Hi Flash,
We did many thousands of welds with "bullets" on the LNG trains in Karratha, carbon, stainless and ITCS with no problems. The pipefitter had to take his isometric drawing (with WPS noted on it) to the store and they signed out the correct round bar. The unused portion was signed back in at end of shift or end of pipe-setup, whichever came first. Every butt had to be visually inspected before the pipewelder left the area so it was quite easy to count the bullets removed from the butt on completion.
Admittedly, most of the work was 100% RT but even on the 5% and 20% lines it would be a very brave (or very stupid) welder who would weld over a bullet if he didn't know whether it was going to be bombed or not.
Regards,
Shane
Flash,
Alternatively, you may request for consumable insert ring for making critical welds, they are placed in the root of the weld joint when the joint is tacked up. The rings are available in different sizes and different analysis to match the pipe composition and size (class 1 to 5). We used GTAW to fuse the ring into the root of the joint for C/S materials.
Regards
Joey