Please, I need help in understanding some points of ASTM material specifications.
On ASTM A234, several materials are listed including WP9 Cl.1 and WP Cl.3. Cl.3 has better strength (both UTS and Yeld).
On ASME B31.3 (2012) and ASME II part.D (2004) ASTM A234 is listed but Class/condition is...
Greetings.
We are due to produce a thermal oxidizer treating air with a 3,33g/Nm³ concentration of CH2CL2. After the burner, there will be steamm addition; our customer fears that when the air temperature drops in the range 60-150°C chloridric acid might concentrate.
Our proposed solution is...
Greetings.
I have the request to paint a deodorative, cylindrical thermal oxidizer.
Wall material is iron, surface temperature is extimated to rise up to 200°C. Our standard paint cannot withstand temperatures higher than 150°C; we have an (ugly to see) inorganic zinc paint-coating that can...
Greetings.
My company is going to employ a mono-screw pump to get tallow (animal grease) at about 50°C from a subterranean tank (3 meters below pump level) about 12 meters away from the pump room. Our supplier (Seepex) states that this is possible, and I can believe it. But, we are going to need...
I was comparing the maximum allowable external pressures for a cylinder calculated with italian VSR design code and with ASME ed. 01 add. 02.
The result was amazing: with a 2500 mm Do, and t=10, VSR allows about 0,8 MPa external pressure (The vessel is a jacketed one, with 0,7 MPa in the jacket...
We have a little problem on the ATEX protection on a horizontal dryer.
The dryer is little more of a stainless steel cylinder with an agitator in the middle. There is a jacket for heating, usually at about 60°C.
The dryer will have to dry a powder that is nonconductive and potentially explosive...
Is it possible to place on a formed head outside 0,8*De?
Is there any particular limitation?
Vessel is to be code-stamped as per Section VIII, Division 1..
If it is not possible, in which paragraph of the code is the limitation present? I can't find it, even if my chiefs believe the limitation...
I'm verifying calculations for an ASME vessel vith conical head. On the head there are several, very near nozzles ( they are nearer than double their average diameter).
During calculations I already considered this, using only 5 millimeters of head surface in reinforcement calculation for each...
Good morning to you all.
I'm working on a filter that has to be built according to ASME code. We are from Italy and we are used to PED Code, so we are having a little trouble.
We usually make two set of calculations; one for Design conditions and the other one for Hydraulic test conditions. PED...
(sorry for the poor english, I hope this is understandable)
I've got a problem to determine the minimum thickness of a flat bottom for a Nutsche filter.
The system is composed by an integral flange welded on the vessel body and by a flat bottom bolted on the flange.
The problem is that the...
In the next few years Europe will enforce ATEX 94/9/CE Directive. This directive will enforce explosion protection in each and every aspect of industry and manufacturing.
To make a long story short, ATEX stamped equipment will be needed in every "potentially explosive atmosphere". Conversion...
Hi to you all. I'm new to this forum, so please forgive me if I say nonsenses.
I'm in need of determining the maximum surface temperature of a generic bearing. I'm looking for a formula or something like that that can allow me to have a fair guess of the maximum temperature rise of the bearing...
