Detail of EJ/T 1027.17-1996

Introduction of EJ/T 1027.17-1996

Welding code for mechanical components of PWR nuclear islands Procedure qualification of repair welding for weld defects 1 Subject content and application scope This standard specifies the requirements for procedure qualification of repair welding process in the design, manufacture and installation of nuclear island mechanical equipment of pressurized water reactor (PWR) power plants. This standard is applicable to the procedure qualification of repair welding for welds of carbon steel or low alloy steel, austenitic stainless steel, austenitic stainless steel build-up welding layer on carbon steel or low alloy steel and nickel-based alloy surfacing layers. 2 Normative references EJ/T 501 300,000 kW pressurized water reactor nuclear power plant - Magnetic particle testing EJ/T 502 300,000 kW pressurized water reactor nuclear power plant - Liquid penetration inspection EJ/T 1027.11 Welding rules for mechanical components of PWR nuclear islands - Welding procedure qualification of carbon steel and low alloy steel EJ/T 1027.12 Welding rules for mechanical components of PWR nuclear islands - Welding procedure qualification of austenitic stainless steel EJ/T 1027.14 Welding rules for mechanical components of PWR nuclear islands - Welding procedure qualification of corrosion-resistant build-up welding layer of austenitic stainless steel EJ/T 1027.15 Welding rules for mechanical components of PWR nuclear islands - Welding procedure qualification of corrosion-resistant build-up welding layer of nickel-based alloy 3 Basic requirements 3.1 The welding method used for repair welding must be qualified. Qualification for corresponding welds shall be carried out according to EJ/T 1027.11, EJ/T 1027.12, EJ/T 1027.14 and EJ/T 1027.15 respectively. 3.2 Simulated repair welding tests must be carried out on procedure qualification test pieces or mock-up pieces under the following circumstances. 3.2.1 Simulated repair welding test must be conducted before repair welding of build-up layer and isolation layer of austenitic stainless steel and nickel-based alloy on carbon steel and low alloy steel. 3.2.2 In the case of manual build-up welding of nickel-based alloy and isolation layer on carbon steel and low alloy steel, if repair welding is carried out according to the same welding process, a simulated repair welding test is not required.

Contents of EJ/T 1027.17-1996

Foreword i Procedure qualification of repair welding for weld defects 1 Subject content and application scope 2 Normative references 3 Basic requirements 4 Effective range of qualification 5 Implementation of repair welding on weld 6 Inspection items and qualification requirements of repair welding test pieces 7 Test report