{HEAD ~ Each fuel rod} is identified during its travel and positioned according to {TAIL ~ an identifying code} carried on its lower end plug which designates the fuel enrichment and additive level of the rod 
is positioned according to
{ HEAD ~ Each fuel rod } is identified during its travel and positioned according to { TAIL ~ an identifying code } carried on its lower end plug which designates the fuel enrichment and additive level of the rod
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH