The Valhall Quarters Platform was installed in 1979. Due to regulation changes, the jacket needed upgrading to increase its strength and resistance to freak waves. To achieve this, the four legs of the jacket were injected with grout from sea level up to the cellar deck.
Aggregate-based grout was used to reduce the heat of hydration when curing, which would otherwise have been excessive due to the large volume of grout being placed.
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