by U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology in Gaithersburg, MD .
Written in English
|Other titles||Characterization and identification of super effective thermal fire extinguishing agents|
|Statement||William M. Pitts ... [et al.]|
|Series||NISTIR -- 6414|
|Contributions||Pitts, William M, National Institute of Standards and Technology (U.S.)|
|The Physical Object|
|Pagination||viii, 58 p.|
|Number of Pages||58|
The use of halon for fire fighting is being phased out due to its deleterious effects on stratospheric ozone. This report summarizes the findings of a three-year study designed to characterize and identify super-effective thermal fire-fighting agents as possible replacements for these widely used by: 7. Thermal agents operate by lowering the flame temperature through dilution, heat absorption, and thermal diffusion. Two aspects of these mechanisms are investigated using detailed chemical-kinetic modeling of methane opposed-jet laminar diffusion flames burning in air mixed with two idealized surrogate by: 6. One approach for mitigating the effect of the heat release is to mix lactic acid with. a good thermal agent like water, which is miscible with lactic acid. The mixing of lactic acid with water. may also offer potential synergistic effects for fire suppression effectiveness. The use of halons for fire fighting is being phased out due to their deleterious effects on stratospheric ozone. This paper describes the findings of part of a study designed to characterize and identify super-effective thermal fire-fighting agents as possible replacements for these effective compounds.
- A cup burner where the extinguishing agent was mixed with air in varying proportions and introduced into a propane flame was used to find the extinguishing concentration. - Thermal breakdown of the extinguishing agent was studied in an apparatus consisting of a tubular burner, where the extinguishing agent was mixed with the fuel in different. 21 () - In reference to aircraft fire-extinguishing systems,(1) during removal or installation, the terminals of discharge cartridges should be grounded or shorted.(2) before connecting cartridge terminals to the electrical system, the system should be checked with a voltmeter to see that no voltage exists at the terminal ing the above statements. Describe Class B fire extinguishers and it's symbol. Class C fires have common fuel sources but are ignited by electrical equipment such as appliances, switches, panel boxes power tools, or hot plates. Any dry chemical or dry powder portable fire extinguisher must be able to discharge at least _____ percent of it capacity. 10 feet ( m) Dry chemical and dry powder extinguishers must have a minimum horizontal discharge range of.
Effectiveness and Thermal Breakdown Products of Fire Suppression Agents Berit Andersson and Göran Holmstedt, extinguishing agents when they are applied in varying proportions to a burning fuel. In order to achieve this the equipment presented in figure 2 was used. ue to the potential environmental impact, there has been a shift to consider use of natural refrigerants, which have a lower Global Warming Potential (GWP) than traditional fluorocarbon-based refrigerants. One type of natural refrigerant are hydrocarbons (e.g. propane), which are classified as Class A3 refrigerants per ASHRAE Standard The Environmental Protection Agency (EPA) has a charge. Characterization and Identification of Super-Effective Thermal The use of halon for fire fighting is being phased out due to its deleterious effects on stratospheric ozone. This report summarizes the findings of a three year study designed to characterize and identify super-effective thermal fire-fighting agents as Brand: A.M. Manay. Name the extinguishing agent most commonly used by high-rate discharge fire extinguishing systems A thermal fuse all release the agent if the bottle temperature .