Tanks Flashcards

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1
Q

What is “free board” in regards to tanks?

A

Free board is a space kept between the top of water level and the bottom of the roof slab of a tank.

It is the depth between the overflow pipe and the base of the roof slab, i.e., the clearance maintained between the maximum water level and the roof slab.

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2
Q

For a field-erected tank, what type of test is important for the bottom seams?

A

Vacuum box test

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3
Q

What type of test is being described here: “_________ testing is a non-destructive examination used when trying to locate weld seam leaks. A vacuum box and a compressor create a high or low pressure vacuum while a detergent solution is applied to the test area. The detergent bubbles, making leaks visible within the created pressure envelope.”

A

Vacuum box test

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4
Q

What type of test is pictured here?:

A

Vacuum box test

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5
Q

What is this?

A

Air test hole

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