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Hi, As per ASME VIII Div 1, I can't feel the diference between quick actuating closure (UG-35-2) and quick opening closure (UG-35-3. Can someone give me one example for the both. Thank by advance

Dears, I have a pressure vessel 24’’ND with 2 chambers, carbon steel, 3mm corrosion allowance. For the fist chamber, there is body flanges assembly. No problem. But the second is totally separated and we have only one flanged nozzle 10’’ ND. Is it enough for opening inspection or do I need to...

Dear all, I'm wondering which grades of carbon steel are suitable for an MDMT = -52°C for pressure vessel as par ASME VIII Div 1? I assume that I have to follow the UCS68 rules. Is PWHT mandatory ? Impact test value as per UCS68(b) ? What are the other specific requirements, due to...

Dear all, I'm wondering which grades of carbon steel are suitable for an MDMT = -52°C for pressure vessel as par ASME VIII Div 1? I assume that I have to follow the UCS68 rules. Is PWHT mandatory ? Impact test value as per UCS68(b) ? What are the other specific requirements, due to MDMT=-52°C...

We are manufacturing a pressure vessel U stamped and we would like to sub-contract rolling and welding of shell (due to thick vessel wall). Sub-contractor must be certified U stamp also or not ?

Hi everybody, I have pressure vessel with formed head in SA537 cl 2, thickness 60mm (2 23/64 in) which will be hot formed (and manufactured in several parts => welded). What kind of post forming heat treament shall be done as per ASME VIII Div 1 ? Thank by advance

Hi, I would like to get explanation regarding the following. I have a pressure vessel in SA537 Class 2, wall thk = 60mm (2 23/64"), MDMT=-50°C (-58°F). I shall perform impact tests (specific request from client) and I'm wondering what will be the minimum valeur on those tests. According to SA20...

We are purchasing plates in SA516Gr60N with thicknes = 1/3" (8.5mm) and 1" (25mm). I received material certifcats and I'm suprised because : - for plate thk=1" => impact tes at -51°C (-60°F) according to SA20 table A2.15 = no problem - for plate thk = 1/3" (8.5mm) => impact test at -20°C (-4°F)...

Hi everyone, We'll manufacture pressure vessel using SA516 Gr 60N as per ASME VIII Div 1 with requested MDMT = -40°F. According to UCS66, impact tests are required as per UG84. My question is, the impact test required by UCS 66 shall be done at -40°F (MDMT) or as per temperature required by...