Flange LeakSealing
Specialist flange leak sealing services for onshore LNG process piping — utilizing injectable sealant technology and precision-machined enclosures to permanently stop leaking flanged joints.
Applied on live OLNG systems at full operating pressure and temperature: no plant shutdown, no bolt removal, and no flame or hot work required for effective, permanent sealing results.
OUR FLANGE SEALING SERVICES
LEAK DIAGNOSIS & SCOPING
- Identification of leak path in flange joint, valve bonnet, or fitting
- Assessment of OLNG operating pressure, temperature, and process media
- Selection of appropriate sealant compound for LNG gas or liquid service
- Custom enclosure sizing and engineering for non-standard flange geometries
ENCLOSURE FABRICATION
- Precision-machined enclosures matched to exact flange face geometry
- Manufactured in carbon steel, stainless steel, or alloy materials
- Designed to contain full OLNG operating pressure during sealant injection
- Supplied with high-pressure injection fittings and monitoring ports
LIVE SEALANT INJECTION
- High-pressure sealant injection into the engineered enclosure cavity
- Sealant compounds rated for gas, liquid, and cryogenic LNG media
- Process conducted at full OLNG operating pressure — no isolation needed
- Continuous pressure monitoring throughout the entire injection procedure
POST-REPAIR VERIFICATION
- Leak rate monitoring post-injection to verify complete seal integrity
- Full documentation of injection pressures, volumes, and materials used
- Long-term follow-up inspection program for critical OLNG flanged joints
- Regulatory and OLNG operator compliance completion documentation
Our Commitment
We are committed to delivering pipeline construction projects that meet the highest standards of safety, quality, and responsibility.
Zero Harm
Safety is our highest priority
Quality Assured
Built right, the first time
On-Time Delivery
Reliable execution, on schedule
Environmental Care
Minimizing impact, protecting tomorrow
Project Types
- Greenfield Pipeline Construction
- Brownfield Pipeline Expansion
- Pipeline Replacement & Rehabilitation
- Facility Piping & Interconnection
EXPERIENCED. EQUIPPED. TRUSTED.
Backed by a skilled workforce, proven methodologies, and advanced equipment, we deliver pipeline construction solutions that energize progress and build a sustainable future.