Chapter I. General Provisions
(Duties of the Employer)
Article 1. The employer shall make efforts to establish working
methods, maintain a proper working environment and take measures necessary
for preventing anoxia, etc.
(Definition, etc.)
Article 2. In this ordinance, the meanings of the terms are as defined respectively in the following items:
(1) Oxygen deficiency: States under which the oxygen concentration
in the air is less than 18%. (2) Oxygen deficiency, etc.: The state defined in the preceding
item or the state in which the concentration of hydrogen sulfide in the
air is 10ppm or more. (3) Anoxia: The symptom observed in one who has inhaled oxygen-deficient
air. (4) Hydrogen sulfide poisoning: The symptom observed in one
who has inhaled the air in which the concentration of hydrogen sulfide
is 10 ppm or more. (5) Anoxia, etc.: Anoxia or hydrogen sulfide poisoning.
(6) Hazardous work of oxygen deficiency:
Those jobs to be carried out in places with the hazard of oxygen deficiency
(hereinafter referred to as "oxygen-deficient place") designated
in Attached Table 6 of the Enforcement Order (hereinafter referred to as "Cabinet Order") of the Industrial Safety and Health Law (Cabinet
Ordinance No. 318 of 1972).
(7) Class-1 hazardous work of oxygen deficiency: The oxygen
deficiency-hazard work other than class-2 hazardous work of oxygen deficiency
out of the oxygen-deficiency-hazard works.
(8) Class-2 hazardous work of oxygen
deficiency work: The work to be carried out in the oxygen-deficiency-hazard
place designated in item 3-3, item 9 or item 12 of Attached Table 6 of the Cabinet Order (to be restricted to the places designated by the Minister of Health,
Labour and Welfare as the places with the hazard of anoxia and hydrogen
sulfide poisoning for the places designated in the said items) from among
the oxygen-deficiency-hazard places.
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