Unresolved question

Why 2 PSI? Examining the Engineering Basis of the PVHO-1 Threshold

Direct answer: A 2 PSI threshold is a stated scope boundary in the PVHO-1 discussion, but it is not treated here as a complete risk assessment or legal conclusion. The Council is seeking published technical documentation that explains its original engineering basis and modern mHBOT relevance.

The page starts with approximate ATA-to-PSI examples and marks historical engineering rationale as unresolved when primary documentation has not been located.

Editorial disclosure: Educational information only; not legal, medical, regulatory, or engineering advice. Published 2026-08-20; last reviewed 2026-08-20.

Review primary sources · Editorial policy and corrections