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Title: REACTOR INSTRUMENTATION AND CONTROL PROGRESS REPORT NO. 77

Abstract

CIRCULATlNG-BALL REACTIVITY CONTROL. Wafertype, and copper-sleeved drive rods were tested in a modified electromagnetic unit having wide-faced pole pieces and coils. A preliminary shim-scram actuator driven by electromagnetic units, with a hydraulic shim-rate limiter in the withdrawal direction, was assembled and operated to demonstrate feasibility, and to aid in the design of a prototype actuator. STATIC SWITCHING. The control circuit for the linear induction-motor was modified for operation into a 3-phase 4-wire wye-connected linear induction-motor. The basic scram circuit was modified to work with the control circuit to provide a combination shim and scram control. CAPACITANCE TEMPERATURE SENSOR. Work was performed on the exploration of maximum operating temper. atures of alumina and beryllia, the fabrication and initial testing of a molybdenum-beryllia shielded-probe assembly, development of a transistorized transmission system, and the investigation of sensor-cable length effects. HIGHTEMPERATURE EXTENSION OF CONVENTIONAL NUCLEAR SENSORS. Testing of fission counters and fissioncounter components to 1500 deg F, d-c ionization chambers to 1000 deg F, and ionization chamber components to 1200 deg F was continued. DEVELOPMENT OF NUCLEAR SENSORS. Several high-temperature gridded a-c ionization chambers were built and tested. A cylindrical gridded chamber was designed and built for operation at low temperatures. The design ofmore » a 1000 deg F cylindrical chamber was completed. A charged-fragment neutron detector containing a grid structure for capturing emitted secondary electrons was constructed. A charged- fragment detector was designed with a gold plating on the boron-10-coated cathode to absorb the emitted alpha particles. (B.O.G.)« less

Publication Date:
Research Org.:
General Electric Co. Advanced Technology Services, Cincinnati
OSTI Identifier:
4711771
Report Number(s):
GEMP-77
NSA Number:
NSA-17-029712
DOE Contract Number:  
AT(40-1)-2847
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-63
Country of Publication:
United States
Language:
English
Subject:
REACTOR TECHNOLOGY; ABSORPTION; ALPHA PARTICLES; ALUMINUM; BERYLLIUM; BERYLLIUM ALLOYS; BORON 10; CAPTURE; CATHODES; CIRCUITS; COATING; CONTROL ELEMENTS; CONTROL SYSTEMS; CYLINDERS; ELECTROMAGNETIC FIELDS; ELECTRONIC EQUIPMENT; ELECTRONS; EMISSION; FISSION CHAMBERS; FISSION PRODUCTS; GOLD; HIGH TEMPERATURE; IONIZATION CHAMBERS; MOLYBDENUM ALLOYS; NEUTRON DETECTION; OPERATION; PLANNING; PRODUCTION; RADIATION DETECTORS; REACTIVITY; RODS; SEMICONDUCTORS; SENSITIVITY; SHUTDOWN; TEMPERATURE; TESTING

Citation Formats

. REACTOR INSTRUMENTATION AND CONTROL PROGRESS REPORT NO. 77. United States: N. p., 1963. Web.
. REACTOR INSTRUMENTATION AND CONTROL PROGRESS REPORT NO. 77. United States.
. 1963. "REACTOR INSTRUMENTATION AND CONTROL PROGRESS REPORT NO. 77". United States.
@article{osti_4711771,
title = {REACTOR INSTRUMENTATION AND CONTROL PROGRESS REPORT NO. 77},
author = {},
abstractNote = {CIRCULATlNG-BALL REACTIVITY CONTROL. Wafertype, and copper-sleeved drive rods were tested in a modified electromagnetic unit having wide-faced pole pieces and coils. A preliminary shim-scram actuator driven by electromagnetic units, with a hydraulic shim-rate limiter in the withdrawal direction, was assembled and operated to demonstrate feasibility, and to aid in the design of a prototype actuator. STATIC SWITCHING. The control circuit for the linear induction-motor was modified for operation into a 3-phase 4-wire wye-connected linear induction-motor. The basic scram circuit was modified to work with the control circuit to provide a combination shim and scram control. CAPACITANCE TEMPERATURE SENSOR. Work was performed on the exploration of maximum operating temper. atures of alumina and beryllia, the fabrication and initial testing of a molybdenum-beryllia shielded-probe assembly, development of a transistorized transmission system, and the investigation of sensor-cable length effects. HIGHTEMPERATURE EXTENSION OF CONVENTIONAL NUCLEAR SENSORS. Testing of fission counters and fissioncounter components to 1500 deg F, d-c ionization chambers to 1000 deg F, and ionization chamber components to 1200 deg F was continued. DEVELOPMENT OF NUCLEAR SENSORS. Several high-temperature gridded a-c ionization chambers were built and tested. A cylindrical gridded chamber was designed and built for operation at low temperatures. The design of a 1000 deg F cylindrical chamber was completed. A charged-fragment neutron detector containing a grid structure for capturing emitted secondary electrons was constructed. A charged- fragment detector was designed with a gold plating on the boron-10-coated cathode to absorb the emitted alpha particles. (B.O.G.)},
doi = {},
url = {https://www.osti.gov/biblio/4711771}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1963},
month = {5}
}

Technical Report:
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