Successful 4,844t Load Out by Sarens in Vietnam – Heavy Lift News
16 Dec 2022

Successful 4,844t Load Out by Sarens in Vietnam

The Vietsovpetro joint venture recently engaged Sarens for a two-part project involving the load out of two jackets in Vung Tau, Vietnam. The first jacket, the ZWP 12, was loaded out at the end of September and marked the culmination of two months of preparation, design, calculations, and mobilisation.

For this operation, Sarens mobilised the following equipment:

  • 5 x 588t strandjacks
  • 3 x 800t breakout jacks
  • 22 submersible ballast pumps and 8 deck pumps
  • 7 hydraulic powerpacks
  • 2 x 20t and 6 x 40t mooring winches
  • Auxiliary equipment

The equipment was selected based on a variety of factors, including jacket dimensions and weight, tidal conditions, transport barge configuration, strandjack load, mooring and ballasting calculations, and more.

The intention had been to use two 800t breakout jacks to surpass static force and move the jacket from its initial position, then deploying the four 588t strandjacks to pull it into its final position on the barge. However, Sarens did not need to use the breakout jacks as the strandjacks alone were sufficient to overcome any challenges.

Sarens successfully moved the 4,844t , 140.3m ZWP12 jacket. Sarens crew used the strandjacks to pull the jacket along 148m of skidways, including 21m on the ground and 127m on the barge. It came to rest in its final position on the barge.

The loadout was scheduled for the next morning, but due to the approaching Typhoon Noru had to be deferred two days. Despite the delay, the crew still had to contend with heavy rain and winds reaching up to 24 knots. They used submersible pumps and deck pumps, in combination with the barge’s internal ballasting system, to balance and level the barge at the quayside. Because of the port’s shallow sea floor, they also had to be careful to maintain the barge’s draft during the loadout operation.

“The loadout was performed seamlessly, even with inclement weather from Typhoon Noru,” says project manager Robert Suh. “The team performed under the estimated time planned, leaving our client Vietsovpetro happy with our execution of work.”

The second jacket, the ZWP 15, was loaded out in mid-November in a similar operation.

Sarens would like to congratulate the 40 member team, from engineering to on-site execution, for a successful operation.

Source Sarens


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