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Material Description
Cafco MANDOLITE® 550 is a spray applied, single package
factory controlled premix, based on vermiculite and Portland cement.
Cafco MANDOLITE® 550 produces a monolithic coating able
to withstand the high thermal shocks experienced in high intensity hydrocarbon fuelled fires, particularly jet fires.
Cafco MANDOLITE® 550 may be used anywhere above the splash
zone on offshore installations, and even in the splash zone with suitable protection. It is easy to install and maintain in a
wide range of climates.
Although the added applied weight to a structure is low, Cafco MANDOLITE® 550
will accommodate structural flexing and also has excellent resistance to explosions.
Cafco MANDOLITE® 550 is used for application to offshore
steel or concrete structures, storage vessels and supports. It is also used on pre-assembled units prior to transportation
to site as well as to structures fire proofed after site erection. The offshore oil and gas industries will benefit from the
use of Cafco MANDOLITE® 550.
Fire Protection Thickness
Fire protection thickness requirements are often specified in the owner/operator's engineering codes of practice.
Alternatively, please consult Promat Technical Department.
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Typical Mechanical Properties
| Properties and
performance |
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Colour and finish |
Off-white, monolithic spray, float or rolled finish. |
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Minimum practical thickness |
15mm |
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Theoretical coverage |
76m²/tonne at 24mm thickness |
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Number of coats |
One or more as required |
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Cure |
By hydraulic set |
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Initial set |
6 to 8 hours at 20°C and 50% RH |
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Density |
Nominal 550kg/m³ |
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Compressive strength |
2300kN/m² (typical) |
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Combustibility |
Non-combustible to BS476: Part 4: 1984 and IMO RES A472 (XII) 1984 |
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Smoke generation |
Does not contribute to smoke generation |
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Substrate service temperatures |
Maximum 45°C |
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Thermal conductivity |
0.155 W/mK at 20°C |
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Corrosion resistance |
Does not promote corrosion of steel. However, a primed substrate is recommended for long term corrosion resistance,
particularly when the structure is to be fully exposed to the elements. |
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Chloride content |
Negligible |
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pH value |
Maximum 12.0 |
| Fire resistance |
Structures protected with Cafco MANDOLITE® 550 have
undergone fire resistance tests in approved independent laboratories.
The fire response of passive fire protection materials is assessed in fire tests that are intended to represent the
effects of real fires, either hydrocarbon pool or jet.
In addition, passive fire protection systems may be required to provide the following requirements:
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Protection against high momentum jet fires |
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Resistance to blast/explosion over pressures |
The ratings for passive fire protection systems are based on furnace tests carried out to the requirements of:
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BS467: Part 20: 1987 (Appendix D Hydrocarbon Curve) |
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ISO/DIS 834 Proposal |
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DEN/NPD Interim Standard |
The fire resistance test results relate solely to the construction tested and test conditions imposed. Promat provides
upon request computer-based thickness calculations to meet specific fire resistance requirements.
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Please consult nearest Promat office for specific details related to local, prevalent conditions.
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| Typical substrates |
Primed steel, galvanised/metalised steel, concrete structures, divisions and vessels. |
| Substrate preparation |
The substrate shall be clean, dry and free from dust, loose millscale, loose rust, oil and any other condition preventing
good adhesion.
Cafco MANDOLITE® 550 can be applied to primed steelwork.
Prior to application of Cafco MANDOLITE® 550, the primed
steel should be prepared by the application of CAFCO® KC 110. |
| Mesh reinforcement |
Fire tests conducted have been carried out with mesh reinforcement, to demonstrate the ability of Cafco
MANDOLITE® 550 to stay in place under the most severe
fire conditions or in an explosion. |
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| Methods |
Application of Cafco MANDOLITE® 550 must be carried out
by an applicator recognised by Promat Sprays Division and applied in accordance with the recommendations of Promat Sprays
Division.
Application manual is available from Promat Sprays Division upon request.
Apply Cafco MANDOLITE® 550 by a spraying machine approved
by Promat Sprays Division. |
| Limitations |
Cafco MANDOLITE® 550 may be applied when the substrate
and air temperatures are at least 2°C and rising, but should not be applied if they are less than 4°C and falling. Maximum
substrate and air temperature is 40°C.
Substrate temperature should be at least 2°C above dew point temperature. Where substrate temperatures are likely to be
above 40°C, please consult Promat Sprays Division. |
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Top coating |
For external locations, Cafco MANDOLITE® 550 shall
always be top coated. Please consult Promat Sprays Division for recommendations. |
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Packaging |
16.67kg bags |
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Storage |
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Off the ground and kept dry until ready for use. |
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Maximum temperature 25°C. Minimum temperature 2°C. |
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Shelf life |
Maximum 12 months |
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Environmental |
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Do not discharge into drains, watercourses or soil. |
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Not readily biodegradable. |
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Not expected to bioaccumulate. |
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Not expected to be toxic to aquatic life except at high concentrations. |
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Download full product description in PDF file. |
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