NEA-1615 IFPE/CEA-DEFECTFUEL.

1. NAME:  IFPE/CEA-DEFECT FUEL.

3. DESCRIPTION

The  release of fission products from irradiated UO2 into  the fuel-clad  gap  of  a sound rod has been studied  extensively, both  theoretically  and  experimentally.   By  contrast  very little  is  known about the behaviour within a defective  rod, where the pressure of water or steam in the gap may modify the processes of release from the fuel, through the defect, to the coolant.

A series of loop experiments have been performed on short fuel rods  by  CEA  in  France  with  the  aim  of  measuring and interpreting  the  release rate of fission  gases  and  iodine under  a  range  of experimental conditions of  linear  power, defect type, gap dimensions etc. The  results  from  these experiments,  which  cover steady state  and  transient  power operation  on new and pre-irradiated fuel, provide  invaluable data  for  modelling  the  escape  of  fission  products  from defective  fuel rods. In a commercial reactor, such  modelling is  important for assessing the occurrence and characteristics of defective fuel from analysis of coolant activity. Knowledge of  the presence of defective fuel can eliminate the need  for premature shut down of the reactor and a also minimizes outage time,  thus  improving  the  safety  and  economics  of  power generation.

The experiments were all performed in the Siloe reactor in one of two water loops called Bouffon and Jet Pompe.

The  Bouffon loop consists of two vertical tubes connected  at both  ends to form a continuous circuit for pressurised water. The  experimental fuel rod is situated in the  bottom  of  one tube below a heater which provides an up current of water  and hence  by  thermosyphoning, a flow of cooling water  over  the experimental fuel rod.

The Jet Pompe loop comprises two co-axial vertical tubes.  The experimental  fuel  rod  is situated in  the  inner  tube  and coolant  flow over it is provided by a steam injector pump  at the  bottom of the same tube.  The steam at 400 C and 35  bars is  obtained from a steam generator installed elsewhere in the rig.

The CEA Defect Fuel experiments are CYFON 1, CYFON 2, EDITH 1, EDITH 2, EDITH 5, CRUSIFON 1BIS, CRUSIFON 1 and CRUSIFON 5.

