CATEGORY: NETWORK INTEGRITY
Corrosion and Protection of Underground Pipelines
Yujie Gai 1
zxnkym@126.com
1 College of Civil Engineering, Senior Engineer, Northeast Forestry University,
Hexing Road, No. 26 Harbin 150040; Telephone:15846001286;
Abstract
With
China's rapid development of the petrochemical industry and an improvement in
city utilities (water, gas, and sewer services), underground pipelines are
literally the "lifeline of city." However, corrosion can cause
perforations that will eventually lead to leakage accidents creating an
Underground Pipeline Hazard or “time bomb" when gas explosions or sewage
leakage occur. Corrosion protection has been related to the pipeline
reliability and service life, it also relates to people's livelihood and
security. This paper analyzes underground pipeline corrosion as a cause for
potential harm and offers specific measures of protection.
Introduction
According to the 2010 Ministry of Construction’s “City Underground Pipeline
Information Archives Management Measures" (Ministry of Construction Order
No. 136), and the city of Harbin’s “Underground Pipeline Management Interim
Measures" (City Hall No. 224), the relevant provisions are designed for
further improvements in measurement and information pertaining to subsurface
utility engineering, ensuring the integrity and accuracy of geographic
information, and providing the establishment of an information sharing system
for running a complete inspection. The inspection contains: the built, expanded
and rebuilt subsurface utility engineering and transformation of relocation of
the pipeline in the rebuilt projects under municipal roads in city planning
areas, including the essential pipelines which are water supply, drainage,
electricity, communications, power, gas and industrial piping. Built areas
occupy tens of millions of square kilometers, and the measurements in the built
projects are in strict accordance with the Ministry of Construction’s
“Underground Pipeline Detection Technology Standard" requirements in order
to determine the starting and ending point of a pipeline, and also the
coordinate and height of all the attachments (see Figure 1). They also make
require
Free Full Text Source: ftp://gsd.asce.org/ICPTT%202012%20Proceedings/ICPTT%20Proceedings%202012%20PDF%20071212/Draft_20075_V4.pdf
Showing posts with label NETWORK INTEGRITY. Show all posts
Showing posts with label NETWORK INTEGRITY. Show all posts
Wednesday, August 8, 2012
A decision model for executing plant strategy: maintaining the technical integrity of petroleum flowlines
CATEGORY: NETWORK INTEGRITY
International Journal of Decision Sciences, Risk and Management, Volume 4, Number 1–2/2012, Pages 1-24
A decision model for executing plant strategy: maintaining the technical integrity of petroleum flowlines
R.M. Chandima Ratnayake 1
1 Department of Mechanical and Structural Engineering and Materials Science (IKM), Faculty of Science and Technology, University of Stavanger - UiS, N–4036, Stavanger, Norway
Abstract
The 'strategic' management of technical integrity has become high profile recently within inspection and maintenance of assets in the process industry. The assets such as production and process facilities must be optimized and prioritized based on whether they are at the beginning or end of their design life.
In both cases, it is vital to ensure that sufficient condition monitoring data from all relevant sources are collated and analyzed as a part in a planned scheme of inspection and maintenance. This is largely driven by certifying authority requirements, sound mechanical and corrosion engineering principles as well as inspection and maintenance approaches, indicated in a plant strategy.
Author proposes a model to execute plant strategy using an analytic hierarchy process method. The model indicates the incorporation of requirements specified in a plant strategy for reaching optimized, prioritized and cost–effective outcome.
Full Text Source (Subscription or Fee): http://inderscience.metapress.com/content/x94617u44q07850m/
International Journal of Decision Sciences, Risk and Management, Volume 4, Number 1–2/2012, Pages 1-24
A decision model for executing plant strategy: maintaining the technical integrity of petroleum flowlines
R.M. Chandima Ratnayake 1
1 Department of Mechanical and Structural Engineering and Materials Science (IKM), Faculty of Science and Technology, University of Stavanger - UiS, N–4036, Stavanger, Norway
Abstract
The 'strategic' management of technical integrity has become high profile recently within inspection and maintenance of assets in the process industry. The assets such as production and process facilities must be optimized and prioritized based on whether they are at the beginning or end of their design life.
