Inconel-sheathed chromel-alumel thermocouples were brazed to Inconel plugs and seal collars for temperature measurements in D1G reactor instrumentation. The two brazing alloys used were 82% Au-18% Ni wire and 19% Cr, 10% Si, 4% Fe, 1% Mn, and 66% Ni powder. Brazing was done by heating in a quanrtz system in which both vacuum and argon were used for protection. No significant variation in post-braze thermocouple response was observed with either of the brazing alloys. Mass spectrometer leak testing at 2500 psi indicated no leaks in any of the brazed joints. Bend tests showed no flaking or cracking. (M.C.G.)