Function of fusible plug in a boiler is to ______________________?

1.	Function of fusible plug in a boiler is to ______________________?
A.	Drain out water and sludge from the boiler during repair
B.	Put off fire in the furnace when water level in the boiler falls to unsafe limit
C.	Guard the boiler in case of abnormal rise in steam pressure
D.	All A, B. & C
Answer» C. Guard the boiler in case of abnormal rise in steam pressure

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Function of fusible plug in a boiler is to ______________________?

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