Stress Relief 1 : Controlled heating of material to a predetermined temperature for the purpose of reducing any residual stresses after welding. (Spec 6A, Spec 16A)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}