Investigation of the role of irradiation on the corrosion resistance of structural alloys is of vital importance for selection of supercritical water-cooled reactor (SCWR) materials. Gamma heating under SCWR conditions, which induces enhancement of radiolysis and corrosion kinetics at interfaces, can be efficiently simulated by electron beam irradiation over a wide range of deposited dose and temperature. The NSC KIPT-sited Canada–Ukraine Electron Irradiation Test Facility (CU-EITF) still remains the only operating facility capable of in situ irradiation of specimens in a supercritical water (SCW) natural circulation loop. This paper reports the results of postirradiation studies of Zr–1%Nb and Ni–Cr Inconel 690/52MSS alloys after a ~500-h-long exposure in the CU-EITF in the near-critical (23.5 MPa/360–385°C) regime. Results of scanning electron microscopy (SEM) studies of the sample microstructure are presented along with those of the electron-irradiated loop piping, SS X18H10T. The results of corrosion tests under electron-irradiation are correlated to the calculated three-dimensional (3D) fields of absorbed dose and temperature and to the reference data obtained in-pile for topical materials. The paper also discusses the prospects for the use of the CU-EITF facility within a cooperative SCWR program and presents an outlook of the facility development.

References

References
1.
Allen
,
T.
,
Chen
,
Y.
,
Ren
,
X.
,
Sridharan
,
K.
,
Tan
,
L.
,
Was
,
G.
,
West
,
E.
, and
Guzonas
,
D.
,
2012
,
Material Performance in Supercritical Water
(Comprehensive Nuclear Materials, Vol.
5
),
R. J. Konings
, ed.,
Elsevier
,
Oxford, U.K.
, pp.
279
326
.
2.
Zychová
,
M.
,
Vojáček
,
A.
,
Růžičková
,
M.
,
Fukač
,
R.
, and
Křečanová
,
E.
,
2013
, “
New Research Infrastructure for SCWR in Centrum Výzkumu Řež
,”
Proceedings of the 6th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR-6)
,
Mar. 3–7
,
China Guangdong Nuclear Power Corp. (CGNPC)
,
Shenzhen, Guangdong, China
, On CD-ROM, Paper No. 13031.
3.
Bakai
,
A.
,
Boriskin
,
V.
,
Dovbnya
,
A.
,
Dyuldya
,
S.
, and
Guzonas
,
D.
,
2011
, “
Supercritical Water Convection Loop (NSC KIPT) for Materials Assessment for the Next Generation Reactors
,”
Proceedings of the 5th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR-5)
,
Vancouver, BC, Canada
,
Mar. 13–16
,
Canadian Nuclear Society (CNS)
,
Toronto, ON, Canada
, On CD-ROM, Paper No. 51.
4.
Bakai
,
A.
,
Boriskin
,
V.
,
Dovbnya
,
A.
,
Dyuldya
,
S.
, and
Guzonas
,
D.
,
2013
, “
Supercritical Water Convection Loop for SCWR Materials Corrosion Tests Under Electron Irradiation: First Results and Lessons Learned
,”
Proceedings of the 6th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR-6)
,
Mar. 3–7
,
China Guangdong Nuclear Power Corp. (CGNPC)
,
Shenzhen, Guangdong, China
, On CD-ROM, Paper No. 13062.
5.
Petelguzov
,
I.
,
2002
, “
Study of the Corrosion Kinetics of Calcium-Thermal Zr–1%Nb Alloy Fuel Elements Piping in a 400–500°C Water Steam
,”
Prob. At. Sci. Tech., Ser.: Rad. Damage Phys. Rad. Mat. Sci.
,
82
(
6
), pp.
88
94
(in Russian).
6.
Xu
,
P.
,
Zhao
,
L.
,
Sridharan
,
K.
, and
Allen
,
T.
,
2012
, “
Oxidation Behavior of Grain Boundary Engineered Alloy 690 in Supercritical Water Environment
,”
J. Nucl. Mater.
,
422
(
1–3
), pp.
143
151
.10.1016/j.jnucmat.2011.12.022
7.
Guzonas
,
D.
,
Bissonette
,
K.
,
Deschenes
,
L.
,
Dole
,
H.
, and
Cook
,
W.
,
2013
, “
Mechanistic Aspects of Corrosion in a Supercritical Water-Cooled Reactor
,”
Proceedings of the 6th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR-6)
,
Mar. 3–7
,
China Guangdong Nuclear Power Corp. (CGNPC)
,
Shenzhen, Guangdong, China
, On CD-ROM, Paper No. 13086.
8.
Bakai
,
A.
,
2011
, “
Theory of the Heterophase Fluctuations in the Vicinity of Gas-Liquid Critical Point
,”
Proceedings of the 5th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR-5)
,
Vancouver, BC, Canada
,
Mar. 13–16
,
Canadian Nuclear Society (CNS)
,
Toronto, ON, Canada
, On CD-ROM, Paper No. 52.
9.
Guzonas
,
D.
,
Brosseau
,
F.
,
Tremaine
,
P.
,
Meesungnoen
,
J.
, and
Jay-Gerin
,
J.-P.
,
2012
, “
Water Chemistry in a Supercritical Water-Cooled Pressure Tube Reactor
,”
Nucl. Technol.
,
179
(
2
), pp.
205
219
.
This content is only available via PDF.
You do not currently have access to this content.