Patent ID: 11862350
Assignee: WESTINGHOUSE ELECTRIC COMPANY LLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC G  Y | IPC G

Claim 7:
8. An apparatus for monitoring a position of a control rod disposed in a nuclear reactor vessel disposed in a radioactive environment, the apparatus comprising:
a processor coupled to a memory storing executable instructions, the processor located outside a containment structure;
an analog multiplexer located in a data cabinet mounted on a nuclear reactor vessel head inside the containment structure; and
a communication circuit coupled to the analog multiplexer and the processor;
wherein when executed by the processor the executable instructions cause the processor to:
(a) select a control rod position indicator coil arranged in a coil stack through the analog multiplexer, wherein the coil stack is located proximate to a control rod disposed in the nuclear reactor vessel;
(b) pass an analog signal from the control rod position indicator coil through the analog multiplexer;
(c) receive the analog signal from the analog multiplexer through the communication circuit; and
(d) determine a position of the control rod based on the received analog signal.