The Safety Ordinance for Cranes
(Ordinance of the Ministry of Labour No.34 September 30, 1972)
Chapter III Mobile Crane
Section 2 Use and Operation
Article 63 (Providing with Inspection Certificate)
- (1) The employer shall, when carrying out the work using a mobile crane, provide its mobile crane inspection certificate on the said mobile crane.
Article 64 (Limitation of Use)
- (1) The employer shall not use a mobile crane, unless it complies with the standard prescribed by the Minister of Health, Labour and Welfare (limited to the structural parts of the mobile crane).
Article 64-2 (Loading Conditions as to Design Base)
- (1) The employer shall, when using a mobile crane, in order to prevent steels, etc., which construct the structural parts of the said mobile crane from deformation, breakage, etc., take into account the loading condition upon which the design of the mobile crane is based.
Article 65 (Adjustment on Over-winding Preventive Device)
- (1) The employer shall, as regards an over-winding preventive device on a mobile crane, adjust the vertical distance between the upper surface of the load-lifting attachment such as a hook and a grab bucket or the upper surface of the hoisting sheave of the load-lifting attachment and the sheave on the jib point and others which is liable to come into contact with the said upper surface (excluding an inclined jib) for 0.25 m or more (0.05 m or more for the direct driven type over-winding preventive device).
Article 66 (Adjustment of Safety Valves)
- (1) The employer shall, as regards safety valves for preventing the excessive pressure rise of the water pressure or the oil pressure of a mobile crane which uses the water pressure or the oil pressure as power source, adjust them for being actuated at not more than the pressure corresponding to the water pressure or the hydraulic pressure at which the said mobile crane is operated with the load corresponding to the maximum value of the rated capacity. However, this shall not apply to the case of performing the load test or the stability test pursuant to the provision of Article 62, and adjusting the valves for being actuated at the pressure necessary for those cases.
Article 66-2 (Determination, etc., of Work Method, etc.)
- (1) The employer shall, when carrying out the work using a mobile crane, in order to prevent workers from dangers due to overturning, etc., of a mobile crane, establish in advance, the following matters taking into account the space, landform and condition of the nature of the soil of the place pertaining to the said work, the mass of loads to be carried, the type and capability of the said mobile crane to be used, etc.:
- (i) Work methods for use of a mobile crane;
- (ii) Preventive methods for overturning of a mobile crane;
- (iii) The placement of workers and the work indicating system pertaining to of the work using a mobile crane
- (2) The employer shall, when having establish the matters set forth in each item of the preceding paragraph, make the said matters known to the workers concerned before commencement of the work
Article 66-3 (Use of Safety Catch)
- (1) The employer shall, when lifting a load using a mobile crane, make use of safety catches.
Article 67 (Special Education)
- (1) The employer shall, when placing a worker in operation of a mobile crane with the lifting capacity of less than 1 ton (excluding the travelling on the road set forth in item (i) of paragraph (1) of Article 2 of the Road Traffic Act (Act No.105 of 1960)) conduct the special education for the safety related to the said operation, to the said worker.
- (2) The special education set forth in the preceding paragraph shall be conducted on the following subjects:
- (i) Knowledge on mobile cranes;
- (ii) Knowledge on prime movers and the electricity;
- (iii) Knowledge on the dynamics necessary for operation of mobile cranes;
- (iv) Related legislation;
- (v) Operation of mobile cranes;
- (vi) Signals for operation of mobile cranes.
- (3) In addition to the matters prescribed in Article 37 and Article 38 of the Safety and Health Ordinance and in the preceding two paragraphs, the Minister of Health, Labour and Welfare shall prescribe necessary matters related to the special education set forth in paragraph (1).
Article 68 (Limitation on Placement)
- (1) The employer shall, as regards the works listed in item (vii) of Article 20 of the Order, place nobody in the said works other than the one who has obtained the mobile crane operatorfs license. However, as regard the mobile crane with the lifting capacity of 1 ton or more and less than 5 tons (hereinafter referred to as "light capacity mobile crane"), the employer may place the person who has completed the skill training course for light capacity mobile crane operation in the said works.
Article 69 (Limitation on Overload)
- (1) The employer shall not use a mobile crane being loaded with the load exceeding its rated capacity.
Article 70 (Limitation of Jib Angle.)
- (1) The employer shall not use a mobile crane, exceeding the range of jib angle stated in the specification of the mobile crane (for a mobile crane with its lifting capacity of less than 3 tons, the range of jib angle designated by the manufacturer).
Article 70-2 (Indication, etc. for Rated Capacity)
- (1) The employer shall, when carrying out the work using a mobile crane, take measures of indications or others so that a crane operator and slingers are always able to confirm the said rated capacity of the mobile crane.
Article 70-3 (Prohibition of Use)
- (1) The employer shall not carry out the work using a mobile crane on the place where is liable to cause overturning to the mobile crane due to that the ground is not firm enough, the underground object is liable to be damaged, etc. However, this shall not apply to the case of placing steel plates, etc., with necessary space and strength for preventing the mobile crane from overturning, and putting the said mobile crane on it at the said place.
