05-27 Secondary flow control location

Question: 05-27Code Section: 7Date:OBC 2006 Reference:

Question Which is the proper location for the secondary flow control (refer to figures A through D)? 

Interpretation: (On. Reg. 403/97) The figures with the correct location of the secondary flow control are A and B (as per 7.4.4.3.(9)).

As a committee, we would prefer the secondary flow control to be located as per figure B and specifically we recommend it to be located within 5 feet of the interceptor.