唐山LNG项目16万m^3 LNG储罐施工控制要点

Key Control Points of 160000 m^3 LNG Storage Tank Construction in Tangshan LNG Project

结合唐山LNG项目16万m3 LNG储罐的建造,介绍了储罐内罐建造工艺流程和06Ni9钢焊接施工基本要求,详细阐述了内罐底板、壁板、大角焊缝、TCP的焊接施工,以及储罐压力试验等重点工序的施工要点。由于实施严格的过程控制,保质保量地完成了LNG储罐内罐的施工,第1~4带罐板焊接质量一次合格率为98.96%,其他各项指标均在受控范围之内。

Combined with the construction of 160 000 m3 LNG storage tank, the inner tank construction process flow and the basic requirement of 06Ni9 steel welding are presented, and the key points of important construction procedures such as the welding of inner tank bottom plates, wall plates, P-type seams and TCP as well as the tank pressure tests are illustrated. Because of elaborate and strict process control, the inner tank of the LNG storage tank is built with quality and quantity guaranteed, its primary qualified rate is 98.96%, the other indexes are all within the control ranges.