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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 VI. License

Section 2. License of Special Class Boiler Welder and License of Ordinary Class Boiler Welder

(Persons Qualified for the License)

Article 104. The license of special class boiler welder and the license of ordinary class boiler welder shall be granted to persons who have passed the license examination for special class boiler welders, or those who have passed the license examination for ordinary class boiler welders or those who have been exempted from all subjects of the written test and all of the practical test in the license examination for ordinary class boiler welders under the provision of Article 111 by the Director General of the Prefectural Labour Bureau, respectively.

(Disqualification for the License)

Article 105. Persons described by the Ministry of Health, Labour and Welfare Ordinance based on the provision of item 2 of paragraph 2 of Article 72 of the Law relating to the license of special class boiler welder and the license of ordinary class boiler welder shall be the persons who are under eighteen years of age.

(Person Designated by the Ministry of Health, Labour and Welfare Ordinance based on the Provision of Paragraph 3 of Article 72 of the Law)

Article 105-2. Persons designated by the Ministry of Health, Labour and Welfare Ordinance based on the provision of paragraph 3 of Article 72 of the Law relating to the license of special class boiler welder and the license of ordinary class boiler welder shall be the persons who can not operate appropriately the necessary welding equipment in carrying out the work relating to the license due to the mental or physical function disorder.

(Consideration of Measures, etc., to Cover Handicap)

Article 105-3. In case the applicant for the license of special class boiler welder or ordinary class boiler welder shall be the person described in preceding provisions, when the Director General of the Prefectural Labour Bureau decides to grant a license or not, he shall consider that the disorder is covered and the level of disorder is mitigated by the measures and treatments to cover the handicap.

(License with Reservation)

Article 106. The Director General of the Prefectural Labour Bureau may grant a license of special class boiler welder or a license of ordinary class boiler welder to a handicapped person suffering mental or physical function disorder with the limitation of operations he is able to perform and the necessary reservations concerning the operation.

(Validity Term of License)

Article 107. The validity term of the license of special class boiler welder and the license of ordinary class boiler welder shall be two years.

2. The Director General of the Prefectural Labour Bureau shall not renew the validity term of such license except in the case where the special class boiler welder or the ordinary class boiler welder (hereinafter referred to as the "boiler welder?h in this Article) has welded a boiler or boilers and/or a first class pressure vessel or vessels within one year of the end of the term of validity of his or her license and all the boilers or first class pressure vessels welded by the boiler welder in the validity term of the said license have passed the welding inspection as provided for by paragraph 2 of Article 7 or paragraph 2 of Article 53 or the alteration inspection as provided for by paragraph 2 of Article 42 or paragraph 2 of Article 77, and the case where the skill of the boiler welder is considered as not decreasing.

3. Any person who intends to renew his or her license of special class boiler welder or of ordinary class boiler welder shall submit an Application for Renewal of License (Form No.12 under the Safety and Health Ordinance) within the validity term of the said license to the Director General of the Prefectural Labour Bureau who has granted the said license or who has jurisdiction over the district in which such person's residence is located.

Article 108. Deleted.

(Qualification for Taking the License Examination)

Article 109. With regard to a license examination for special class boiler welders, no person except those who have experience in the welding operation of boilers or first class pressure vessels for at least one year after the receiving of a license of ordinary class boiler welder can take this license examination.

2. Those other than persons who have experience in the welding operation at least one year can not take a license examination for ordinary class boiler welders.

(Subjects of Examination in the License Examination)

Article 110. The license examination for special class boiler welders and the license examination for ordinary class boiler welders shall be conducted with a written test and practical test, and the practical test shall be implemented for the persons who have passed the written test.

2. The written test shall be conducted in term of the following subjects:

(1) Knowledge of the construction of boilers, and materials used for boilers.

(2) Workmanship and methods of repairs of boilers.

(3) Knowledge of the outline of welding procedures.

(4) Knowledge of the outline of electrodes and properties of welded parts.

(5) Knowledge of the outline of inspection methods for welded parts.

(6) Knowledge of the operation of welding machines and related equipment.

(7) Knowledge of safe welding operations.

(8) Related laws and ordinances.

3. Practical test shall be conducted with a butt welding.

(Exemption of Subjects of Examination)

Article 111. The Director General of the Prefectural Labour Bureau shall exempt the subjects of examination shown in the right column of the following table for the persons shown in the middle column of the same table according to the classification of the license examination shown in the left column of the same table.

Classification of license examination Persons exempted from subject of examination Subjects of Examination to be exempted
License
Examination
for special
class boiler
welders
(1) Persons who have passed the written test in the last license examination for special class boiler welders conducted by the Director General of the Prefectural Labour Bureau who intends to conduct the license examination concerned.
(2) Persons who have passed the written test in the license examination for special class boiler welders conducted by the designated testing institution (designated testing institution shall be defined as that which is specified by the provision of paragraph 1 of Article 75-2 of the Law, hereinafter the same) which intends to implement the said license examination, and for which no more than one year has passed since the date of the said written test.
(3) Persons who had the license of special class boiler welder, and for whom two years have not passed after the expiration of the validity term of the said license.
All subjects in the the written test
License
Examination
of ordinary
class boiler
welders
(1) Persons who have passed the written test in the last license examination for ordinary class boiler welders conducted by the Director General of the Prefectural Labour Bureau who intends to conduct the license examination concerned.
(2) Persons who have passed the written test in the license examination for ordinary class boiler welders conducted by the designated testing institution which intends to conduct the license examination concerned, and for which no more than one year has passed since the date of the said written test.
(3) Persons who had the license of ordinary class boiler welder, and for whom two years have not passed after the expiration of the validity term of the said license.
All subjects in the the written test
(1) Persons who have passed the welding skill test in category A of first class, category A of second class, category B of first class, category B of second class, or category D of first class, as provided for by Section 3 of Chapter 25 of the Construction Rules of Steel Vessels (Ministry of Communication Ordinance No.24 of 1940).
(2) Persons who have been considered as having the same or more ability regarding butt welding compared with the persons described in the preceding item by the Director General of the Prefectural Labour Bureau.
All of the practical test
(Details of License Examination)

Article 112. Such details necessary for implementing a license examination for special class boiler welders and a license examination for ordinary class boiler welders, besides those prescribed by Article 71 of the Safety and Health Ordinance and the preceding three Articles shall be set forth by the Minister of Health, Labour and Welfare.

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