- P. Chenebault, G. Kurka, A. Harrer, G. Lasne and M. Vivier:
Emission de Produits de Fission par un Crayon Presentant une fuite
de Conductance Elevee en Partie Haute et Soumis a Cyclage de Puissance
Experience CYFON 1
Compte-Rendu DMG No.103/77 (Fiche d'Action 4112) 30 Novembre 1977
- Y. Kauffmann, Y. Barbier and M. Brun:
Examens apres Irradiation de CYFON 1
Compte-Rendu DMG No.104/77 (Fiche d'Action 4112) 30 Novembre 1977
- Analyse et Synthese de l'Experience Etalonnage Bouffon
Bouffon Loop Temperatures
Note Technique SEDTI 90/NT/6395 (15/06/90)
- V.V. Likhanskii, I.A. Evdokimov, A.A. Sorokin, V.D. Kanukova (TRINITI):
Verification of the RTOP-CA code against the OECD/NEA/IAEA IFPE database on
activity release from defective fuel rods
- P. Chenebault, G. Kurka, A. Harrer, G. Lasne and M. Vivier:
Emission de Produits de Fission par un Crayon Presentant une fuite
de Conductance Elevee en Partie Haute et Soumis a Cyclage de Puissance
Experience CYFON 2
Compte-Rendu DMG No.19/78 (Fiche d'Action 4112) 8 fevrier 1978
- Analyse et Synthese de l Experience Etalonnage Bouffon
Bouffon Loop Temperatures
Note Technique SEDTI 90/NT/6395 (15/06/90)
- V.V. Likhanskii, I.A. Evdokimov, A.A. Sorokin, V.D. Kanukova (TRINITI):
Verification of the RTOP-CA code against the OECD/NEA/IAEA IFPE database on
activity release from defective fuel rods
- A. Harrer, Y. Kauffmann, G. Kurka, G. Lasne, M. Vivier and M. Brun:
Emission de Produits de Fission a Differents Niveaux de Puissance par
un Crayon Presentant une Fuite de Conductance Elevee en Partie Haute
Experience EDITH 01
Compte-Rendu DMG No.58/79 (Fiche d'Action 4112) 23 avril 1979
- Analyse et Synthese de l'Experience Etalonnage Bouffon
Bouffon Loop Temperatures
Note Technique SEDTI 90/NT/6395 (15/06/90)
- V.V. Likhanskii, I.A. Evdokimov, A.A. Sorokin, V.D. Kanukova (TRINITI):
Verification of the RTOP-CA code against the OECD/NEA/IAEA IFPE database on
activity release from defective fuel rods
- R. Warlop, M. Vivier and G. Antelme:
Resultats de l'Experience EDITH 2 (Dossier No.4)
Compte-Rendu DMG No.30/81 (Fiche d'Action 4172-60) 23 avril 1981
- R. Warlop:
Examen apres Irradiation de EDITH 2 (Dossier No.5)
Compte-Rendu DMG No.18/84 (22 mars 1984)
- Analyse et Synthese de l'Experience Etalonnage Bouffon
Bouffon Loop Temperatures
Note Technique SEDTI 90/NT/6395 (15/06/90)
- V.V. Likhanskii, I.A. Evdokimov, A.A. Sorokin, V.D. Kanukova (TRINITI):
Verification of the RTOP-CA code against the OECD/NEA/IAEA IFPE database on
activity release from defective fuel rods
- R. Warlop, M. Vivier and G. Antelme:
Resultats de l'Experience EDITH 5 (Dossier No.4)
Compte-Rendu DMG No.29/85 (Action 4172.60) 2 mai 1985
- Analyse et Synthese de l'Experience Etalonnage Bouffon
Bouffon Loop Temeratures
Note Technique SEDTI 90/NT/6395 (15/06/90)
- V.V. Likhanskii, I.A. Evdokimov, A.A. Sorokin, V.D. Kanukova (TRINITI):
Verification of the RTOP-CA code against the OECD/NEA/IAEA IFPE database on
activity release from defective fuel rods
- A. Harrer, G. Kurka, R. Warlop, G. Lasne and M. Vivier:
Resultats de l'Experience CRUSIFON 1 bis (dossier No.4)
Compte-Rendu DMG No.40/81 (Action 4172-60) 19 mai 1981
- Y. Kauffmann:
CRUSIFON 1 bis - Examens apres Irradiation
Compte-Rendu DMG No.80/95 (Action 4172-70) 26 aout 1980
- Analyse et Synthese de l'Experience Etalonnage Bouffon
Bouffon Loop Temperatures
Note Technique SEDTI 90/NT/6395 (15/06/90)
- V.V. Likhanskii, I.A. Evdokimov, A.A. Sorokin, V.D. Kanukova (TRINITI):
Verification of the RTOP-CA code against the OECD/NEA/IAEA IFPE database on
activity release from defective fuel rods
- A. Harrer, G. Kurka, R. Warlop, G. Lasne and M. Vivier:
Resultats de l'Experience CRUSIFON 2
Compte-Rendu DMG No.61/80 (Action 4172-60) 22 mai 1980
- Y. Kauffmann and M. Brun:
Resultats apres Irradiation de CRUSIFON 2
Compte-Rendu DMG No.73/78 (Action 4112) 26 juin 1978
- Analyse et Synthese de l'Experience Etalonnage Bouffon
Bouffon Loop Temperatures
Note Technique SEDTI 90/NT/6395 (15/06/90)
- V.V. Likhanskii, I.A. Evdokimov, A.A. Sorokin, V.D. Kanukova (TRINITI):
Verification of the RTOP-CA code against the OECD/NEA/IAEA IFPE database on
activity release from defective fuel rods
- R. Warlop, Y. Kauffmann, A. Gueguen, M. Brun, M. Vivier, G. Antelme:
Resultats de l'Experience CRUSIFON 5 (dossier No.4)
Compte-Rendu DMG No.46/82 (Action 4172-60) 14 juin 1982
Examens Post Irradiatoires du Crayon CRUSIFON 5
(dossier No.5)
- Analyse et Synthese de l'Experience Etalonnage Bouffon
Bouffon Loop Temperatures
Note Technique SEDTI 90/NT/6395 (15/06/90)
- V.V. Likhanskii, I.A. Evdokimov, A.A. Sorokin, V.D. Kanukova (TRINITI):
Verification of the RTOP-CA code against the OECD/NEA/IAEA IFPE database on
activity release from defective fuel rods
- D. Parrat and C. Baud:
Resultats de l'Irradiation EDITHMOX 1 (Part I: Text and Tables)
Compte-rendu DTP/SECC No.41/93 (28 fevrier 1994) (17a)
- D. Parrat and C. Baud:
Resultats de l'Irradiation EDITHMOX 1 (Part II: Figures)
Compte-rendu DTP/SECC No.41/93 (28 fevrier 1994) (17b)
- G. Eminet, D. Venet and Ph. Dehaudt:
Note Technique DTP/SECC No.95-14-A
EDITHMOX 01: Examen Ceramographique apres Attaque Chimique (18)
- D. Parrat and J.P. Leveque:
Examens Post-Irradiatoires: Analyse des Resultats des Scrutations Gamma
de Section EDITHMOX 1
Note Technique NT SECC 76/92 (24/12/92) (19)
- V.V. Likhanskii, I.A. Evdokimov, A.A. Sorokin, V.D. Kanukova (TRINITI):
Verification of the RTOP-CA code against the OECD/NEA/IAEA IFPE database on
activity release from defective fuel rods

