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 I Prevention of Dangers Due to a Machine
Section 4 Press Machine and Shearing machine
Article 131 (Prevention of Dangers Due to a Press Machine, etc.)
- (1) The employer shall, as regards a press machine and a shearing machine (hereinafter referred to as “press, etc.”), take measures of providing a safety enclosure, etc., for preventing a part of a body of the worker carrying out the work using the said press, etc., from entering the dangerous zone. However, this shall not apply to press, etc., with mechanism to prevent dangers due to a slide or a blade.
- (2) The employer shall, when it is difficult to comply with the provisions of the preceding paragraph due to the nature of the work, in order to secure the safety of a worker carrying out the work using the said press, etc., take such necessary measures as installation of safety devices as provided for in the followings:
- (i) The safety device having a performance corresponding to the type of press, etc., pressure capability, strokes/min., length of strokes, and the method of work.
- (ii) The safety device having a performance corresponding to the stopping performance of the press, etc., for the one with two-hand control system or with sensitive-response system.
- (3) The measures set forth in the preceding two paragraphs shall, as regards press, etc., equipped with a processing stage changeover switch, an operation changeover switch or an operation station changeover switch or a safety device changeover switch, be taken in any condition when either one of the said switches is operated.
Article 131-2 (Prevention of Dangers Due to Descent of a Slide)
- (1) The employer shall, in the case where the works of fitting, replacing or adjusting the dies of a power press are carried out, and when a part of the body of the worker engaging in the said work enter a dangerous zone, take such measures as having the said worker use safety blocks, etc., in order to prevent the worker from dangers due to unexpected descent of the slide.
- (2) The worker engaging in the work set forth in the preceding paragraph shall take measures of using a safety block, etc., set forth in the same paragraph.
Article 131-3 (Adjustment of a Die)
- (1) The employer shall, when operating a slide for adjusting a die of a press machine, carry out the operations by inching for the one with an inching mechanism or by manually operating for the one without an inching mechanism.
Article 132 (Maintaining of the Functions of a Clutch, etc.)
- (1) The employer shall maintain the functions of a clutch, a brake and other devices necessary for control of the press, etc., always in effective conditions.
Article 133 (Appointment of an Operations Chief of Press Machines)
- (1) The employer shall, as regards the work set forth in item (vii) of Article 6 of the Order, appoint an operations chief of press machines from the persons who have completed the skill training course for operations chief of press machines.
Article 134 (Duties of an Operations Chief of Press Machines)
- (1) The employer shall have an operations chief of press machines carry out the following matters:
- (i) To inspect a press machine and its safety device.
- (ii) To take necessary measures immediately when having found any abnormalities in a press machine and its safety device.
- (iii) To take custody of a key when having equipped a press machine or its safety device with a changeover key switch.
- (iv) To supervise directly the work of fitting, removing and adjusting a die.
Article 134-2 (Custody, etc., of the Key of a Changeover Key Switch)
- (1) The employer shall, in the case where works other than those set forth in item (vii) of Article 6 of the Order among works using a power press are carried out, and when providing a changeover key switch for the power press and its safety device, designate a person who takes custody of the key switch, and have the said person take custody of the said key.
Article 134-3 (Periodical Self-inspections)
- (1) The employer shall, as regards a power press, carry out self-inspections for the following matters periodically once every period within a year. However, this shall not apply to the non-use period of a power press, which is not used for a period exceeding one year:
- (i) Abnormalities in crankshafts, flywheels and other power transmission devices.
- (ii) Abnormalities in a clutch, a brake and other controlling system.
- (iii) Abnormalities in a one-stroke one-stop mechanism, a quick stop mechanism or emergency stop devices.
- (iv) Abnormalities in a slide, a connecting rod or other slide-related parts.
- (v) Abnormalities in a magnet valve, a pressure control valve or other air pressure system.
- (vi) Abnormalities in a magnet valve, a hydraulic pump or other hydraulic systems.
- (vii) Abnormalities in a limit switch, a relay or other electrical systems.
- (viii) Abnormalities in a die cushion and its accessories.
- (ix) Abnormalities in the mechanism for preventing dangers due to a slide.
- (2) The employer shall, as regards the power press set forth in the proviso of the preceding paragraph, carry out self-inspection for the matters listed in each item of the same paragraph before resuming the operation.
