If I remember correctly the EJMA caters for thin bellows and these are specially engineeried items.
ASME/TEMA gives guidelines for thick bellow design.
regards
avadhesh
Only one heat treatment required in this case. As per UCS-79 P-1, G-1 material are exempted upto 40%fibre elongation (subject to conditions). Since in your case thickness is 60mm, you need to carry out one heat treatment.
This heat treatment can be clubbed with final vessel PWHT.
Please note that as mentioned in previous responses, the ASME code does not put any restriction of placing Knee bracing on vertical seam. By taking proper NDT, in this case Radiography it is permitted. However as a good enginnering practice care shall be taken to measure increased hardness of...
What about recertification of material (UG-10 of ASME Sec VIII Div1) based on the Latest code edition & Addenda on which design and construction is going on.
Hi MJCronin,
I feel your question addressed to me have been replied by Tom.
In brief I would conclude following. ASME code do not put any restriction to location of opening in dished ends. Properly reinforced opening is acceptable even in crown area.
I do not remember consultant/clients...
aybee,
please note that the clause you referred only tells that if nozzle and reinforcement located in the specified area then thickness of Dished End shall be as per specified guidelines. It does not mention that Nozzles can not be located in knuckle area. The reason being if nozzles are in...
Please note that ASME code do not impose any restriction on the position of opening on dished ends. However, generally the consultant specifications limits that opening and its reinforcemnt shall be in the crown area for both Torrispherical and Ellipsoidal dished ends. Probably the reason being...
I am surprised why a Vacuum Relief Valve is being provided for a ASME designed vessel. As per code the equipment can be designed for External Pressure/Vacuum Ref. Clause UG-28,UG-33. Hence a Vacuum Relief Valve will not be required.
In Tanks the vacuum is generated due to outbreathing and since...
The basic difference between the two is that in Thick wall Raidal stresses are also there in addition to Hoop and longitudinal stresses. Lame's equations are used for determination of various stresses in Thick shell.
Please note that as mentioned above generally thin walled vessels are...
Hi!
Please note that SA181 specification covers non standard Forgings and thats the reason (probably) that it has been removed from ASME B16.5.
As mentioned above by yourself, please refer Annexure-D of ASME B 16.5 which tells that basis of classification in various groups are based on almost...
The one important aspect is ferrite content in SS. There will be some limit fixed by the client for this.
To contol this it will be advisable that the base metal welding shall be carried out first and then clad restoration.
Some margin in base metal thickness also need to be kept say 0.5mm to...
PV Elite is good software for ASME DecVIII Div1 vessels. But for DIV2 and PD5500 it has many limitations. If the simple vessels needs to be designed this in undoubtedly the best as the user interface is very simple.
However due care has to be taken in some of its module i.e. Saddle design for a...
