PIPELINE PERFORMANCE EXPERIENCES DURING SEISMIC EVENTS IN NEW ZEALAND OVER THE LAST 27 YEARS
Frank W O' Callaghan, Iplex Pipelines NZ
This paper includes first-hand observations and experiences, specific to pipeline systems in New Zealand seismic events, covering a 27 year period, from 1987 to 2014, including the Edgecombe earthquake of 1987, Christchurch City and Caterbury area earthquakes during 2010 to 2012, and the Eketahuna earthquake of 2014. These events provide us with a unique opportunity to practically evaluate the seismic performance of pipe materials and joint systems, that either survived, or were damaged and repaired, or were totally destroyed and abandoned, specific to New Zealand seismic conditions. This paper presents conclusions and recommendations fromt lessons learned during these events.
NEW PAPER - VALIDATION OF THE LONG LIFE OF PVC PIPES
Steven Folkman, Utah State University
Several analytical studies have estimated that PVC pipe can have a useful life of over 100 years.Recently, Utah State University conducted several tests on PVC pipes that had been in
use between 20 and 49 years. The results show that when the material has proper gelation, all of the quality control tests were successfully passed. This paper will also review these test results along with testing done by other researchers examining the long life expectancy of PVC pipe.
