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Engineering LaboratoryFire Research Division

## National Fire Research Laboratory

## Breadcrumb

Fire Calorimetry Database (FCD)

# Multiple Item Transient Combustion Calorimetry (TCC) Project

### Research Overview

Experiments were conducted to determine the relationship between the peak heat release rate (HRR) and the number of multiple combustible items. The Nuclear Regulatory Commission (NRC) and the Electric Power Research Institute (EPRI) collaborated on a set of experiments to measure the  (HRR) of transient combustibles. These are items one might find in industrial spaces on a temporary basis, in particular nuclear power plants. For example, during maintenance work, items such as trash bins, pallets, cardboard boxes, and so on, might remain in an area for a limited time period. These items are typically not accounted for when designing the fire protection system, but they are considered as part of a probabilistic risk analysis (PRA). A key parameter in such an analysis is the maximum heat release rate an item can generate if it accidentally catches fire, and the time to reach that peak following ignition.

https://doi.org/10.6028/NIST.TN.2102

https://www.nrc.gov/docs/ML2009/ML20091L481.pdf

Bryant, R. and Bundy, M. The NIST 20 MW Calorimetry Measurement System for Large-Fire Research, Technical Note (NIST TN) 2077, 2019https://doi.org/10.6028/NIST.TN.2077

NIST Fire Calorimetry Database (FCD)https://doi.org/10.18434/mds2-2314

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