Permissible Bore in B16.47 Blind Flange

[marty007]

Hello,

This question is with regards to the reinforcement calculation requirements when using a B16.47 blind flange with a centrally located nozzle.

For B16.5 blind flanges, using interpretation VIII-1-01-105, reinforcement calculations are not required as long as the opening is no larger than that listed in B16.5 Table 6.

I have taken a look through B16.47, but couldn't find an equivalent table. Is there any similar exemption size available for B16.47 flanges?

Thanks,
Marty

 

[marty007]

Hey,

I'm still trying to find an answer to this question, does anyone have any thoughts?

Thanks,
Marty

 

[SnTMan]

marty007, I have just flipped thru my (admittedly older) copy, I do not see any such provisions. Most likely will be a custom design. This type design has been discussed previously. See, for example, thread794-338767

Regards,

Mike

 

[marty007]

Mike,

That was my fall-back approach. I was just wondering if I could get by without having to do an App 2 calc.

Thanks!
Marty