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  1. OMG Issue

RAAML11 — STPA is not properly implemented

  • Key: RAAML11-15
  • Status: open  
  • Source: Blue Origin LLC ( Charles F Radley)
  • Summary:

    RAAML claims to implement STPA, but some important elements are missing.

    For example,

    In Step-1 of the STPA process (in the 2018 Leveson/Thomas STPA Handbook – Figure 2.3) it calls out the need to derive “Safety Constraints” from the Losses. I can find no reference to Safety Constraints in the RAAML.

    Furthermore the RAAML does not provide any linkage from Losses to Hazards, which is expected in the Handbook.

  • Reported: RAAML 1.0b2 — Thu, 3 Nov 2022 13:46 GMT
  • Updated: Thu, 3 Nov 2022 17:37 GMT