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Thanks for all the input lads. I used the Spirax Sarco website, and together with a colleague we calculated the expected pressure drop through the piping system.

The system I have described is the blowdown from a boiler.

Yes, the 6" pipe is the steam source. There is only 1 elbow on the 6" source, then a reducer to get to 10".

The 6" pipe is connected directly onto the 10" pipe. There is 1 x 6" elbow, 20 metres of 10" pipe and 1 x 10" elbow Thanks Paul

Can anyone point me in the right direction for the following: I have steam in a 6" pipe at a pressure of 64 barg and a temperature of 400 C with a mass flow rate of 100 tons per hour. The 6" pipe is connected to a 10" pipe by means of a reducer and the 10" pipe is open to atmosphere. What...

Thanks for your input gents, the pipe in question is specialist pipe for abrasive substances (Induction hardened UTS 600). I will use a welded support as per your recommendation; the Carpenter Patterson catalogue doesn't state if the pipe saddle is suitable for axial restraint. I will have to...

Can anyone point me in the right direction: I have a 10" pipe and need to design a support stop to resist an axial load of 45981 N. The pipe saddle I intend using is a Carpenter & Patterson Fig 384-2 which consists of two pipe clamps each 50 mm wide fitted around the pipe. How would I calculate...

Why didn't the person in charge have the correct tools for the job? The gasket doesn't seem to cover much of the raised face area at all, and if you are going to bolt up a flat face to a raised face flange then you need an adaptor as the flat face flange could be of more brittle material than...

I've seen failure of gaskets as indicated in the photographs, BUT it has been caused by fitters assembling tight fitting spools together and sliding the faces of the flanges together to align the bolt holes, instead of pushing the spools apart to correctly fit the flange faces. I have seen...

Thanks very much Vzeos.

BigInch 3/16 is approximately 4.7 mm - can you recall where you got that figure from? I can find an EN standard that indicates the mismatch of a circumference and alignment but doesn't mention anything about mismatch of wall thicknesses.

On a project, for economic reasons, we have pipe which has a thinner wall thickness than standard off the shelf fittings. Before anyone says to match the wall thicknesses (in an ideal world) you may want to consider the vast range of pipe wall thicknesses available in the EN standards. Could...

It looks good, but what happens if a group of kids come along and think it will make a good swing?

Proficiency with the relevant standards i.e. ASME B31.3 - Process piping / ASME B31.4 - Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids / ASME B31.8 - Gas Transmission and Distribution Piping Systems. I design piping systems, but would not assume I can design piplines...

What material are you hoping to use? Forbesgroup in the UK are very helpful and will be able to help size GRP / Thermoplastic tanks using BS 4994 / BS EN 12573. http://www.forbesgroup.co.uk/

From TC piping catalogue 2001, page 451 which references ASME B16.11:1966 for carbon steel ASTM A 105 Class 3000 -20 to 38'C (-20 to 100'F) = 206.9 bar (3000 psi)

Europipe I have seen a few of your posts and you seem to be one of the few that deal with European standards. With regard to the sizes (DN600 and DN15), they were the first sizes that popped into my mind at the time. I have done the calculations for reinforcing pads using a spreadsheet I have...

I waqs hoping Europipe would see this post and reply, can anyone tell me how to contact him directly?

I have had a quick look at set-on branches DN15 (WT = 2mm) onto a DN600 (WT = 6.3mm) pipe, but my results don't meet the conditions required by BS EN 13480. The piping system design pressure = 5 bar and design temperature = 100 Deg C. I have tried adjusting wall thicknesses of the pipes but to...

Marcoh Yes the dynamic loads are small compared to dead and wind loads, but I was hoping to get hold of a standard so I could check my work. What calcs would a person use for the duct in question? I have used basic fluid mechanic calcs to determine the forces at the change of direction (i.e...