CANMET reactor neutron diffraction residual stress measurement

It's not easy. You can go to Canada and use the CANMET reactor and do neutron diffraction, except you've got to bring your sample to Canada, and it's not always that easy to bring a pressure vessel to Canada. We know that if you hold that temperature for one hour per inch of thickness and soak it through, and you put thermocouples on there, and you get it up to that temperature, you will soften it enough that it will relieve its own stresses. That's been well proven.