Article 135
- (1) The employer shall, as regards a power-driven shearing machine, carry out self-inspections for the following matters periodically once every period within a year. However, this shall not apply to the non-use period of a power-driven shearing machine, which is not used for a period exceeding one year:
- (i) Abnormalities in a clutch and a brake.
- (ii) Abnormalities in a sliding mechanism.
- (iii) Abnormalities in one stroke one-stop mechanism, a quick stop mechanism, and an emergency stop device.
- (iv) Abnormalities in a magnet valve, a pressure-reducing valve and a pressure gauge.
- (v) Abnormalities in wiring and switches.
- (2) The employer shall, as regards the shearing machine set forth in the proviso of the preceding paragraph, carry out self-inspection for the matters listed in each item of the same paragraph before resuming the operation.
Article 135-2 (Record of Periodical Self-inspections)
- (1) The employer shall, when having carried out the self-inspections set forth in the preceding two Articles, record the following matters and preserve the records for three years:
- (i) The date of the inspection
- (ii) The method of the inspection
- (iii) The parts of a machine inspected
- (iv) The results of the inspection
- (v) The full name of the person who has carried out the inspection
- (vi) When measures such as the repair have been taken based on the result of the inspection, their contents.
Article 135-3 (Specified Self-inspections)
- (1) The self-inspection prescribed by the Ordinance of the Ministry of Health, Labour and Welfare set forth in paragraph (2) of Article 45 of the Act pertaining to a power press (hereinafter referred to as the “specified self-inspection”) shall be the self-inspection prescribed by Article 134-3.
- (2) The worker who is in possession of the qualifications prescribed by the Ordinance of the Ministry of Health, Labour and Welfare set forth in paragraph (2) of Article 45 of the Act pertaining to a power press shall be the person who falls under any of the following each item:
- (i) A person who falls under any of the following categories and has completed the training course provided by the Minister of Health, Labour and Welfare:
- (a) A person who has majored in and graduated from an engineering course of a university or a technical collage accredited under the School Education Act, and has experiences having engaged in the work of checkup or maintenance of a power press for two years or longer or design or manufacture of a power press for five years or longer.
- (b) A person who has majored in and graduated from an engineering course of a senior high school or a secondary education school accredited under the School Education Act and has experiences having engaged in the work of checkup or maintenance of a power press for four years or longer or design or manufacture of a power press for seven years or longer.
- (c) A person who has experiences having engaged in the work of checkup or maintenance of a power press for seven years or longer or design or manufacture of a power press for 10 years or longer.
- (d) A person who has completed the skill training course for operations chief of press machine listed in item (2) of Appended Table 18 of the Act and who has experiences having engaged in the work using a power press for 10 years or longer.
- (ii) Other persons provided by the Minister of Health, Labour and Welfare.
- (i) A person who falls under any of the following categories and has completed the training course provided by the Minister of Health, Labour and Welfare:
- (3) As regards the application of the provision of the preceding Article in the case when having a registered inspection agency set forth in paragraph (2) of Article 45 of the Act (hereinafter referred to as “the registered inspection agency”) implement the specified self-inspection pertaining to a power press, the term “the name of the person who has carried out the inspection” in item (v) of the same Article shall be deemed to be replaced with “the name of the registered inspection agency.”
- (4) The employer shall, when having carried out the specified self-inspection pertaining to a power press, affix an inspection sticker stating the month and year when the said specified self-inspection was carried out at a readily visible location of the said power press.
Article 136 (Checkup before Commencing the Work)
- (1) The employer shall, when carrying out the work using press, etc., check the following matters before commencing the work for the day:
- (i) The function of a clutch and a brake.
- (ii) The slackness of a bolt of a crankshaft, a flywheel, a slide, a connecting rod and a connecting screw.
- (iii) The function of one-stroke one-stop mechanism, quick stop mechanism and emergency stop device.
- (iv) The function of mechanism for preventing dangers due to a slide or a blade.
- (v) The conditions of a die and a bolster for a press machine.
- (vi) The conditions of a blade and a table for a shearing machine.
Article 137 (Repair of Press, etc.)
- (1) The employer shall, when having found any abnormalities in the case when having carried out the self-inspection set forth in Article 134-3 or 135, or the checkup set forth in the preceding Article, immediately repair or take other necessary measures.
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