Determination method of residual life of main gas pipelines after long-term operation

2019 ◽  
pp. 42-44
Author(s):  
A. V. Burnashev ◽  
◽  
A. M. Bolshakov
Keyword(s):  
Residual Life ◽  
Determination Method ◽  
Gas Pipelines ◽  
Term Operation

Influence of the Long-Term Operation of Gas Pipelines on the Cyclic Crack-Growth Resistance of 17G1S Steel

2017 ◽  
Vol 52 (6) ◽  
pp. 827-833
Author(s):  
E. V. Kharchenko ◽  
S. Klysz ◽  
V. M. Palyukh ◽  
O. E. Kunta ◽  
T. M. Lenkovs’kyi
Keyword(s):  
Crack Growth ◽  
Crack Growth Resistance ◽  
Gas Pipelines ◽  
Term Operation ◽  
17G1s Steel

scholarly journals Impact of Long-Term Operation on the Reliability and Durability of Transit Gas Pipelines

2020 ◽  
Vol 70 (1) ◽  
pp. 115-126
Author(s):  
Okipnyi Igor ◽  
Poberezhny Lyubomyr ◽  
Zapukhliak Vasyl ◽  
Hrytsanchuk Andrii ◽  
Poberezhna Liubov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Fatigue ◽  
Static Loading ◽  
Physical And Mechanical Properties ◽  
Fatigue Tests ◽  
Gas Pipelines ◽  
Term Operation ◽  
Full Capacity ◽  
Corrosive Environments

AbstractCorrosion and corrosion-fatigue tests of the material of the pipeline, which was in operation for 41 years. It has been shown that prolonged operation reduces the parameters of resistance to fatigue and prolonged static loading in corrosive environments. It was established that the degradation of physical and mechanical properties is insignificant, Ukraine’s main gas pipelines are ready to operate at full capacity provided that timely monitoring measures are carried out.

scholarly journals STRUCTURAL LEVELS OF THE NUCLEATION AND GROWTH OF FATIGUE CRACK IN 17MN1SI STEEL PIPELINE AFTER LONG-TERM SERVICE

Transport ◽  
2015 ◽  
Vol 30 (1) ◽  
pp. 15-23 ◽  
Author(s):  
Pavlo Maruschak ◽  
Sergey Panin ◽  
Ilya Vlasov ◽  
Olegas Prentkovskis ◽  
Iryna Danyliuk
Keyword(s):  
Fatigue Crack ◽  
Residual Life ◽  
Degradation Kinetics ◽  
Life Time ◽  
Nucleation And Growth ◽  
Gas Pipelines ◽  
Deformation And Fracture ◽  
Structural Levels ◽  
Kinetics Of

The majority of modern gas pipelines in Ukraine, Lithuania and Russia have been operating for more than 30–40 years. The problem of forecasting residual life-time of materials comprising such gas pipelines calls for study of their degradation kinetics as well as requires to determine its relationship with the strain-force loading parameters. The aim of the paper is to study the kinetics of fracture in order to range mechanisms of cyclic deformation of 17Mn1Si steel at nucleation and growth of a fatigue crack. Flat specimens were cut out from a fragment of 17Mn1Si steel pipe after 40 years of service. Microstructures of specimens were examined. In the paper, an attempt was made to apply the combined approach to study of deformation and fracture based on the following research parameters from nonlinear fracture mechanics: physical mesomechanics and numerical fractography.

Effect of Long Term Operation on Degradation of Material of Main Gas Pipelines

2014 ◽  
Vol 782 ◽  
pp. 279-283 ◽  
Author(s):  
Pavlo Maruschak ◽  
Roman Bishchak ◽  
Igor Konovalenko ◽  
Abdellah Menou ◽  
Janette Brezinová
Keyword(s):  
Digital Images ◽  
Main Pipeline ◽  
Gas Pipelines ◽  
Indentation Method ◽  
Term Operation ◽  
Metal Damage

The mechanisms of metal damage in the pipe of the main pipeline are investigated, the main reasons for their appearance are found and analysed. The main results are obtained by joint use of metallography, indentation, method for processing and analysis of digital images.

The question of forecasting residual resource artillery weapons

2020 ◽  
pp. 291-294
Author(s):  
A.M. Pushkaryov ◽  
A.A. Muralev
Keyword(s):  
Working Condition ◽  
Residual Life ◽  
Technical Condition ◽  
Term Operation ◽  
Maximum Tolerance

The issue of forecasting the technical condition of the object, on the example of artillery weapons, is considered. The criterial relations of the working condition of the object are analyzed. A methodology for predicting the residual life of weapons products is proposed, which allows you to assign the maximum tolerance of the determining parameter for long-term operation of the products.

Physical and Mechanical Aspects of Corrosion Damage of Distribution Gas Pipelines After Long-Term Operation

2018 ◽  
Vol 18 (3) ◽  
pp. 562-567 ◽  
Author(s):  
Pavlo Maruschak ◽  
Lyubomyr Poberezny ◽  
Olegas Prentkovskis ◽  
Roman Bishchak ◽  
Andriy Sorochak ◽  
...  
Keyword(s):  
Corrosion Damage ◽  
Gas Pipelines ◽  
Term Operation

scholarly journals THE MAIN GAS PIPELINES DEFECTS ANALYZING BY OPERATION PERIOD AND EXTENSION

2019 ◽  
pp. 93-99
Author(s):  
S. V. Kitaev ◽  
N. M. Darsalia ◽  
I. R. Baykov ◽  
O. V. Smorodova
Keyword(s):  
Gini Index ◽  
Gas Pipeline ◽  
Pipeline System ◽  
Gas Pipelines ◽  
Line Pipe ◽  
Term Operation ◽  
Wide Range ◽  
Operation Period ◽  
Standard Service

The gas pipeline system of PJSC «Gazprom» is at the stage of long-term operation. Most of the pipelines exceed the standard service life of 33 years, while considerable resources are required to maintain the trunk gas pipelines in an efficient state. The article analyzes the defectiveness of gas mains by the example of LLC «Gazprom transgaz Ufa». The company’s gas pipeline system consists of a wide range of diameters pipes ranging from DN 400 to DN 1400 mm. Its structure is dominated by pipelines with a diameter of DN 400, 500, 700, 1400 mm, which share exceeds 86 %. An integral Gini index is proposed for monitoring the differentiation of defects along the length of the line pipe of the main gas pipelines. By the value of the proposed indicator, it is possible to analyze and compare the sections of gas pipelines among themselves, to identify the signs that affect the development of defects along the line pipe of the main gas pipelines.

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