Results 101 to 110 of about 218 (131)
Calandria Tube to Tubesheet Roller-Expanded Joint Qualification
Volume 2: Computer Technology, 2006 The complex calandria tube to calandria tubesheet roller-expanded joint in CANDU nuclear reactors is usually qualified by test. In this paper, a state-of-the-art numerical simulation is undertaken in order to improve the understanding of the behaviour of the joint to support design modifications and provide assurance that the test rig envelopes ...
A. S. Banwatt, R. G. Sauve´
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Scoping assessment of design characteristics for an enhanced calandria tube
Nuclear Engineering and Design, 2011 Abstract Over the lifetime of a CANada Deuterium Uranium (CANDU) type reactor, the pressure tubes and calandria tubes undergo creep deformation via static, dynamic and thermal stresses accelerated by neutron bombardment. Creep deformation leads to fuelling issues, potential contact between the calandria tube (CT) and the liquid injection shutdown ...
Glenn D. Harvel +2 more
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Structural and Neutronic Assessment of Calandria Tube Enhancement Design Options
Volume 4: Codes, Standards, Licensing and Regulatory Issues; Student Paper Competition, 2009 Over the lifetime of a CANada Deuterium Uranium (CANDU) Type Reactor, the pressure tubes and calandria tubes deform via creep and sag, eventually requiring replacement. The sagging phenomena leads to fuelling issues, potential contact between the Calandria Tube (CT) and the liquid injection shutdown system or the Pressure Tube (PT).
Richard C. Scrannage +4 more
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Computation and measurement of calandria tube sag in pressurized heavy water reactor
Nuclear Engineering and Design, 2004Calandria tubes and liquid injection shutdown system nozzles in a pressurized heavy water reactor are to sag due to irradiation creep and growth during plant operation. When the sag of calandria tube becomes bigger, the calandria tube possibly comes in contact with liquid injection shutdown system tube crossing beneath the calandria tube.
Tae Ryong Kim, Seok Man Sohn
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Heat Transfer Assessment of Calandria Tube Enhancement Design Options
Volume 4: Codes, Standards, Licensing and Regulatory Issues; Student Paper Competition, 2009 The moderator in the Calandria of a CANada Deuterium Uranium (CANDU) reactor serves as a backup heat sink in a Loss of Coolant Accident (LOCA) combined with a Loss of Emergency Coolant Injection (LOECI) accident scenario. This requires that the heat from the fuel be transferred through the ballooned/sagged Pressure Tube and the contacted Calandria Tube
Daniel M. Hobbs +4 more
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Experimental Techniques, 2017
Coolant channel assembly of PHWRs consisting mainly of pressure tube and calandria tube undergoes sag due to irradiation enhanced creep during its life time. Typical service life of the pressure tube is limited to about 15 full power years due to such ageing related degradation.
S. Chatterjee +2 more
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Coolant channel assembly of PHWRs consisting mainly of pressure tube and calandria tube undergoes sag due to irradiation enhanced creep during its life time. Typical service life of the pressure tube is limited to about 15 full power years due to such ageing related degradation.
S. Chatterjee +2 more
exaly +2 more sources
IEEE Sensors Journal, 2016
Principal components analysis (PCA) involves transforming a set of correlated observations into a set of linearly uncorrelated variables, which can reveal simplified trends in data. Multifrequency eddy current testing contains correlations across different test frequencies.
Thomas W Krause
exaly +2 more sources
Principal components analysis (PCA) involves transforming a set of correlated observations into a set of linearly uncorrelated variables, which can reveal simplified trends in data. Multifrequency eddy current testing contains correlations across different test frequencies.
Thomas W Krause
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Large Passive Pressure Tube Light Water Reactor with Voided Calandria
Nuclear Technology, 1996 A reactor concept has been developed that can survive loss-of-coolant accidents (LOCAs) without scram and without replenishing primary coolant inventory while maintaining safe temperature limits on the fuel and pressure tube. The proposed concept is a pressure tube reactor of similar design to Canada deuterium uranium reactors but differing in three ...
Pavel Hejzlar +2 more
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NDT and E International, 2015
Abstract Procedures employed to non-destructively examine nuclear power plants must undergo inspection qualification to ensure that they meet their respective inspection specification requirements. Modelling is a powerful tool that can be exploited in the inspection qualification process. The gap between pressure tubes (PTs) and calandria tubes (CTs)
Sean Sullivan, Thomas W Krause
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Abstract Procedures employed to non-destructively examine nuclear power plants must undergo inspection qualification to ensure that they meet their respective inspection specification requirements. Modelling is a powerful tool that can be exploited in the inspection qualification process. The gap between pressure tubes (PTs) and calandria tubes (CTs)
Sean Sullivan, Thomas W Krause
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Kerntechnik, 2010
Abstract In advanced water cooled reactors, an annular gap exists between pressure tube and calandria tube. The gap is closed from top but is open from bottom. Due to differential temperature between pressure tube and calandria tube, air flow is induced by natural convection.
A Borgohain +2 more
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Abstract In advanced water cooled reactors, an annular gap exists between pressure tube and calandria tube. The gap is closed from top but is open from bottom. Due to differential temperature between pressure tube and calandria tube, air flow is induced by natural convection.
A Borgohain +2 more
exaly +2 more sources