February 2020 Vol. 2

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PPN- The Leading Source of Industry News on Polymer Pipes and Plastic Pipe Failure


NEWSMAKERS:  * Aquatherm * Caldertech * CertMark  * PPI * Star Piping * Uponor  

Why Do Aquatherm Pipes Fail? (by Community Engineering Services)
https://www.coengineers.com/why-do-aquatherm-pipes-fail/

Water Treatment Chemicals Cause Failure of 21 Miles of HDPE Pipes in Ohio, USA (Breaking News)
https://www.youtube.com/watch?v=bPHNBL_A8go

HDPE Piping and Poly Welding Meet New Requirements for Lithium Plant Gas Supply
https://utilitymagazine.com.au/meeting-the-new-requirement-for-poly-welding-at-kemerton-lithium-plant-gas-supply/

Recent changes to the AS/NZS 4645:2018 call for gas distribution networks to apply stricter guidelines 
that include the use of automatic butt welding machines for HDPE pipelines 225mm and above or pipelines operating above 700kPa
https://utilitymagazine.com.au/meeting-the-new-requirement-for-poly-welding-at-kemerton-lithium-plant-gas-supply/

Stress Analysis of GRP / GRE / FRP Piping
http://cloud.excelplas.com/s/ljACjlVBT7lf2oO#pdfviewer

CertMark Issues Important Notice – AS/NZS 4130 Polyethylene (PE) pipes for pressure applications – January 2020
https://certmark.org/articles/2020/01/important-notice-as-nzs-4130-polyethylene-pe-pipes-for-pressure-applications-january-2020/

Aust Government Awarding $3 Mill Grant for Smart Linings for Pipe
https://www.business.gov.au/Grants-and-Programs/Cooperative-Research-Centres-Projects-CRCP-Grants/CRC-Projects-selection-round-outcomes

Australia’s State-of-the-Art Plastic Pipe Testing Laboratory
ExcelPlas Laboratories provides a comprehensive plastic pipe & joint testing service and is equipped with a state of the art laboratory to test a range of polymer materials including polyethylene and polypropylene. ExcelPlas can carry out testing on plastic tube and pipe ranging in wall thickness from 3 mm to 80 mm. ExcelPlas Laboratories provide a comprehensive service to Industrial & commercial companies, environmental consultants, Government bodies and local Authority customers throughout Australia & NZ. All testing is carried and out in accordance with ISO & ASTM methods and is fully accredited to ISO 17025 by NATA.
http://www.excelplas.com/

Identification of Factors Influencing Sustainability of Buried Continuous HDPE and PVC Pipelines
https://www.mdpi.com/2071-1050/12/3/960/pdf

Technical Basis for Maximum Allowable Scratch Depths in HDPE Pipes Made with High PENT Values by Prabhat Krishnaswamy
https://www.4spe.org/files/events/2020/ANTEC/ANTEC2020_TechSessions_v1.pdf

Thermal Derating Factors for Fused PVC by Tom Marti
https://www.4spe.org/files/events/2020/ANTEC/ANTEC2020_TechSessions_v1.pdf

The Complexity of Service Life Prediction for Polyolefins in Chlorinated Disinfectants by Karin Jacobson
https://www.4spe.org/files/events/2020/ANTEC/ANTEC2020_TechSessions_v1.pdf

Tailoring Composite Architecture to Improve the Toughness of Pipe Grade Materials by Johannes Wiener
https://www.4spe.org/files/events/2020/ANTEC/ANTEC2020_TechSessions_v1.pdf

Transition from Ductile Failure to Brittle Fracture of High Density Polyethylene Under Creep Loading by Na Tan
https://www.4spe.org/files/events/2020/ANTEC/ANTEC2020_TechSessions_v1.pdf

Morphology and Mechanical Performance of Pipe Grade HDPE Exposed to Chlorinated Water by Susan Mantell
https://www.4spe.org/files/events/2020/ANTEC/ANTEC2020_TechSessions_v1.pdf

Degradation of CPVC Sprinkler Piping Material by Simulated Sunlight and UV-B Light by Rajni Madan
https://www.4spe.org/files/events/2020/ANTEC/ANTEC2020_TechSessions_v1.pdf

STAR Piping Systems – Back to the Roots for Further Growth
http://starpipingsystems.de/en/company/news/news/30-back-to-the-roots-for-further-growth/

TN-62 on CPVC for Commercial Applications (New)
https://plasticpipe.org/pdf/bcd-tn-62-announcement.pdf

Polyethylene Pipeline Integrity Management (PIM) is the cradle-to-grave approach of understanding and operating pipelines in a safe, reliable manner
PIM programs are run by ExcelPlas pipeline owner-operators that consider all stages of the pipeline life cycle, from conception, to engineering and design, construction, operation, inspection, and finally to repair/replacement when necessary
https://www.excelplas.com/products-tested/plastic-pipes/

Uponor Pipe Financial Results (Declassified)
https://platform.goodmood.fi/goodmood/uponor/financial-results-briefing-1-12-2019

Seismic Fragility of Pipe Rack—Piping Systems Considering Soil–Structure Interaction
https://link.springer.com/article/10.1007/s10518-020-00797-0

Australian Poly Solutions Specialises in HDPE Pipe Fusion Welding and Hydrostatic Testing Services with Knowhow and Experience you can rely on
https://www.aussiepoly.com.au/

RITMO: APP – SET & GO! PRO Butt Fusion for Pressure Pipe
https://www.ritmo.it/en/butt-fusion-for-pressure-pipe/app-set-go-pro/
Video: https://youtu.be/YP4GmmBdufU


