Contact Energy Wairakei Binary Plant Safety Case Project
The Contact Energy Wairakei Binary Plant Safety Case Project involved the migration of existing Allen Bradley PLCs and logic to ABB 800xA control system and the installation of an ABB 800xA high integrity safety system controller for all plant safety systems monitoring and shutdowns of the Ormat plant. The new SIL rated safety system included […]
Contact Energy Project Vinyl
Project Vinyl involved the installation of a new ILP Separator (ILPB), located next to the existing ILP Separator (ILPA) at the Contact Energy Flash Plant 14 site in the Wairakei Steamfield. The integration of the new ILP-B Separator required modifications to the existing ABB 800xA control system for the new equipment integration and dump systems […]
Contact Energy Project Columbus
Project Columbus involved new productions wells WK270, WK271 & WK272 in the Te Mihi Steamfield. The well controls integrated into the existing Te Mihi Steamfield Flash Plant 15 (FP15) ABB 800xA control system via Profibus Communications over a fibre link. For the project McMahon completed the conceptual and detailed electrical and controls design for the […]
Contact Energy Well Dosing Plants
Calcite Dosing Plants at various Contact Energy Geothermal sites in the Te Huka, Te Mihi and Ohaaki Steamfields. McMahon Involvement Electrical and controls hardware design Existing and new drawing and documentation revisions Installation supervision and commissioning
Te Mihi Steamfield
New production wells, reinjection wells and reinjection pump station for Te Mihi Power Station. McMahon Involvement Total hardware design (MV/LV/control systems) for total steam field design including; 12MVA substation 15km of 11kV overhead line 4 x 1500kW reinjection pump station 5 separate PLC systems with remote radio sites
Contact Energy Natures Flame Project
Contact Energy supply up to 22MW of energy to Natures Flame Ltd from a heat transfer plant located adjacent to the Tenon timber processing plant in Taupo. The Contact Energy Natures Flame Heat Plant (NFHP) is remotely controlled and monitored by Contact Energy Geothermal Group Control with local monitoring and limited control provided via ABB […]
Wairakei Steamfield
The Wairakei steamfield is located about 8km NE of Taupo and covers an area of approximately 15 square kilometres. McMahon Involvement Project Scope – Ohaaki Steamfield (Wells BR66 and BR67) McMahon provided the engineering design expertise to assist Contact Energy with the control system integration of Well’s BR66 and BR67 into the Separation Plant 1 […]
Poihipi Power Station
The Poihipi Power Station is a geothermal power station near Taupo that is owned and operated by Contact Energy. Generation is from a 50MW Fuji Electric turbine. McMahon Involvement Project Scope Greenfield Development Total turnkey electrical and control system design for the greenfield development of the power station. McMahon scope of work included conceptual and […]
Ngatamariki Steamfield
The Ngatamariki Geothermal site consists of 7 geothermal wells (3 production and 4 re-injection). McMahon Involvement McMahon successfully undertook and delivered the total electrical and control system design for the Ngatamariki Steamfield in conjunction with Hawkins Infrastructure Ltd. Inclusive of the was 11kV and control system reticulation design, conceptual and detailed design for the Steamfield, […]