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Title: DESIGN FEATURES OF CAPSULES FOR HIGH-TEMPERATURE IRRADIATIONS

Abstract

An analysis was made of the problems of control and measuremeat of specimen temperature and heat generation in a NaK-filled capsule containing a fuel specimen. A specific problem is used in this report to demonstrate the large uncertainties normally encountered even in capsules containing thermocouples. This analysis indicates that an improvement by a factor of more than three (i.e., from an uncertainty of plus or minus 7O F to plus or minus 2O F in the example used) may be obtained by use of a differential- thermocouple heatflow meter and by use of a precision thermocoupleplacement clip. Since the irradiation damage suffered by fuel specimens is sensitive to small changes in temperature and burnup, improvements in precision in irradiation testing are of great importance in fuel studies. If the indicated improvement of precision by a factor of three is actually obtained when capsules of this design are irradiated, the experimenter will be able to draw much more reliable conclusions from a given testing program. (auth)

Authors:
; ;
Publication Date:
Research Org.:
Battelle Memorial Inst., Columbus, Ohio
OSTI Identifier:
4282902
Report Number(s):
BMI-1292
NSA Number:
NSA-13-001781
DOE Contract Number:  
W-7405-ENG-92
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
RADIATION EFFECTS ON MATERIALS; BURNUP; CAPSULES; FUELS; HEATING; HIGH TEMPERATURE; IRRADIATION; POTASSIUM ALLOYS; RADIATION EFFECTS; SODIUM ALLOYS; TEMPERATURE; THERMOCOUPLES

Citation Formats

Stang, J.H., Goldthwaite, W.H., and Dunnington, B.W. DESIGN FEATURES OF CAPSULES FOR HIGH-TEMPERATURE IRRADIATIONS. United States: N. p., 1958. Web. doi:10.2172/4282902.
Stang, J.H., Goldthwaite, W.H., & Dunnington, B.W. DESIGN FEATURES OF CAPSULES FOR HIGH-TEMPERATURE IRRADIATIONS. United States. doi:10.2172/4282902.
Stang, J.H., Goldthwaite, W.H., and Dunnington, B.W. Mon . "DESIGN FEATURES OF CAPSULES FOR HIGH-TEMPERATURE IRRADIATIONS". United States. doi:10.2172/4282902. https://www.osti.gov/servlets/purl/4282902.
@article{osti_4282902,
title = {DESIGN FEATURES OF CAPSULES FOR HIGH-TEMPERATURE IRRADIATIONS},
author = {Stang, J.H. and Goldthwaite, W.H. and Dunnington, B.W.},
abstractNote = {An analysis was made of the problems of control and measuremeat of specimen temperature and heat generation in a NaK-filled capsule containing a fuel specimen. A specific problem is used in this report to demonstrate the large uncertainties normally encountered even in capsules containing thermocouples. This analysis indicates that an improvement by a factor of more than three (i.e., from an uncertainty of plus or minus 7O F to plus or minus 2O F in the example used) may be obtained by use of a differential- thermocouple heatflow meter and by use of a precision thermocoupleplacement clip. Since the irradiation damage suffered by fuel specimens is sensitive to small changes in temperature and burnup, improvements in precision in irradiation testing are of great importance in fuel studies. If the indicated improvement of precision by a factor of three is actually obtained when capsules of this design are irradiated, the experimenter will be able to draw much more reliable conclusions from a given testing program. (auth)},
doi = {10.2172/4282902},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1958},
month = {9}
}