In both cases, it is vital to ensure that sufficient condition monitoring data from all relevant sources are collated and analyzed as a part in a planned scheme of inspection and maintenance. This is largely driven by certifying authority requirements, sound mechanical and corrosion engineering principles as well as inspection and maintenance approaches, indicated in a plant strategy.
Author proposes a model to execute plant strategy using an analytic hierarchy process method. The model indicates the incorporation of requirements specified in a plant strategy for reaching optimized, prioritized and cost–effective outcome.
Full Text Source (Subscription or Fee): http://inderscience.metapress.com/content/x94617u44q07850m/
Monday, August 6, 2012
Problems of the Influence of the Quality and Integrity of Input Data on the Reliability of Leak Detection Systems
CATEGORY: NETWORK INTEGRITY
Mechatronics, 2012, Part II, 255-264, DOI: 10.1007/978-3-642-23244-2_31
Problems of the Influence of the Quality and Integrity of Input Data on the Reliability of Leak Detection Systems
Mateusz Turkowski (1)
Andrzej Bratek (2)
1. Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, św. A. Boboli 8, 02-525 Warsaw, Poland
2. Industrial Research Institute for Automation and Measurements, Al. Jerozolimskie 202, 02-486 Warsaw, Poland
Abstract
Describes the problems encountered during implementation of leak detection and localization systems for liquid and gas pipelines. Discontinuities of the data acquired from telemetry systems, damaged or bad calibrated measuring transmitters, drift of measuring instruments, bad balance between fluid entering and leaving the system and problems of the correct installation of temperature transmitters were the main problems. They offer possible solutions on how to overcome these problems.
Full Text Source (Subscription or Fee): http://www.springerlink.com/content/k754471422n271g5/
Mechatronics, 2012, Part II, 255-264, DOI: 10.1007/978-3-642-23244-2_31
Problems of the Influence of the Quality and Integrity of Input Data on the Reliability of Leak Detection Systems
Mateusz Turkowski (1)
Andrzej Bratek (2)
1. Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, św. A. Boboli 8, 02-525 Warsaw, Poland
2. Industrial Research Institute for Automation and Measurements, Al. Jerozolimskie 202, 02-486 Warsaw, Poland
Abstract
Describes the problems encountered during implementation of leak detection and localization systems for liquid and gas pipelines. Discontinuities of the data acquired from telemetry systems, damaged or bad calibrated measuring transmitters, drift of measuring instruments, bad balance between fluid entering and leaving the system and problems of the correct installation of temperature transmitters were the main problems. They offer possible solutions on how to overcome these problems.
Full Text Source (Subscription or Fee): http://www.springerlink.com/content/k754471422n271g5/
The Application of a Non-Linear Model for Evaluating the External Corrosion Protection of a Gas Pipeline
CATEGORY: NETWORK INTEGRITY
ICPTT 2012 - 2012 International Conference on Pipelines and Trenchless Technology
The Application of a Non-Linear Model for Evaluating the External Corrosion Protection of a Gas Pipeline
Shaohui Jia 1,2
jiashaohui@petrochina.com.cn
1 China University of Geosciences (Beijing), School of the Earth Sciences and Resources, Beijing 100083, China.
2 PetroChina Pipeline R&D Center, 51 Jinguang Road, Langfang, Hebei, 065000, China.
ABSTRACT
Since the majority of pipelines in China are required to be installed underground, external corrosion becomes a major threat to their useful life. The factors affecting the likelihood and severity of external corrosion of buried pipelines includes soil corrosivity, coatings, presence of moisture (e.g., river crossing), electrical fields, cathodic protection system, coatings, etc. In order to help understand the potential impact of this problem, , a survey of a 70 km gas pipeline was conducted, including measurements of soil corrosivity, soil resistivity, stray electrical currents, IR drop, depth of cover, coating integrity, and the effectiveness of cathodic protection.
