Federal service on an ecological, technological and atomic supervision completed investigation of reasons of failure, happening on May, 10 in the Lacustrine street in Moscow, the leader of Rostekhnadzora Nikolay Kut’in reported. According to him, the Moscow mezhregional’nym territorial management of Rostekhnadzora is sign the proper certificate on results technical investigation of reasons of failure, happening on an underground gas pipeline high pressure, by a diameter 700 mm, to address: Lacustrine
street, d. 46.on marked that «to work of court of inquiry, besides the specialists of the Moscow management of Rostekhnadzora independent technical experts and expert organizations were attracted, including from other regions of Russia».v motion of investigation
a project and executive document was studied on a gas pipeline, examinations of standards of metal of the damaged gas pipeline, vzryvotekhnicheskaya examination, are conducted, and similarly analysis of results of inspection of pipe after a failure. Were polled direct
participants of works on localization and liquidation of failure, a review of site of damage of gas pipeline and material proofs is held, foto- and video data is studied.As a result, by a commission it was set following. examination rotined absence
external explosive affecting gas pipeline.In the period of production of works on building of gas pipeline in 1980 the bends of pipe were sufferet in horizontal and in a vertical plane. Thus there was the napryazhenno-deformirovannoe state in the place of bend
metal of pipe, weakening prochnostnye descriptions of metal. The place of bend coincides with the mestome of failure.It is exposed a commission, that in 1996 on this area of gas pipeline conducted work on the removal of outgassing, in the process of works a protective case was intagliated
on a gas pipeline, found out a crack 25 mm in the tel of pipe brewed and increased by a metallic protective strap.On completion of works an intagliated protective case is not recovered, the analysis of reasons of origin of crack was not conducted.It is also confirmed that workovers in
1996 to the year about
destructive processes in the structure of material of pipe. Coming from the results of investigation and on the basis of conclusions of expert organizations, a commission came to the conclusions, that a failure 10.05.09 on the area of gas pipeline happened because of instantaneous (avalanche-type)
development of crack in material of pipe.Analysis of actions of leaders, specialists and workers of GUP «Mosgaz» on localization of the created emergency situation shows that their actions were not concerted and not organizovany:* absented co-ordination of action of emergency
brigades from nekompetentnykh commands from the side of the Controller’s management;* director general GUP «Mosgaz» Trukhin a.N. did not provide the centralized management works on localization of emergency situation, that resulted in the erroneous estimation of accordion situation,
scales of development of failure and destabilized a situation.Materials of technical investigation will be passed in consequence organs, revealed to the portal EnergyLand.info in press-sluzhbe of Rostekhnadzora.
