January 2022 Vol. 1

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

Global News on Plastic Piping and Fittings


NEWSMAKERS:  * AUSPEX * Davis-Standard * ExcelPlas * Failure Analysis * GF Piping * INEOS * IPLEX * PE100 * PEX * PPI * PPN * PP-R * Rehau * RWC * Univation * Uponor * Wavin * WL Plastics

INDUSTRY NEWS

INEOS Company WL Plastics Acquires Pipe Extrusion Assets of Charter Plastics
https://www.plasticsnews.com/news/wl-plastics-acquires-pipe-extrusion-assets-charter-plastics

INEOS’ U.S. Subsidiary Finalizes Acquisition of PE Pipe Manufacturer
https://www.chemengonline.com/ineos-u-s-subsidiary-finalizes-acquisition-of-pe-pipe-manufacturer/

Uponor PEX Lawsuit Alleges the Uponor PEX Pipe Contains Manufacturing Defects that Cause Premature Damage, Degradation, Deterioration and Failure
https://www.classaction.org/media/matzdorf-et-al-v-uponor-inc-et-al.pdf

Uponor PEX Pipe Lawsuit Explained
Apparently, Uponor used a process of heating their pipe so the red and blue coloured layer would adhere to the surface of the pipe. Unfortunately, it appears this process is allegedly causing microfractures in the pipe. Uponor has a line of clear pipe with red or blue writing printed on it and that is not a part of this suit.
https://www.burgsimpson.com/firm_news/construction-defect-lawsuit-uponer-inc/

Iplex Pipelines Leads Innovation to Overcome Ageing Infrastructure Challenges
https://www.trenchless-australasia.com/2021/12/21/iplex-leads-innovation-to-overcome-ageing-infrastructure-challenges/

AUSPEX (RWC) Publishes New Technical Manual for PEX Pipe [PDF]
https://www.auspex.com.au/wp-content/uploads/2021/12/Auspex_Water_Manual_Web_1221_V1.pdf

PPI Publishes Checklist for PVC Pipe Compounds
https://plasticpipe.org/common/Uploaded files/1-PPI/Hydrostatic Stress Board/doc/PPI TR4-checklist-Vinyl compounds.doc

Univation Patent New Bimodal HDPE for Pressure Pipe Applications
https://www.freepatentsonline.com/20210380737.pdf

Wavin’s Robust PE 100-RC Pipes
https://m.youtube.com/watch?v=eIHQ4CHJcXA

Massive Gas Explosion Leaving Portsmouth Family ‘Seconds from Death’ Were Result of ‘Failed’ HDPE Gas Pipe
https://www.portsmouth.co.uk/news/people/massive-gas-explosions-leaving-portsmouth-family-seconds-from-death-were-result-of-failed-gas-pipe-3510833

US and EU Plastic Pipe Extruders Reinforce Messaging on Sustainability, Infrastructure Improvement 
https://www.plasticstoday.com/extrusion-pipe-profile/us-and-eu-plastic-pipe-extruders-reinforce-messaging-sustainability

Davis-Standard Kicks off Energy-Efficient Extruder for HDPE Pipe Extrusion
https://www.plasticsmachinerymanufacturing.com/extrusion/article/21249194/davisstandard-kicks-off-energyefficient-extruder

Hydrostatic Testing Equipment for Pressure Testing HDPE, PEX and PP-R Pipes
https://sciteq.com/product/eco-line-internal-pressure-test/

NEW RESEARCH

Quality Improvement and Productivity Enhancement of a Single Screw HDPE Pipe Extrusion Machine: A Case Study
https://www.sciencedirect.com/science/article/pii/S2214785321077087

Super HDPE Nanocomposites Pipes with Reduced Graphene Oxide: Hardness, Impact and Tribological Properties
https://www.sciencedirect.com/science/article/abs/pii/S0032386121010983

Investigation of Microplastics Release Behaviour from Ozone-exposed Plastic Pipe Materials
https://www.sciencedirect.com/science/article/abs/pii/S026974912102340X

Time-Dependent Analysis of Buried High-Density Polyethylene (PE100) Pipelines with a Scratch Defect Subjected to Impact Loading
https://www.sciencedirect.com/science/article/abs/pii/S0308016121002982

Deformation Characteristics of Buried HDPE Transfer Lines in Trenches Under the Effect of Temperature
http://www.redae.uc.cl/index.php/RDLC/article/view/27781

Insulated PEX-Pipe Loops for De-icing on Existing Bridge Deck using Geothermal Energy: Laboratory Tests, Modelling, and Performance Analyses
https://www.sciencedirect.com/science/article/abs/pii/S1359431121014472

Effect of Sand Grain Distribution on Resin Consumption and Mechanical Performance of GRP Pipes
http://www.saujs.sakarya.edu.tr/en/download/article-file/1572030

Risk Assessment of Glass Reinforced Plastic(GRP) Pipe Installation
http://iranpipeco.com/wp-content/uploads/2021/08/2597.pdf

PLASTIC PIPE FAILURE ANALYSIS

Failure Analysis of Plastic Pipes
If you are looking for an expert witness for your case involving plastic pipe failure analysis, then you can’t beat the team at ExcelPlas Consulting.  Our team is setting a new standard for excellence in failure analysis of plastic articles but especially plastic pipe.  For plastic pipe, this includes HDPE, PVC & CPVC pipe as well as other plastic piping systems like Hobas GRP pipe, PP-R Pipe, and spoolable composite pipe.  When a plastic pipeline fails to perform as intended, our team can determine the root cause (chemical failure, oxidative failure, creep failure, overstress failure, fatigue failure, design failure, etc).   We are experts in HDPE water pipe failures, CPVC sprinkler pipe failure, PVC pipe failure analysis, and PP-R Oxidation/Degradation investigations.
https://www.excelplas.com/wp-content/uploads/2020/01/Excelplas-A4-Brochure-4pp-Plastic-Pipe-Testing-NTs.pdf

ExcelPlas Investigating Poly Pipe Failures
Through failure analysis & forensic chemistry, we help clients improve product performance, increase profits, & resolve product liability claims with plastic pipes and fittings.
We are dedicated to unmatched excellence in failure analysis, investigative chemistry, material testing, and expert witnessing for plastics, polymers, and composites.
With over 25 years of investigative experience, the staff at ExcelPlas are uniquely positioned to help clients resolve the most challenging performance and processing issues related to materials and plastic pipes and fittings.
https://www.excelplas.com/contact-us/

Cautionary Warning:  Some PEX Piping is Prone to Development of Cracks Due to Early Oxidation
ExcelPlas Labs have developed a three-step testing program to detect the early failure of PEX pipes and their expected service lifetime.
The 3 Step Testing is based on:

  1. Oxidative Induction Time (OIT) testing to determine the residual level of oxidative stability (i.e. thermal stability)
  2. Quantitative Additive Analysis (QAA) to determine the type and level of protective antioxidants and stabilizer present.
  3. Scanning Microscopy on the inner surface after bend back to image developing microcracks

Samples of PEX pipe just 10 cm long are needed for the analysis.  7 Day turnaround on test reports.
https://www.excelplas.com/wp-content/uploads/2020/01/Excelplas-A4-Brochure-4pp-Plastic-Pipe-Testing-NTs.pdf

MORE POLY PIPE NEWS

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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/

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 3mm 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 the 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.
For more information, contact john@excelplas.com

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