Various approaches to the improvement of polyethylene piping construction quality in osaka gas (2016)

 

Papers # 2016 Berlin

Osaka Gas has carried out the production, supply, and sale of gas since 1905 and has distributed gas to 7,200,000 customers. The piping used for distribution was originally steel and cast iron pipes, but we have been adopting the use of polyethylene piping for low pressure distribution since 1980, and have to date laid approximately 15,000km of pipe.

Regarding the need to continue using this polyethylene piping indefinitely without having to replace it, we are engaging in various initiatives for the purpose of improving fusion quality, in combination with strengthening our quality controls for polyethylene piping materials. For instance, we carry out specialized technical skills training based on the Osaka Gas system of qualifications authorization for the workers at our contracted construction companies, quality inspections of fusion-joined sections of laid polyethylene pipe, and also the development of new fusion techniques through our technology development division. Moreover, we perform yearly evaluations of our contractors based on such factors as the results of our quality inspections of fusionjoined sections, then increase or decrease the quantity of work assigned to each company according to the outcome. We are establishing as one system these initiatives to improve fusion quality and this mechanism we have formulated in connection with determining the work volume to be granted to our construction companies

In addition, we are maintaining a high standard of safety management and security by fortifying our controls for the prevention of breakage that may occur in the performance of other work after the time polyethylene pipe is laid.

This report introduces the various efforts we are undertaking toward the improvement of construction quality regarding the laying of our polyethylene pipe.

Related keywords : quality, system, qualifications authorization, quality inspections, technical development, safety management.
Please note that the whole article content is available on PPCA website onlySource : 2016 Berlin


Related papers

China plastic pipe industry - Technical progress and quality improvement

Author(s) : Wang Zhanjie 2018 Las-Vegas

As the largest production country, with numerous applications, China’s plastic pipe industry is developing steadily to meet the demand and needs. This paper analyzes the current situation and barriers, and proposes the breakthroughs to achieve a sustainable, stable and healthy development of China’s plastic pipe...

CPVC application in the fire sprinkler system in China

Author(s) : Jiang Tongjun, Fu Zhimin, Yang Yuanjin 2018 Las-Vegas

This paper introduces the application of CPVC pipe in fire sprinkler systems in China. The advantages and differences of CPVC pipe versus to galvanized steel pipes, the improvement of related laws and regulations and the market outlook are discussed. The overall result is a change in the upstream and downstream...

Development status and technical requirements of composite insulating plastic pipe

Author(s) : HU Fa, LI Yue, GAO Yuanjie, ZHE Dongmei, WEI Ruoqi 2018 Las-Vegas

This paper expounds the development status of composite insulating pipe in the heating and chemical fields from the aspects of materials, structure and application. Combined with the relevant standards and technical requirements, the performance advantages and the key evaluation methods such as axial shear strength,...

Innovative millimeter waves technology for measuring diameter, ovality, wall thickness, and sagging of large plastic pipes

Author(s) : Christian Schalich 2018 Las-Vegas

This paper introduces a new technology based on millimeter waves. It provides a noncontact, non-destructive, online measurement of inner and outer diameter, ovality, wall thicknesses, and sagging (sagging of the melt during solidification at a too high viscosity) of large plastic pipes during the extrusion...

Introduction of large dia profiled PE/PP pipes for innovative piped distribution network (PDN) for irrigation in India

Author(s) : C. B. Dandekar 2018 Las-Vegas

Agriculture is the major occupation practiced in India, and irrigation is therefore a vital part of the entire water budget of the country. India possesses only 4% of the total world’s fresh water resource, of which, more than 80% is consumed solely in the Agriculture Sector (Dhawan, 2017). Canal based distribution...

Laboratory device for checking the thermal energy delivered by the electrofusion fittings

Author(s) : Dominique GUEUGNAUT, Adil BOUJLAL, Aymeric LOPITAUX, Bertrand SEVRE 2018 Las-Vegas

A special concept has been developed by GRTgaz Research and Innovation Center for Energy (RICE) for temperature mapping at the interface of an electrowelded assembly.The technical solution consists of a tubular piece in place of the real PE pipe, made of a non-weldable polymer with thermal parameters close to those of...

Large pressure pipe system – Fully PE100

Author(s) : Sverre Tragethon, Martin Andersson 2018 Las-Vegas

Global mega trends push for investments in sewage treatment capacity & efficiency. A trend is to go for central regional treatment sites, typically remotely located from dense populated cities. This calls for high capacity pressure sewage transmission pipelines. Reliable operation is of course of paramount...

Polyolefin pipes in the middle east- today and tomorrow

Author(s) : Robert Lawrence, Mohana Murali 2018 Las-Vegas

The paper covers the growth of the polyethylene pipe sector in the Middle East from the 90s to the present. The initial slow uptake was related to ignorance of the material properties from the end users through to designers and installers. Recently the Middle East has become a world leader in the use of ever larger...

The world's first class 3 safety related nuclear PE4710 piping project - 10 year review

Author(s) : Lonnie Corley, Dane Chang, Harvey Svetlik, Matt Brandes, Thomas Musto, Frank Schaaf, David Fink 2018 Las-Vegas

This paper presents a brief overview of a challenging project at the Callaway Nuclear Power Plant where HDPE was utilized to replace degraded steel buried piping in a Safety Related water system. Callaway was the first Nuclear Power plant to obtain NRC approval and successfully place the HDPE piping system into...

