SCweld, this first pic is by a newbie that just passed/graduated his course at the local Tech school. (So I'm told) We are rewelding many of the rejectable welds in this mechanical room now. IMO the newbie was thrown to the wolves as there are many very difficult welds in this basement. Not a great place to cut your teeth. Just let them know that they should stay humble as they leave the training/test shop.
The second weld is from some existing pipe from a few decades ago. 2G 6010 lace weld and looks like they rewelded a plug that was cut out by mistake and a stab in on a 1" line. Not the best I've seen but not too bad either. Just saw them the other day and thought it worth sharing w/students.
BTW-the first pic shows a fit that is not legal per specs as it should be a forged fitting or a tee, not a pipe to pipe stab in.