The test stand has  a  limited capability for performing thermal transient tests. A  cooling transient in the  salt  circulating through  the pump of  8  to  10°F  per ninute  for  a  20  ninute period can be obtained utilizing maxirrum  salt  system cooling and reducing pump speed to give approximately  l0℅  design flow.A  similar  heating transient can be obtained &iring cperatizi  at  design pump  speed with the  salt  cooling  system off.