Hi,
For the API-650 Tank diameter less than 36m ( dia.3m or even less) ,will the Nomogram check method be applicable for the Nozzle load check?

As per API-650, Annex P.1 shall be used (unless specified otherwise by the Purchaser on Line 29 of the Data Sheet) for tanks larger than 36 m (120 ft) in diameter, and only when specified by the Purchaser for tanks 36 m (120 ft) in diameter and smaller.

& W.2(5)says,Unless specified otherwise by the Purchaser, whenever the tank diameter exceeds 36 m (120 ft), shell stiffness coefficients, maximum unrestrained radial deflection, angle of rotation of bottom course shell nozzles, and the nomographs for moments and forces that these nozzles can safely sustain from connected piping shall be provided in accordance with provisions of Annex P. Alternate analysis techniques, such as the finite element method, may also be used to satisfy this requirement.

Experts ,kindly reply
Rg, MVS