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MIV Failure - Broken Piston Rod
Date of Incident: 8 August 2022
Description:
Paerau scheme was dewatered and being prepared for testing. The G2 MIV was being dry stroked prior to testing. While the MIV was being opened, the counterweight was observed to shudder violently.
The MIV actuation was inspected, and the piston rod was seen to have broken off where the rod end screws on.
Original Shared Learning
