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Enforcement Order of the Industrial Safety and Health Act
Cabinet Order No. 318, August 19, 1972

Amendments:
Cabinet Order No. 331. Oct 20, 2006

掲載日：2008.03.25

Article 20 (Operations Pertaining to Restriction on Engagement)
  • The operations defined by the Cabinet Order set forth in paragraph (1) of Article 61 of the Act shall be as follows:
    • (i) The operation of perforation, filling up explosive materials, joining leads, lighting explosive materials, and inspection or disposition of the misfire of explosive chemicals or explosive chemicals remaining after blasting;
    • (ii) The operation of ship lifting appliance having a limited capacity of 5 tons or more.
    • (iii) The operation of boilers (excluding small-sized boilers);
    • (iv) The operation of welding boilers described in preceding item and class-1 pressure vessels (excluding small-sized pressure vessels, excluding the welding by the automatic welding machine, the welding of the circumferential joints of pipes (for boilers, excluding a main steam pipe and a water feed pipe) and the welding of parts in which stresses other than compression stress does not take place);
    • (v) The operation of maintaining boilers (excluding small-sized boilers and the boilers listed in followings) or class-1 pressure vessels set forth in item (xvii) of Article 6
      • (a) Steam boilers having drum with an inner diameter of 750 mm or less and a length of 1,300 mm or less
      • (b) Steam boilers with a heating surface area of 3 m2 or less
      • (c) Hot water boilers with a heating surface area of 14 m2 or less
      • (d) Once-through boilers with a heating surface area of 30 m2or less (for those boilers with a steam separator, limited to the said steam separator having an inner diameter of 400 mm or less and an internal cubic volume of 0.4 m3 or less)
    • (vi) The operation of cranes with a lifting capacity of 5 tons or more (excluding telphers);
    • (vii) The operation of mobile cranes (excluding the operations travelling on roads prescribed in item (i) of paragraph (1) of Article 2 of the Road Traffic Act (Act No. 105 of 1960) (hereinafter referred to as "roads" in this Article)) with a lifting capacity of 1 ton or more;
    • (viii) The operation of derricks with a lifting capacity of 5 tons or more;
    • (ix) The operation carried out in water using diving apparatus while receiving the air supply from an air compressor or by manual pump, or from a compressed-air cylinder;
    • (x) The operation of welding, cutting or heating metals by using flammable gas and oxygen;
    • (xi) The operation of forklifts having the maximum capacity(meaning the maximum load that can be burdened onto the standard loading center of the forklift corresponding to its structure and materials) of 1 ton or more (excluding the operation travelling on roads);
    • (xii) The operation of construction machines as listed in items (1), (2), (3) or (6) of Appended Table 7 having the base machine weight of 3 tons or more, and those capable of self-propelling to unspecified places by utilizing motive power (excluding the operations travelling on roads);
    • (xiii) The operation of shovel loader or fork loader having the maximum load (meaning the maximum load capable of loading onto the shovel loader or fork loader corresponding to their structures and materials) of 1 ton or more (excluding the operation travelling on roads);
    • (xiv) The operation of rough terrain vehicle with the maximum loading capacity of 1 ton or more (excluding driving on roads);
    • (xv) The operation of vehicle for work at height with a work platform having the height of 10 m or more (excluding driving on roads);
    • (xvi) The operation of slinging for ship lifting appliance having a limited capacity of 1 ton or more, or for a crane, mobile crane or derrick having a lifting capacity of 1 ton or more;
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