ange of interest. The *category* is a variable which, in an explicit range \[1-4\], expresses the expectation $(\mu_L)$ of the CPP loss random variable $L$. The *level* is a variable which, in an explicit range \[A-F\], expresses the rate or intensity $\lambda$ of the CPP.

The system of categories and levels agrees with the limits of discernibility of human intuition. Two different compound Poisson processes having the same category and level are indeed different but in practice are indistinguishable. This characteristic imposes a logarithmic organization on the categories and levels.

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  Description     Severity  Mishap Result Criteria
                  Category  
  Catastrophic       1      Could result in one or more of the following: death, permanent total disability, irreversible significant environmental impact, or monetary loss equal to or exceeding \$10M.
  Critical           2      Could result in one or more of the following: permanent partial disability, injuries or occupational illness that may result in hospitalization of at least three personnel, reversible significant environmental impact, or monetary loss equal to or exceeding \$1M but less than \$10M.
  Marginal           3      Could result in one or more of the following: injury or occupational illness resulting in one or more lost work day(s), reversible moderate environmental impact, or monetary loss equal to or exceeding \$100K but less than \$1M.
  Negligible         4      Could result in one or more of the following: injury or occupational illness not resulting in a lost work day, minimal environmental impact, or monetary loss less than \$100K.
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