Journal of Japan Society for Safety Engineering
Online ISSN : 2424-0656
Print ISSN : 0570-4480
ISSN-L : 0570-4480
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Volume 25, Issue 3
JOURNAL OF JAPAN SOCIETY FOR SAFETY ENGINEERING_1986_3
Displaying 1-12 of 12 articles from this issue
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PROPOSAL FOR SAFETY
  • Experimelltal　Study　on　Ignitability　and　Flammability of　Ammonia－Air　Mixtures
    [in Japanese]
    1986 Volume 25 Issue 3 Pages 132-137
    Published: June 15, 1986
    Released on J-STAGE: November 30, 2017
    DOIhttps://doi.org/10.18943/safety.25.3_132
    JOURNAL FREE ACCESS
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    The　ignition　behaviors　of　ammonia－air　mixtures　were　studied　by　means　of　the　bumer　method・ Diffusion　and　pre－mixing　bumer　systems　were　used．Two　kinds　of　capacitance　sparks　were　tested　for ignition　on　a　nozzle　burner　to　examine　ignition　conditions， The　capacitance　sparks of “rectangular” form　which　had　the　duration　of　O.1 to　1　ms　were　much more　superior than　those　of　the　direct　discharge　from　a　condenser， The　mixture　made　from　the　mutual　diffusion　of　ammonia　and　air，on　the　nozzle　burner，was ignited　with　the　energy　of 30 mJ　of　a　spark　which　had　the　duration　of　O.1 ms. The　stabilities　of　diffusion　flame　and　pre－mixed　flame　on　the　nozzle　bumer　were　also　invetigated. The　results　showed　that　both　Hames　are　unstabIe　at　room　temperature　as　already　mentioned　in　the literature. In a　glass　tube　of 70 mm．diameter, the　energies　required　for　ignition　of　pre－mixed　gases　were detemlned at ambient temperature and pressure． That　results　gave　a　good　agreement　with　those　of　the　burner　method．　The　minimum　ignition energy　was 7.5mJ　for　the　spark　which　had　the　dumtion　of　O.1ms，while　the　value　was 105 mJ　for　a 1μs　spark・　The　highly　pure　ammonia　prepared　for　the semiconductor　manufacture　was　ignited　by　the similar energy as that for the commercial use.

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  • Abnormal　Reactions　in Benzene　Hydrogenation （Ⅰ）　The　First　Stepl　Cyclohexane　Hydrogenation
    [in Japanese], [in Japanese]
    1986 Volume 25 Issue 3 Pages 138-144
    Published: June 15, 1986
    Released on J-STAGE: November 30, 2017
    DOIhttps://doi.org/10.18943/safety.25.3_138
    JOURNAL FREE ACCESS
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    [in Japanese]
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TECHNICAL REPORT
ACCIDENT ANALYSIS
SALOON
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