Image:Unitherm1.jpg
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[edit] Summary
Pipes covered with a thin-film intumescent spray fireproofing product called Unitherm. As the flame from the blow-torch hits it, the intumescent expands, forming a layer of insulation, which slows down heat transfer to the pipe below. Hydrates within the coating give up their water content, maintaining a temperature near the boiling point of 100°C. The critical steel temperature is ca. 540°C. Once the water is spent and enough heat has gone through the char, the steel can reach and exceed its critical temperature and then lose its strength. The time this takes determines the fire-resistance rating.
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File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 04:47, 15 April 2006 | 401×406 (145 KB) | Ahering@cogeco.ca (Talk | contribs) | (Pipes covered with a thin-film intumescent spray fireproofing product called Unitherm. As the flame from the blow-torch hits it, the intumescent expands, forming a layer of insulation, which slows down heat transfer to the pipe below. [[Hy) |
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