Where both thermal and fire insulation are required for cold stores, the cost of MacGREGOR's new fire-resistant Pyro-Foam paneling package is much lower than conventional solutionsNew fire-resistant foam has been developed by MacGREGOR's Passenger Ship Division for the insulation of prefabricated paneling for cold stores. Offered as a turn-key package, the Pyro-Foam paneling system offers benefits both for those on board ship and for those involved in its installation.
Pyro-Foam is an environment-friendly modified phenolic foam which does not contain any CFCs or HCFCs. It has a fine cell structure which results in a consistent thermal conductivity in the range 0.028-0.036W/m.K at 10°C, depending on the density of the core foam employed. During the foam's lifetime, this thermal conductivity remains unchanged.Phenolic foam is inherently fire resistant so fire retardants are not required. Tests have shown that a typical phenolic foam-filled panel of 100mm thickness with steel facings has a fire resistance of greater than 60 minutes, with regard to both integrity and insulation, where there is a foam core density of 110kg/m³. This is according to standard BS476 Part 22.
The Pyro-Foam-filled prefabricated panels are constructed in compliance with USPHS requirements. Visible surfaces are covered in stainless steel with a 0.6-0.8mm thickness, and galvanised steel or polyester-coated galvanised steel of the same thickness is used for the hidden surfaces. The foam is injected under pressure between the metal skins and forms a chemical bond. Modular panels up to 6m in length and 1.2m wide can be constructed. Camlock mechanical locking fasteners have been incorporated to help make installation for the shipyard faster, cleaner and more efficient. Whilst the new foam has been developed specially for panels for provisions stores and walk-in refrigerators, it is also available in a range of fire-resistant doors intended for use in cold stores.