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Title: HIGH-TEMPERATURE MATERIALS AND REACTOR COMPONENT DEVELOPMENT PROGRAMS. VOLUME III. REACTOR COMPONENT DEVELOPMENT. Second Annual Report

Abstract

Development programs reported include those concerning circulating ball reactivity control with capability of operating around sharp bends; static switching utilizing solid-state devices; capacitance temperature sensor based on the change in dielectric constant of alumina or beryllia versus temperature change; high-temperature extension of conventional nuclear sensors (fission counters and d-c ionization chambers); development of nuclear sensors for monitoring and controlling high-temperature, highperformance reactors; high- temperature fasteners involving stress relaxation of Inconel bolts and nuts up to 600 deg C; fasteners for remote maintenance; Monte Carlo program for nuclear analysis of complex reactor and shield systems. Significant results achieved on these programs are summarized. A scram actuator employing three electromagnetic units, a straight guide tube, and a segmented rod capable of operating around bends demonstrated scram performance competitive with spring scram actuators. A five-channel safety scram bus occupying a volume 5 x 6 x 3.5in. was tripped 90,000 times in a period of 770 hours without a failure or sign of circuit deterioration. The determination of temperature by sensing the change in dielectric constant of ceramic materials was established as a method capable of good sensitivity and resolution by testing up to 3000 deg F. The feasibility of using a charged fragmentmore » detector without external power being applied to the detector to detect thermal neutrons was demonstrated. The problems associated with the use of Inconel X screw type fasteners at temperatures up to 1100 deg F were defined but not resolved. (auth)« less

Publication Date:
Research Org.:
General Electric Co. Flight Propulsion Lab. Dept., Cincinnati
OSTI Identifier:
4740633
Report Number(s):
GEMP-177c
NSA Number:
NSA-17-017411
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; ALUMINUM ALLOYS; CERAMICS; CHROMIUM ALLOYS; CIRCUITS; CONTROL; CONTROL SYSTEMS; DIELECTRICS; DIFFERENTIAL EQUATIONS; ELECTRONIC EQUIPMENT; FAILURES; FISSION CHAMBERS; FLUID FLOW; HIGH TEMPERATURE; INCONEL ALLOYS; INSTRUMENTS; IONIZATION CHAMBERS; MACHINE PARTS; MONITORING; MONTE CARLO METHOD; MOTION; MOTORS; NEUTRON DETECTION; NEUTRONS; NICKEL ALLOYS; NIOBIUM ALLOYS; POWER PLANTS; REACTOR CORE; REACTOR SAFETY; REACTORS; SEMICONDUCTORS; SHIELDING; SHUTDOWN; SPHERES; STRESSES; THERMAL NEUTRONS; THERMOMETERS; TITANIUM ALLOYS; VARIATIONS

Citation Formats

. HIGH-TEMPERATURE MATERIALS AND REACTOR COMPONENT DEVELOPMENT PROGRAMS. VOLUME III. REACTOR COMPONENT DEVELOPMENT. Second Annual Report. United States: N. p., 1963. Web. doi:10.2172/4740633.
. HIGH-TEMPERATURE MATERIALS AND REACTOR COMPONENT DEVELOPMENT PROGRAMS. VOLUME III. REACTOR COMPONENT DEVELOPMENT. Second Annual Report. United States. https://doi.org/10.2172/4740633
. 1963. "HIGH-TEMPERATURE MATERIALS AND REACTOR COMPONENT DEVELOPMENT PROGRAMS. VOLUME III. REACTOR COMPONENT DEVELOPMENT. Second Annual Report". United States. https://doi.org/10.2172/4740633. https://www.osti.gov/servlets/purl/4740633.
@article{osti_4740633,
title = {HIGH-TEMPERATURE MATERIALS AND REACTOR COMPONENT DEVELOPMENT PROGRAMS. VOLUME III. REACTOR COMPONENT DEVELOPMENT. Second Annual Report},
author = {},
abstractNote = {Development programs reported include those concerning circulating ball reactivity control with capability of operating around sharp bends; static switching utilizing solid-state devices; capacitance temperature sensor based on the change in dielectric constant of alumina or beryllia versus temperature change; high-temperature extension of conventional nuclear sensors (fission counters and d-c ionization chambers); development of nuclear sensors for monitoring and controlling high-temperature, highperformance reactors; high- temperature fasteners involving stress relaxation of Inconel bolts and nuts up to 600 deg C; fasteners for remote maintenance; Monte Carlo program for nuclear analysis of complex reactor and shield systems. Significant results achieved on these programs are summarized. A scram actuator employing three electromagnetic units, a straight guide tube, and a segmented rod capable of operating around bends demonstrated scram performance competitive with spring scram actuators. A five-channel safety scram bus occupying a volume 5 x 6 x 3.5in. was tripped 90,000 times in a period of 770 hours without a failure or sign of circuit deterioration. The determination of temperature by sensing the change in dielectric constant of ceramic materials was established as a method capable of good sensitivity and resolution by testing up to 3000 deg F. The feasibility of using a charged fragment detector without external power being applied to the detector to detect thermal neutrons was demonstrated. The problems associated with the use of Inconel X screw type fasteners at temperatures up to 1100 deg F were defined but not resolved. (auth)},
doi = {10.2172/4740633},
url = {https://www.osti.gov/biblio/4740633}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1963},
month = {2}
}