Insulation covers/doghouses

Subsea pipelines, flowlines, risers and associated equipment carrying high temperature hydrocarbons must be insulated to prevent cooling and solidifying during the flow process. However the connections between the lines and subsea equipment can form cold regions unless properly protected. Balmoral Offshore Engineering has developed a range of insulation products to help maintain the overall flow assurance.

Using static or transient finite element analysis, Balmoral designs insulation covers tailored to match either a project’s required overall heat transfer coefficient or design ‘cool down’ time and incorporate radial and longitudinal seals to ensure thermal integrity. The BOE field-proven sealant system helps prevent excessive water movement either from within the insulation covers or into the assembly.

The covers can be designed to be mounted onboard the offshore construction vessel or installed subsea by either a diver or remotely operated vehicle. The cover mounting procedure and closure system must be safe, fast and easy, requiring the minimum number of standard tools.

Insulation cover heat flux