Reliable Bolted Connections in LNG and Refinery Operations
Industry Challenge
Unplanned shutdowns in LNG, GTL, and refinery environments introduce elevated risk during restart, particularly across critical bolted flange connections. While systems may appear intact following an event, underlying changes in joint behavior can significantly impact sealing performance and long-term reliability.
Restart conditions often combine thermal cycling and pressure fluctuations, creating an environment where the effects of differential thermal expansion, creep, and relaxation can lead to loss of preload, leakage, reduced efficiency, or unplanned downtime.
The Solution
Solon® Flange Washers introduce a controlled spring force into the joint, adding elasticity that allows it to respond to thermal expansion, pressure fluctuations, and relaxation while maintaining consistent bolt preload.
By maintaining bolt or gasket stress above the level required for sealing, they help preserve joint integrity under demanding LNG and refinery conditions.
Key Benefits:
- Compensate for Preload Loss: Maintain clamping force during thermal cycling, reduce the effects of embedment relaxation, and improve resistance to vibration-induced loosening.
- Enhance Flange Stability: Preserve bolt tension over time, eliminating the need for retightening and minimizing the risk of leaks during startup.
- Manage Gasket Performance: Maintain gasket seating stress to ensure reliable sealing and long-term joint performance under thermal and pressure variations.
- Reduce Bolt Load Variation: Absorb flange rotation during sequential tightening so each bolt retains consistent load and preserves joint integrity.
Together, these benefits ensure Solon Flange Washers maintain reliable joint performance under demanding LNG, GTL, and refinery environments.
Download the full case study for more technical insights on Solon Flange Washers in LNG, GTL, and refinery applications.Additional Resources:
Technical White Paper: Cryogenic Testing of 17-7PH Flange Washers
Technical White Paper: Why Do Gasketed Joints Leak?
Technical White Paper: Valve Live Loading
Case Study: Flange Washers Reduce Fugitive Emissions in LNG Applications
Case Study: Solon Flange Washers for LNG Applications
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Case Study: Heat Exchanger Leaks at Indonesian Refinery
Case Study: Solon Flange Washers Solve Gasketed Joint Leaks in Nuclear Power Station Heat Exchangers
Case Study: Enhancing Pipe Support Reliability
Industry Served: Oil & Gas
Calculator tool: Flange Leak Prevention Calculator
Calculator tool: LNG/Cryogenic Flange Calculator