1,540 tonne Roof installed on LNG tank in Kitimat

KITIMAT, B.C. – A roof was installed on one of the world’s largest LNG tanks in Kitimat this month. LNG Canada…

KITIMAT, B.C. – A roof was installed on one of the world’s largest LNG tanks in Kitimat this month.

LNG Canada is calling the installation of the roof, weighing in at 1,540 tonnes, which is equivalent to eight Boeing 747s, a milestone.

The tank stands 56 metres, or about 180 feet tall, from the concrete floor to the top of the newly placed domed roof, which is 92 metres in diameter. According to LNG Canada, the roof is taller than Rogers Place arena in Edmonton and just six meters shorter than B.C. Place stadium in Vancouver.

The tank has 225,000 cubic meters of interior space and will store liquified natural gas once the LNG Canada facility is up and running.

“This is a very complex project, with multiple work scopes and contractors,” says Naman Maheshwari, the LNG tank project lead.

LNG Canada says the roof was installed by being lifted from the ground using light air pressure from fans, at just 22 millibars, or about .32 pounds per square inch (psi). The pressure was less than one-one hundredth of a regular car tire, and the roof took three hours to lift onto the tank.

“The tank is now roughly 40% finished,” says Maheshwari. “The critical path now moves from civil works to mechanical, and provides the opportunity to open more work fronts inside the tank.”

The organization says the tank will eventually be encased in concrete, matching the tank’s walls, and an inner tank made of 9 per cent nickel alloy steel will be installed.

“The successful LNG tank roof raise represents another accomplishment for the LNG Canada project and demonstrates once again the high degree of professionalism, skill and care that go into our facility,” says LNG Canada CEO Peter Zebedee.

“In June, we saw the arrival of our first main cryogenic heat exchanger and pre-cooler units, and we’ll start receiving the first of our modules this fall. We’re making great progress, and we’re doing it safely. It’s an exciting time for the LNG Canada project as we continue to go vertical. I’m tremendously proud of the entire project team.”

 

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