TY JOUR TI To Matters of Heptyl Transportation by Rail KW Transportation of heptyl KW railroad transport KW security valve of the tank car KW calculation of the diameter of the inlet safety valve orifice KW heptyl properties JO Proceedings of Petersburg Transport University AU Lapshin, N.D. AU Milen'kih, V.A. AU Dul'neva, S.V. AU Asmankin, E.G. AU Sil'yanova, T.A. PY 2023 IS 20 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"