An upstream coolant header 22 in {TAIL ~ association} with the reactant header 18 directs coolant to {HEAD ~ the reactor} 
An upstream coolant header 22 in { TAIL ~ association } with the reactant header 18 directs coolant to { HEAD ~ the reactor }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD