is a lot of discussion elsewhere on ALARP (and/or ALARA).  However, a company can add too many protection layers and invite shortcuts of one or more of the IPLs over the long-term, since staff are pretty sharp at figuring out when the “plumbing is over-tinked”.  We advise folks to reach barely tolerable on each scenario and then stop; BUT …

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