Question 325General Subjects - QMED

The correct answer is C) bends or loops in the line. Expansion and contraction in piping systems can be accommodated through the use of bends or loops in the piping line. These allow the piping to flex and move as it expands and contracts due to changes in temperature, pressure, or other factors, without causing damage to the system. This is a common and accepted engineering practice for managing the effects of thermal expansion in piping installations. The other answer choices are not the primary means of addressing expansion and contraction. Union bulkhead fittings (A) and unions (D) are used for connecting piping sections, but do not provide the flexibility needed to compensate for expansion. Retractable flanges (B) are not a standard industry solution for this purpose.