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Hello Can you help me to find requirements for u-bends pdht in heat exchangers acc to ASME VIII div 1 ? I have tubes with o.d. 25 x 2,6 mm and radius 37,5 mm. Material is P265GH acc to European Norm. I found some information in this ASME, but I lost it. Thanks in advance Michal

Hello I was by this exchanger and I checked gaskets. All gaskets are with outside steel rings. I assume, that gaskets are spiral wound, and this "R9" is roughness description. Thanks for all advises Michal

Thank you for your answers. In this week I will see the nozzles in practice. I hope it confirm my think that nozzles are raised face Regards

Hi I am preparing a heat exchanger documentation for new exchanger based on old documentation. The heat exchanger is in Poland, and the old documentation is from Italy. In nozles table I have flanges description: 4" 150# WN-RF-R9-sch.40 and 3" 150# WN-RF-R9-sch.40. Do you know what R9 can mean...

Thank you very much. Yes it is simple, I use the ASME codes very seldom and it is my explanation. For fR I tried values from 1 to 1100 and was without influence on result in %. Now I can calculate correct fR Thanks again !!

Hello All I prepare a floatong head heat exchanger calculatiobn acc to ASME VIII part UHX-14 with Visual Vessel Design program In tubesheet calculation I have a position: "correction factor to account for radial differential thermal expansion fT" Do you know what value should be written ? I can...

Thank you for answers Now I have confirmation, what to do :)

Hi It is possible, that I will make design of horizontal pressure vessel with boot for potassium hydroxide (KOH), hydrofluoric acid (HF), hydrocarbons. It is a reconstruction design, old tank has more than 40 years. The tank is made from SA-515 gr 70, and had a post weld heat treatment. Do you...

This material is used for tank manufacturing in Polish refinery, his number if I remember is 1.4571 My question for certificates is without answer Thank for answers

Thanks for advices. I am waiting for inspection certificate for these materials. When I receive it, I will be 100% sure that these materials are present on market. Thanks all

Hello All I have in data sheet for storage tank acc. to API 650 a flanges forgings with SA182-316Ti material Flanges acc. to ASME B16.5 I can't find this material in ASME SA182 standard Is it a "shortcut" or I have old version of this standard ? What is full name of this material ? I dont have...

Thanks all for answers I am not an expert in API650 therefore this question Regards

minus 25 deg Celsius

Hello I have storage tank made from SA516 gr 60 material. Tank covered by API 650. Please look at my inerpretation of impact testing energy value. It is important for me. API 650 twelfth ed. 2013 SA516-60 in table 4.4b -> material group III or IIIA Table 4.5a -> min value 20J Thanks in...

I have checked, yes, design code for cone bottom isn't API but EN 1993-4-1 (in data sheet). This code was changed to API650 / ASME VIII div. 1. Now all parts of tank are acc. to American Codes - it was reason of change. Shell and roof is acc. to API 650 This tank will stand on foundation slab...

I wasn't precise. Cone bottom is like for silos - with 30 degree angle from vertical axis (see attachment) http://files.engineering.com/getfile.aspx?folder=bf9a42a5-08b7-499f-8803-7b34f66e2c9c&file=tank.pdf Thanks all for...

I took NDE requirements from tank shell, from API 650

Hello All I am preparing non destructive examination scope for tank designed acc to API 650 with bottom cone. I can't find NDE requiremnents for bottom cone in API 650 and ASME V. Maybe I didn't see it. Do you know where it could be found ? Thanks in advance

Thanks for replies Conext is: strength calculation for pressure vessel or pipeline flanges (acc to EN 1092-1). Calculation acc. to EN 13445-3 by Visual Vessel Design ver 10.0. There is material properties depending on forging THICKNEES - see sketch. When I am choosing a flange for calculation...

Thank for links, but unfortunately I can't find answer Michael