Approximately 200 stainless steel sheathed, insulated junction,thermocouples will be used to monitor temperatures on the pump test section, on heat exchangers, in air systems, and for loop heater control. The thermocouples will be connected to the reference junctions at the control cabinets by doable shielded extension lead wire, with the shield being grounded at the thermocouple end only. Temperatures will be read out on available multipoint strip chart recorders and indicating controllers. The more important temperatures will also be read out on the DEXTIE data logging system, and on an existing 100 cycle per second oscillographic recording system.