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PostPosted: Sun Nov 14, 2010 5:09 pm 
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Joined: Thu Oct 28, 2010 11:09 am
Posts: 2
we have a pressure vessel having following specsifications:

Operating Conditions

0.03 kg/sq.cm & 140 degree Centrigrade
Construction
Shell = carbon stell ASTM A516 Gr. 55 thk. 13 mm
cladding= AISI 304L thk. 3 mm
Design Code =ASME Sect. VIII Div. 1

Problem
Due to the reduced thickness of shell cladding , vessel's shell courses was replaced with 16mm full strength SS 304L sheets........But due to time constraints vessel shell pieces was replaced without keeping in view of the original configuration of Shell courses...
So now at this time, the vessel is composed of many different small pieces instead of two shell courses and not a single circumferential joint is in line


Now the Question is on the Intergrity of this vessel due to increased no of welded joints in longitudnal & circumferential postions of shell. Please tell with reference to ASME Section VIII or any other international code the effects of additional weld joints on the vessel integrity.

How we can assure the reliabilty & Integrity of pressure vessel in such condition. Please elaborate the response.

For any other information please do not hesitate to write.
Regards


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PostPosted: Mon Nov 15, 2010 2:30 pm 
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Joined: Sun May 20, 2007 3:16 pm
Posts: 141
Location: Jord International-India
With above pressure operating conditions is it falling with ASME code?

Still integrity does not define by ASME code by Number of joints and code is not concern as far as you meet the joint efficiency of each joint.

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Niraj


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