Page 195 - Water Standards
P. 195

4  Installation of Metal Structures and
                          Turbine⁃generator Units


                  4   1  Installation of Hydraulic Metal Structures

           4   1   1  Installation of hydraulic metal structures shall meet the follow⁃
           ing requirements:
                1  The technical documentation shall meet the following require⁃
           ments:
                  1) Before the installation of metal structures, the following
                     documents shall be prepared: manufacturing documents;
                     installation drawings and technical instructions; product
                     quality certifications; and layout drawings of the hydraulic
                     structures and drawings of measurement points.
                  2) The installation of metal structures shall comply with the
                     design drawings and relevant technical documents. If there
                     is any modification, a notification of modification or
                     written consent signed by the design department shall be
                     provided.
                2  The materials used shall meet the following requirements:
                  1) The materials used in the installation of metal structures
                     shall meet the requirements of the design drawings. The
                     properties shall meet the requirements of relevant current
                     standards. The product shall have quality certification; if
                     there is no certification or the mark number is not clear,
                     the material shall be rechecked. The material can be used
                     only when it has passed the rechecking.
                  2) Material used in welding shall have quality certifications.
                     Indices such as chemical composition, mechanical proper⁃
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