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JICOSH Home > Laws > Ordinance on Safety of Boilers and Pressure Vessels

Ordinance on Safety of Boilers and Pressure Vessels

Ministry of Labour Ordinance No.33 of September 30, 1972
Latest Amendments:
Ministry of Health, Labour and Welfare Ordinance No. 171 of July 16, 2001

In Japanese


Chapter III. First Class Pressure Vessels


Section 1. Manufacturing

(Permission for Manufacturing)

Article 49. A person who is to manufacture first class pressure vessels (excluding small-sized pressure vessels, hereinafter the same in this Chapter) shall obtain in advance permission from the Director General of the competent Prefectural Labour Bureau for the first class pressure vessels concerned. However, this provision shall apply to the first class pressure vessels similar in model to those which have already been permitted for manufacturing (hereinafter referred to as the "permitted model first class pressure vessels").

2. A person who is to obtain the permission specified by the preceding paragraph shall submit an Application of Permission for Manufacturing of First Class Pressure Vessel (Form No.1) together with drawings showing the construction of the first class pressure vessel concerned and documents stating the following items to the Director General of the competent Prefectural Labour Bureau:

(1) Strength calculation.

(2) Kinds, capacity and number of the equipment used for manufacture and inspection of first class pressure vessel.

(3) Outline of personal history of the person responsible for workmanship.

(4) Qualification and number of the workers who are to be engaged in the actual fabricating work of first class pressure vessels.

(5) In the case of manufacturing the first class pressure vessel by welding, the result of welding procedure tests.


(Report on Change)

Article 50. In the case of manufacturing the first class pressure vessel which was granted the permission provided for by paragraph 1 of the preceding Article or a permitted model first class pressure vessel, when a person who has been granted the said permission changes the equipment as described in item 2 of paragraph 2 of the same Article or the person responsible for workmanship as described in item 3 of the same paragraph, he shall submit a report on the changes concerned without delay to the Director General of the competent Prefectural Labour Bureau.


(Shop Inspection)

Article 51. A person who has manufactured a first class pressure vessel shall have the said first class pressure vessel inspected by the Director General of the competent Prefectural Labour Bureau (for a first class pressure vessel which is to be fabricated at the place where the said first class pressure is to be installed, by the Director General of the Prefectural Labour Bureau which exercises jurisdiction over the area where the first class pressure vessel is to be installed, hereinafter the same in this Article) under the provision of paragraph 1 of Article 38 of the Law.

2. With reference to a first class pressure vessel which is to be fabricated by welding, a person cannot undergo the inspection as provided for by the provision of the preceding Article (hereinafter referred to as "shop inspection?h in this Chapter"), unless the said first class pressure vessel passes the inspection set forth by paragraph 1 of Article 53.

3. A person who is to undergo a shop inspection shall submit an Application for Shop Inspection of First Class Pressure Vessel (Form No.2) together with a first class pressure vessel specification (Form No.23) to the Director General of the competent Prefectural Labour Bureau.

4. The Director General of the competent Prefectural Labour Bureau shall stamp a mark (Form No.4) on the body of the first class pressure vessel which passed the shop inspection, and affix a seal "passed the shop inspection" (Form No.5) on the first class pressure vessel specification concerned and grant the said specification to the applicant.


(Measures to Be Taken When Undergoing a Shop Inspection)

Article 52. A person who undergoes a shop inspection shall perform the following matters.

(1) Place the first class pressure vessel at a position where it can be easily inspected.

(2) Prepare for the hydrostatic pressure test.

(3) Arrange safety valves or other substitutive safety devices (hereinafter referred to as "safety valves" in this Chapter and the following Chapter).

2. The Director General of the Prefectural Labour Bureau may order the following matters to the applicant of shop inspection, when it is deemed necessary in the operation of the said inspection:

(1) To remove all or part of the covering materials of first class pressure vessel.

(2) To draw tubes or rivets, or to put a hole in plates or tubes.

(3) Other matters deemed necessary.

