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Mission Impossible—Kangaroo Valley. (Starring Munkebo—Not Tom Cruise.)

  • One of the largest protective-coating contractors in Australia took on an abrasive recovery and disposal job that everyone else said was “Impossible.”

  • One-mile underground pipeline needed over 200 tons of spent abrasive removed.

MISSION

Reline a 1-mile-long, 9-foot-diameter water pipeline in Australia’s Kangaroo Valley.

  1. Blast the pipe’s interior.
  2. Reline the pipe.
  3. Before relining the pipe, 190 tons of spent garnet, 27 tons of paint flakes, and miscellaneous other waste material needed to be removed from the pipeline.
The Munkebo MB-5000 Vacuum System and its 20-ton storage hopper onsite at the “Impossible” mission in the Kangaroo Valley.
The Munkebo MB-5000 Vacuum System and its 20-ton storage hopper onsite at the “Impossible” mission in the Kangaroo Valley.

OBSTACLES

  1. The pipeline is underground and the majority of it rests at a 60° incline.
  2. The entrance-exit to the pipeline is 1.5 miles from the hydropower station, where the spent abrasive needed to be transported for disposal.
  3. The hydropower station is located in Australia’s Kangaroo Valley, a protected nature reserve about a 2.5-hour drive south of Sydney. Noise, dust, and other safety and pollution compliance was particularly important in the nature reserve.
  4. The original plan was for workers to manually remove the abrasive —until Munkebo accepted the mission.

SOLUTION

  1. The contractor erected a Munkebo MB-5000 Vacuum System with a 20-ton storage hopper above ground over the pipeline.
  2. Munkebo custom-designed a 1,300-foot vacuum hose that ran underground from the vacuum system through an existing 65-foot inspection tunnel that connected to the underground pipeline.
  3. Workers then dragged the vacuum hose through the pipeline to the section of the pipeline where the spent abrasive and waste were stored.
  4. Workers vacuumed up the abrasive and waste.
  5. Once above ground, the abrasive and waste were transported away from the MB-5000 Vacuum System for disposal.
  6. The Munkebo MB-5000 Vacuum System recovered 4.5 tons of spent abrasive and waste per hour. This rate allowed the contractor to finish the job well ahead of schedule, therefore, avoiding penalties for completing the job past deadline.

OUTCOME

The impossible was accomplished. All of the spent abrasive and waste was removed for disposal. The success of the project helped the contractor become one of Australia’s largest coatings contractors, and the contractor has since regularly purchased more Munkebo Vacuum Systems and other Munkebo equipment.