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September 5, 2022
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A COST BENEFIT ANALYSIS OF PVC PIPES RECYCLING

MARANGONI

# 2021 Amsterdam

The quality of infrastructures is a key driver for maximizing the performance of the utilities networks and minimizing the environmental impacts associated with their operation. The water and sewer pipes are key network elements to guarantee a satisfactory service to the citizens. Their end-of-life management is an essential driver for sustainability. In line with the principles of the circular economy, the recycling of pipes after dismantling is an important lever to reduce the overall environmental impacts. Being able to be mechanically recycled several times without any impact on their long term performances, the PVC pipes bring numerous benefits when they are recovered and recycled. The objective of this study is to estimate, in monetary terms, the benefits of PVC pipes recycling, using the Cost Benefit Analysis methodology. The financial analysis considers PVC pipes, as used in water and sewer networks by utilities in Germany and Italy. On one hand, the analysis considers for each country, the costs of recovering, separating and treating PVC pipes at their end of life. On the other hand, the study accounts for the pipe waste disposal savings, the value of the recovered pipe material, the carbon emission savings, the positive economic and employment fall-outs from the recycling business.

https://www.pe100plus.com/PPCA/A-COST-BENEFIT-ANALYSIS-OF-PVC-PIPES-RECYCLING-p1749.html

Agustus 29, 2022
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EFFECT OF CHLORINATED WATER ON THE FATIGUE CRACK GROWTH RESISTANCE OF POLYETHYLENE COMPOUNDS WITH RECYCLATE CONTENT FOR PIPE APPLICATIONS

Paul J. Freudenthaler, Joerg Fischer, Mathias Eder, Reinhold W. Lang

# 2021 Amsterdam

For controlled water disinfection, typically chlorine is used and preliminary studies demonstrate its aging and crack growth acceleration effects on polyolefin pipe materials [1, 2]. Although the use of recycled plastics is not prohibited in some ISO standards for polyolefin piping systems [3–5], only small amounts are currently used in the European market. This is most likely a result of lacking experience and confidence in recyclates. The purpose of this paper is to gain an insight in the suitability of commercially available post-consumer recyclates, to be used in compounds, for piping applications. Therefore, fatigue properties of polyethylene (PE) pipe grade material with an enhanced resistance to crack growth (PE100-RC), of an injection-molding pipe grade PE80-IM, of a PE-HD post-consumer waste recyclate and of various compounds of PE100-RC and the PE-HD recyclate were tested in water and chlorinated water with a chlorine content of 5 mg/L. To investigate the temperature influence on the local aging effect of chlorine,superimposed fatigue crack growth (FCG) tests [6] were performed at room temperature and at 60 °C. The recyclate showed a higher dependence on temperature and chlorine content than PE100-RC. When comparing fatigue crack growth resistances, a distinct ranking between the PE compounds is possible. With higher amounts of recyclates in the compound, decreasing fatigue crack growth resistances were found. The 25 % recyclate compound performed better in terms of FCG than the tested PE80-IM grade.

article source : https://www.pe100plus.com/PPCA/EFFECT-OF-CHLORINATED-WATER-ON-THE-FATIGUE-CRACK-GROWTH-RESISTANCE-OF-POLYETHYLENE-COMPOUNDS-WITH-RECYCLATE-CONTENT-FOR-PIPE-APPLICATIONS-p1780.html

Agustus 15, 2022
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INTAKE AND DISCHARGE LARGE DIAMETER PIPELINE PROJECT FOR COAL FIRED GENERATION PLANT IN JAPAN

Mitsuaki Tokiyoshi, Yuichi Shibao, Yoshitaka Watanabe, Takeshi Yoshioka, Takashi Oka, Kohei Sasaki

