Which statement describes document supersession?

• A. Supersession means documents are kept forever.
• B. Supersession applies to all government regulations.
• C. NFPA never revises documents.
• D. Older NFPA documents may be replaced by newer editions.

Answer: (D)

Supersession means older documents are replaced by newer editions. In NFPA standards, when a new edition is published, it becomes the current approved version and the older edition is superseded. This keeps requirements up to date with current knowledge and field experience, which is why the statement that older NFPA documents may be replaced by newer editions is the best description.

The other ideas don’t fit. Keeping documents forever would oppose the idea of newer editions; saying it applies to all government regulations overgeneralizes NFPA’s scope, which is specific to its own standards; and NFPA does revise documents, so the claim that it never revises is false.