Question 201General Subjects - Assistant Engineer

The correct answer is A) shut down the power unit and use two wrenches to avoid damaging the tubing when tightening. This is the correct approach because when dealing with a leaking flare-type tubing connector, it is important to first shut down the power unit to the hydraulic system to eliminate pressure. This ensures the tubing is not under tension, which could cause damage if tightened improperly. Additionally, using two wrenches - one to hold the flare nut in place and one to tighten it - prevents twisting or distorting the tubing, which could further compromise the connection. The other options are incorrect because: B) replacing both the tubing and fitting is unnecessary for a minor leak, C) tightening the flare nut while the system is in operation could be unsafe, and D) using only one wrench increases the risk of damaging the tubing.