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If they show signs of rust or appear not to be secure, they should be reduced to _______ and discarded:

a) 0 psig
b) negative psig
c) 1 psig
d) positive psig

Answer :

Final answer:

Unsafe equipment showing signs of rust or insecurity should be reduced to 0 psig, which means it should be completely depressurized before being discarded to ensure safety. Thus, option A) 0 psig is the correct answer.

Explanation:

If components such as pipes or tanks show signs of rust or appear not to be secure, they should be reduced to 0 psig and discarded. The term 'psig' stands for pounds per square inch gauge and is used to measure the pressure relative to atmospheric pressure. When equipment is no longer safe to use, it must be depressurized completely to prevent any potential hazards. This means that the equipment should be brought to a state where it holds no gauge pressure (0 psig), ensuring it is safe to handle and discard. It should not be in a state of negative or positive gauge pressure, which could pose a risk.

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