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ASME U Stamp MACOGA Expansion Joints
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Since 1997 MACOGA has been designing and supplying expansion joints in accordance with ASME Section VIII, Div 1 Appendix 26 providing ASME Code Stamp and U-2 Partial Data Reports. The ASME International Boiler and Pressure Vessel Code establish rules governing the design, fabrication, and inspection of boilers and pressure vessels, and nuclear power plant components during construction. The ASME Boiler and Pressure Vessel Code is in a class of its own and it is internationally renowned.
MACOGA MACOGA, S.A. · Leira s/n · 15680 Ordenes · La Coruña · Spain · Tel: +34 981 68 00 00 · [email protected] · www.macoga.com
ASME 'U' Stamp Expansion Joints
The ASME U Code Symbol Requirements The requirements of applying a U Code Symbol to an Expansion Joint encompass the whole process from design to purchasing to production and testing. Starting right with the design, there are rules to be followed. Parameters such as wall thicknesses, materials, welding details, and extent of non-destructive examination are determined by design conditions such as pressure, temperature, and corrosion allowance, fluid running through the Expansion Joint, and any specific requests from the customer. Based on these conditions a comprehensive set of calculations are prepared. They are reviewed and approved by the ASME Inspector.
Once the design has been approved, the materials can be purchased and must comply with the Boiler and Pressure Vessel Code. All material must be clearly identified to trace it to the applicable Material Test Report. The ASME Inspector will check the material and review the Material Test Reports to ensure their conformity to the Code.
Before production can begin, the Inspector will verify that the weld procedure to be used has been qualified and the welders performing the welding are certified. This is in accordance with Section IX. The next step is to review the unit after fabrication is complete to ensure welding was performed to Code requirements and all non-destructive testing results. The Authorized Inspector will witness the hydrostatic test performed in accordance with the requirements of Section VIII Division 1. The final step is the application of the nameplate. This is also witnessed by the Inspector. The nameplate will be marked with relevant design conditions and the U Code Symbol.
Any Expansion Joint stamped with this symbol has been built strictly in accordance with the provisions of the ASME Boiler and Pressure Vessel Code.
MACOGA MACOGA, S.A. · Leira s/n · 15680 Ordenes · La Coruña · Spain · Tel: +34 981 68 00 00 · [email protected] · www.macoga.com
ASME 'U' Stamp Expansion Joints
