As per Cl. 5.5.6.1.d of ASME Sec. VIII Div 2,
"The allowable limit on the primary plus secondary stress range, Sps, is computed as the larger of the quantities shown below.
1) Three times the average of the S values for the material at the HIGHEST & LOWEST temperatures during the operational...
Hi,
I am referring to ASME Sec VIII Div 2 Ed 2007 Add 2008
I calculate the safe pressre thickness of cylindrical shell by clause 4.3.1 t=D/2(exp(P/SE)-1)
Now I go to Cl 4.3.10.2 to calculate the stress under combined loading. I take only pressure load . (No moment, force, weight etc.)
I am...
We have designed exchanger with Div-2 Ed 2004 with ASME CODE STAMP requirement. Since Div-2 does not give Tubesheet thickness calculations, we had performed calculations with Div-1 UHX which is conservative approach. But the PE is insisting to do FEA becuase Div-2 does not allow anywhere to use...
We have designed exchanger with Div-2 Ed 2004 with ASME code stamp requirement. Since Div-2 does not give Tubesheet thickness calculations, we had performed calculations with Div-1 UHX which is conservative approach. But the PE is insisting to do FEA becuase Div-2 does not allow anywhere to use...
1)
Refer Following Clause from Div-2
""5.E.6.1 a) General Primary Membrane EQUIVALENT STRESS (Pm) – evaluate the through thickness stress distribution
from the numerical analysis of the equivalent plate for mechanical plus pressure loading. The membrane stress is determined by linearization of...
I am referring to Cl. 4.3.10.1(b) of ASME SEC VIII Div 2 Ed. 2007 which mentions terminology "Major structural discontinuity"
I would like to know,
1) What is the definition for the term "Major structural discontinuity", and
2) Is nozzle in a shell can be called as "Major structural...
We are frequently facing this situation. The Vessel as per Div.1. Since some part of it was not possible to Design By Rules we carry out stress analysis by Div-2. We linearise Von Misses stress and compare it with allowable from table 5A (Von Misses allowable).
However customer/third party...
I am confused with this clause. Please help me out.
In Cl. 5.3.2 of new ASME SEC. VIII Div 2 (2007), for 'Protection against local failure' it is stated that
"Following Elastic analysis criterion shall be satisfied for each POINT in the component. The sum of the local primary membrane plus...
A pressure vessel (ID 710mm,THK 8mm,tangent length 1290 mm) with torispherical ends is having (1) one CS (full penetrated, single V, 3mm root gap, without back strip) welded from inside, (2) one LS (full penetrated, single V, 3mm root gap, without back strip) welded from inside and (3) one CS...
Hi,
I am regular user of PC.I have written one file in Microsoft Excel(Which gives daily time-table).I want to open this file automatically when i start and shut off the system (e.g. login box opens automatically while starting the system).Could anybody please explain me,what changes should i do...
Hi....
1)What is the basic difference between relief hole & tell-tale hole?
2)Compensation pads are provided with tell-tale holes & not with relief holes.Is it right? Please describe.
3)What is the recommended size of tell-tale hole?
Please let me know about useful information available on the...
Hi..
I am reviewing one pressure vessel design.Vessel is having two flat heads.Two slip on flanges are welded to shell.And flat heads are bolted to these flanges without gasket.Material of head and flange is same.
If head of thickness t is safe for this application,can i conclude directly that...
