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Hello all, I've got to quote the fabrication of a pressure vessel with a HALAR ECTFE coating. According to coating manufacturer/installator, this coating is cured at 800°F. I've read UG-99(k)(1) and (2) and I understand I can request an exemption (from the client) to perform an hydrotest...

Hello all, I've obtained a CRN (Canadian Registration Number) for a pressure vessel. The design temp is 140°F. we have yet to start fabrication of the vessel. Now the client asks us to change the temperature rating to 180°F. do I need to request a change with the Inspetion Agency (to...

Hello all, I'm the design engineer and working for the manufacturer. I need to follow the decision diagram in CSA B-51 figure 1a to know if a dimple jacket welded on my vessel is to be inspected by the AI or by manufacturer just to be clear : the vessel is NOT a pressure vessel. My question is...

Hello, I'm from a Canadian Manufacturer. We're designing a mixing tank (with vertical agitator) 30 psig (registered pressure vessel with CRN). Is someone familiar with mechanical seals that have a CRN ? is it common ? is it required to have a CRN ? and what are the code/law requirements for...

what is the meaning of W/E, A/S, and E/S on this P&ID

Hello, for a pressure vessel as per ASME BPVC section 8 div1. Are we allowed to electropolish AFTER hydrotest has been done ? regards,

thread794-423427 designer here, trying to obtain a CRN for a vessel with standard Tri-Clamp ferrules (gasket and clamp not included). I have provided calculations for the ferrules as standard nozzles (weld, thickness and reinforcement check). The reviewer requests appendix 24 calcs. I say it's...

Hello, simply put, on 304/316 Stainless steel plates (polished to 32μin or 20μin), does the polishing direction* influence the drainage of water on it? example : for the same slope, one plate is polished in the slope direction, another one at 90°. which on will have the "better" drainage...

***previously posted in the "storage tanks" forum*** Hello all, This is my first post to the forum. We're installing a side entering mixer into our 15 milk silos that we're manufacturing. According to James Y. Oldshue, in his book : FLUID MIXING TECHNOLOGY (see attached scan) "if the impeller...

Hello all, This is my first post to the forum. We're installing a side entering mixer into our 15 milk silos that we're manufacturing. According to James Y. Oldshue, in his book : FLUID MIXING TECHNOLOGY (see attached scan) "if the impeller is rotating clockwise, the mixer must be angled to...