CII 2013 (Build 121130)

I have a project that I have modeled a digester in with about 60+ nozzles. I modeled all the nozzles on the digester using WRC-297. I now have to check the nozzle forces (at the nozzle/vessel interface) against a spreadsheet of nozzle load maximums with forces at the nozzle face.

Would I be better to:
1. Use the local member forces output and find the face of nozzle flange element and its forces

or

2. Calculate the face of nozzle flange via FBD of the nozzle and assume no element loading.