Fire tests with fire extinguishers : supplementary experimental tests on portable chemical fire extinguishers particulars of experimental tests and some suggestions / [British Fire Prevention Committee].

  • British Fire Prevention Committee.
Date:
1914
Catalogue details

Licence: In copyright

Credit: Fire tests with fire extinguishers : supplementary experimental tests on portable chemical fire extinguishers particulars of experimental tests and some suggestions / [British Fire Prevention Committee]. Source: Wellcome Collection.

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    EXPERIMENTAL FIRE TESTS CONDUCTED BY THE EXECUTIVE OF THE British Fire Prevention Committee [FOUNDED 1897-INCORPORATED 1899.] TEST No. 185 (Series), APRIL 26th, 1913. SUPPLEMENTARY EXPERIMENTAL TESTS ON PORTABLE CHEMICAL FIRE EXTINGUISHERS. OBJECT OF TESTS. (With particulars of the Tests applied.) To ascertain the efficiency of those Portable Fire Extin- guishers, which had previously been tested by the Committee, the new tests to deal with: 1. The range and duration of the jet of liquid discharged from the appliance some considerable time after charging. 2. The amount of liquid remaining in appliance after opera- tion. 3. The result of the application of an air pressure test of ioo lbs. per sq. in. (6-9 atmos.) for five minutes. 4. The result of the application of Hydraulic Pressure Test of 350 lbs. per sq. in. (23-8 atmos.) for five minutes. 5. the hydraulic pressure at which the appliance burst and the effect of said pressure thereon. 6. The internal condition of the extinguisher after these tests. SUMMARY OF RESULTS OF TESTS. The following is a summary of the results of the tests: The Range of the discharge of the liquid from the Extin- guishers, when operated, does not appear to deteriorate much, although the appliances may have been left untouched for some years. There is a wide difference between the relative strengths of the Extinguishers made by different makers. In some cases the margin of safety in the constructional strength is almost infini- tesimal. as so much depends upon the quality and quantity of the chemicals employed.