ONLINE LEAK SEALING
On-Line Leak Sealing
On-Line Leak Sealing is a temporary solution to tackle process system leakage problem whilst the process line is in full operation. NPSSB (Nikmat Permai Solution Sdn Bhd) leak sealing solution can tackle almost all kind of leaking substances, for example, steam, water, air, oil, hydrocarbon and chemicals products. This innovative technology can be used in process with pressure rating up to 380 bar and temperature ranging from cryogenic to 600°C.
A serious leak from a pipeline in a continuous process plant calls for a choice between three courses of action. First, the pipeline can be shut down for conventional repair; secondary, the leak can be left to blow, usually only for a limited time; thirdly, by means of a process, the leak can be cured while the line remains at full pressure and temperature.
The pipeline leak may occur at the flanges, straight pipe, elbows, tees and valve gland etc. This is due to the nature of the pipeline contents where the flow is turbulent and the pipeline is subjected to corrosion and/or erosion e.g. near to elbows and tees, or at a flange joint or a valve. It can also occur at the pipeline weld joints where the pipeline material is not homogeneous.
Our On-line leak sealing services is supported with experienced engineer and technicians on leak sealing repairs and design. At NPSSB, we strive to provide the most cost effective and reliable leak repair solution to meet our clients requirement. Whether it’s a pipe leak, valve leak or flange leak, we promise to provide the right repair solution to solve our client problem with fast response.
Common Leakage Of Pipeline
Valve Packing Leak
- This is the most common application for under pressure leak sealing services for many reasons.
- These valve packing leak can be repacked on-line very quickly and economically without shutdown or having to insolate the valve itself.
Flange Joint Leak
- Flange leak are an unfortunate common appearance in many facilities and can be easily sealed by using the on-line leak sealing technology.
- There are many different ways to achieving a seal on a flange depending on the gap of the flange and also temperature and pressure.
Pipe Fitting Leak
- The box enclosure clamps are manufactured to the standard pipe size and are fabricated in short radius or long radius application.
- Once the box enclosures are installed, they are injected with suitable sealant to perform a 100% guaranteed seal – injection groove/cavity filled sealing method is depending on pipe conditions.
Weld Joint Leak
- These enclosures are manufactured to various pipe sizes and can be installed and injected very quickly to avoid costly shutdown and further problems.
- Sometimes a strong back is used to give additional support or restraint to the pipe and clamp.
Heat Exchanger Leak
- The common leak sealing method used for heat exchanger leakage is the drill and tap method.
- The sealant selection is based on the medium, pressure and temperature – select a non curing sealing compound for it flow characteristics and for future re-injection purposes
Valve Bonnet Leak
- The common method used for valve bonnet leak is the drill & tap method, where we:
- Drill and tap a blind hole at the mid of valve body to suit an injection valve.
- A long series drill is use to break through the stuffing box body.
- A sealant is then injected to seal the leak through the injection valve.
Other Special Applications
Pipe Crimping
- Pipe crimping method is use to provide a permanent isolation or to block off the flow on a live small size pipeline where there is no isolation valves is available to perform an isolation.
- The principle of the process is to crimp the pipe with crimping clamp and inject sealant at the upstream side to seal off flow/leakage.
Pipe Wrapping
- Flange leak are an unfortunate common appearance in many facilities and can be easily sealed by using the on-line leak sealing technology.
- There are many different ways to achieving a seal on a flange depending on the gap of the flange and also temperature and pressure.
Valve Killing / Valve Passing
- Valve killing is a perfect solution to stop a valve seat passing to achieve an isolation
- Sealant is injected into the upstream side of seat area to provide a safe seal and to stop the flow.
- The sealant will remain in the system and is usually caught in a drain if the valve is open again
- Valve killing is perform by using the drill & tap method – under pressure and no shut down!
Metal Paste
Metal paste services is a repair work to repair damage surface such as badly corroded pipe, leaking pipe, tank, roller, shaft, valve body (inside and outside), propeller, fin blade etc. We are using specialize two-part putty that incorporated with fibre cloth or wire mesh.
Joint Maker Training
Why Joint Maker Training Important ?
- We provide all the necessary knowledge of joint making. From important safety precaution, basic knowledge, correct engineering terms, and proper method.
- As an experience leak sealing company, we will incorporate our knowledge on leak cause and preventive method to this training to ensure leak free joint making.
- As a refresher to senior technician and supervisor so they can perform effectively.
- By providing this training to your staff or technician, you client confident level with your company will increase and making your company chances of job securing high.
- We provide experienced and qualified trainers.