Nuclear reactor slug provided with thermocouple

Claim 1

IN COMBINATION, A SLUG ASSEMBLY HAVING A BODY OF MATERIAL FISSIONABLE BY NEUTROUS OF THERMAL ENERGY AND A THIN PROTECTIVE COATING DISPOSED ABOUT SAID BODY, SAID SLUG ASSEMBLY BEING PROVIDED WITH A CENTRALLY DISPOSED PASSAGEWAY EXTENDING THEREIN, AND A THERMOCOUPLE UNIT COMPRISING A FIRST TUBE SEALED AT ONE END CONSTRUCTED OF A MATERIAL OF HIGH THERMAL CONDUCTIVITY AND PROVIDED WITH A FLANGE AT THE OTHER END, SAID TUBE BEING DISPOSED WITHIN THE PASSAGEWAY OF THE BODY WITH THE FLANGE IN PHYSICAL CONTACT WITH THE PROTECTIVE COATING ON THE BODY SEALING THE MATERIAL IN THE BODY FROM THE AMBIENT ATMOSPHERE, A PLUG OF HIGH CONDUCTIVITY METAL PRESS FITTED INTO THE CLOSED END OF THE FIRST TUBE, A SECOND TUBE DISPOSED WITHIN THE FIRST TUBE HAVING A PORTION EXTENDING PORTION, AND A THERMOCOUPLE HAVING A JUNCTION THERMALLY AND MECHANICALLY BONDED TO SAID PLUG, THE LEAD WIRES OF SAID THERMOCOUPLE EXTENDING TO THE EXTERIOR OF THE THERMOCOUPLE UNIT THROUGH SAID SECOND TUBE AND ORIFICE THEREIN, WHEREBY THE SECOND TUBE IS ADAPTED TO CONTACT AN ADJACENT BODY AND PROTECT THE LEAD WIRES FROM MECHANICAL DAMAGE CAUSED BY PRESSURE EXTENDED FROM THE ADJACENT BODY.