TY JOUR TI MODERN MEANS OF ENSURING FIRE PROTECTION OF STEEL STRUCTURES OF OIL AND GAS FACILITIES KW algorithm KW intumescent compositions KW fire protection KW steel structures KW oil and gas complex JO Problems of risk management in the technosphere AU Kalach, A.V. AU Golovina, E.V. AU Krutolapov, A.S. PY 2023 IS 2023 PB Saint-Petersburg University of State Fire Service of Emercom of Russia