Maximum/minimum asymmetric rod detection
Description
This patent describes a system for determining the relative position of each control rod within a control rod group in a nuclear reactor. The control rod group having at least three control rods therein. It comprises: means for producing a signal representative of a position of each control rod within the control rod group in the nuclear reactor; means for establishing a signal representative of the highest position of a control rod in the control rod group in the nuclear reactor; means for establishing a signal representative of the lowest position of a control rod in the control rod group in the nuclear reactor; means for determining a difference between the signal representative of the position of the highest control rod and the signal representative of the position of the lowest control rod; means for establishing a predetermined limit for the difference between the signal representative of the position of the highest control rod and the signal representative of the position of the lowest control rod; and means for comparing the difference between the signals with the predetermined limit. The comparing means producing an output signal when the difference between the signals exceeds the predetermined limit
Availability note (English)
Patent and Trademark Office, Box 9, Washington, DC 20232 (USA).Additional details
Publishing Information
- Imprint Pagination
- vp.
- IPC:
- Int. Cl. G21C 7/36.
- IPC
- Int. Cl. G21C 7/36.
- Patent number
- US patent document 4,965,040/A/
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22023234
- Subject category
- S22: GENERAL STUDIES OF NUCLEAR REACTORS; S22: GENERAL STUDIES OF NUCLEAR REACTORS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- CONTROL ROD DRIVES; POWER REACTORS; REACTOR CONTROL SYSTEMS
- Descriptors DEC
- CONTROL SYSTEMS; REACTOR COMPONENTS; REACTORS