[MW:33029] channels and bonnets with six or more tube passes

Dear Group Members,

Please share your opinion/interpretation on API 660 Clause 9.6.9 (a)


 
Tube passes to be considered for individual channel or both channels (if Exchanger is having 2 channels)?
 
in other words:
Individual Channel passes to be considered or cumulative passes for both channels to be considered..?

Regards,
Manohar.

 

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