Ordinance on Industrial Safety and Health
Ministry of Labour Ordinance No. 32 of September 30, 1972
Latest Amendments:
Ministry of Health, Labour and Welfare Ordinance No. 47 of March 30, 2007
In Japanese
掲載日：2008.03.28
Part II Safety Standards
Chapter VII Prevention of Dangers in Cargo Handling Operations, etc.
Section 2 Stevedoring Work
Subsection 3 Handling of Cargo Lifting Appliance
Article 465 (Checkup)
- (1) The employer shall, when carrying out the work hoisting or lowering cargos using a cargo lifting appliance, check up the working conditions of the appliance before commencing the said work and not have the worker use the appliance unless otherwise having conformed there has been no abnormality.
Article 466 (Strict Observance of Limited Capacity)
- (1) The employer shall not use a cargo lifting appliance with a load exceeding its limited capacity.
Article 467 (Signals)
- (1) The employer shall, when carrying out the work using a cargo lifting appliance, set fixed signals for the operation of the cargo lifting appliance, designate a person who gives the signals for each cargo lifting appliance, and have the said person give the signals.
- (2) The person who is designated set forth in the preceding paragraph shall, when engaging in the work set forth in the same paragraph, give the signals set forth in the same paragraph.
- (3) The worker engaging in the work set forth in paragraph (1) shall follow the signals set forth in the same paragraph.
Article 468 Prohibition of Leaving Work Station Unattended)
- (1) The employer shall not allow the operator of cargo lifting appliance to leave the work station unattended while suspending the cargo.
- (2) The operator set forth in the preceding paragraph shall not leave the work station unattended while suspending the cargo.
Article 469 (Safety Coefficient of Wire Rope)
- (1) The employer shall, as regards the value of the safety coefficient of wire ropes used for slinging of a cargo lifting appliance, ensure six or more.
- (2) The safety coefficient set forth in the preceding paragraph shall be the value of the breaking load of a wire rope divided by the value of the maximum load applied to the said wire rope.
Article 469-2 (Safety Coefficient of Chains)
- (1) The employer shall ensure the safety coefficient of a chain used for slinging of cargo lifting appliance, values equivalent or more those listed in the following each item corresponding to categories listed in the said each item.
- (i) Chains falling under the following every condition: 4
- (a) Those with an elongation not more than 0.5 % when loaded with one half of the breaking load.
- (b) Those with a tensile strength of 400 N/mm2 or more, and the elongation of the value listed in the right column of the following table or more corresponding to tensile strength listed in the left column.
Tensile strength (Unit: N/mm2) Elongation (Unit: %) 400 or more but less than 630 20 630 or more but less than 1000 17 1000 or more 15
- (ii) Chains other than those falling under the preceding item: 5
- (i) Chains falling under the following every condition: 4
- (2) The safety coefficient provided for in the preceding paragraph shall be the value of the breaking load of the chain divided by the value of the maximum load applied onto the said chain.
Article 470 (Safety Coefficient of Hooks, etc.)
- (1) The employer shall ensure the safety coefficient of hooks or shackles used for slinging of cargo lifting appliance, the value of five or more.
- (2) The safety coefficient set forth in the preceding paragraph shall be the value of the breaking load of a hook or a shackle divided by the value of the maximum load applied onto the said hook or shackle.
Article 471 (Prohibition of the Use of an Inadequate Wire Rope)
- (1) The employer shall not use a wire rope falling under any of the following each item for slinging of cargo lifting appliance:
- (i) Those with 10% or more of the element wires (excluding filler wires) are cut in one strand.
- (ii) Those with the reduction ratio of a diameter exceeding 7% of the nominal diameter.
- (iii) Those with kink.
- (iv) Those with marked deformation or corrosion.
Article 472 (Prohibition of the Use of an Inadequate Chain)
- (1) The employer shall not use a chain falling under any of the following each item for slinging of cargo lifting appliance:
- (i) Those with elongation exceeding 5% of the original length of such a chain at the time of manufacture.
- (ii) Those with the reduction ratio of a diameter of the cross section exceeding 10% of the original diameter of the cross section of such a chain at the time of manufacture.
- (iii) Those with crack.
Article 473 (Prohibition of the Use of an Inadequate Hook etc.)
- (1) The employer shall not use a hook, a shackle or a ring with deformation or crack for slinging of cargo lifting appliance.
Article 474 (Prohibition of the Use of an Inadequate Fibre Rope, etc.)
- (1) The employer shall not use the fibre rope or fibre belt falling under any of the following each item for slinging of a cargo lifting appliance:
- (i) Those with cut strands
- (ii) Those with marked damage or corrosion
Article 475 (Wire Rope and Chain)
- (1) The employer shall, as regards the non-endless type of wire ropes or chains, not use unless they are fitted with hooks, shackles, rings or eyes on both their ends for slinging of cargo lifting appliance.
- (2) The eyes set forth in the preceding paragraph shall be those of eyesplicing, compressed fitting methods or other methods with the strength equal to or greater than those methods. In this case, the eye-splicing method shall be made by splicing every strand of a wire rope three times or more, then cutting half of the wires of each strand, and further splicing the remaining wires at least twice (when every strand is spliced four times or more, at least once).
Article 476 (Checkup of Sling)
- (1) The employer shall, when carrying out the work using a cargo lifting appliance, check the condition of sling used for the said work such as a sling with a hook, a net sling and a wire sling before commencing the work for the day, and immediately repair or replace when having found any abnormalities.
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