Review of high-temperature graphite irradiation behavior

Abstract

I n a n i r r a d i a t i o n f i e l d g r a p h i t e s w i l l w i t h s t a n d s t r a i n s t e n 10 x lo2' n/cm2. The most, notable among the helium-cooled reactor projects ! I

Irradiation induced creep behavior of H-451 graphite

“…[2][3][4][5]. Recently it has been recognized that creep strain produces significant modifications to the dimensional change component (behavior) of the stressed specimen compared to that of the control and that this must be accounted for in the correct evaluation of creep data.…”

“…During operation in the reactor core graphite undergoes neutron irradiation induced dimensional changes [3,4]. Local differences in neutron dose and temperature cause differential stresses to develop in the graphite.…”

Pacific Northwest Laboratory annual report for 1973 on controlled thermonuclear reactor technology

“…4 and a f t e r t h e a t t a i n m e n t o f pure f u s i o n c a p a b i l i t y have been p r o j e c t e d .…”

The Study of Pore and Defect Structures of Prestressed Nuclear Graphite by the Radiotracer Method Using Krypton-85

“…(1) The pressure of the chamber in which specimens were placed was reduced up to ca.1x102 Pa using a vacuum pump. (2) The nitrogen gas containing 85Kr was let into the chamber to a pressure of 3.4 x 102 kPa.The system was held at this pressure for 120 min. (3) The gas was collected by evacuating the chamber to a pressure of 0.5-1x102…”