Development of fuel failure detection system for a high temperature gas cooled reactor. III

As the first fast reactor of China, the safety of China Experimental Fast Reactor (CEFR) is extremely important, and will decide the future of Chinese fast reactor project. The fuel failure detection system of CEFR provides surveillance and protection for the first barrier-fuel cladding of CEFR, so it is one of the most important systems for the safety of CEFR. As tag gas method is an important method for fuel-failure location in fast reactor, CEFR has a medium-term and long-term plan of using this method to locating failed fuel assemblies. This paper introduces the main principle of tag gas method, summarizes the application of this method, and compares the advantages and disadvantages of each fuel failure location method. Combining the design characteristics of CEFR, this work analyzes the selection principle of tag gas isotopes and the effects on heat transfer capability of fuel element while tag gas filled in. Meanwhile, according to the detection ability of mass spectrometer and the foreign advanced utilization experiences of tag gas method, some suggestions are provided.

Download Full-text

97/04694 Fuel-failure detection system for Pakistan research reactor-1

Fuel and Energy Abstracts ◽

10.1016/s0140-6701(97)81975-3 ◽

1997 ◽

Vol 38 (6) ◽

pp. 406

Keyword(s):

Research Reactor ◽

Detection System ◽

Failure Detection ◽

Fuel Failure

Download Full-text

High Temperature Gas-cooled Reactor fuel failure model and its issue

The Proceedings of the National Symposium on Power and Energy Systems ◽

10.1299/jsmepes.2019.24.b225 ◽

2019 ◽

Vol 2019.24 (0) ◽

pp. B225

Author(s):

Kazuhiro SAWA

Keyword(s):

High Temperature ◽

Reactor Fuel ◽

Failure Model ◽

Fuel Failure ◽

High Temperature Gas

Download Full-text

Fuel-failure detection system for Pakistan research reactor-1

Annals of Nuclear Energy ◽

10.1016/s0306-4549(96)00098-9 ◽

1997 ◽

Vol 24 (15) ◽

pp. 1213-1222 ◽

Cited By ~ 3

Author(s):

S.K. Ayazuddin ◽

Tariq Hayat ◽

A.A. Qureshi ◽

H.A. Khan

Keyword(s):

Research Reactor ◽

Detection System ◽

Failure Detection ◽

Fuel Failure

Download Full-text

Performance of Fuel Failure Detection System for Coated Particle Fuels

IEEE Transactions on Nuclear Science ◽

10.1109/tns.1985.4333576 ◽

1985 ◽

Vol 32 (2) ◽

pp. 1209-1213-a ◽

Cited By ~ 3

Author(s):

H. Terada ◽

N. Wakayama ◽

H. Ohkawa ◽

H. Ohtsu ◽

H. Yoshida

Keyword(s):

Detection System ◽

Failure Detection ◽

Coated Particle ◽

Fuel Failure

Download Full-text

An Environmental Wet Cell For High Voltage Electron Microscopy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100070539 ◽

1973 ◽

Vol 31 ◽

pp. 18-19

Author(s):

N.J. Tighe ◽

H.M. Flower ◽

P.R. Swann

Keyword(s):

Electron Microscopy ◽

High Temperature ◽

Image Quality ◽

Inelastic Scattering ◽

High Voltage ◽

High Voltage Electron Microscopy ◽

Voltage Electron ◽

Environmental Cell ◽

Water Saturated ◽

High Temperature Gas

A differentially pumped environmental cell has been developed for use in the AEI EM7 million volt microscope. In the initial version the column of gas traversed by the beam was 5.5mm. This permited inclusion of a tilting hot stage in the cell for investigating high temperature gas-specimen reactions. In order to examine specimens in the wet state it was found that a pressure of approximately 400 torr of water saturated helium was needed around the specimen to prevent dehydration. Inelastic scattering by the water resulted in a sharp loss of image quality. Therefore a modified cell with an ‘airgap’ of only 1.5mm has been constructed. The shorter electron path through the gas permits examination of specimens at the necessary pressure of moist helium; the specimen can still be tilted about the side entry rod axis by ±7°C to obtain stereopairs.

Download Full-text