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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 2. Installation

(Notification on Installation)

  1. 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)
  1. 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. 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)
  1. 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.

    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)
  1. 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)

  1. 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.
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