| 摘要 |
The present invention relates to the technical field of acquisition of irradiation damage and irradiation effect of a nuclear reactor material. Disclosed is a method for calculating irradiation deformation of a zirconium 2.5niobium pressure pipe in a CANDU reactor, using the following formula to calculate the irradiation deformation: (1), (1a), (1b) and (1c). In the formulas, (A) is a strain rate in direction d, and comprises strain rates in a transverse direction and an axial direction, a unit of the strain rate being 10-8h-1; (B) is an average thermal creep rate of an inner diameter of the pressure pipe, a unit of the average thermal creep rate being 10-8h-1; (C) is an irradiation elongation of the pressure pipe in the direction d, an unit of the irradiation elongation being 10-8h-1; (D) is an irradiation creep rate of the pressure pipe in the direction d, a unit of the irradiation creep rate being 10-8h-1. The established irradiation deformation equation of the zirconium 2.5niobium pressure pipe in the CANDU reactor can be directly used in the calculation of irradiation deformation. The irradiation deformations of a Qinshan pressure pipe in an axial direction and a radial direction can be calculated via the equations and compare to in-service measured data, and relative errors show a normal distribution. |
