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