Are basic AWS weld symbols on a production released drawing a ISO 9001 :2015 requirement ? Please advise.
The short answer is "no".
However ,...
1- Is your organization design responsible ?(i.e. are you actually creating the drawings and wanting to know if the AWS symbols need applied?)
If so...
2- There are governing statements in ISO 9001:2015, which REQUIRE your organization to
a) "...determine the requirement essential..." (8.3.3)
b) "...apply controls to the design...to ensure that: the results to be achieved are defined" (8.3.4)
Etc....
Also, I would council not to simply "do" something because the standard requires or not. What does your organization, your supply chain, your customer need? Do what's right.
Hope this helps.
Be well.