Marine products offered by Rockwool Technical Insulation


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ACOUSTIC

What is sound? In physical terms, sound is the mechanical vibration of a gaseous, liquid or solid elastic medium. Sound is a form of mechanical energy. It is produced, when particles oscillate around their equilibrium position.

Propagation of sound in air happens, when a sound source, usually a vibrating object mechanically affected, makes the air molecules next to its surface oscillate around their equilibrium position in the stagnant air.

Due to the elasticity of the air the sound is propagated through the air by successive oscillations of the neighbouring elastic air particles, and we have a steadily progressing sound wave. If the sound source is vibrating harmonically, the fluctuations of the air particles will be harmonic too, and this in any arbitrary point. In a sound wave in air the particles will oscillate in the same direction as the wave front propagates (=longitudinal wave), and this creates areas with higher respectively lower pressure compared to the atmospheric pressure. Therefore sound waves can be treated as pressure waves.

COMFORT

The requirements of the indoor climate and comfort have become more stringent during the recent years. The insulation constitutes an important factor of this, as it ensures obtaining that the correct temperature is obtained.

The most common way of expressing thermal properties is by using the following nomenclature:

- Coefficient of the Thermal - Transmission (U-value)
- Thermal Resistance (R)

It is important to note that the λ-value for any given material varies with temperature specification of the λ-value should therefor be referred to as "mean" temperature and, if possible, to a standardised method for measuerement and calculation.

FACINGS INSULATION

There are many reasons for choosing insulation products with facings. It is generally done to obtain a vapour barrier, which prevents formation of condensation on the cold side of a construction.

FIRESAFE INSULATION

The ROCKWOOL Technical Insulation products are based on stone wool, which cannot burn and which can stand temperatures up to 1000 degrees C without melting. Thus ROCKWOOL stone wool provides the best guarantee for an effective fire protection on board ships and offshore platforms.

ROCKWOOL stone wool fibres can withstand more than 1000°C without melting, whereas the binding agent is lost at temperatures in excess of 250°C. When the temperature rises above 250°C, the binder will evaporate in the zone which is exposed to 250°C or more. But the fibres will remain intact as their inbuilt cohesiveness and layering will keep the fibres together, ensuring that the material will retain its rigidity and protect the material beneath it from being affected by the fire.

Since mineral fibres are highly resistant to temperature variations, ROCKWOOL mineral wool can be used under conditions of very high temperature, provided that it is installed in such a way that mechanical stress will not alter its shape when the binder evaporates.

FLOATING FLOOR

To obtain a good comfort, a good noise reduction is required between the individual decks. To prevent noise – particularly impact sound and structure borne noise– from travelling from one cabin to another you must use an insulation solution which has the necessary rigidity, elasticity and noise reduction/absorption.

ROCKWOOL Technical Insulation has for this purpose developed and for many years marketed the “SeaRox SL 436” (Marine Slab 140) with an excellent track record. This product is widely used by dedicated floating floor companies as the core material, combined with different types of load spreading top layers and base layers.
These solutions are extensively used on cruise liners where stringent requirements are made in order for people to be able to enjoy their cruise without being bothered by noise. At the same time many of these floating floor constructions are made as approved A-60 Deck Fire Protection Solutions. ROCKWOOL Technical Insulation also supplies solutions for floating floor, approved for A-60 Deck Fire Protection

PANELS

Throughout the accommodation areas of a vessel or living quarter, it is required to have B-Class fire restriction zones and fire protection between each cabin. At the same time it is needed to have comfort and noise insulation between each cabin, towards public areas etc.

For the sake of the fire safety owners and producers of ship’s panels and living quarters often require the core of the panels to consist of stone wool. For this purpose the SeaRox Marine Slab (Marine Slab) range of products has proven to be highly successful.
ROCKWOOL Technical Insulation has together with the customers developed a great number of special products possessing high compressive and delaminating strength as well as great fire resistance, which has been approved as non-combustible according to latest IMO regulations. The panel and door manufacturers hereby have an outstanding core material for the fabrication of sandwich constructions.

THERMAL

To guarantee a correct process cycle, the condition of the media within the pipes must remain within the set limitations (e.g. temperature, viscosity, pressure, etc.). In addition to the correct isometric construction and fastening of the piping, the piping insulation also has an important function. It must ensure that the heat losses are effectively reduced and that the installation continues to operate economically and functionally on a permanent basis. This is the only way to guarantee the maximum efficiency of the process cycle throughout the design service life without losses as a result of faults.

Principially, a thermal insulation structure for piping consists of an appropriate insulating material, usually covered by sheet metal cladding. This protects the pipe and the insulation from external influences such as weather or mechanical loads.

Spacers are also essential with insulation material such as wired mats , which do not offer sufficient resistance to pressure to hold the weight of the cladding and other external loads. These spacers transfer the loads from the cladding directly onto the pipe to be insulated. in case of vertical piping, support structures are fitted to take on the loads of the insulation and the cladding. In general, support structures and spacers form thermal bridges.