How to identified the taling lug on the anchor，so we do not need calcuate the local stress in tailing lug and skirt.
We need calculate the taling lug and anchor as a integrity , see the method in 《Pressure_Vessel_Design_Manual》 by Dennis Moss
For the design of skirt and anchor It is necessary to calculate the minimum thickness of skirt as per the Brownell&Young_Process_Equipment_Design_Chapter_10，how APV consider this problem.
We know APV calculate the access hole in skirt for EN13445, but we also want calculate this for code ASME VIII-1，I will be very grateful if you can increase this function.
1. Please submit a service request for this question with your model attached and we can investigate further.
2. There will be no pressure calculations as the skirt is a non-pressure bearing component. Through iteration the thickness is verified if its sufficient. If you look at the vertical vessel report for every section including that of the skirt the internal/external pressure (0 in this case) + weight + wind/seismic etc. are combined and the general primary membrane stress is checked and verified against allowable.
3. We already have this enhancement recorded and we will try to get added to software as soon as we can.
Thanks for your reply，for the 2rd question，we know APV have calculate the skirt thickness for weight+wind/seismic，we also want calculate the skirt thinkness governed by local stress near the anchor according to Brownell&Young_Process_Equipment_Design_Chapter_10.