Definition of the potential of imminent danger to the labors prescribed in Article 28 of the Labor Inspection Law Article 6

Following circumstances are potentials of imminent danger under the category of fire and explosion:1. When performing welding, forging, or use of open flame, or has the potential to produce sparkles on pipes, storage trough, tank and other storage container containing harmful materials, oil and grease, combustible dust and other dangerous materials, the contents have not been removed before-hand and cleared of danger.2. Examination of the density of vapor containing inflammable liquid or that of stationary combustible gases has not been performed prior to the beginning of work at workplace with potential of fire and explosion caused by the aforementioned vapor or gases. When the density of inflammable liquid or combustible gases reaches within 30% of its safety limit, labors have not been evacuated immediately to safety and the use of fire and of machines that may ignite have not all put into stop.3. Ventilation, exhaustion, dust-cleaning, de-static and other necessary installations have not been installed at workplaces where potential of fire and explosion caused by storing of vapor with inflammable liquid, combustible gases and dust exist.4. While performing improvement, repair, cleaning, removal on installations containing chemicals and peripherals of its kind where hazardous materials leakage may endanger labors and no assigned personnel to set double control on valves or switches or to set blind boards.5. No proper drainage system and other necessary measures to prevent explosion caused by vapor at buildings with installations for processing melted materials at high temperature and workplaces processing or disposing high temperature slag.6. Using pure oxygen for air circulation in confined workplaces.