“…The critical brittleness temperature T c is therefore the basic material constant used in calculations (as specified by PNAE G-7-002-86 Rules of strength calculation for equipment and pipelines of nuclear power plants: Russian Rules and Standards in Nuclear Power Engineering), whereas the dose-time relationships T c –DTR are determined immediately from SSs testing avoiding using the Δ T c (Surkov et al , 1979; Dub, Skorobogatykh, Anosov, Zharov, Zubchenko, Piminov and Shamardin, 2011; Dub, Skorobogatykh, Anosov, Zharov, Zubchenko and Piminov, 2011; Dub et al , 2012, 2016).…”