𝐑𝐨𝐭𝐚𝐫𝐲 𝐬𝐨𝐚𝐫𝐬, 𝐚𝐠𝐚𝐢𝐧!
Rotary has achieved another significant milestone with our 3rd heavy lift project of shop fabricated tanks this month. The two API 650 bitumen tanks have a storage capacity of 9000 cbm each and were fully shop fabricated in Rotary’s Batam Workshop. The tank fabrication activities also included PWHT (Post Weld Heat Treatment) of the first shell course nozzle plates, welding of insulation supports and blasting and painting of the tanks. With a diameter of 22.5m and standing at 28m high measured to the top of the tank roof, these tanks were successfully completed under a 6 months schedule, made possible by fabricating in our workshop environment resulting in higher shop productivity that also leveraged upon our semi-automatic welding technologies that ensured better quality and safety standards.
Weighing close to 350 metric tons each , the tanks were loaded out from Rotary’s Batam Workshop using SPMT (Self-propelled Multi-axle Trailers) onto a 61m LOA x 24m wide cargo barge at our Batam Workshop seafront. The load-out operation spanned over 2 days based on the tide timings. The cargo barge was towed from our Batam Workshop to the project site location at one of the offshore islands in Singapore. The tanks were rigged up to a spreader frame that was also fabricated and assembled at Rotary’s Batam Workshop. Over a two day heavy lift operation, each tank was lifted with a 5,000MT SWL Sheerleg Floating Crane. The tanks were lifted from the barge, crane repositioned and installed onto the tank foundation that was 110m away from the floating crane.
Through our extensive heritage and expertise in building customized engineered tanks, this milestone is another one for the books as Rotary continues to push new frontiers safely and in style.