Total E&P operates the Tunu gas and condensate field in East Kalimantan on the outer margin of the Mahakam delta with an average water depth of 8 m. Total has awarded Gunanusa to perform Engineering, Procurement, Construction and Installation of almost all of the phases of the development.

The North Compression Platform for Tunu Development Phase 8, weighing at 5400 tonnes, is the largest platform Gunanusa ever fabricated to date. The NCP would allow the North Tunu area to operate in MP mode. The platform comprises of inlet slug catcher, air cooler, condensate export pumps and turbo-compressors. The project was completed in September, 2002.