# 2021 Amsterdam

It was common to use those pipelines for Steel in Japan. However Steel pipes have the long standing problems that it has been needed maintenance costs for rust prevention and antifouling property. Therefore it had been carried out the project that large diameter polyethylene pipeline applied for circulating water pipes in 2018. Electric Power Development Co.,Ltd (J-POWER) had been replaced of the existing Unit One and Two combined of coal fired generation plant in Takehara city at Hiroshima Prefecture in Japan. Total lengths of intake water pipeline were taken 131m, operating pressure 0,095MPa applicable to intake water pipelines, and discharge water pipelines were 65m length. It would be provided Profile wall polyethylene pipes by spiral winding method specified JIS K 6780. Pipes diameter/length was given 3.0m DN/ID, 5m each by based on PE80 materials. Those pipes could be customized the suitable structural design what it shall be the best according with specification design on the job site. The fittings are basically welding systems like as Electrofusion, Butt fusion and automatically welding systems, furthermore it can be provided rubber joint system and flange system to consideration for usage, design condition and ground design. To consider internal pressure, fittings of discharge pipeline was automatically welding systems, on the other hand fittings of intake pipeline was rubber joint system due to not internal pressure. The paper will be introduced investigation and research resolution on this project as follows.

_Research for biofouling (PE80, Steel and GRP surface in ocean immersion test. (Under examination)

_Water filling test into hollowed core for sedimentation in the sea

_Research the comparison of the generated stress with structural wall and solid wall

https://www.pe100plus.com/PPCA/INTAKE-AND-DISCHARGE-LARGE-DIAMETER-PIPELINE-PROJECT-FOR-COAL-FIRED-GENERATION-PLANT-IN-JAPAN-p1778.html

Agustus 4, 2022
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INNOVATIVE MILLIMETER WAVE TECHNOLOGY FOR MEASURING THE PIPE WALL THICKNESS EARLY IN THE EXTRUSION PROCESS

Christian Schalich

# 2021 Amsterdam

Plastic pipes for infrastructure and building applications are precisely specified with regards to wall thickness and diameter. Pipe manufacturers use different measuring methods in order to ensure the required dimensional accuracy and maintain a constant high quality. This paper introduces a measuring system based on millimeter wave (radar) technology. It provides a non-contact, non- destructive, online measurement of wall thickness, inner and outer diameter, ovality, inner profile and sagging of plastic pipes during the extrusion process. One or more rotating transceivers continuously send and receive frequency modulated waves to ensure the monitoring of the wall thickness covering 360 degrees of the pipe circumference. The system is typically installed after the first vacuum tank in order to monitor the pre-cooled dimensions of a pipe. Its adaptivity to different materials allows for using this technology on all kinds of pipes made of polyolefines, flourpolymers and PVC in diameter ranges from 90 (optional 60) up to 3,200 mm with a min. wall thicknesses of 3.8 mm. For PVC this technology is able to measure even smaller pipes, starting from diameter 60 mm with a min. wall thickness of only 2.3 mm. The precooled 360° values of the wall thickness and diameter of the pipe are measured in order to evaluate the sagging effect of the material during the cooling process. These values help for a fast centering of the pipes and can automatically be controlled without delay to the minimum permitted nominal value. Due to a patented automatic determination ofthe material related refractive index, the operation of the system is intuitive and easy without any presetting of the material and its characteristics. The paper will outline this technology and the innovations that were developed in close cooperation with the demands of the market. The system as well as its functional principle will be introduced. By using this innovative technology, the start-up process is significantly facilitated and shortened. Thus, the production process is optimized, the highest quality of the pipe ensured and costs are saved. A Return on Investment (ROI) in less than 12 months is usually achieved.

 

https://www.pe100plus.com/PPCA/INNOVATIVE-MILLIMETER-WAVE-TECHNOLOGY-FOR-MEASURING-THE-PIPE-WALL-THICKNESS-EARLY-IN-THE-EXTRUSION-PROCESS-p1743.html

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    PT SHUANGLIN PIPE INDONESIA is a joint venture subsidiary of Zhejiang Shuanglin Environment Co., Ltd. Our factory is located in CIKARANG, Indonesia. The plant covers an area of 4,000 square meters. Our company has introduced advanced production line and a professional production management team. The company mainly produces municipal and residential building water supply and drainage, sewage pipes and complete sets of systems. The product line includes HDPE/PP double-wall corrugated pipe and inspection wells for pipeline connection and other accessories.

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