Chuck, thank you kindly for the vote of confidence! I was hoping you would catch onto this thread as there's probably not another single Message Board member who knows more about stainless than you! (I am meaning no offense to the others, simply my enormous respect for Mr. Meadows!).
To the enquirer:
My shop policy states no less than 3 layers of weld must be deposited before removal of purge. This is fairly common practice, as I'm sure many would agree.
Your problems are as much with your welds as your management. You KNOW the right thing to do, thats why you are here asking concurrence!
I continue the recommendation, make a test weld using your "standard practice" cut it apart, show it to your boss. It probably won't make any difference but at least you will have some evidence.
If you have any jurisdictional authority; i.e., Inspector, contact them. My best guess is you are either stuck with a stupid boss or you'll need to find another job.
Incidentally, I asked before but, are you an Inspector at this Project? Please state your position. Also, is this work governed by any standards? ASME, API, AWS? Answering these questions will help provide a better answer in response!