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Technical Discussions
Ahmad Sawalha
Ahmad Sawalha
02:39 Aug-24-2008
plugging Heat Exchanger tubes

Dear,

how much the permissible percentage of plugging tubes of Heat exchangers, and which reference talks about.

Regards


    
 
 
bob sudharmin
Engineering, Reliability and Integrity Eng
Shell Malaysia Trading, Malaysia, Joined Jan 2008, 54

bob sudharmin

Engineering, Reliability and Integrity Eng
Shell Malaysia Trading,
Malaysia,
Joined Jan 2008
54
07:18 Aug-24-2008
Re: plugging Heat Exchanger tubes
The permissible percentage of plugging/sacrificing tubes of Heat exchangers is somewhere in the region of <30 % before its efficiency drops. I cannot recall about the reference material. Probably you might want to check TEMA (Tubulars Exchanger Manufacturers Association) or even API 660 and API661. Then again, one thing to note is that the 30% is for a single pass.
best regards
bob sudharmin

----------- Start Original Message -----------
: Dear,
: how much the permissible percentage of plugging tubes of Heat exchangers, and which reference talks about.
: Regards
------------ End Original Message ------------




    
 
 
Qaisar
Qaisar
05:22 Aug-25-2008
Re: plugging Heat Exchanger tubes
----------- Start Original Message -----------
: Dear,
: how much the permissible percentage of plugging tubes of Heat exchangers, and which reference talks about.
: Regards
------------ End Original Message ------------

10% tube plugging practice is in place in our plant. It all depends on the feeling/ limit of process engineering people. They should have some graphs corelating no. of plugging tubes and the effeciency.

regards
Qaisar Abbas
Inspection Engineer
Engro Chemical Pakistan limited


    
 
 
adex609 qorie
adex609 qorie
20:02 Jul-04-2009
Re: plugging Heat Exchanger tubes
In Reply to Qaisar at 05:22 Aug-25-2008 .

i just want to share my experienced.
In plant, they plugged tube that has 40%wall loss.

but different with ship, they don't have a clear permissible percentage of wall loss.
maybe coz they are in marine side, not same as oil n gas.

    
 
 

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