It is observed at petrol pumps and airports, that hydrocarbon fire extinguishers are used, instead of soda-acid fire extinguisher. Give reasons why.
Answers
Answer:
At airports or petrol pumps the probability of breaking fire from oils are more. In case of fires due to oils soda-acid fire extinguisher is not successful because it uses water to cool the combustible substance. But water is lighter than oil and settles down the oil particles and fire cannot be controlled. In such case Hydrocarbon fire extinguisher is used which has turkey red oil which causes the foaming of carbon dioxide under pressure. The foam covers the surface of burning substance and cuts off the supply of air to control fire.
Answer:
Expert Answer
At airports or petrol pumps the probability of breaking fire from oils are more. In case of fires due to oils, soda- acid fire extinguisher is not successful, because it uses water to cool the combustible substance. But water is heavier than oil and settles down below the oil particles and oil keeps on burning on the top. Hence, fire cannot be controlled. In such case hydrocarbon fire extinguisher is used which has turkey red oil, which causes the foaming of carbondioxide under pressure. The foam covers the surface of burning substance and cuts off the supply of air to control fire.