3. A person who undergoes a shop inspection shall be present at the said inspection.


(Welding Inspection)

Article 53. A person who is to weld a first class pressure vessel which is to be fabricated by welding shall have the said first class pressure vessel inspected by the Director General of the competent Prefectural Labour Bureau under the provision of paragraph 1 of Article 38 of the Law. However, this provision shall apply to the first class pressure vessel of which only the parts in which stresses other than compressive stress do not occur are welded.

2. A person who is to undergo an inspection as provided for by the preceding paragraph (hereinafter referred to as the "welding inspection" in this Chapter) shall, before the commencement of the welding operation, submit an Application for Welding Inspection of First Class Pressure Vessel (Form No.7) together with a first class pressure vessel welding specification (Form No.8) to the Director General of the competent Prefectural Labour Bureau.

3. The Director General of the competent Prefectural Labour Bureau shall stamp a mark (Form No.9) on the body of the first class pressure vessel which passed the welding inspection, and affix a seal "passed the welding inspection" (Form No.10) on the first class pressure vessel welding specification concerned and grant the said specification to the applicant.


(Measures to Be Taken When Undergoing a Welding Inspection)

Article 54. The provision of Article 8 shall apply mutatis mutandis to a welding inspection.


(Limitation of Placement)

Article 55. The employer shall place no person in first class pressure vessel welding operations from among the operations set forth in item 4 of Article 20 of the Cabinet Order except one who has obtained a license of special class boiler welder. However, in relation to the operation for which the thickness of welding part is not over 25 mm, or welding is applied for connection of nozzles, flanges, etc., the employer may place one who has obtained a license of ordinary class boiler welder in the said operation.


Section 2. Installation

(Notification on Installation)

Article 56. When the employer who is to install a first class pressure vessel wishes to present a notification under the provision of paragraph 1 of Article 88 of the Law, the employer shall submit a Notification on Installation of First Class Pressure Vessel (Form No.24) together with a first class pressure vessel specification (Form No.23) and documents showing the vicinity of the place where the first class pressure vessel is to be installed and the situation of piping to the Chief of the competent Labour Standards Inspection Office.

2. In presenting a notification in accordance with the provision of the preceding paragraph, the provision of paragraph 1 of Article 85 of the Safety and Health Ordinance shall be applied as follows:

(1) In the case of presenting a notification on first class pressure vessel in conjunction with buildings or other machines, in accordance with the provision of paragraph 1 of Article 88 of the Law, it shall be deemed unnecessary to describe those items in the notification and documents as described in paragraph 1 of Article 85 of the Safety and Health Ordinance but overlap with the items which are included in the notification on installation of first class pressure vessel, first class pressure vessel specification and documents prescribed by the preceding paragraph.

(2) In presenting a notification, in accordance with the provision of paragraph 1 of Article 88 of the Law, only on a first class pressure vessel, the provision of paragraph 1 of Article 85 of the Safety and Health Ordinance shall not be applicable.

3. When the employer (excluding one provided for by paragraph 1 of Article 88 of the Law) wishes to install a first class pressure vessel, he shall, under the provision of paragraph 1 of the same Article which is applied mutatis mutandis in paragraph 2 of the same Article, submit a Notification on Installation of First Class Pressure Vessel (Form No.24) together with a pressure vessel specification and documents as described in paragraph 1 to the Chief of the competent Labour Standards Inspection Office.


(Pre-Installation Inspection)

Article 57. The persons described in the following items shall, under the provision of paragraph 1 of Article 38 of the Law, have the first class pressure vessel specified in the respective items inspected by the Director General of the Prefectural Labour Bureau:

(1) A person who has imported a first class pressure vessel.

(2) A person who is to install a first class pressure vessel which has not been installed for the period of one year or more after the shop inspection or the inspection as prescribed in this paragraph.

(3) A person who is to reinstall or to resume the use of a first class pressure vessel of which use has been discontinued.