Additional information was collected regarding interference potential by PCM(Pipeline Current Mapper), CIPS (Closed Interval Potential Survey) and DCVG (Direct Current Voltage Gradient) techniques. The collected information was integrated into a database, which was used to build a non-linear model using the SVM (Support Vector Machine) method. By investigating the non-linear relationship among these factors with respect to their influence on the external corrosion of pipelines, it is possible to predict the most likely locations of external corrosion along other pipelines. The model was applied to another (50 km) pipeline and the results indicate the method is accurate and efficient.
Free Full Text Source: ftp://gsd.asce.org/ICPTT%202012%20Proceedings/ICPTT%20Proceedings%202012%20PDF%20071212/Draft_20094_V2.pdf
ICPTT 2012 - 2012 International Conference on Pipelines and Trenchless Technology
The Application of a Non-Linear Model for Evaluating the External Corrosion Protection of a Gas Pipeline
Shaohui Jia 1,2
jiashaohui@petrochina.com.cn
1 China University of Geosciences (Beijing), School of the Earth Sciences and Resources, Beijing 100083, China.
2 PetroChina Pipeline R&D Center, 51 Jinguang Road, Langfang, Hebei, 065000, China.
ABSTRACT
Since the majority of pipelines in China are required to be installed underground, external corrosion becomes a major threat to their useful life. The factors affecting the likelihood and severity of external corrosion of buried pipelines includes soil corrosivity, coatings, presence of moisture (e.g., river crossing), electrical fields, cathodic protection system, coatings, etc. In order to help understand the potential impact of this problem, , a survey of a 70 km gas pipeline was conducted, including measurements of soil corrosivity, soil resistivity, stray electrical currents, IR drop, depth of cover, coating integrity, and the effectiveness of cathodic protection.
Additional information was collected regarding interference potential by PCM(Pipeline Current Mapper), CIPS (Closed Interval Potential Survey) and DCVG (Direct Current Voltage Gradient) techniques. The collected information was integrated into a database, which was used to build a non-linear model using the SVM (Support Vector Machine) method. By investigating the non-linear relationship among these factors with respect to their influence on the external corrosion of pipelines, it is possible to predict the most likely locations of external corrosion along other pipelines. The model was applied to another (50 km) pipeline and the results indicate the method is accurate and efficient.
Free Full Text Source: ftp://gsd.asce.org/ICPTT%202012%20Proceedings/ICPTT%20Proceedings%202012%20PDF%20071212/Draft_20094_V2.pdf
Corrosion Detection in ‘U’ Bend Oil Pipelines Based on Fuzzy Implementation
CATEGORY: NETWORK INTEGRITY
European Journal of Scientific Research, Vol.77 No.2 (2012), pp.199-204
Corrosion Detection in ‘U’ Bend Oil Pipelines Based on Fuzzy Implementation
N. Ramkumar
ram_trichy12@yahoo.co.in
hirusakthimurugan@rediffmail.com
Research Scholar Sathyabama University India
Thirusakthimurugan Associate Professor Pondicherry Engineering College India
Abstract
Transmission of oil in pipelines is an important part of national energy transportation infrastructure vital to the national economy. Because these pipelines are operated at high pressure, pipeline failure can cause severe damage to human health and property and interruption of oil supplies. To ensure the continued safe operation of transmission of oil pipelines, periodic assessment of the integrity of the pipelines is necessary together with implementation of appropriate maintenance measures. Transmissions of oil pipelines are mostly buried.
To protect them from corrosion, most pipelines have protective coatings and cathodic protection systems that limit the potential for external corrosion. Despite these protective systems, internal and external corrosion and stress corrosion cracking occur in the pipelines with aging.
Multi-Sensor Information Fusion
Multi-sensor information fusion [2] are mainly comprised of some methods that is Bayesian estimation, Kalman filtering, DS evidential reasoning, fuzzy reasoning and neural network and so on [1]. These theories and methods have their own strengths and limitations, which are applied to different levels of integration, with a view to meet the specific requirements of the application of background. The state of pipeline has a strong ambiguity itself, for example, there are no clear boundaries among security status, Normal (mild corrosion), slight (moderate corrosion), and danger status (severe corrosion) [7]. So fuzzy classification method is adopted to discern them [2]. Fuzzy set theory and information fusion technology [1] are combined to resolve the disadvantage that traditional detection method is lack of a large quantity of information loss. It can play their respective advantages and make up for their disadvantages effectively.
