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HomeHomeDiscussionsDiscussionsOil Refinery Co...Oil Refinery Co...ASME B 31.3 vs. API 650 - Clarification Reqd.ASME B 31.3 vs. API 650 - Clarification Reqd.
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10/22/2005 10:00 AM
 
User is offline Anonymous
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Joined: 1/8/2011
Posts: 5008
As per ASME B 31.3/ para 304.1.1(a)(Process piping- Presure Design) Minimum Required Thickness (tm) is INCLUSIVE of corrosion allowance with formula (tm = t + c ), where t= pressure design thk. and c = sum of total allowances whereas as per API 650 ( Welded oil storage steel tanks) Minimum Required Thickness (tm) is EXCLUSIVE of corrosion allowance with formula (td = tmin + c.a.), where td= design thk., c.a. = corrosion allowance. A disscussion will be helpful with your valued inputs. regards DM
 
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10/22/2005 10:00 AM
 
User is offline Anonymous
1st Level Poster

Joined: 1/8/2011
Posts: 5008
Debasis I have posted reply for this for the same question- in the same forum- some months back. Please read the same posted separately some months back. Trust this is of help to you C.V.Srinivsan Nishi Engineers Pvt Ltd Indai Oct 22, 2005 E-mail:nishi@vsnl.com >As per ASME B 31.3/ para 304.1.1(a)(Process piping- Presure >Design) Minimum Required Thickness (tm) is INCLUSIVE of >corrosion allowance with formula (tm = t + c ), where t= >pressure design thk. and c = sum of total allowances whereas >as per API 650 ( Welded oil storage steel tanks) Minimum >Required Thickness (tm) is EXCLUSIVE of corrosion allowance >with formula (td = tmin + c.a.), where td= design thk., c.a. >= corrosion allowance. > >A disscussion will be helpful with your valued inputs. >regards >DM
 
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