Experience of Ensuring Industrial Safety for Liquefied Gases Isothermal Storages based on their Actual Technical Condition

N.I. Azarov, N.D. Bagatov, Yu.Z. Massarsky, S.N. Pichkov, I.V. Razuvayev

Experience of development and long term use of complexes for monitoring the condition of large-capacity liquefied gases isothermal storage during storages operation based on actual technical condition is given in the Article. The problems are reviewed, which had been occurring during establishment of first monitoring complexes at post-Soviet space, and the achieved results are given.

Vibration Effect on Cement Concrete Reliability

G.N. Pshenichnyi

Staging of hydration process results in forming on the surface of solid cement grains of locally dispersed unhydrated zones «residual active centers — adsorptive bonded water», which shall be considered in theory and construction practice. The effect of vibration on concrete (reinforced concrete) activates water, provokes interaction of chemicals at the late stages that may be the reason of strength reduction and accidents.

Increase of Underground Electrical Installations Insulation Efficiency

M.V. Grishin

The limitation of access is shown for control of underground electrical installations insulation, mainly as a tool of ensuring protection against electrical shock. It is noted that the fundamental requirements for insulation should be the decrease of danger of methane ignition source occurrence. In accordance with this the trends of increasing control efficiency and reliability of insulation for mine electrical installations are proposed in the Article.

Equipment of the Enterprises with the New Generation Anemometers

A.A. Mesheryakov

The issues are reviewed related to the equipment of the enterprises with the new generation anemometers APR -2m, the current instruments park condition; the methods are given pertaining to the estimation of the required number of anemometers for mines and ore mines; the method of measurement of the air velocity in the excavations.

Ensuring Seismic Resistance of Power Engineering Facilities

I.V. Kaliberda

The issues are reviewed pertaining to ensuring seismic resistance of power engineering facilities of the Russian Federation. The information about normative base is given for ensuring  seismic resistance of nuclear and electric power stations, and other objects of power engineering, about applied approaches to defining seismic effects on the sites of the facilities location. The importance is substantiated of systematic approach to ensuring seismic resistance of power engineering objects at all the stages of their service life cycle considering changed properties of structures and equipment.

Research of the Rock Mass Stress State and Shows of the Rock Pressure in the Geodynamic Dangerous Region

N.I. Sinkevich

Research of the rock mass stress stateallows for ensuringthe reliabilityof geodynamic situation at different iron-ore deposits of the region, increase the level of forecast of the rock pressure show and the control of mechanism of the rock-bump hazard occurrence in the rocks.

The Mechanism of Sudden Outburst Development based on the «Outburst Wave» Type

Yu. M. Biryukov, R.R. Khodzhayev

The mechanism of sudden coal and gas outburst development based on the «outburst wave» type is reviewed in the Article. The thickness of the coal plug knocked out during methane discharge depending on the value of free gas pressure in the reservoir is defined.

Service Materials — is Everything «Okey»

S.A. Goncharov

The reasons are reviewed pertaining to the increase of incidents number during equipment operation. The attention is drawn to the hazard of trichlorethylene being part of maintenance materials composition, as well as for their compliance with working instruction, and process flow diagrams for equipment repair. The necessity of implementing perspective home-grown technologies of maintenance materials and training of personnel purchasing equipment for hazardous production facilities is emphasized in the Article.

Decrease of Human Factor Influence Increases Accident Risk

M.Yu. Guleykov

Many organizations are striking for reduction of human actions variability, first of all to minimize mistakes, but exactly this variability — in the form of fast adjustment under unforeseen events — actually supports safety in a dynamic and hazardous environment.

On the Terms of Technical Diagnostics and Life Time of Process Pipelines

N.A. Viktorov, N.M. Kirilenko

At present the primary technical diagnostics of process pipelines shall be conducted in 20 year of operation provided that the information is missing in the passport about the design (specified) service life. Specified life time based on the results of technical diagnostics, in this case, is not more than 10 years (according to the data of normative technical documentation) if the pipelines were in operation from 20 to 30 years, and not more than 8 years at pipelines operation life of more than 30 years. Due to the fact that for the greatest part of process (inter-shop) pipelines the metal degradation shall be defined by corrosion, the pipelines themselves are referred to suitable for repair objects, and the processes related to such phenomenon as metal creep and aging, in this case, are missing, then it is possible to perform primary technical diagnostics of the operating and commissioned pipelines in 30 years, and to establish specified life time equal to 10 years.