New York Low Pressure Boiler COF Practice

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What is the flame spread index of smoke density?

  1. 150 smoke index

  2. 250 smoke index

  3. 450 smoke index

  4. 600 smoke index

The correct answer is: 450 smoke index

The flame spread index, particularly regarding smoke density, is a key safety metric used to assess the combustibility of materials. A higher smoke index indicates a greater potential for smoke generation during combustion, which poses a risk for visibility and inhalation in the event of a fire. In this context, a smoke index of 450 signifies a significant level of smoke produced when the material burns, indicating it is more hazardous than lower indexes like 150 or 250, and also less hazardous than a 600 smoke index. This ranking helps safety professionals evaluate materials for construction and design to ensure that they meet fire safety standards and minimize risks in case of a fire.

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