Recent content by fastphantom

Thanks again Edstainless - surprisingly the cans show no difference - we are running on starts based maintenance - so based on starts the HGP and CI periods just come around quicker - we are not really seeing anything different here than we have before davefitz - OEM have offered a new and...

another photohttp://files.engineering.com/getfile.aspx?folder=ef779499-dae5-48e3-82e1-a06824de8477&file=DIFFUSER_GUSSET_AND_PLATE_CRACKING_NOV_2017.jpg

Wow, thanks for the quick replies. And I do appreciate all the information offered. Should have been a little more specific in my initial question and given the application - it may change some opinions. The application is the exhaust diffuser on a gas turbine. It is subject to enormous...

Hi I have an application that in normal operation would cycle from ambient to operating temperature - approx 450-500 deg C, and should sit at that temperature for a month or two, come off for maintenance and be turned back on. It could have between 10 and 20 thermal cycles per year. This under...

Hi Can anyone help with the best (most efficient use of steel) plate layout for a 17m diam spherical pressure vessel. Thanks

And to calculate wl - I read the standard (for SI units) to be: the lesser of 14.8HD or 59tb*sqrt(Fby*H). Is this right???

Thanks for the replies JStephen - it makes sense to use the mass of the floor plate in the MF calculation but it is not clear in API650. It states "MF = moment about the shell to bottom joint from the liquid weight". I will very happily use the floor plate mass here. Is this what you are...

In 5.11.2 does the thickness of the bottom plate effect the overturning. I am replacing a 40 year old tank. Due to process conditions the client has requested the tank be built form SAF2205, resulting in 5mm walls and a 6mm floor. The tank is 4.5m diam, overflow Height 6.6m with a cone roof. In...

JOhn Thanks for taking the time to read thru As1692. I agree with your comments and have designed the 165m3 tank to AS1210. It ends up with an 8mm wall thickness which is comparable with the AS1692 selection for the Class4 150m3 tank. So I feel comfortable with that now. Once again thanks for...

Hi I need to replace some existing Sodium Cyanide Tanks. The tanks were previously designed to AS1692 - however when reading that code it states it is only applicable for liquids whose density is not greater than 1000kg/m3 and the max volume for a horizontal tank is 150m3. Now the density of...

Thanks for the feedback brengine - i already have this application set up in excel, which performs a variety of calculations (the list is only a small part of the whole thing) Francis - The list will not have many items. I want to create a stand alone application that can run on a windows pc...

Hi I am trying to create a list that can be added to. Save the list, reveiw the list all with out using a database. Any clues. Thanks

Trying to work out the stress in the shell due to an attachment - like a pipe support or platform, and then if a compensating plate is required. Can anyone help. Thanks.

Thanks Oceania Had a hard time getting copy of standard. Client supply of old pipe, manufacture has since gone out of business. Resolved issue by engaging local contractor who specified joint method, with subsequent hydro. Once again thanks for your information. Fastphantom

Thanks jdarco. From a quick look NBS PS-1569 seems to be for duct work. I will chase pipe supplier for details.