Dear fellow designers,

I would like to know whether PVElite computes calculations for cluster of nozzles at the dish head or otherwise.

My case:
-I have a cluster of 3 nozzles of my vessel head (2:1 SE head).
-2" in size for all 3 nozzles.
-No reinforcement required for each of the nozzle during individual analysis.
-nozzle distance (center-line to center-line) is 140mm apart.
-nozzles are in a straight line
-UG-36 (c)(3)(d) (ASME 2010) states that: "no two unreinforced openings, in a cluster of three or more unreinforced openings........... for doubly curved shells and formed or flat heads, 2.5(d1+d2)

I have tested out PVElite for 2(two) openings, and I know PVElite does check for clashes and minimum distance between 2(two) openings.

It does not, however, check for 3(three) nozzles as per UG-36 (c)(3)(d).

Can anymore please advice on this? Whether my finding is true or otherwise?

Any help would be very much appreciated.

Best Regards)

Han
(Legendary Engineer in the making)