2. A person who has manufactured a first class pressure vessel in a foreign country may, under the provisions of paragraph 2 of Article 38 of the Law, have the said first class pressure vessel inspected by the Director General of the Prefectural Labour Bureau. Where said inspection has been conducted, the provisions of the preceding paragraph shall not apply to the person who has imported the said first class pressure vessel.

3. A person who wishes to undergo an inspection as provided for by the preceding two paragraphs (hereinafter referred to as the "pre-installation inspection" in this Chapter) shall submit an Application for Pre-Installation Inspection of First Class Pressure Vessel (Form No.13) together with a first class pressure vessel specification (Form No.23) to the Director General of the Prefectural Labour Bureau.

4. When a person who imported a first class pressure vessel or manufactured it in a foreign country wishes it to undergo a pre-installation inspection, he may attach a document by which a person designated by the Minister of Health, Labour and Welfare (limited to persons with residence in a foreign country) confirms that the construction of the pressure vessel related to the said application is in compliance with the standards (limited only the parts related to the construction of a first class pressure vessel) established by the Minister of Health, Labour and Welfare based on the provision of paragraph 2, Article 37 of the Law for the application prescribed in the preceding paragraph.

5. The Director General of the Prefectural Labour Bureau shall stamp a mark (Form No.4) on the body of the first class pressure vessel which passed the pre-installation inspection, and stamp a mark "passed the pre-installation inspection" (Form No.14) on the first class pressure vessel specification concerned and grant the said specification to the applicant.


(Measures to Be Taken When Undergoing a Pre-Installation Inspection)

Article 58. The provision of Article 52 shall apply mutatis mutandis to a pre-installation inspection.


(Completion Inspection)

Article 59. A person who installed a first class pressure vessel shall, under the provision of paragraph 3 of Article 38 of the Law, have the said first class pressure vessel and its piping inspected by the Chief of the competent Labour Standards Inspection Office. However, this provision shall apply to the first class pressure vessel for which it is deemed that such inspection is not necessary by the Chief of the competent Labour Standards Inspection Office.

2. The inspection as provided for by the preceding paragraph (hereinafter referred to as the "completion inspection" in this Chapter) shall not be undergone unless a first class pressure vessel passes the shop inspection or pre-installation inspection.

3. A person who wishes to undergo a completion inspection shall submit an Application for Completion Inspection of First Class Pressure Vessel (Form No.15) to the Chief of the competent Labour Standards Inspection Office.


(First Class Pressure Vessel Inspection Certificate)

Article 60. The Chief of the competent Labour Standards Inspection Office shall issue a first class pressure vessel inspection certificate (Form No.6) in relation to the first class pressure vessel which passed the completion inspection or those as described by the provision of paragraph 1 of the preceding Article.

2. When a person who has installed a first class pressure vessel has lost or damaged a first class pressure vessel inspection certificate, he shall submit an Application for Reissuance of First Class Pressure Vessel Inspection Certificate (Form No.16) together with the following documents to the Chief of the competent Labour Standards Inspection Office, and shall have the said inspection certificate reissued.

(1) When he has lost a first class pressure vessel inspection certificate, a document showing the fact.

(2) When he has damaged a first class pressure vessel inspection certificate, the said inspection certificate,


(Place Where First Class Pressure Vessel Is Installed)

Article 61. The first class pressure vessel shall be installed at a place where no difficulty is expected in handling, inspection and cleaning of the said first class pressure vessel.

2. The provision of Article 21 shall apply mutatis mutandis to an open fire type first class pressure vessel.


Section 3. Management

(Appointment of an Operations Chief of Work Handling First Class Pressure Vessels)

Article 62. The employer shall appoint an operations chief of work handling first class pressure vessels from among those who have completed the skill training course for operations chiefs of work handling first class pressure vessels related to chemical facilities in the case of work handling first class pressure vessels related to chemical facilities (chemical facilities shall be defined as those set forth in item 4 of paragraph 1 of Article 15 of the Cabinet Order, hereinafter the same) from among the types of work as described in item 17 of Article 6 of the Cabinet Order, and from among special class boiler operators, first class boiler operators, second class boiler operators or those who have completed the skill training course for operations chiefs of work handling first class pressure vessels related to chemical facilities or the skill training course for operations chiefs of work handling ordinary first class pressure vessels in the case of types of work other than the work handling first class pressure vessels related to chemical facilities from among the types of work set forth in item 17 of the Cabinet Order, respectively.

