Cor-Shield Products

Test Data - Performance in Fire Situations

Low Smoke density and toxicity properties of Cor-Shield Polymer Coatings in the event of fire

Cor-Shield Polymer Coatings are 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, Cor-Shield Polymer Coatings 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

Cor-Shield Fire Tests and Fire Fume Certificates

The following certificates are available for Cor-Shield Polymer Coatings. Please contact Cor-Shield for a copy of the report.

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