scholarly journals The influence of fire exposure on austenitic stainless steel for pressure vessel fitness-for-service assessment: Experimental research

2017 ◽  
Author(s):  
Bo Li ◽  
Wenhua Shu ◽  
Yantian Zuo
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Experimental Research ◽  
Pressure Vessel ◽  
Fire Exposure

scholarly journals Forming of Ellipse Heads of Large-scale Austenitic Stainless Steel Pressure Vessel

2014 ◽  
Vol 81 ◽  
pp. 837-842 ◽  
Author(s):  
Hui Wang ◽  
Jie Zhou ◽  
Yan Luo ◽  
Peng Tang ◽  
Youliang Chen
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Pressure Vessel ◽  
Large Scale

scholarly journals Korosi H2S dan CO2 pada Peralatan Statik di Industri Minyak dan Gas

2015 ◽  
Vol 2 (1) ◽  
pp. 18-22
Author(s):  
Yunita Sari ◽  
Siska Titik Dwiyati
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Pressure Vessel

Perhatian utama pada desain dan pemilihan material logam untuk peralatan statik seperti pressure vessel dan heatexchanger pada industri minyak dan gas adalah kerentanannya terhadap fluida yang mengandung hidrogen sulfida(H2S) dan karbon dioksida (CO2). Material yang menjadi objek pada penelitian ini adalah baja karbon rendah (lowcarbon steel) dan baja tahan karat (stainless steel) dari tipe yang paling sering digunakan di industri minyak dangas, yaitu baja karbon rendah A-283 Grade C dan A-516 Grade 70, serta baja tahan karat austenitik 304 L dan 316L. Korosi pada logam baja oleh H2S terdiri dari dua proses yang simultan dan terkait, yaitu proses elektrokimia danabsorpsi hidrogen ke dalam baja. Larutan CO2 dalam air pada pH yang sama lebih korosif dari larutan asam kuat,sebab pH hanya merefleksikan konsentrasi ion hidrogen, sedangkan CO2 akan memberikan kuantitas korosi yanglebih besar dari bagiannya yang terdisosiasi.Baja tahan karat austenitik memiliki ketahanan korosi yang lebih baikdibandingkan dengan baja karbon rendah. Selain itu sifat mekanik dari austenitic stainless steel sepertiketangguhannya terhadap retak dan keuletannya juga relatif tinggi sehingga kerentanannya terhadap failure lebihrendah.

The Phased Array Ultrasonic Inner Inspection for the Butt Weld on the Head of High-Pressure Vessel

2018 ◽  
Author(s):  
Cunjian Miao ◽  
Qi He ◽  
Xingji Du ◽  
Weican Guo ◽  
Zhangwei Ling ◽  
...  
Keyword(s):  
High Pressure ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Pressure Vessel ◽  
Phased Array ◽  
Small Diameter ◽  
Ultrasonic Field ◽  
Butt Weld ◽  
High Pressure Vessel ◽  
Detecting Method

The layered high-pressure hydrogen vessels are widely used in hydrogen refueling stations. The head of the high-pressure vessel is made of austenitic stainless steel, and has thick walls, a pipe with a small diameter on the top and a butt-weld structure. It’s difficult to detect effectively, using conventional methods in the inspection of the butt weld on the head. To effectively detect the weld joint, a detecting method was investigated using ultrasonic phased array technique from the inner surface of the small-diameter pipe. By axial focusing and circumferential focusing, the ultrasonic field in austenitic stainless steel could satisfy the specific inspection requirement. Some ultrasonic field analysis and defect detection simulations were carried out with CIVA, for artificial defects such as side-drilled holes. Meanwhile, the test specimen and probe were designed and manufactured, and experiments were conducted. Furthermore, the feasibility and rationality of the detecting method and the simulation method were verified, and the detecting process parameters were determined.

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