2. Notwithstanding the provisions of the preceding paragraph, the employer shall, with regard to those jobs set forth in item 17 of Article 6 of the Cabinet Order which are related to any of the first class pressure vessels under the Electric Utility Law (Law No.170 of 1964), the High Pressure Gas Safety Law or the Gas Utility Law (Law No.51 of 1954), appoint an operations chief of work handling first class pressure vessels from among those who have obtained a license of operations chief of work handling specified first class pressure vessels (for the work handling first class pressure vessels related to chemical facilities from among the said types of work, only limited to those who are described in item 2 or 3 of paragraph 1 of Article 119 and have obtained a license of operations chief of work handling specified first class pressure vessel).


(Duties of an Operations Chief of Work Handling First Class Pressure Vessels)

Article 63. The employer shall have an operations chief of work handling first class pressure vessels perform the following matters:

(1) Refrain from raising pressure over the maximum allowable working pressure.

(2) Maintain the function of safety valves.

(3) When first operating a first class pressure vessel, or changing the operating methods or the kind of materials to be handled in the said first class pressure vessel, have the workers in advance know well the procedures of the said operation and superintend the said operation directly.

(4) Take necessary measures immediately, if any abnormality is found concerning a first class pressure vessel or its piping.

(5) Check the condition of temperature, pressure, etc., in a first class pressure vessel at any time, and take necessary measures, if any abnormality is found.

(6) Record the necessary matters regarding the operating conditions of facilities related to first class pressure vessels and guarantee that they are transferred to the next shift.


(Prohibition of Use)

Article 64. The employer shall not use a first class pressure vessel which is not in conformity with the standards (only limited to the parts related to the construction of first class pressure vessels) as provided for by the Minister of Health, Labour and Welfare on the basis of the provision of paragraph 2 of Article 37 of the Law .


(Management of Fittings)

Article 65. The employer shall, with regard to the management of safety valve and other fittings of first class pressure vessel, perform the following matters:

(1) Adjust safety valves to let them operate at the maximum allowable working pressure or lower.

(2) With regard to a pressure gauge, prevent vibration from hindering its function, and take necessary measures to prevent their insides from freezing and also to maintain the temperature less than 80 degrees.

(3) With regard to the dials of pressure gauges, put up easily visible indications at the position showing the maximum allowable working pressure of the first class pressure vessel concerned.

2. When two or more safety valves are provided, and one of them is adjusted in order to operate at the maximum allowable working pressure or lower, the employer may, notwithstanding the provision of item 1 of the preceding paragraph, adjust other safety valves to let them operate at the pressure three percent over the maximum allowable working pressure or lower.


(Indication)

Article 66. The employer shall put up the name(s) of an operations chief(s) of work handling first class pressure vessels at an easily visible location in the place where the first class pressure vessel is installed.


(Periodical Voluntary Inspection)

Article 67. With regard to a first class pressure vessel, the employer shall implement voluntary inspection, periodically, and at least once for every period not exceeding one month after the commencement of operation, on the following matters, provided that this provision shall not apply to a non-use period of first class pressure vessels which are not used for a period exceeding one month:

(1) Existence of damage to the vessel itself.

(2) Existence of wear in the locking bolts of cover plate.

(3) Existence of damage in the tubes or valves.

2. With regard to the first class pressure vessels as described in the proviso of the preceding paragraph, the employer shall, before the resumption of use, implement voluntary inspection on the matter as described in each item of the same paragraph.

3. When having implemented the voluntary inspections as set forth by the preceding two paragraphs, the employer shall record their results and preserve such records for three years.


