NAMMULDI BWT WASTE FINES STORAGE FACILITY – STAGE 2

CLIENT
Rio Tinto

PROJECT
Nammuldi BWT Waste Fines
Storage Facility – Stage 2

LOCATION
60km Northwest Tom Price
Western Australia

CONTRACT AWARD VALUE
$14.9 million

START DATE
June 2016

COMPLETION DATE
April  2017

 

PROJECT DESCRIPTION
After successfully completing Stage 1 of the Waste Fines Storage Facility (WFSF) in 2014 NRW-NYFL were awarded the second stage of the project by Rio Tinto. The WFSF is located at the Nammuldi mine site, north-west of Tom Price in the Pilbara region.

THE CONTRACT
The contract included the construction of the embankment Stage 2 raise for the WFSF to RL 582m. NRW constructed Stage 1 of the WFSF to RL 575m. Stage 2 consisting of 7m raise was constructed using the downstream construction method.

Scope of work included:

  • Clear and grub Stage 2 inundation basin (146Ha)
  • Recover and stockpile topsoil and subsoil from the Stage 2 inundation basin (595,000m3)
  • 426,000m3 of earthworks including embankment raise, crest road, spillway and seepage collection system
  • Construction of the decant structure and access way
  • Supply and installation of instrumentation including piezometers, survey points, gauge boards and monitoring bores
  • Supply and installation of tailings distribution pipe system

KEY ACHIEVEMENTS

  • Project completed injury free with a TRIFR of zero
  • Successful engagement in the RTIO Critical Risk Management
  • Awarded the Project of the Quarter safety award for the period ending December 2016