NFPA 550

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Guide to the Fire Safety Concepts Tree

This guide describes the structure, application, and limitations of the Fire Safety Concepts Tree, which provides an overall structure with which to analyze the potential impact of fire safety strategies.

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Technical Committee

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NFPA members and public sector officials may submit a question on an NFPA code or standard. Responses are provided by NFPA staff on an informal basis.
Happy Holidays! NFPA will be closed December 25 - January 1. We wish you all a safe & enjoyable holiday week and look forward to serving you in the new year.

NFPA 550: News & Research

News about NFPA codes and standards

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Happy Holidays! NFPA will be closed December 25 - January 1. Place your orders by Wednesday, December 13 to ensure domestic delivery by year end. We wish you all a safe & enjoyable holiday week and look forward to serving you in the new year.

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