(Repairs, etc.)

Article 68. In the event that any abnormality has been found as the result of the voluntary inspection as set forth by paragraph 1 or 2 of the preceding Article, the employer shall take such necessary measures as repairs, etc.


(Measures to Be Taken When Entering the Inside of a First Class Pressure Vessel)

Article 69. When the employer has a worker enter a first class pressure vessel in order to perform cleaning, repairs, etc., the employer shall take the following measures:

(1) Cool the first class pressure vessel.

(2) Ventilate the inside of the first class pressure vessel.

(3) With regard to the mobile electric wires used in first class pressure vessel, use cabtire cable or one having the same or more insulating effect and strength, and for the mobile electric light, use one provided with a guard.

(4) Shut off securely the valve connections between boilers in operation and other pressure vessels.


(Limitation of Placement)

Article 70. The employer shall place no person in the maintenance work of first class pressure vessels from among the types of work as set forth in item 5 of Article 20 of the Cabinet Order except one who has obtained a license of boiler maintenance worker.

Article 71. Deleted.


Section 4. Performance Inspection

(Validity Term of First Class Pressure Vessel Inspection Certificate)

Article 72. The validity term of a first class pressure vessel inspection certificate shall be one year.


(Performance Inspection, etc.)

Article 73. A person who intends obtaining a renewal of the validity term of a first class pressure vessel inspection certificate shall undergo a performance inspection in respect of the first class pressure vessel related to the said inspection certificate and its piping.

2. The Chief of the competent Labour Standards Inspection Office or the Authorized Agency for Performance Inspection shall renew the validity term of a first class pressure vessel inspection certificate for the first class pressure vessel which passed the performance inspection as provided for by the preceding paragraph. In this case, the Chief of the competent Labour Standards Inspection Office or the Authorized Agency for Performance Inspection may renew a validity term of shorter than one year or longer than one year, but not over two years, based on the results of a performance inspection.


(Application of Performance Inspection, etc.)

Article 74. A person who intends to undergo a performance inspection related to a first class pressure vessel and to be implemented by the Chief of the Labour Standards Inspection Office shall submit an Application for Performance Inspection of First Class Pressure Vessel (Form No.19) to the Chief of the competent Labour Standards Inspection Office.


(Measures to Be Taken When Undergoing a Performance Inspection)

Article 75. A person who undergoes a performance inspection related to a first class pressure vessel shall cool the first class pressure vessel concerned, clean it, and make other preparations required for the performance inspection. However, cooling and cleaning may be omitted first class pressure vessels so approved by the Chief of the competent Labour Standards Inspection Office.

2. The provision of paragraph 2 and 3 of Article 52 shall apply mutatis mutandis to a performance inspection related to a first class pressure vessel. In this case, the term "the Director General of the Prefectural Labour Bureau" used in paragraph 2 of the said Article shall be read as "the Chief of the Labour Standards Inspection Office".


Section 5. Alteration, Suspension and Discontinuance of Use

(Notification of Alteration)

Article 76. When the employer who is to alter the shell, end plate, bottom plate, tube plate, cover plate or stay wishes to present a notification in accordance with the provision of paragraph 1 of Article 88 of the Law, he shall submit a Notification on Alteration of First Class Pressure Vessel (From No. 20) together with a first class pressure vessel inspection certificate and a document showing the content of the alteration concerned to the Chief of the competent Labour Standards Inspection Office.

2. The provision of paragraph 2 of Article 56 shall apply mutatis mutandis to the case when the notification under the provision of the preceding paragraph is submitted. In this case, the phrase "notification on installation of first class pressure vessel, first class pressure vessel specification and documents prescribed by the preceding paragraph" used in item 1 of paragraph 2 of the same Article shall be read as "notification on alteration of first class pressure vessel and documents prescribed by paragraph 1 of Article 76."

