Following inspection, over 700 condenser tubes required permanent isolation to safely return the unit to service. The downtime was critical as this particular unit meant a full plant outage.
4 mins
Avg Install Time Per Plug Including Tube Prep
0
Hotwork and NDT
Months
Time if welding in confined space
8 Days
Turnaround time
Project overview
Location
Victoria
Industry
Chemical
Repair solution
Special Pop-A-Plug – Manufactured to suit rare Tube dimensions
Following inspection, over 700 condenser tubes required permanent isolation to safely return the unit to service. Traditional repair methods involved welding a plug into each leaking tube, with every individual weld taking approximately four hours, followed by non-destructive testing (NDT). This approach also required hot work inside a confined space, significantly increasing safety risks while making the outage duration commercially impractical.
Our Solution
Working closely with Curtiss-Wright EST Group, PipeServ rapidly coordinated the manufacture and international shipment of specialist Pop-A-Plugs, installation tooling and support equipment within an extremely compressed timeframe, ensuring all materials arrived on site to meet the shutdown schedule. Once mobilised, the PipeServ team completed the tube plugging campaign using Pop-A-Plug® mechanical tube plugs, eliminating the need for thousands of hours of welding, extensive NDT requirements and prolonged hot work activities. The mechanical plugging process provided a safe, engineered permanent repair that dramatically reduced personnel exposure inside the confined space.
Results
Through detailed planning, rapid procurement and efficient field execution, the plugging scope was completed ahead of schedule, enabling the plant to restart the condenser and significantly reducing overall outage duration while maintaining the highest safety standards. Over 700 tubes plugged (1400 plugs). Removed Tubes for further analysis. Avoided welding in a confined space + NDT. Eliminated large amounts of confined-space hot work. Fast-tracked manufacture and logistics of specialised equipment. Completed the outage ahead of schedule, allowing the plant to return to operation sooner.
Frequently Asked Questions
Why choose Pop-A-Plug® over welded tube plugs?
Pop-A-Plug® provides a permanent mechanical tube plugging solution that eliminates the need to weld every individual tube. While a single welded plug can take around four hours to install and inspect (including NDT), Pop-A-Plug® can be installed in minutes using specialist hydraulic tooling. The result is significantly reduced outage duration, faster plant restart and lower labour costs without compromising reliability.
How does Pop-A-Plug® improve safety in confined spaces?
Unlike welded plugs, Pop-A-Plug® requires no hot work inside the heat exchanger or condenser. Eliminating welding removes ignition sources, hot work permits, fire watch requirements, fumes and post-weld inspections. This greatly reduces personnel exposure in confined spaces, making the repair safer while simplifying shutdown planning and execution.
Is Pop-A-Plug® a permanent repair?
Yes. Pop-A-Plug® is an engineered mechanical tube plug designed specifically for heat exchangers and condensers. It is cited in ASME Pcc2 article 312. It creates a high-strength mechanical seal by hydraulically expanding inside the tube, providing a reliable long-term repair used extensively throughout the power generation, petrochemical, refinery and process industries worldwide.
When is Pop-A-Plug® the best repair option?
Pop-A-Plug® is the preferred solution when plants need to return to service quickly, particularly during shutdowns where tube leaks are delaying production. It is ideal for large plugging campaigns, emergency repairs and projects where reducing confined space exposure, avoiding hot work and minimising outage duration are critical. Combined with experienced technicians and specialist tooling, Pop-A-Plug® enables engineered repairs to be completed safely, efficiently and often ahead of schedule.
Have a similar challenge?
Unplanned downtime is costly. Whether it's an emergency or a planned repair, Pipeserv has the products, expertise and partners to get your asset back online fast.