Article 70-4 (Positions of Outriggers)
- (1) The employer shall, in the case set forth in the proviso of the preceding Article and when carrying out the work using a mobile crane that its outriggers are to be used, set the said outriggers on the said steel plate, etc., and at the place where is unlikely to overturn of the mobile crane.
Article 70-5 (Extension of Outriggers, etc.)
- (1) The employer shall, when carrying out the work using a mobile crane equipped with outriggers or extensible crawlers, extend the said outriggers or the said crawlers to maximum limit. However, this shall not apply to the case that there is no possibility to extend outriggers or crawlers to maximum limit, and the load to be applied to the said mobile crane is clearly estimated not to exceed the rated capacity corresponding to the extended width of the outriggers or crawlers.
Article 71 (Signals for Operation)
- (1) The employer shall, when carrying out the work using a mobile crane, set the fixed signals for the operation of the mobile crane, designate a person who gives the said signals and have the said person give the said signals. However, this shall not apply to when having only a mobile crane operator carry out the work single-handedly.
- (2) The person designated pursuant to the preceding paragraph, when engaging in the work set forth in the same paragraph, shall give the signals set forth in the same paragraph.
- (3) Workers engaged in the work set forth in paragraph (1) shall follow the signals set forth in the same paragraph.
Article 72 (Restriction on Riding)
- (1) The employer shall not carry workers by a mobile crane, nor have workers work being hanged from the mobile crane.
- (1) The employer may, notwithstanding the provision of the preceding Article, in the unavoidable case due to the nature of the works or in a necessary case to carry out the works safely, provides the exclusive riding equipment fitted with a load-lifting attachment and ride workers on the mobile crane.
- (2) The employer shall, as regards the riding equipment set forth in the preceding paragraph, carry out the following matters for preventing workers from the dangers due to falling:
- (i) To take measures for preventing the riding equipment from the transposition and the falling;
- (ii) To have workers use safety belts, etc.;
- (iii) As regards the amount of weight added 500 kg to the weight corresponding to 1.3 times the total weight of the riding equipment and persons riding on it, not to exceed the rated capacity of the said mobile crane;
- (iv) To make the riding equipment lower by the method of power lowering.
- (3) Workers shall, when having been instructed to use safety belts, etc., in the case referred to in the preceding paragraph, make use of them.
Article 74 (Prohibition of Entry)
- (1) The employer shall, when carrying out the work pertaining to a mobile crane, not allow workers to enter the places where it is liable to cause dangers to workers due to contact with the superstructure of the said mobile crane.
(1) The employer shall, when carrying out the work using a mobile crane and in the case falling under any of the following each item, not allow workers to enter the place under a lifted load (in the case of item (vi), including a load-lifting attachment):
- (i) When a load slung using lifting hooks being suspended;
- (ii) When a load slung using a single clamp being suspended;
- (iii) When a load slung at one position of the load using wire rope, etc., being suspended (excluding the case of slinging a load by reeving the wire rope, etc., through an hole or an eye-bolt provided on the load);
- (vi) When plural loads being lifted at a time, and not fixed such as bundled and kept in a box.;
- (v) When a load slung using a load-lifting attachment or a slinging equipped with the magnet system or the vacuum system being suspended;
- (iv) When lowering a load or a load-lifting attachment by methods other than power lowering.
Article 74-3 (Suspension of Work in Strong Wind)
- (1) The employer shall suspend the work pertaining to a mobile crane, when the dangers regarding the said work are forecast due to the strong wind.
Article 74-4 (Prevention of Overturning at Strong Wind)
- (1) The employer shall, when suspending the work pursuant to the provision of the preceding Article, and in the case where it is liable to cause turnover of a mobile crane, take measures such as fastening the jib of the said mobile crane to prevent workers from the danger due to overturning of the mobile crane.
Article 75 (Prohibition of Leaving Mobile Cranes Unattended)
- (1) The employer shall not have a mobile crane operator leave the operating station while suspending a load.
- (2) The operator set forth in the preceding paragraph shall not leave the operating station while suspending a load.
Article 75-2 (Jib Erection Work, etc.)
- (1) The employer shall, when erecting or dismantling jibs of a mobile crane, take the following measures:
- (i) To appoint a person to supervise the work and to have workers carry out it under supervision by the said person;
- (ii) To prohibit workers other than those concerning the work from entering the area where works are on-going, and display a notice to that effect at a readily visible location;
- (iii) When dangers regarding the implementation of the work are forecast due to bad weather such as strong wind, heavy rain and heavy snow, not to have workers engage in the said work.
- (2) The employer shall have the person who supervises the work set forth in item (i) of the preceding paragraph, carry out the following matters:
- (i) To determine the work method and the placement of workers and supervise the work;
- (ii) To check up defects in materials, the function of instruments and tools, and remove defective ones;
- (iii) To monitor the use of safety belts, etc., and safety helmets during the work.