Scope of Work
Shutdown + Commissioning
No incidents - Zero Harm
Laurie Stanton + Des Richardson
Resources + Key People
Project Manager: Brian Lynch
Project Superintendent: Marc Richards
Project Engineer: Brad Klease
Site Supervisors: Gregg Schneider, Keenan Hansen, Rob Lawler
SLE Services was contracted by Ensham Resources to undertake a planned shutdown on DL02 being a P&H 9020 dragline involving the following work:
Tub removal & reinstallation
Tub rails & rollers replacement
Centre pin bush replacement
Tub wear plate replacement
Drag drum overhaul including new drum end spiders and drum shaft & bearings
Hoist gearcase 1, 2 & 3 overhaul and machining of cases
Hoist drum bearings replacement
Lower fairleads overhaul
Tub crack repairs
Revolving frame crack repairs
All work was completed in full, on time and to budget with no incidents for the entire shutdown. SLE managed several different contractors on various work fronts and excellence in quality & safety was achieved on all fronts.
The complete shutdown was executed in full and without any incidents. Our core crew that is very experienced in dragline shutdowns were utilised on a 3 panel roster over the 28 day duration. SLE’s 7 x 500t synchronous jacking system was utilised for the jacking and levelling of the machine after the step to high cam and subsequent tub removal for the rails & rollers replacement.
Time Constraints, Challenges + Innovations
Key differentiators used on this shutdown for the lower & upper rail replacement were fabricated mechanical handling jigs for the handling of the rails along with a Leica laser tracker used for the tramming of the new lower and upper rails. This system was provided by Field Engineers and the process for tramming in the rails was expedited faster than planned in the baseline schedule with ultimate quality with rails trammed in within +/- 0.1mm.
Earlier shutdown pad preparation sets up mobilisation activities for success however this shutdown’s execution schedule was unaffected.