Free Full Text Source: http://www.europeanjournalofscientificresearch.com/ISSUES/EJSR_77_2_05.pdf
European Journal of Scientific Research, Vol.77 No.2 (2012), pp.199-204
Corrosion Detection in ‘U’ Bend Oil Pipelines Based on Fuzzy Implementation
N. Ramkumar
ram_trichy12@yahoo.co.in
hirusakthimurugan@rediffmail.com
Research Scholar Sathyabama University India
Thirusakthimurugan Associate Professor Pondicherry Engineering College India
Abstract
Transmission of oil in pipelines is an important part of national energy transportation infrastructure vital to the national economy. Because these pipelines are operated at high pressure, pipeline failure can cause severe damage to human health and property and interruption of oil supplies. To ensure the continued safe operation of transmission of oil pipelines, periodic assessment of the integrity of the pipelines is necessary together with implementation of appropriate maintenance measures. Transmissions of oil pipelines are mostly buried.
To protect them from corrosion, most pipelines have protective coatings and cathodic protection systems that limit the potential for external corrosion. Despite these protective systems, internal and external corrosion and stress corrosion cracking occur in the pipelines with aging.
Multi-Sensor Information Fusion
Multi-sensor information fusion [2] are mainly comprised of some methods that is Bayesian estimation, Kalman filtering, DS evidential reasoning, fuzzy reasoning and neural network and so on [1]. These theories and methods have their own strengths and limitations, which are applied to different levels of integration, with a view to meet the specific requirements of the application of background. The state of pipeline has a strong ambiguity itself, for example, there are no clear boundaries among security status, Normal (mild corrosion), slight (moderate corrosion), and danger status (severe corrosion) [7]. So fuzzy classification method is adopted to discern them [2]. Fuzzy set theory and information fusion technology [1] are combined to resolve the disadvantage that traditional detection method is lack of a large quantity of information loss. It can play their respective advantages and make up for their disadvantages effectively.
Free Full Text Source: http://www.europeanjournalofscientificresearch.com/ISSUES/EJSR_77_2_05.pdf
Sunday, April 22, 2012
Development of approach for reliability assessment of pipeline network systems
Applied Energy, Volume 94, June 2012, Pages
22–33
Development of approach for reliability assessment of pipeline network systems
Sigitas Rimkevicius, Algirdas Kaliatka, Mindaugas Valincius, , Gintautas Dundulis, Remigijus Janulionis, Albertas Grybenas, Inga Zutautaite
Lithuanian Energy Institute, Breslaujos Str. 3, LT-44403 Kaunas, Lithuania
Abstract
Authors develop a common scientific methodology for the assessment of reliability of the pipeline network energy systems. The developed methodology is applicable for district heating, gas and oil supply networks.
The methodology includes three types of analyses: probabilistic mathematical, deterministic thermal–hydraulic and deterministic-probabilistic structural integrity analyses. As a pilot study, the application of the developed methodology for the analysis of Kaunas (Lithuania) district heating system was performed.
Full Text Source (Subscription or Fee): http://www.sciencedirect.com/science/article/pii/S0306261912000219
Development of approach for reliability assessment of pipeline network systems
Sigitas Rimkevicius, Algirdas Kaliatka, Mindaugas Valincius, , Gintautas Dundulis, Remigijus Janulionis, Albertas Grybenas, Inga Zutautaite
Lithuanian Energy Institute, Breslaujos Str. 3, LT-44403 Kaunas, Lithuania
Abstract
Authors develop a common scientific methodology for the assessment of reliability of the pipeline network energy systems. The developed methodology is applicable for district heating, gas and oil supply networks.
The methodology includes three types of analyses: probabilistic mathematical, deterministic thermal–hydraulic and deterministic-probabilistic structural integrity analyses. As a pilot study, the application of the developed methodology for the analysis of Kaunas (Lithuania) district heating system was performed.
Full Text Source (Subscription or Fee): http://www.sciencedirect.com/science/article/pii/S0306261912000219
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