3. When the employer (excluding those described in paragraph 1 of Article 88 of the Law) wishes to alter any part of a first class pressure vessel prescribed in paragraph 1, under the provision of paragraph 1 of the same Article which is applied mutatis mutandis in paragraph 2 of the same Article, he shall submit a Notification on Alteration of First Class Pressure Vessel (Form No. 20) together with a first class inspection certificate and a document prescribed in paragraph 1 to the Chief of the competent Labour Standards Inspection Office.


(Alteration Inspection)

Article 77. A person who has altered any part of a first class pressure vessel specified in paragraph 1 of the preceding Article, under the provision of paragraph 3 of Article 38 of the Law, shall have the said first class pressure vessel inspected by the Chief of the competent Labour Standards Inspection Office. However, this provision shall apply to the first class pressure vessel for which it is deemed that the said inspection is not necessary by the Chief of the competent Labour Standards Inspection Office.

2. A person who intends to undergo an inspection under the provision of the preceding paragraph (hereinafter referred to as the "alteration inspection" in this Chapter) shall submit an Application for Alteration Inspection of First Class Pressure Vessel (Form No.21) to the Chief of the competent Labour Standards Inspection Office.

3. The provisions of paragraph 2 and 3 of Article 52 shall apply mutatis mutandis to an alteration inspection. In this case, the term "the Director General of the Prefectural Labour Bureau" used in paragraph 2 of the said Article shall be read as "the Chief of the Labour Standards Inspection Office".


(Endorsement of First Class Pressure Vessel Inspection Certificate)

Article 78. The Chief of the Labour standards Inspection Office endorses, with regard to the first class pressure vessel which passed the alteration inspection (including the first class pressure vessels set forth by the provision of paragraph 1 of the preceding Article), the first class pressure vessel inspection certificate concerned, in respect of the date of inspection, parts of first class pressure vessel altered and the results of inspection.


(Change of the Employer etc.)

Article 79. With regard to an installed first class pressure vessel, when the employer has changed, the new employer shall, within ten days after change, submit an Application for Renewal of First Class Pressure Vessel Inspection Certificate (Form No.16) together with a first class pressure vessel inspection certificate to the Chief of the competent Labour Standards Inspection Office, and shall have the said inspection certificate renewed.


(Suspension)

Article 80. When a person who has installed a first class pressure vessel intends to suspend the use of the first class pressure vessel, and the period of suspension to be intended is over the validity term of a first class pressure vessel inspection certificate, he shall report the fact within the validity term of the said first class pressure vessel inspection certificate to the Chief of the competent Labour Standards Inspection Office.


(Inspection for Resumption of Use)

Article 81. A person who intends to resume the use of a first class pressure vessel in suspension, shall, under the provision of paragraph 3 of Article 38 of the Law, have the said first class pressure vessel inspected by the Chief of the competent Labour Standards Inspection Office.

2. A person who intends to undergo an inspection under the provision of the preceding paragraph (hereinafter referred to as the "inspection for resumption of use" in this Chapter) shall submit an Application of Inspection for Resumption of Use of First Class Pressure Vessel (Form No.22) to the Chief of the competent Labour Standards Inspection Office.

3. The provisions of paragraph 2 and 3 of Article 52 shall apply mutatis mutandis to inspection for resumption of use. In this case, the term "the Director General of the Prefectural Labour Bureau" used in paragraph 2 of the same Article shall be read as "the Chief of the Labour Standards Inspection Office".


(Endorsement of First Class Pressure Vessel Inspection Certificate)

Article 82. The Chief of the Labour Standards Inspection Office endorses, with regard to the first class pressure vessel which passed an inspection for resumption of use, the first class pressure vessel inspection certificate concerned, in respect of the date of inspection and results of inspection.


(Return of First Class Pressure Vessel Inspection Certificate)

Article 83. When the employer discontinues the use of a first class pressure vessel, he shall without delay return the first class pressure vessel inspection certificate to the Chief of the competent Labour Standards Inspection Office.


INDEX
I / II / III / IV
V / VI / VII / VIII


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