52MW Tuai Hydro Power Station Relief Valve Refurbishments.
The Tuai power station was commissioned in 1929. The Turbine Relief Valves (TRVs) of each hydro turbine (G1 & G2) required refurbishment to improve their reliability. MTL prepared the scope of work for the Fitness For Service (FFS) & Refurbishment works of the TRVs. Specialist advice was provided on particular refurbishment, inspection and adjustment issues that arose in the course of the site work and commissioning.
Testing of the TRVs, for their return to service, showed that their performance had been restored to similar performance to that on their original commissioning.
MB Century Ltd, Bosch Rexroth NZ Ltd, Cheal Consultants, IMG, SGS New Zealand Ltd, Metal Repair Systems Ltd.