... Neutron irradiation can reduce the flaw tolerance of cold-worked Zr-2.5 Nb. One possible way to retrieve the good fracture properties is to remove the irradiation damage by heat treatment. The results of experiments have shown that a short heat treatment can be effective; for example, 10 min...

... Specimens of cold-worked Zr-2.5% Nb pressure tube material fabricated by several different routes have been irradiated unstressed in the Dido reactor at Atomic Energy Research Establishment (AERE) Harwell to fluences up to 7.5 × 10 25 n/m 2 , E & 1 MeV (about 18 dpa). Their irradiation...

... research program was initiated by Ontario Hydro. Its objective was to determine the consequences of pressure tube-calandria tube contact for channels in other reactors with Zr-2.5 Nb pressure tubes. The purpose of this paper is to present some of the results that have been obtained in the areas of blister...