This Specification specifies the construction requirements and quality standard of the steel structures like welded barrel, flare structure, frame and pipe rack, and it is applicable to the construction and acceptance of carbon construction steel, structural steel of low content alloy and structural steelwork of petrochemical industry which made of stainless steel.
1. Scope
2 Normative documents
3 Terms and Definitions
3.1 Welded barrel
3.2 Flare structure
3.3 Frame
3.4 Pipe rack
4 General Principles
4.1 General Requirements
4.2 Discharging and lofting
4.3 Marking
4.4 Material cutting and edge preparation
4.5 Drilling
4.6 Redress and moulding
4.7 The acceptance and store of members and spares
5 Material
5.1 Genneral requirement
5.2 Steel products
5.3 Welding material
5.4 Fastening standard parts of joint-used
5.5 Other materials
6 Manufacture of welded barrel
6.1 Manufacture of shell ring
7 Manufacture of flare structure
8 Manufacture of frame and pipe rack
8.1 Assembly requirements of member
8.2 Tip milling and friction surface treatment
9 Weld
9.1 Preparation before welding
9.2 Requirements of weld
9.3 Quality inspection
9.4 Thermal treatment
10 Rust removal and painting
10.1 Rust removal
10.2 Painting dressing of anti-corrosive paint
10.3 The painting dressing of fire-retardant coating
11 Installation of steel structure
11.1 Genneral requirement
11.2 Foundation acceptance
11.3 Installation of flare structure
11.4 Installation of welded barrel
11.5 The installation of frame and pipe rack
12 Engineering acceptance
Appendix A
Appendix B
Appendix C
Wording Explanations
