A lot of powerlifting routines do not include any direct biceps work. I don't do any biceps work, I trust the routine I follow. I know my biceps will grow using compound lifts. So no need to think much about biceps.
Johnnie Walker - Keep Walking
"Move me out of the away so that someone else can lift": Ed Coan after injuring himself during a squat attempt of 970 lbs in 2002
POWERLIFTING - ABSOLUTE POWER