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NEWSMAKERS: * Alliance for PE Pipe * Aquatherm * AWWA * COUTA * ExcelPlas * Kenkar * Key Plastics * ISCO * NDT * NIBCO * PE100 * PE4710 * PEX Failure * PIPA * PPN * PP-R * QENOS * Standards Australia
2020 Second Edition of AWWA M55 HDPE Pipe Published
The new manual on PE100 pipes includes PE4710 compounds that have been added in the ANSI/AWWA C901 and C906 standards.
Podcast – Future of Bimodal PE100
Peter Dyke (Alliance for PE Pipe) interviews MIT trained chemical engineer Doug Keller who shares his perspective on the PE4710 resin, evolution of the various markets and what the future holds for advancements in the product.
Qenos Awarded ~$2Mill Government Grant for Research on Graphene in Polyethylene Pipes
PIPA Issues New Guidance on Hydrostatic Field Pressure Testing of HDPE Pipes [PDF]
Court Case on Defective PEX pipe
Plaintiff alleges in the Second Amended Complaint that Defendant’s PEX Products “suffer from undisclosed design or manufacturing defects that cause them to fail prematurely.”. The hidden defects allegedly develop after several years and are detectable only after removal and microscopic examination. Specifically, Plaintiff alleges that Defendant’s PEX Tubing suffers from a design or manufacturing defect that leads to premature oxidative failure and creep rupture; its PEX Fittings suffer from a design or manufacturing defect because they are predisposed to prematurely fail as a result of dezincification corrosion; Further, Plaintiff alleges that Defendant knew or should have known that other consumers had experienced water damage caused by slow growth cracking mechanisms consistent with oxidative failure or creep rupture.
Proposed Changes to AS/NZS3500 Standards Set to Affect PEX Pipe Products and Drive Up Industry Costs
The proposed changes to the AS/NZS3500 standards seem intent on driving PN12.5 products out of the market in spite of that fact that there has never been a failure with these products in use
Public comment is welcome on these changes. Submit your feedback to Standards Australia at: (Closing date for comment is 28th August 2020)
Podcast by Jim Johnson, Champion of Innovation and McElroy’s Vice President and Chief Technology Officer on HDPE Pipe Welding Innovations
Podcast – Tech Services Engineer Connor Bush (Performance Pipe) sits down with Peter Dyke to talk civil engineering and HDPE Pipes
Thermal Characterization of Graphene/Polyethylene Nanocomposites
Assessing Remaining Service Life of Polyolefin Pipes (HDPE, PEX, PP-R, PB) (How Long Will My Pipes Last?)
ExcelPlas has developed Protocol for Determining the Remaining Service Life of In-Service HDPE Pipelines
The 5 step protocol is based on lab testing to measure the following:
I. The oxidative induction time (OIT) profiling to assess whether or not oxidation protection is still afforded by the additives.
II. Measure the carbonyl index (CI) to assess extent of any polymer oxidation that has occurred.
III. Determine the critical CI at which oxidative stress cracking (OSC) is initiated.
iV. Measure oxidative stress cracking resistance (OSCR) to determine the time until OSC is initiated.
V. Measure the depth of micro cracking on 180 degree bent coupons by Scanning Electron Microscopy
NDT of HDPE Pipe Welds Equipment Rental – TOF-D Units Available to Rent with Training Modules
Forza Global Issue Guide on Peroxide-cross linked Polyethylene (PE-Xa)
Thermal Ageing of a Silane-crosslinked Polyethylene (PEX) Stabilised with a Thiodipropionate Antioxidant
ISCO Announces National Distribution Agreement with Aquatherm
Key Plastic Pipe Industry Resource Launches New Website
Material Selection for Landfill Leachate Piping by Using a Grey Target Decision-Making Approach
Tensile Behavior of High-Density Polyethylene Including the Effects of Processing Technique, Thickness, Temperature, and Strain Rate
Kenkar Plastics Pty Ltd Seeking Poly Pipe Welding Technician
Asian Chalk Suppliers Push Adulterants and Extenders to Reduce Cost of PE Pipes
Study of Time and Temperature-Dependent Behaviour of High Density Polyethylene
Exposure of Various Polymer-Lined Carbon Steel Pipe Sections to a Sour Hydrocarbon Fluid at a Maximum Service Temperature
Stress Characteristics of GRP Plastic Pipe Culvert with Sand and Optimization of Load Reduction Parameters Under Adverse Conditions
Fire behaviour of Hybrid Filament-wound Single and Adhesively Bonded Composites Pipes under Static Pressure
ExcelPlas Labs – for Testing Times
• PPN Now Offering Digital Ads, Featured Articles and Premium Positioning
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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.
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.
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
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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