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Review of the Maui pipeline outage
In October 2011 an outage of the Maui gas transmission pipeline occurred. The government undertook a review of the outage to ensure that the lessons learned are captured and that appropriate steps are being taken to strengthen the gas system.
Read the Minister's media release
The government’s report brings together the findings of a review of the performance of the contingency system, technical reports completed for the pipeline owner, and information collected on the effects of the event:
- 2011 Maui Pipeline Failure Technical Investigation Report [503 KB PDF]
- Failure of Maui pipeline – Report Status [7.6 MB PDF]
- Meeting minutes – planning for metallurgical failure investigation [109 KB PDF]
- Visual examination of the samples supplied from Maui pipeline failure at White Cliffs [4.5 MB PDF]
- Magnetic particle inspection of samples supplied from Maui pipeline failure at White Cliffs [53 KB PDF]
- Generation of 3D mesh model of failed pipe [1 MB PDF]
- Progress report after the initial examination and NDT [91 KB PDF]
- Chemical analysis of pipe material and weld [918 KB PDF]
- Fractographic examination of sample from the failed pipe sample 1800 mm [1.4 MB PDF]
- UT inspection for plate lamination on sample supplied from Maui pipeline failure [51 KB PDF]
- Metallographic examination and hardness testing on samples removed from Maui pipeline failure [4 MB PDF]
- Mechanical testing [440 KB PDF]
- Urenui-Otorohanga line-flight, 31 October 2011 [1.7 MB PDF]
- Geotechnical assessment of the site of the October 2011 Maui gas pipeline failure near Pukearuhe, northern Taranaki [10 MB PDF]
- Assessment of landslide and other erosion hazards along the Kapuni and Maui pipeline alignments: Urenui to Otorohanga [114 KB PDF]
- Figure 1-1 [3 MB PDF]
- Figure 1-2 [3 MB PDF]
- Figure 1-3 [3.5 MB PDF]
- Figure 1-4 [3.7 MB PDF]
- Figure 1-5 [3.7 MB PDF]
- Figure 1-6 [3.9 MB PDF]
- Figure 1-7 [3.7 MB PDF]
- Figure 1-8 [3.8 MB PDF]
- Figure 1-9 [3.5 MB PDF]
- Figure 1-10 [3.5 MB PDF]
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