Editorial supervision by Government Buildings Department, Minister’s Secretariat, Ministry of Land, Infrastructure, Transport and Tourism
Public Construction Work Standards Specifications (Machinery and Equipment Work), FY 2019 edition
1.4.2 Quality of materials etc.
- (b) Materials used in water supply equipment, water heaters etc. must comply with the “Ministerial Order on Standards for Structure and Materials of Water Supply Devices”
(Ordinance of the Ministry of Health and Welfare No. 14 of 1997).
- (c) Documents demonstrating that the materials used have the quality and performance specified in the design documents are to be provided to supervisory staff.
However, provision of documents can be omitted if the design documents include materials specified by JIS, JAS, or in the “Ministerial Order on Standards for Structure and Materials of Water Supply Devices,” the materials used carry the JIS logo, JAS logo, or certification authority logo indicating that they are compliant with the “Ministerial Order on Standards for Structure and Materials of Water Supply Devices,” and agreement has been received in advance from the supervisory staff.
* Excludes PT Connectors