Due to fire regulations and demands most walls of Off Shore\u00a0Platforms need to be islolated against fire. The walls should be isolated to a fire of 1000 degree Celsius. This isolation on both sides is done so all walls can carry shear loads so the constructional integrity stays high when there is a fire. For example wind loads should be carried by the walls. The walls take the windload and bring through the construction piles to the ground.\u00a0\u00a0With a safety reasoning Practical Solution was able to convince the customer of not isolating all walls both sides. A lot of walls do not need to be isolated and still reaching the\u00a0same safety level.<\/p>\n
The platform consists of 9 seperate spaces. Practical solution asked the manager what would happen if in 2 spaces would be a fire. He said we abort the platform. So constructional safety level should be high if there was a fire in only one space. So no wall or roof should be abel to collapse when there is fire in one space.<\/p>\n
The main reason why many walls do not need isolation is the main steel load bearing structure consisting of pipes of big diameter isolated for fire by a layer of special concrete. All these pipes are so well isolated that when their is a fire these pipes still can transfer loads over the platform. So if there is a fire in one place these pipes can transfer the loads to be carried to another space or wall. Asume there is a fire in space A and the walls are not isolated. A windload acting on the left of the platform (see this PDF<\/a>) cannot be lead to the ground by the unisolated walls in space A because the steel wall gets to hot from the fire. The big pipes\u00a0can transfer this windload to space B. Because there is no fire at space\u00a0B this wall\u00a0can divert a windload\u00a0to the ground.<\/p>\n With this safetyreasoning it could be possible\u00a0to deliver 40% less on isolating material. Also huge savings on labor costs and weight could be reached.\u00a0\u00a0<\/p>\n