Fire Performance Evaluation Of Solid Aqueous Film Forming Foam Afff
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Fire Performance Evaluation Of Solid Aqueous Film Forming Foam Afff
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Author : Joseph L. Scheffey
language : en
Publisher:
Release Date : 1986
Fire Performance Evaluation Of Solid Aqueous Film Forming Foam Afff written by Joseph L. Scheffey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
The fire performance of solid AFFF firefighting foam purchased from the 3M Company was determined and compared against the performance of liquid 3 percent concentrate which is on the Navy Qualified Products List (QPL). Twenty-eight and 50-square-foot fire tests specified in MIL-F-24385C were used to measure fire performance. A limited number of large-scale (1000-square-foot) fire tests were also conducted. Several mixing techniques were used to prepare solution samples at agent-to-water ratios of 6 grams per liter and 8 grams per liter. A total of 47 fire tests were conducted. In all tests, the fire was extinguished using solutions prepared with solid AFFF. These solutions averaged longer times to control and extinguish hydrocarbon fuel fires when compared to solutions prepared with 3 percent liquid AFFF concentrate. Less than desirable burnback and mixing characteristics were also identified. Because there is potential to achieve significant agent space and weight reductions by using a solid AFFF, additional testing and evaluation is recommended. Specific recommendations include evaluation of solutions prepared by increasing the solid agent-to-water ratio, or reformulation of the solid agent to improve performance. Super-concentrated AFFF (proportioned at 1 percent or less) and concentrates prepared by reconstituting a base AFFF formulation also have potential to reduce space and weight requirements compared to existing 3 and 6 percent AFFF concentrates.
Evaluation Of Aqueous Film Forming Foams Afff On Deck Fires
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Author : D. E Beene (Jr)
language : en
Publisher:
Release Date : 1983
Evaluation Of Aqueous Film Forming Foams Afff On Deck Fires written by D. E Beene (Jr) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
Aqueous film forming foam (AFFF) concentrates were tested on the after tank deck of the Tank Vessel A.E. WATTS. It simulated a spill fire using marine diesel as the test fuel. The purpose of the testing was to evaluate the firefighting effectiveness of different AFFF concentrates and to determine whether 1% or 3% AFFF concentrates could be used to replace the 6% Military Specification AFFF concentrate used on board Coast Guard cutters. This replacement could reduce the weight and space required for AFFF storage or increase the overall time of firefighting effectiveness. The AFFF's tested were 3% and 6% AFFF concentrates meeting Military Specification MIL-F-24385, two commercial 3% AFFF concentrates, two polar solvent resistant 3% AFFF concentrates, and a 1% commercial AFFF concentrate. A secondary objective was to evaluate the firefighting effectiveness of the four nozzles used aboard Coast Guard cutters when using AFFF. The tests demonstrated that the 3% AFFF concentrates were as effective the 6% Military Specification AFFF concentrate in controlling and extinguishing deck fires, as well as in sealing around hot metal surfaces and in burnback resistance. The 1% AFFF concentrate had control and extiguishment times comparable to those of the 6% AFFF Military Specification concentrate, but it was the least acceptable AFFF because of its poor burnback resistance. The Coast Guard All Purpose (CGAP) nozzle and the Twin Agent Unit (TAU) nozzle had the longest control and extinguishment times while the Mechanical Foam Nozzle (MFN) and the Select-O-Flow (SFL) nozzle had the shortest control and extinguishment times.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1987
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Evaluation Of Three Percent Aqueous Film Forming Foam Afff Concentrates As Fire Fighting Agents
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Author : Edwin J. Jablonski
language : en
Publisher:
Release Date : 1981
Evaluation Of Three Percent Aqueous Film Forming Foam Afff Concentrates As Fire Fighting Agents written by Edwin J. Jablonski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with categories.
A large-scale fire test program involving 20,000-square foot JP-4 fuel fires was conducted to evaluate the fire suppression effectiveness and compatibility of 3 percent Aqueous Film Forming Foam (AFFF) agents in Air Force fire fighting vehicles. Three commercially available 3 percent AFFF concentrates were tested in accordance with military specification MIL-F-24385B. Test results are summarized in Appendix A. As a result of these tests, an updated Revision C to this MIL SPEC has been accomplished with new requirements for both 3 percent and 6 percent AFFF extinguishing agents. (Author).
The Future Of Aqueous Film Forming Foam Afff
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Author : Ronald S. Sheinson
language : en
Publisher:
Release Date :
The Future Of Aqueous Film Forming Foam Afff written by Ronald S. Sheinson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
This paper examines the properties of AFFF that provide for rapid and efficient fire extinguishment, highlights operational restrictions of employing AFFF for DoD applications, and critiques the requirements of MIL-F-24385F. Identifying and understanding the key parameters for successful AFFF extinguishment will guide development of replacement foams. Possible modification of specification requirements in MIL-F-24385F may engender broader options for possible compositions, thus increasing the likelihood of a successful AFFF alternative without sacrificing fire suppression performance.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1986
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Science categories.
Analysis Of Test Criteria For Specifying Foam Firefighting Agents For Aircraft Rescue And Firefighting
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Author : Joseph L. Scheffey
language : en
Publisher:
Release Date : 1994
Analysis Of Test Criteria For Specifying Foam Firefighting Agents For Aircraft Rescue And Firefighting written by Joseph L. Scheffey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Airplanes categories.
Government Reports Annual Index
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Author :
language : en
Publisher:
Release Date : 1986
Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Government reports announcements & index categories.
Treatability Of Aqueous Film Forming Foams Used For Fire Fighting
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Author : Ronald K. Kroop
language : en
Publisher:
Release Date : 1974
Treatability Of Aqueous Film Forming Foams Used For Fire Fighting written by Ronald K. Kroop and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with categories.
The biodegradability of aqueous film-forming foams (AFFF) used for fire fighting was evaluated in laboratory-scale activated sludge and trickling filter reactors at the Air Force Weapons Laboratory. Three AFFFs were evaluated: 'Light Water' FC-200 from 3M Company Aerowater 3 percent from National Foam Company; and Aerowater 6 percent, also from National Foam Company. Concentrations not to exceed 100 mg/1 of AFFF influent to the biological treatment process could be satisfactorily treated without affecting the performance of the process and with apparent detoxification of the AFFF. Adsoprtion of AFFFs onto activated carbon is practical. (Modified author abstract).
Comparative Nozzle Study For Applying Aqueous Film Forming Foam On Large Scale Fires
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Author :
language : en
Publisher:
Release Date : 1978
Comparative Nozzle Study For Applying Aqueous Film Forming Foam On Large Scale Fires written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
A large-scale fire test program was conducted to evaluate the relative fire-fighting effectiveness of applying aqueous film forming foams (AFFF) through commercially available air-aspirating and non air-aspirating nozzles. The Navy MB-1 and P-4A and Air Force P-4 aircraft fire-rescue vehicles were used as nozzle test-beds. Nozzles with rated capacities of 250 gpm and 750 to 800 gpm were tested and evaluated on 4000 square feet and 8000 square feet JP-4 fuel fires, respectively. Eight of the 16 fires conducted contained an aircraft mock-up. The lower expansion, more fluid, longer reach aqueous film forming foams generated with the non air-aspirating type nozzles were found to provide superior fire extinguishing effectiveness compared to the air-aspirating type nozzles. Air-aspirated foams required approximately 50 percent longer to achieve 90 percent fire control than the non air-aspirated foams. No discernible difference in burnback resistance was found for either type of foam.