An active leak in an industrial facility does not always mean the affected system has to be immediately taken out of service. Depending on the location of the leak, operating conditions, and condition of the equipment, online leak repair methods can be used to control leakage while the system remains operational.
Also referred to as live leak repair, these techniques are commonly used on industrial piping, valves, flanges, and other pressurized components where avoiding an unplanned shutdown is a priority.
When Can an Industrial Leak Be Repaired While the System Is Running?
Whether a leak can be repaired online depends on the specific conditions surrounding the equipment.
Before determining a repair approach, several factors need to be evaluated, including:
- Operating pressure
- Temperature
- Process media
- Location and severity of the leak
- Pipe or component condition
- Component geometry
- Accessibility of the repair area
There is no single repair method for every active leak. The repair needs to be selected around the actual conditions of the system.
How Are Active Pipe Leaks Repaired Online?
Active leaks on industrial piping can develop from corrosion, erosion, wall loss, damaged welds, cracking, or localized deterioration.
For qualifying applications, the leak can be controlled using specialized live leak repair techniques while the line remains pressurized.
Mechanical enclosures, injection methods, and other engineered repair techniques can be used to create a controlled sealing area around the leak. In applications where the pipe has also experienced deterioration, composite repair materials may be incorporated into the overall rehabilitation approach.
This allows the immediate leak and the condition of the affected piping to be addressed as part of a planned repair strategy.
Repairing Live Steam Leaks Without a Shutdown
Steam systems are one of the most common applications where online repair can provide significant operational benefits.
A leaking steam valve, flange, packing area, or section of piping may be operating under elevated temperatures and pressures. Taking that equipment offline can affect other processes throughout a facility.
Online steam leak repair techniques are designed for qualifying applications where the leak can be controlled while the system remains operating.
The repair method is determined by the component, temperature, pressure, leak location, and surrounding conditions.
How Are Leaking Valves and Flanges Repaired While Online?
Not every industrial leak occurs directly through a section of pipe.
Valves and flanges contain connection points, packing areas, gaskets, and other locations where leakage can develop over time.
For certain valve leaks, a custom enclosure can be installed around the affected area. Specialized sealing material can then be injected into the enclosure to control the active leak.
A similar approach may be used for flange leak repair, creating a controlled sealing area around the leaking connection without having to disassemble the flange.
These techniques can be particularly valuable when the component is part of a process that cannot easily be interrupted.
Why Facilities Use Live Leak Repair
When a critical line develops a leak, shutting down the system can affect much more than the damaged component.
Production may need to stop. Connected processes may be interrupted. Equipment may require additional shutdown and startup procedures. Maintenance schedules may also need to be changed unexpectedly.
Online leak repair gives facilities another option.
By controlling the leak while equipment remains operational, maintenance and reliability teams can reduce unplanned downtime and gain greater flexibility in managing the affected system.
Online Leak Repair for Critical Industrial Systems
Active leaks can occur unexpectedly, but an immediate shutdown is not always the only option.
RAK Industrial Services performs online leak repair and live leak repair for qualifying industrial piping, steam systems, valves, flanges, and other pressurized equipment.
By evaluating the leak, operating conditions, and affected component, the appropriate repair method can be developed to control leakage while minimizing disruption to plant operations.
For critical situations, RAK also provides 24/7 emergency industrial leak repair services.