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Morihira, Masayuki; Nakamura, Masahiro; Ozawa, Takayuki; Kihara, Yoshiyuki; Hellwig, C.*; Ingold, F.*; Bakker, K.*
JNC TY8400 2005-006, 320 Pages, 2005/08
JNC-TY8400-2005-006.pdf:18.0MB
The collaboration project concerning sphere-pac fuel (SPF) among JNC, PSI and NRG was performed from 1996 till 2005. Total sixteen fuel segments (eight pins) of three types of fuel were fabricated in PSI. Two SPF segments contained 5%Np in addition to 20%Pu-MOX. Other segments contained no Np. The fuel microsphere for SPF was fabricated by the internal gelation process. The trial to apply the internal gelation process to Np-MOX fabrication was successfully attained. The test pins were transported to Petten in the Netherlands in September 2003 and assembling of the sample holders was done. Three steady state irradiation tests and one power-to-melt test were performed in HFR. Two test pins (four segments) were irradiated every tests simultaneously. The former tests were performed mainly to obtain the restructuring data of SPF in the early beginning of irradiation. The later was done to evaluate PTM linear heat rate of SPF with the reference data for pellet fuel. The irradiation tests were performed in January to March 2004 and December 2004 to March 2005. Post irradiation examination was completed in August 2005. In this project the irradiation tests in HFR was doubtless main task but so many other works were also performed i.e. transfer of the technology concerning modeling and design of sphere-pac fuel from PSI to JNC, additional destructive PIE of IFA-550.11 fuel (a power ramp test of sphere-pac fuel segment irradiated in the Gösgen PWR), fabrication tests in PSI, etc. This report summarized the planning of the irradiation tests, fuel design, result of fabrication, irradiation, post irradiation examination and data analysis. SPF design codes, DIRAD-S, SIMPLE-S which was developed by implanting SPF models of PSI into the pellet design codes in JNC, were verified with the irradiation test data in this project to show good accuracy.
Morihira, Masayuki; Ozawa, Takayuki; ; Suzuki, Masahiro; Shigetome, Yoshiaki; Kihara, Yoshiyuki; Kono, Shusaku
JNC TN8400 2004-014, 193 Pages, 2004/07
JNC-TN8400-2004-014.pdf:24.52MB
The collaboration project concerning sphere-pac fuel among JNC, Swiss PSI (Paul Scherrer Institut) and Dutch NRG (Nuclear Research and Consultancy Group) is in progress.Final target of the project is comparative irradiation tests of Sphere-pac fuel in the HFR (High Flux Reactor) in Petten in the Netherlands with pellet type fuel and vipack fuel. Total 16 fuel segments (8 pins) of these three types of fuel are planned to be irradiated. Two sphere-pac fuel segments contain 5%Np in addition to 20%Pu-MOX. Other segments contain no Np. Fabrication of irradiation test pins was completed till May 2003 in PSI. After transportation of the fuel pins to Petten, two times of irradiation were performed in January to March in 2004 and now post irradiation tests are in progress. Later two irradiations will be done till the autumn in 2004.This report summarized the basic plan, fuel design, and fabrication of irradiation test pins concerning this collaboration project.
Sphere-Pac Fuels Irradiated with Pellet Type Fuels in G
sgen-PWR and HBWR -IFA-550.11 Irradiation Test-Morihira, Masayuki
JNC TY8400 2004-006, 64 Pages, 2004/06
JNC-TY8400-2004-006.pdf:68.01MB
Comparative irradiation tests between sphere-pac fuel (SPF) and pellet type fuel (PF) were performed in the frame work among PSI (Paul Scherrer Institut) in Switzerland, Siemens Ltd in Germany and Swiss KKG (Kernkraftwerk Gsgen).Those fuel pins were irradiated in Gsgen-PWR for four cycles up to 40 GWd/tU. One SPF and one PF segment were taken out from the one cycle irradiation pin and the three cycle pin respectively. Those four segments were cut and re-instrumented on-line pressure tranducers subsequently applied to the ramp test in the Halden-BWR. This report describes the PIE result of rod S04 (SPF) and N06 (PF) which were applied to the ramp test after the three cycle base irradiation. It bases on the PIE reports by IFE/Kjeller and analysis reports by PSI.
Ozawa, Takayuki; Nakazawa, Hiroaki; Abe, Tomiyuki
JNC TY8410 2003-002, 40 Pages, 2003/06
JNC-TY8410-2003-002.pdf:63.99MB
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; Nakazawa, Hiroaki; ; Nagayama, Masahiro*
JNC TY8410 2003-001, 47 Pages, 2003/04
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Ozawa, Takayuki; Nakazawa, Hiroaki; ; Nagayama, Masahiro*
JNC TY8410 2001-002, 46 Pages, 2002/02
JNC-TY8410-2001-002.pdf:4.62MB
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Ozawa, Takayuki; Nakazawa, Hiroaki; Abe, Tomoyuki; Nagayama, Masahiro*
JNC TY8410 2001-001, 42 Pages, 2001/10
JNC-TY8410-2001-001.pdf:1.43MB
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