Brazed joints in piping must use an alloy with a melting temperature above 1000ºF to retain integrity in fire.

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Multiple Choice

Brazed joints in piping must use an alloy with a melting temperature above 1000ºF to retain integrity in fire.

Explanation:
In this scenario, the important idea is that brazed joints must survive fire without melting. Fires can drive temperatures well above 1000°F, so the filler alloy used in brazing needs a melting point higher than that to keep the joint intact during exposure. Among the options, the alloy with a melting point of 1200°F meets the requirement by offering a margin above 1000°F, while 1500°F would also work but isn’t necessary if you’re aiming for the minimum acceptable margin. An alloy rated at 1000°F would melt if the fire reaches or exceeds that temperature, so it does not satisfy the requirement. Therefore, the best choice is the 1200°F option.

In this scenario, the important idea is that brazed joints must survive fire without melting. Fires can drive temperatures well above 1000°F, so the filler alloy used in brazing needs a melting point higher than that to keep the joint intact during exposure. Among the options, the alloy with a melting point of 1200°F meets the requirement by offering a margin above 1000°F, while 1500°F would also work but isn’t necessary if you’re aiming for the minimum acceptable margin. An alloy rated at 1000°F would melt if the fire reaches or exceeds that temperature, so it does not satisfy the requirement. Therefore, the best choice is the 1200°F option.

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