1 Scope
This standard specifies the requirements of welding technology and inspection for pipelines and vessels manufactured and installed on site for aluminum-made air separation plant (hereinafter referred to as "air separation plant").
This standard is applicable to the installation welding of aluminum-made air separation plant.
2 Normative References
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
Contents
Foreword I
1 Scope
2 Normative References
3 Basic Requirements for Installation Organization
4 Materials
5 Filler Material for Welding
6 Welding Procedure Qualification
7 Welders
8 Welding of Upper Column and Main Condenser Assembly
9 Welding of Field Assembly of Segmented Upper Column and Crude Argon Column
10 Pipeline Cleaning and Welding
11 Post-welding Inspection of Pipeline Weld
12 Voltage Withstand and Airtightness Test
Appendix A (Informative) Groove Type, Characteristic and Application Scope of Pipeline Welding Joint
Figure 1 Groove Type for Assembly and Welding of Upper Column and Main Condenser
Figure 2 Groove Type for on-site Assembly and Welding of Segmented Upper Column and Argon Column Incapable of Both-side Welding
Figure 3 Built-in Stainless Steel Subplate
Figure 4 Fillet Weld Thickness
