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Pogodin V.K.,IrkutskNIIkhimmash Research Institute | Trutaev S.Y.,IrkutskNIIkhimmash Research Institute | Trutaeva V.V.,IrkutskNIIkhimmash Research Institute
Chemical and Petroleum Engineering | Year: 2016

The basic assumptions of a technique of optimal design of releasable hoop connections developed at Irkutsk-NIIkhimmash are considered. The technique is based on the use of the finite element method in combination with application methods of multidimensional optimization and makes it possible to design a hoop connection of minimal mass while simultaneously satisfying strength and air-tightness constraints. Through the use of the proposed technique and a computer program that is part of the COMPASS software system, we were able to introduce a number of releasable hood connections of standard sizes at the Chemical Plant of Angarsk Petrochemical Company of Rosneft as well as optimize the costs of maintenance and repair of the high-pressure equipment and reduce the rate of industrial accidents occurring in the course of repair operations. © 2016 Springer Science+Business Media New York Source


Korchagin A.P.,IrkutskNIIkhimmash Research Institute | Kuznetsov K.A.,IrkutskNIIkhimmash Research Institute | Murashov A.O.,IrkutskNIIkhimmash Research Institute | Yudin A.N.,IrkutskNIIkhimmash Research Institute | Demkin S.V.,IrkutskNIIkhimmash Research Institute
Chemical and Petroleum Engineering | Year: 2016

The dependence of fracture toughness (stress intensity factor K1c) for steels on their mechanical properties (yield strength and impact energy) taking account of the effect of temperature is considered. The nature of change in K1c in the temperature range +20 to –40°C is demonstrated on the example of three steels. © 2016 Springer Science+Business Media New York Source


Murashov A.O.,IrkutskNIIkhimmash Research Institute | Korchagin A.P.,IrkutskNIIkhimmash Research Institute | Minenko N.Y.,IrkutskNIIkhimmash Research Institute | Demkin S.V.,IrkutskNIIkhimmash Research Institute | Yudin A.N.,IrkutskNIIkhimmash Research Institute
Chemical and Petroleum Engineering | Year: 2016

Reasons are studied for breakdown and failure of tubular coil elements (finned tubes) designed for heating a production medium with flue gas heat before entering reaction columns. An analysis of cases of abnormal and emergency situations shows that cases of finned tube damage and breakdown occur predominantly due to infringement of operating regimes, changes in material properties during operation, and irregularities of the tube manufacturing process. © 2016 Springer Science+Business Media New York Source

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