21
d
&
ri
NOVEMBER-DECEMBER 2014
The Contract of the Year
under US$1.5millionwent to
AustralianDecommissioning
Services. The company
entered the project it carried
out at ArriumMining’s facility
inWhyalla, SA, where it
removed redundant process
plant while the facility
continued operation around
thework.
D&Ri
reports
A
ustralianDecommissioningServices
was taskedwith thedismantlingof a
redundant pellet plant rotarydryer,
dryer feedbins, conveyors anddust collecting
system includingductingonbehalf ofArrium
Mining’sWhyallaplant inSouthAustralia.
Themain challenges of the contract
includedworkingwithin the areaof a 24/7
operatingplant, with resulting interaction
with the client’sworkforce, plant and
equipment. ADS alsohad to ensure that
therewas no interruption toongoingplant
processes or risk to employees, contractors
or visitors, and finallydealwith significant
continual threat of dust production forADS
DEMOLITION AWARDS
Keyhole
surgery
andArrium staff and for the broaderWhyalla
township.
ThePellet Plantwas badly corroded,
thereforeprior to commencingworksADS
had to remotely assesswalkways, supports
and structures. The corrosion also limited
the access for isolation conformationby the
owner for all electrical andother energy
sources.ADShad to implement a strict system
to ensure it hadproof of isolationbefore any
work could commence. Significant timewas
spent checkingboth ends of cables for air gaps
and ensuringpipes had all drains and vents
openbefore any cutting could start.
Theplant is locatedwithin ahighly
Threemobile craneswere
used on the site to lift various
elements down to ground
level, with the largest a Grove
500 tonne capacity unit