ExcelPlas Labs Pipe Failure Investigations
ExcelPlas Labs have created a new benchmark in failure analysis of HDPE, PP-R, PB and PEX pipes in addition to PVC &  CPVC pipes as well as composite GRP and GRE pipes.  When a plastic pipeline fails to perform as intended, our team can determine the root cause of failure (e.g.  oxidative failure, chemical failure, creep failure, over-stress failure, fatigue failure, design failure, etc).  ExcelPlas are experienced with all plastic piping failure modes and mechanisms including Slow Crack Growth (SCG) Rapid Crack Propagation (RCP), Environmental Stress Crack Resistance (ESCR), Oxidative Stress Cracking (OSC), cyclic fatigue, manufacturing defects, and polymer material problems.
http://www.excelplas.com/

ExcelPlas Strain Hardening Test (SHT) for HDPE Pipes
The SHT in accordance with ISO 18488 is a relatively new, but excellent way to obtain a rapid indication of the Stress Crack Growth (SCG) resistance of your piping material. This tensile test performed at 80°C has become in just a few years the new standard for Batch Release Testing (BRT). And not without reason.  The test requires only a very small amount of material, the results are very reliable with a very low inter-laboratory scatter and the results are available within a few days, regardless of the PE grade. The SHT is usually performed on resin material but it can also be performed on samples taken directly from pipes or sheets. As accredited lab, EXCELPLAS is happy to discuss the possibilities with you, whether it is for BRT, benchmarking, quality control of your (high performing) PE grade or for polymer compliance/ validation.
http://www.excelplas.com/

Australian Plastic Pipe Testing Laboratory
ExcelPlas Laboratories provides a comprehensive plastic pipe joint testing service and is equipped with a state of the art laboratory to test a range of polymer materials including polyethylene and polypropylene. ExcelPlas can carry out testing on plastic tube and pipe ranging in wall thickness from 3 mm to 80 mm. ExcelPlas Laboratories provide a comprehensive service to Industrial & commercial companies, environmental consultants, Government bodies and local Authority customers throughout Australia & NZ. All testing is carried and out in accordance with ISO & ASTM methods and is fully accredited to ISO 17025 by NATA.
http://www.excelplas.com/

Australia’s Plastic Pipe Testing Laboratory
ExcelPlas Laboratories provides a comprehensive plastic pipe joint testing service and is equipped with a state of the art laboratory to test a range of polymer materials including polyethylene and polypropylene. ExcelPlas can carry out testing on plastic tube and pipe ranging in wall thickness from 20mm to 1200mm. ExcelPlas Laboratories provide a comprehensive service to Industrial & commercial companies, environmental consultants, Government bodies and local Authority customers throughout Australia and Asia. 
All testing is carried and out in accordance with ASTM, ISO & WIS methods and is fully accredited to ISO 17025 by NATA.
• Butt Fusion Weld Testing
• Weld Testing
• Testing of Electro-fusion Welds
• Tear on saddle joints
• Crush De-cohesion of Electro-fusion welds
• Polymer & Plastics Identification
• Chemical & Thermal Testing
• Site Audits
http://www.excelplas.com/

ExcelPlas – the Australian Pipes & Fittings Testing Laboratory

  • Accredited to ISO 17025 by the National Association of Testing Authorities (NATA) Australia, and is Australia’s largest laboratory dedicated for the testing of plastic pipes and fittings to various Standards which include Australian, European and International Standards.
  • The staff employed at the laboratory have a combined experience of more than 85 years within the plastics industry specifically with manufacturing, quality control and the research and development of plastic piping systems including HDPE, PEX, PP-R, PVC, U-PVC, M-PVC, O-PVC, ABS, GRP, GRE and PB.
  • Services provided include conformance testing, compliance testing, batch release testing, root cause analysis for field failures and non-destructive testing of samples.
  • http://www.excelplas.com/

ExcelPlas Lab Specialising in HDPE Pipe Condition Monitoring, Failure Analysis and Testing
In the event of a HDPE buttweld or electrofusion weld failing during initial testing, or in service, we can conduct investigations to assist in identifying the root cause of the failure.
This service also extends to the premature failure of the pipe or fitting itself.
http://www.excelplas.com/plastic-pipes

ExcelPlas Pipe Testing is a Leader in the Field of Polyethylene (PE) and High-Density Polyethylene (HDPE) Testing
ExcelPlas is accredited with the National Association of Testing Authorities (NATA) for butt weld tests, bend and tensile tests, peel decohesion tests on electro fusion sockets and failure mode determination
http://www.polypipetesting.com.au/butt-fusion-welds/

New UHMWPE Pipe for Tailing Offers Greater Than 4X the Abrasion Resistance of PE100 (Australia wide)
http://slurrypipes.com.au/

ExcelPlas Poly Pipe Weld Inspection Lists Top 7 Causes of Weld Failure:
• Lack of scraping
• Inaccurate scraping
• Contamination from dirt, water, oil or clays
• Lack of Paralell-ness of fusion faces
• Misalignment of surfaces
• Time, temperature and pressure deviations
• Not adhering to cool times

We have extensive experience in inspection of poly pipe welds for assuring welded joint quality.  Direct Poly Pipe Inspection ensures that operators are following the proven welding procedure; this reduces the occurrences of operational errors which lead to defects such as inclusions, lack of fusion (LoF), porosity and misalignment.
More information, contact john@excelplas.com

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