Description and characterization of HBWR Series H-1 test rods

Abstract

Viii D. 10 Typical Annular Pellet with Enrichment Symbol D-35 D.11 Axial Section of an Annular Pellet D-36 D. 12 Microstructure of a Polished FPIP-001, Revision 0 Annular Pellet D-36 D. 13 Microstructure of an Etched FPIP-001, Revision 0 Annular Pellet D-38 D.14 Microstructure of a Polished FPIP-001, Revision 1 Annular Pellet D-39 D. 15 Microstructure of an Etched FPIP-001, Revision 1 Annular Pellet D-40 D.16 Microstructure of a Polished FPIP-001, Revision 2 Annular Pellet D-41 D.17 Microstructure of an Etched FPIP-001 Revision 2 Annular Pellet D-42

Electrochemical Behavior of Solutions of Niobium Chlorides in Fused Alkali Chlorides

“…The influence of oxide ions has been recently examined in pure fluoride melt (Flinak) by von Barner et al 30 They reported that the introduction of oxide decreased the oxidizing power of Nb(V). When metallic niobium was introduced in an oxide-free solution of K2NbFT, a quantitative oxidation of the metal was obtained, Nb + 4 Nb(V) --~ 5 Nb(IV).…”

FUEL PERFORMANCE IMPROVEMENT PROGRAM Power-Ramp Testing and Postirradiation Examination of PCI- Resistant LWR Fuel Rod Designs

“…The minimum axial stress at the end of the power ascension (68.4 kW/m) in (8) Rod AC9 as calculated above for Rod AC11 was 84 MPa (12,200 psi). The resulting axial force in the cladding is 8600N, and the axial force in the fuel is -8600N.…”

“…The detailed elongation sensor signal histories during the power-ramping of Rods A6, AC9, AC11, and ACP27 were shown in Figures 6,7,8,and 9, respectively. These elongation signal histories are reduced in Figure 112 with key ._..…”