What action do you take prior to pipe patching?

What action do you take prior to pipe patching?

• A. Evacuation
• B. Isolation
• C. Inspection
• D. Ventilation

Answer: (B)

Isolating the piping segment is the crucial first step before patching. By closing valves on both sides of the damaged section, you stop the flow and relieve pressure from pushing through the leak, confining the problem to a known area and creating a safer space to work. With the line isolated, you can depressurize and drain the segment as needed, clean the surface, and apply the patch without material moving through the leak. After isolation, you can proceed with patching and then recheck the system. Evacuation or ventilation may be important for safety in certain situations, but they do not directly enable the patching operation itself; isolating the section is what makes patching feasible.

Isolating the piping segment is the crucial first step before patching. By closing valves on both sides of the damaged section, you stop the flow and relieve pressure from pushing through the leak, confining the problem to a known area and creating a safer space to work. With the line isolated, you can depressurize and drain the segment as needed, clean the surface, and apply the patch without material moving through the leak. After isolation, you can proceed with patching and then recheck the system. Evacuation or ventilation may be important for safety in certain situations, but they do not directly enable the patching operation itself; isolating the section is what makes patching feasible.