Old topic, but i would like to have your opinions

(We) used to send out a nozzle load matrix for all vessel manufacturers to comply with when ordering vessels.
IE, your nozzles will accept such loads as: fx fy fz mx my mz blah blah blah.

I've never liked this as:
1.we are telling the vendor what to do.
2.Cost implications are huge.
3.Stress dept never gets to see the vessel drawings before its ordered!

I'm more in favour of the vendor telling us what the nozzles can withstand and reviewing results to see if this is acceptable. in particular, ensuring that the nozzle for the emergency relief device is strong enough. I feel that nozzles should only be reinforced if there is a particular requirement.

So, what happens at your companies?? i will be intrested to know