NIST · NIST AI
NIST/NRC Fire Research Collaborations
Compiled by KHAO Editorial — aggregated from 1 source. See llms.txt for citation guidance.
★ Tier-1 Source
As plants began to implement these strategies it became apparent that electrical enclosure fire scenarios dominated fire risk contributions across most plant in the fleet and suggested research could improve realism in the modes and allow end users to ensure adequate protection from fire hazards.
Key facts
- In total, 112 individual fire tests were conducted, and the result of this effort is documented in NUREG/CR-7197, “Heat Release Rates of Electrical Enclosure Fires (HELEN-FIRE)
- The results of this effort are documented in a seven-volume report, NUREG-1824 (EPRI 1011999), Verification & Validation of Selected Fire Models for Nuclear Power Plant Applications
- The features and limitations of the five fire models documented in NUREG-1824 (EPRI 1011999) are discussed relative to NPP fire hazard analysis (FHA)
- In a recent review of all fire events reported in US NPPs between 1990 and 2011 [6], it was found that 13.5 % (269 out of 1998) occurred in electrical enclosures
Summary
Objective To provide measurement data and analysis tools that enable accurate, efficient, probabilistic risk assessments for fire scenarios in nuclear power plants. Recent Research Brief descriptions and links to technical reports developed from recent NIST/NRC collaborations focused on Cable Fires and Fires in Electrical Enclosures are provided below. Ongoing Development and Future Work As the nuclear and general fire protection industries continue to expand their use of risk-informed, performance-based design principles, simple pass/fail criteria of standard fire tests are no longer sufficient to provide the granular level of risk information needed to support effective decision making.