IMO, waaaaaaaaay too much volume. How many sets per exercise are you doing? Let's assume 3... ie: You're doing 5 primary tricep exercises on a day when you're also doing chest exercises, almost ALL of which include triceps as well. If you're doing 3 tricep sets per exercise, you're looking at 15 sets of direct tris... as well as an equal amount of hitting tris indirectly. Even if you were only doing an average of 2 sets per exercise, you're still looking at an awful lot.
Same with biceps... You're doin bout 20ish sets a week of biceps, with only a day recovery between 2 bicep workouts.
My bis/tris started growing when I cut them back to about 7 intense sets (8-10 reps) for bis, and 9 for tris. For cutting, I only do 6 sets of each, and neither shrink one bit. If you're trying to put on mass and want to focus on your arms, give them a day on their own, and really lower the amount of sets you do.