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Main Site | Technical Index | Data Sheets | Processing Guides | Enquiry Form | Service Conditions |
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Performance in Fire Situations
Low Smoke density and toxicity properties of Plascoat PPA 571 in the event of fire
Plascoat PPA 571 and 571ES is composed almost entirely on compounds of carbon, hydrogen and oxygen. Unlike many paints, it contains:
· no reactive ingredients
· no phthalates
· no halogens
· no isocyanates
· no heavy metals
On burning, therefore, the fumes are principally made up of carbon dioxide and water. As a result the toxicity of the fumes in a fire situation is extremely low. For instance:
· The index of toxicity of the smoke generated is 1.78 according to test method NES 713. This is well below the Royal (British) Navy requirements of 5.
· The index of toxicity of the smoke according to the test method BS 6853:1999 used for projects in the London Underground is 0.21. This is well below even the most stringent requirement of an index of 1.
Furthermore, the rate of generation of smoke and the density of the smoke are relatively low:
The US Railroad requires that the smoke generated should be less than an index of 100 at 1.5 minutes, 200 at 4 minutes etc. The smoke index generated from PPA 571 when burning is only 110 after 20 minutes.
The smoke density index according to the test method BS 6853:1999 used for projects in the London Underground is 1.13 (A0 (ON)) compared to a requirement of 2.6.
Under BS 476, Plascoat PPA 571 can be considered to be Class 0 and, though not specifically flame retardant, more than meets the requirements for coatings in tunnels, enclosed buildings and on passenger trains.
Low Smoke, Low Toxicity
The following certificates are available for Plascoat PPA 571 or PPA 571ES. Please contact Plascoat for copies:
| Country | Specification | Description | Result | Comment |
| UK | BS 476 Pt.5 | Test for Ignitability | Class P | |
| BS 476 Pt.6 | Fire Propagation | I = 0.2 | } Overall - Class 0 | |
| BS 476 Pt.7 | Spread of Flame | Class 1 | ||
| UK |
NES 713 [Royal Navy Specifications] |
Toxicity of Fume Index - | 1.76 | Less than "pass" requirement of 5 |
| UK |
BS 6853:1999 Clause D.8.4 |
Smoke density: Code of practice for fire precautions in the design and construction of passenger carrying trains. |
A0 (ON) = 1.13 A0 (OFF) = 1.37 |
Less than "pass" requirement of A0 (ON)=2.6 and A0 (OFF)=3.9. |
| UK | BS 6853:1999 | Smoke Toxicity: Code of practice for fire precautions in the design and construction of passenger carrying trains. |
CO2 (99.5%), CO (0.5%) R = 0.21 |
Less than lowest specification of 1 |
| USA |
NFPA 258 (ASTM E662-93) [cf. US Federal Railroad Administration] |
Smoke Generation - 20 minutes, Flaming mode | 110 | Less than "pass" requirement of 450 |
| " - 4 minutes | 2.7 | Less than "pass" requirement of 200 | ||
| " - 1.5 minutes | 0.2 | Less than "pass" requirement of 100 | ||
| - Non Flaming mode | 27.84 | |||
| USA | ASTM E84 | Surface burning characteristics of Building Materials | Class 1 or "A" rating | |
| Smoke developed = 10 | Less than "pass" requirement of 450 | |||
| Flame spread index = 10 | Less than "pass" requirement of 25 for Class 1 or "A" rating | |||
| France | NF P 92-501 | Fire Performance of Rigid Materials | Class M1 | |
| France | NF C20-453 | Corrosiveness of Smoke | pH = 4.46 | |
| France | NF C20-454 | Gases evolved during Pyrolysis:- | ||
| - Detected | CO2 (34%), CO (7.5%), Water and non-volatiles (58%) - Total 99.5% | |||
| - Not Detected | HCl, HBr, HCN, HF, SO2 | |||
| International | IEC 332 Pt.1 | Tests on electrical cables. Test on a single vertical wire or cable | Meets the requirements | <425 mm |
15/02/2010
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| © Plascoat Systems Limited, |
Plascoat Systems Ltd. Trading Estate, Farnham, Surrey GU9 9NY, UK Tel: +44 (0) 1252 733777, Fax: +44 (0) 1252 721250 email: sales@plascoat.com |
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