The Safety Ordinance for Cranes
(Ordinance of the Ministry of Labour No.34 September 30, 1972)
Chapter IV Derrick
Section 2 Use and Operation
Article 103 (Providing with Inspection Certificate)
- (1) The employer shall, when carrying out the work using a derrick, provide the derrick inspection certificate of the said derrick at the place where the said work is carried out.
Article 104 (Limitation of Use)
- (1) The employer shall not use a derrick, unless it complies with the standard prescribed by the Minister of Health, Labour and Welfare (limited to the structural parts of the derrick).
Article 105 (Prevention for Over-winding)
- (1) The employer shall, as regards an over-winding preventive device on a derrick, 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 said load-lifting attachment and the lower surface of the sheave of a boom top and others which is liable to coming into contact with the said upper surface (excluding a boom) for 0.25 m or more (0.05 m or more for the direct driven type over-winding preventive device).
- (1) The employer shall, as regards a derrick without an over-winding preventive device, take such measures as marking on the hoisting wire ropes and installing warning devices in order to prevent workers from dangers due to over-winding of hoisting wire ropes. B
Article 107 (Special Education)
- (1) The employer shall, when placing a worker in operation of a derrick with the lifting capacity of less than 5 tons, conduct the special education for the safety related to the said operation, to the said workers
- (2) The special education set forth in the preceding paragraph shall be conducted on the following subjects:
- (i) Knowledge on derricks;
- (ii) Knowledge on prime movers and the electricity;
- (iii) Knowledge on the dynamics necessary for operation of derricks;
- (iv) Related legislation;
- (v) Operation of derricks;
- (vi) Signals for operation of derricks.
- (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 108 (Limitation on Placement)
- (1) The employer shall, as regards the works listed in item (viii) of Article 20 of the Order, place nobody in the said works other than the one who has obtained the careen/derrick operatorfs license.
Article 109 (Limitation on Overload)
- (1) The employer shall not use a derrick being loaded with the load exceeding its rated capacity.
- (2) Notwithstanding the provision of the preceding paragraph, the employer may, when taking the following measures in the case of having remarkable difficulty to conform to the provision of the same paragraph due to the unavoidable reason, use the derrick loading over its rated capacity up to the load on the load test prescribed in paragraph (3) of Article 97:
- (i) To submit in advance, the derrick special case report (Form No.10) to the Chief of the competent Labour Standards Inspection Office;
- (ii) To confirm in advance, that there is no abnormality by performing the load test prescribed in paragraph (3) of Article 97;
- (iii) To designate a person who supervises the operation, and operate the derrick under the direct supervision by the said person.
- (3) The employer shall, when having performed the load test pursuant to the provision of item (ii) of the preceding paragraph or used the derrick loading over its rated capacity, record the results and reserve them for three years.
Article 110 (Limitation of Boom Angle)
- (1) The employer shall not use a derrick equipped with a boom, exceeding a range of boom angle stated in the specification of the derrick (for the derrick with the lifting capacity of less than 2 tons, the range of boom angle designated by the design base).
Article 111 (Signals for Operation)
- (1) The employer shall, when carrying out the work using a derrick, set fixed signals for operation of the derrick, designate a person who gives the said signals and have the said person give the signals. However, this shall not apply to when having only a derrick 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 112 (Restriction on Riding)
- (1) The employer shall not carry workers by a derrick, nor have workers work being hanged from the derrick.
- (1) The employer may, notwithstanding the provision of the preceding Article, in the unavoidable case due to the nature of the work or in the necessary case to carry out the works safely, provides the exclusive riding equipment fitted with load-lifting attachment and carry workers on the derrick.
- (2)The provisions of paragraph (2) and (3) of Article 27 shall apply mutatis mutandis to the case set forth in the preceding paragraph.
Article 114 (Prohibition of Entry)
- (1) The employer shall, when carrying out the work using a derrick, in order to prevent workers from dangers due to rebounding of a hoisting or a derricking wire rope or flying of a sheave or its fitting caused by damage of the said sheave through which the said hoisting or derricking wire rope reeves or damage of its fittings, not allow the workers to enter the area within interior angle of the said wire rope where it is liable to cause the said dangers to workers.
- (1) The employer shall, when carrying out the work pertaining to a derrick and in the case falling under any of the following each item, not allow workers to enter the place under the lifted load (in the case set forth in item (vi), including load-lifting attachments):
- (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 reeving through an hole or an eye-bolt provided on the load);
- (iv) 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 lifting attachment or a sling gear of the magnet system or the vacuum system being suspended;
- (vi) When lowering a load or a lifting attachment by methods other than power lowering.
Article 116 (Measures in Storm)
- (1) The employer shall, when the wind having instantaneous wind velocity of exceeding 30 m/s is expected to blow, as regards a derrick installed out of doors, take measures such as to fasten the boom to the mast or to the fixture on the ground in order to prevent the derrick from damage due to swinging of the boom.
Article 116-2 (Suspension of Work in Strong Wind)
- (1) The employer shall suspend the work pertaining to a derrick, when the dangers regarding the said work are forecast due to the strong wind.
Article 117 (Prohibition of Leaving a Derrick Unattended)
- (1)The employer shall not have a derrick operators leave the operating station while suspending a load.
- (2)The operators set forth in the preceding paragraph shall not leave the operating station while suspending a load.
Article 118 (Erection Work, etc.)