15. ESTABLISHMENT OF AUTHORS

       Centre d'Etudes Nucleaires de Grenoble
       B.P. 85
       F-38041 GRENOBLE CEDEX
       France

Compilation: J.A. Turnbull

CEA-DFT.doc Description and overview of the experiment (Word format)
CEA-DFT.SUM Description and overview of the experiment (text format)
CYFON-1.DAT Data for CYFON 1
QA REPORT.PDF QA Report for CENG Defect Fuel Experiments
READ.ME Readme file

CEA-DFT.doc Description and overview of the experiment (Word format)
CEA-DFT.SUM Description and overview of the experiment (text format)
CYFON-2.DAT Data for CYFON 2
QA REPORT.PDF QA Report for CENG Defect Fuel Experiments
READ.ME Readme file

CEA-DFT.doc Description and overview of the experiment (Word format)
CEA-DFT.SUM Description and overview of the experiment (text format)
EDITH-1.DAT Data for EDITH 1
QA REPORT.PDF QA Report for CENG Defect Fuel Experiments
READ.ME Readme file

CEA-DFT.doc Description and overview of the experiment (Word format)
CEA-DFT.SUM Description and overview of the experiment (text format)
EDITH-2.DAT Data for EDITH 2
QA REPORT.PDF QA Report for CENG Defect Fuel Experiments
READ.ME Readme file

CEA-DFT.doc Description and overview of the experiment (Word format)
CEA-DFT.SUM Description and overview of the experiment (text format)
EDITH-5.DAT Data for EDITH 5
QA REPORT.PDF QA Report for CENG Defect Fuel Experiments
READ.ME Readme file

CEA-DFT.doc Description and overview of the experiment (Word format)
CEA-DFT.SUM Description and overview of the experiment (text format)
CRUS-1B.DAT Data for CRUSIFON 1bis
QA REPORT.PDF QA Report for CENG Defect Fuel Experiments
READ.ME Readme file

CEA-DFT.doc Description and overview of the experiment (Word format)
CEA-DFT.SUM Description and overview of the experiment (text format)
CRUS-2.DAT Data for CRUSIFON 2
QA REPORT.PDF QA Report for CENG Defect Fuel Experiments
READ.ME Readme file

CEA-DFT.doc Description and overview of the experiment (Word format)
CEA-DFT.SUM Description and overview of the experiment (text format)
CRUS-5.DAT Data for CRUSIFON 5
QA REPORT.PDF QA Report for CENG Defect Fuel Experiments
READ.ME Readme file

ED-MOX1.DAT Data for EDITHMOX 1
CEA-DFT.DOC Description of experiments (Word)
CEA-DFT.SUM Description of experiments (ASCII)
QA Report for CENG Defect fuel experiments
Read.me Readme file
EDITHMOX1-17aOCR.PDF Electronic documentation
EDITHMOX1-17bOCR.PDF Electronic documentation
EDITHMOX1-18OCR.PDF Electronic documentation
EDITHMOX1-19OCR.PDF Electronic documentation