Various approaches to the improvement of polyethylene piping construction quality in osaka gas (2018)

Author(s) : Katsutaka Nakagami, Takahiro Kasatani 2018 Las-Vegas

Osaka Gas improves various approaches to the improvement of polyethylene piping construction quality and executes the approaches. As a result of that, polyethylene pipes in Osaka Gas maintain high-quality and withstand the earthquakes. This paper shows these methods and performance against earthquakes in Japan. In...

Advancing of Plastic Corrugated Pipe Systems in India in Last Two Decades

Author(s) : C.B. Dandekar 2016 Berlin

Plastic Corrugated Piping System (PCPS) was introduced in India in 2001, much later than the western world started using it for various applications. It received a mixed response from the Govt. Agencies, but was well accepted by the market, actual users and standardizing institutions. PCPS finds applications in...

Asset management of polyethylene gas networks

Author(s) : Ian Aldridge, Declan Robinson, Dave Smart, Chris Reed, Martyn, Greig, Trevor Stafford, David Christie-Lowe, Alec Erskine 2016 Berlin

For the UK polyethylene (PE) gas pipe network, the first installations now exceed 40 years in the ground, with an original design life of 50 years. It was thus timely to review the current condition and performance history of these first generation PE materials. A major 4 year project was started in 2010 to examine...

Chairman’s review of the development process for U.S. pipe standard awwa/ansi C906-15

Author(s) : John Fishburne 2016 Berlin

The United States water industry relies heavily on American Water Works Association (AWWA) Standards publications for product ratings, design parameters, and guidance on installation methodologies. In September 2015, AWWA published Standard C906-15 covering 4” – 65” polyethylene pressure pipe for waterworks...

Corrugated polyethylene pipe used in mining applications, their compliance with specifications and anticipated design life

Author(s) : Jim Goddard, Mario Paredes 2016 Berlin

Samples of polyethylene pipe supplied to mining projects throughout the Americas were selected and tested for compliance with existing ASTM specifications. Estimated service life of these pipe products in mining applications are made based on the laboratory tests required in the ASTM specifications. Anticipated...

New en standard PVC-Oriented plastic piping systems

Author(s) : HENK MEERMAN 2016 Berlin

PVC-Oriented is the second generation of PVC-Unplasticized. Molecular orientation of PVC-U pipes results in a strong improvement of the physical and mechanical properties. The new draft European standard for PVCoriented plastic piping systems is based on the ISO 16422 “Pipes and joints made out of oriented...

Polyethylene pipes in hot climates - Two decades of technical challenges

Author(s) : Mohana Murali 2016 Berlin

Polyethylene pipes have been used for over half a century in Europe and North America and just over two decades in the Middle East. A recurring misgiving amongst first time users is the behavior of the pipes in the extreme climatic conditions such as the Arabian Gulf. High temperatures do exist but there are...

Reaching new frontiers and maintaining momentum in the plastics piping market

Author(s) : White G. Jee 2016 Berlin

The Lake Charles Chemicals Project (LCCP) is a new chemicals plant facility and as a result, corrosion and compatibility as well as cost play a very important role in the selection of piping components. For the purpose of this case study, the focus will be the high density polyethylene (HDPE) piping system used in the...

Residual quality of excavated UPVC gas and water distribution pipelines

Author(s) : Frans Scholten, Ernst van der Stok, Britta Gerets, Mirko Wenzel, Mike Boege 2016 Berlin

The current condition of 35-50 years old uPVC main (110 mm) and service (32 mm) pipes for gas and water distribution was assessed. From 27 excavation sites in total about 400 segments of 1.2 meters length each were tested using many techniques. The K-value (average molecular weight) of the PVC, the degree of gelation...

Review of quality, application and development for PE pressure pipe in China

Author(s) : ZhanJie Wang, Cindy Wang 2016 Berlin

With the offers of whole value chain people, the application of PE pressure pipes has been increased widely in China since 1990’s, especially for gas pipes. Compounding PE material ensures the qualified pipes being used for infrastructure projects. There are some Innovation products from pipe producers to enlarge...

The remaining quality of the PVC gas grid - Results of 10 years of on-going research

Author(s) : J. Weller, R.J.M. Hermkens, E.J.W. van der Stok 2016 Berlin

To prevent an enormous surge in the replacement costs of the Dutch PVC gas distribution grid a so-called Exit Assessment programme was started in 2004. This programme determines the actual quality of old excavated PVC-U and PVC-Hi pipes using a tensile-impact test at temperatures varying from -25°C to +47,5°C,...

Members of the Association

BOREALISBOROUGEFormosa Plastics CorporationINEOS O&PIRPCKazanorgsintez PJSCKorea Petrochemical IND. Co., LTD (KPIC)LyondellBasellPetroChina Dushanzi Petrochemical CompanyPRIME POLYMERSABICSCG Chemicals & Thai PolyethyleneSinopecTASNEE
TOP