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Jiann Yang, Edward Hnetkovsky, Christopher Bajwa, Earl Easton, Felix Gonzalez
The NRC is investigating the performance of seals in SNF transportation packages exposed to fires that could exceed the HAC fire described in 10CFR Part 71, such as the Baltimore Tunnel Fire that occurred in 2001. The performance of package seals is
Kuldeep R. Prasad, Thomas G. Cleary, William M. Pitts, Jiann C. Yang
The study of compressed hydrogen release from high-pressure storage systems has practical application for hydrogen and fuel cell technologies. Such releases may occur either due to accidental damage to a storage tank or connecting piping, or direct PRD
When an emergency occurs, it is not always sufficient to simply initiate alarm bells. Individuals may not know what the alarm bell means and, in turn, may respond inappropriately to its sound. Many buildings have installed mass notification or emergency
Chi P. Hoang, Tinh Nguyen, Deborah S. Jacobs, Andrew K. Persily
The effects of ozone treatment and extraction on fungal activities of bamboo and red-oak flooring materials have been investigated. One set of wood samples was extracted with cyclohexane and ethanol for 48 hours to remove extractable compounds. Another set
This study examines the size distribution and other characteristics of firebrand exposure during the 2007 Angora Fire, a severe Wildland-Urban Interface (WUI) fire in California. Of the 401 houses that received direct interface fire exposure 61% were
Samuel L. Manzello, Sayaka S. Suzuki, Yoshihiko Hayashi
An experimental campaign was undertaken to determine vulnerabilities of siding treatments and walls fitted with eaves to firebrand bombardment using the NIST Dragon installed in the Building Research Institutes Fire Research Wind Tunnel Facility (FRWTF)
High-temperature metallic seal performance tests were performed. All the tests were conducted at either 800 °C or 427 °C for 9 hours in a electrical furnace. In the three repeated tests under similar beyond-design-basis thermal exposure conditions of 9
As pointed out by the recent National Academy of Sciences report on forensic sciences, the study of fire patterns and debris in arson fires is in need of additional study and standardization. Part of the current difficulty is in determining the appropriate
Arson rates vary widely across the U.S., and much of this variation can be traced to fuel and weather factors related to ignition success and socioeconomic factors shown to influence crime rates. In criminology, it is well understood that indicators of
Due to the ban of Halon 1301 under the Montreal Protocol, new liquid fire suppressants have been proposed as possible alternatives to Halon 1301 in certain fires. It has been reported that in the case of water mist fire suppression systems, a large
A mixture fraction formulation is used to numerically simulate the two-dimensional structure of diluted axisymmetric methane-air nonpremixed counterflow flames. The size of the computational domain and the grid spacing are selected based on negligible
The suppression of low strain rate non-premixed flames was investigated experimentally in a counterflow configuration through the development of a methodology that allows establishment of laminar flames free from conductive heat losses. The method allows
The NFPA 2001 standard on the use of clean agents for the suppression of fires arose from the phase-out of Halon 1301. Standard methods exists for specifying the amount of clean agent required for Class A and Class B fires, but the recommendation for Class
Andrew J. Lock, Cheolhong Hwang, Matthew F. Bundy, Erik L. Johnsson, Gwon H. Ko
Experimental and numerical studies were conducted to investigate the effect of fuel location and distribution on full-scale underventilated compartment fires in an ISO 9705 room. Heptane fuel was burned in three different fuel distributions: single
Long T. Phan, John L. Gross, Therese P. McAllister
This document is intended to provide practicing engineers and building code officials with a technical resource that contains the current best practice for fire-resistant design of concrete and steel structures. The report provides a review of existing U.S
The computer model CONTAM was used to simulate the spread of smoke in a house with a working furnace during smoldering fires. Three smoldering experiments from a study on detector sensitivity and siting requirements conducted in 1975 using a two story
The scientific literature through 2005 on the effects of ventilation rates on health in non-industrial indoor environments (offices, schools, homes, etc.) has been reviewed by a multidisciplinary group of scientists from diverse fields relevant to indoor
Water sprinkler sprays (with relatively large droplet sizes) in residential and commercials structures are probably the most well known application of sprays in fire suppression. In more recent years, water mists (characterized by reduced droplet sizes
The transformation of chemical analyses to phase estimates via the Bogue calculations has been successfully used by industry for the past 70 years. Since its inception, however, it has been recognized as an estimate of potential phase composition based
The use of cementitious materials has been proposed in a variety of waste management systems because these materials can have a variety of desirable performance characteristics: hydraulic isolation, chemical isolation, structural stability. Cementitious
Erica D. Kuligowski, Richard D. Peacock, Bryan L. Hoskins
Evacuation calculations are increasingly becoming a part of performance-based analyses to assess the level of life safety provided in buildings. In some cases, engineers are using back-of-the-envelope (hand) calculations to assess life safety, and in
Nelson P. Bryner, Anthony D. Putorti Jr., Stephen P. Fuss, Bryan W. Klein
A fire occurred on the evening of June 18, 2007, in the Sofa Super Store in Charleston, SC. NIST analyzed the fire ground, consulted with other experts, and performed computer simulations of fire growth alternatives. Based on these analyses, the following
This report summarizes a NIST study aimed at assessing the safety of parallel wire suspension bridge cables under thermal effects. Both low temperatures, potentially embrittling the bridge wires, and high temperatures, potentially softening the wires, are
The BFRL International Standards Workshop was held on June 29 and 30, 2009 to identify opportunities for standards development organizations and U.S. industry to optimize their global competitiveness through standards, codes, and practices. For the first
Richard G. Gann, Jason D. Averill, Erik L. Johnsson, Marc R. Nyden, Richard D. Peacock
Estimation of the time available for escape (ASET) in the event of a fire is a principal component in fire hazard or risk assessment. Valid data on the yields of toxic smoke components from bench-scale apparatus is essential to accurate ASET calculations