In the area of risk assessment, hazard severity categories are used to provide a measure of the seriousness involved. A system failure causing major environmental damage would be classified as:

The correct answer is B. Critical. Critical is correct because, in standard hazard severity classification frameworks (such as MIL-STD-882), the "Critical" category specifically covers failures that cause major damage - including severe environmental harm, serious injury, or significant property loss - without…

System Reliability

Question

Options

ACatastrophic.
BCritical
CMarginal
DNegligible

How the community answered

(48 responses)

A
4% (2)
B
71% (34)
C
15% (7)
D
10% (5)

Explanation

Critical is correct because, in standard hazard severity classification frameworks (such as MIL-STD-882), the "Critical" category specifically covers failures that cause major damage - including severe environmental harm, serious injury, or significant property loss - without reaching the absolute worst-case threshold. Catastrophic (A) is reserved for the most extreme outcomes: loss of life, permanent total disability, or complete system destruction, which go beyond "major" damage. Marginal (C) applies to minor damage or injury that is real but limited in scope and reversible. Negligible (D) covers inconsequential effects that are barely worth noting on a risk register.

Memory tip: Think of the four levels as a ladder - Catastrophic is the top rung (people die, system destroyed), Critical is one step below (major harm, no deaths), Marginal is minor harm, and Negligible is virtually no harm. "Major environmental damage" sounds serious but is one step short of catastrophic, which pins it to Critical.

Topics

#hazard severity#risk assessment#failure classification#safety categories

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