Fusible Polyvinyl Chloride Pipe Provides Owner with a Monolithic ...

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Research indicates that HDPE can be degraded by common water disinfectants leading to Stage III “end of life failure” • Polyethylene is a polyolefin family plastic – which oxidizes <strong>with</strong>out the aid of antioxidants that are added to the HDPE formulation • Over 20 research papers published since 2004 document the failure of HDPE (PE80, PE100) pipe in the presence of water disinfectants – Stage III failure resulting from oxidation (rapid antioxidant consumption) and polymer chain scission i • North American standards (ASTM and AWWA) do not give guidance on a design factor to account for this newly documented phenomenon • Life expectancies do not consider Stage III failure • Safety factors do not consider oxidative failure mode • PVC has been demonstrated to be resistant to oxidation due to water disinfectants Hoop Stress Stage III oxidative induced cracking polyolefin family pipe – Choi 2008 Chemical Aging Premature Stage III Failure Time Hydroperoxide decomposition of polyethylene under attack by chlorine dioxide – L. Audouin et al. 2007
Continuing Research Demonstrates that Aged HDPE (in Chlorinated Water) Allows Dramatically Higher Diffusion of Toluene: AWWA Research Foundation Project # 4138 OIT Level Carbonyl Id Index
Page 1 and 2: Hawaii Section /American Water Work
Page 3 and 4: Project Background • The South Ra
Page 5 and 6: Location of Existing Waterline To B
Page 7 and 8: Design Considerations Design: • S
Page 9 and 10: Line Replacement Layout
Page 11 and 12: Basis of Design Summary: • Replac
Page 13 and 14: The Underground Solutions ® PVC Fu
Page 15 and 16: San Francisco International Airport
Page 17: INCORPORATION OF FUSIBLE C-900 ® A
Page 21 and 22: Incorporation of Fusible C-900 ® a
Page 23 and 24: Construction Challenges • Horizon
Page 25 and 26: Fusible C-900 ® Layout - Fused Joi
Page 27 and 28: Fusible C-900 ® Layout - Installat
Page 29: Questions?

Fusible Polyvinyl Chloride Pipe Provides Owner with a Monolithic ...

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