Little story, not directly related to small chips in carbon shafts, but still close enough to warrant consideration...
I was shooting CX Heritage 150's in the back yard one day. Had been shooting a while and decided to mix it up a bit. I sat a block style target on a plastic picnic table and started shooting at it from about 50 yards away. After one or two shots the inevitable happened and I missed. The arrow was low, and hit the lip of the picnic table, penetrating up to the fletching.
I looked it over and carefully pulled the arrow out. There was no cracking noise when I pulled it out, nor could I hear or see anything when I flexed it. Figured I got lucky. I did.
I got lucky in that when the shaft exploded on the next shot, the back half hit my bow arm bicep sideways instead of blowing clear through it. It hurt bad enough that I thought I HAD shot through my arm, and wasn't convinced till I rolled my shirt sleeve up and looked.
As most of you know, CX Heritage shafts have an outer layer they call "Buff Tuff". That outer layer prevented me from seeing that the inner shaft was damaged. This is not a slam on CX. I still shoot CX arrows, but I will not shoot any shaft, of any material, that I have ANY doubt about whatsoever!
Better safe than sorry! Arrows can be expensive, but like someone said earlier, the ER bill is more expensive!!!