March 2022 Vol. 3

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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 in Real Time

NEWSMAKERS:  * ADS * Advanced Drainage Systems * Alliance for PE Pipe * Aliaxis * Borouge * ExcelPlas * Failure Analysis * JANA Corporation * JM Eagle * Murphy Pipelines * NIBCO * Ovarro * PEX Pipe Failures * PIPA * PPI * PPN * PP-R * Solvay * Uponor * Vinidex * Worldpoly


JM Eagle, Worldpoly and Murphy Pipeline Contractors (MPC) Deliver One of the World’s Largest HDD HPDE Pipelines (Video)
$65Mill Emergency Design-Build | 1372 mm (54″) Directional Drill of 11 km of HDPE Pipe

A New On-Site Test for Determining and Recording the Quality of Butt Fusion Welding (New Tech)–control-devices/controlpoint-training-and-consultancy/butt-fusion-bead-diagnostic-instrument/

U.S. Government Publishes Hydraulic Manual on Pipe Classifications and Materials Including HDPE and PVC [PDF]

Pipeline Installation Contractor Wanted for Dutch Carbon Capture Usage & Storage Project
The Dutch Porthos Offshore Transport and Storage has issued a tender for the installation of about 20 kilometers of offshore pipeline for what will be one of the largest carbon capture and storage (CCS) projects in the world.

Uponor Renews its Group strategy and Introduces New Financial Targets

Technical Presentation on The Behaviour of Polypropylene Pipes [PDF]

ADS Adds Operation Clean Sweep to Arsenal of Sustainability Tools to Reduce Plastic Resin Loss to Environment

HDPE Pipe Total Solutions Roadshow (26th May 2022)

The Plastics Landscape: Risks and Opportunities Along the Value Chain

Over 7 Miles of HDPE Pipelines Burnt in California Wildfire to Be Replaced

Hydrogen Gas Found to Diffuse Easily Through HDPE Piping
That means we can’t easily transition to a hydrogen economy using existing HDPE natural gas transmission and distribution networks

Aliaxis Partners with Big Data Analytics Software Company APX10


Canadian Engineering Company JANA Accused of Negligence and Fraud in Defective PEX Pipe Lawsuit
The underlying suit concerns water leaks from plastic pipe made of crosslinked polyethylene, commonly known as PEX. The plaintiffs— Texas plumbing installer Christianson Air Conditioning and Plumbing, LLC and homebuilder Continental Homes of Texas, LP (together “Christianson”)—sued Indiana pipe manufacturer NIBCO, alleging that NIBCO-branded PEX leaked after Christianson installed it in thousands of Central Texas homes built by Continental and others. Christianson also brought claims for strict products liability, negligence, and fraud—among others—against the real party in interest, Canadian engineering firm Jana Corporation. Christianson alleged that NIBCO hired Jana to reformulate NIBCO’s defective PEX pipe and to maintain certification of the pipe in the Texas market.  While Jana’s special appearance and Christianson’s motions were pending, the parties entered into a Rule 11 agreement. Jana agreed to make two of its executives—Wayne Bryce and Ken Oliphant—available for corporate representative depositions related to the special appearance, but the parties did not reach complete agreement on the scope of the depositions.
Amongst the claims in the lawsuit are:
No. 24: JANA’s knowledge of problems with PEX pipe sold by NIBCO and CPI (e.g., leaks, cracks, failures, pinhole leaks, oxidative failure, outside diameter, certain failures to meet ASTM 876 and F2023, variability in the PEX pipe, aggressive environments, etc.) at issue in this lawsuit which caused injury to the Plaintiff in Texas.
No. 27: JANA’s knowledge and impact of conditions, including but not limited to, high temperature, high pressure, hot chlorinated water, level of antioxidants, level of cross-linking, levels of stabilization, oxidative degradation, and UV radiation on PEX pipe such as the NIBCO PEX products at issue in this lawsuit with end use or field conditions like those in Texas.

Warning Over Chlorine Disinfectant: Stressful Effect on HDPE Pipe

Uponor / Wirsbo Plumbing System Lawsuit
Uponor, the manufacturer of Uponor PEX Pipe and fittings has been sued

Plumbing Expert Witness Opines on Faulty Plastic Plumbing Fittings


Tapered Waist Tensile Specimens for Evaluating Butt Fusion Joints of Polyethylene Pipes—Part 1: Development [PDF]

Extensive Testing on PVC Sewer Pipes Towards Identifying the Factors that Affect Their Operational Lifetime

Environmental Life Cycle Assessment of Different Types of the Municipal Wastewater Pipeline Network
Polyvinyl chloride (PVC), and polyethylene (PE) (315 mm in diameter) pipes were compared

Mechanical Behaviour of Polyethylene Pipes under Strike-Slip Fault Movements

Strength Assessment of PVC Pipes Filled with Geo-Polymer Concrete as Lender Column


Vinidex Seeking Polymer Pipe Extrusion Operators


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.

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.

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 early failure of PEX pipe and their expected service lifetime.
The 3 Step Testing is based on:

  • Oxidative Induction Time (OIT) testing to determine the residual level of oxidative stability (i.e. thermal stability)
  • Quantitative Additive Analysis (QAA) to determine the type and level of protective antioxidants and stabilizer present.
  • Scanning Microscopy on 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.


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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.

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.

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

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.

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.

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

New UHMWPE Pipe for Tailing Offers Greater Than 4X the Abrasion Resistance of PE100 (Australia wide)

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 [email protected]

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