E-23a Equation 1

[COSTASTSAPROUNIS]

In the past the E-23a inequality was like this
*****<196 HDG
Now in addendunm 4 is
*****<1.96 HDGe
what is the correct expression
Please if anybody knows , help me
Thank you in advance
Costas Tsaprounis

 

[JStephen]

The limitation should be based on the annular plate width being limited to 3.5% of the tank diameter. Check which of the two cases corresponds to that. Being off by a factor of 100 should give you more weight than the total tank contents.

 

[sdz]

Compare it to AWWA D100-05 which gives wL<=201.1HDG. (Eq 13-37 metric)
This shows that wL <=196HDG is the correct one in API650.