Hi mtam! First off,
"WELDCOME TO THE WORLD'S GREATEST WELDING FORUM!!! :) :) :)"Now, this is a generalized answer, yet it pretty much addresses the issue you are describing...
One would then refer to the amount of allowable weld face reinforcement within the governing welding and construction code/standard as well as what is acceptable within the contract specifications and if necessary, clarification from the EOR (Engineer Of Record) in order to make the appropriate decision as to passing, or failing the weld as well as whether or not a complete removal or just a grinding down of the "grapes" is an adequate repair to this condition you're describing. ;)
There are other actions that some other folks in here may suggest to take from an inspectors perspective and there are quite a few to read from which I'm sure you will when they decide to chime in here... One of them would be to cover your behind by writing a Non-Conformance Report (NCR) if you must sign off on the weld, and do not agree to pass the weld and this way regardless of who overrules you, if something happens (God Forbid!) later and the weld does indeed fail, or something else fail as a result of leaving all of that
excessive reinforcement (standard AWS term for "Grapes" ;) ) on the weld zone, then the blame cannot be directed to you!!!
Respectfully,
Henry