Lucas,
WELCOME TO THE AWS WELDING FORUM!!
Since you are on a 30" OD pipe you should have access to the inside, I have crawled as small as 18" and we regularly did 22". As such, if your WPS specifies removal of ceramic backing after welding from the outside and weld back weld from the inside then YES, it would be prequalified. If not removing the ceramic backing, then you must use steel or do a PQR prior to establishing your WPS.
He Is In Control, Have a Great Day, Brent