The CSNRI Crack Arrestor is an engineered composite system designed to arrest propagating fractures in steel pipelines, providing operators with confidence and control over fracture events. Originally developed as a crack arrestor, the Clock Spring technology has a long history of proven performance, and today’s CSNRI Crack Arrestor continues to build on that foundation with modern engineering and materials.
Backed by extensive testing, modeling, and field-proven designs, CSNRI offers solutions for both hard arrest and soft arrest applications. Our conservative fracture arrestor models ensure operators can rely on predictable performance, supported by decades of research and validation.
With crack arrestors currently installed and operating successfully with several major U.S. CO₂ pipeline operators, CSNRI has established a trusted record of performance in demanding environments.
A properly designed and installed CSNRI Crack Arrestor system provides a high level of assurance that fracture propagation will stop at the installed unit. Arrestor spacing is determined based on regulatory requirements, fracture control planning, and risk analysis specific to each pipeline system—ensuring safe and efficient operations.
Features
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Fits standard API 5L pipeline sizes
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Manufactured under ISO 9001 quality system
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High-strength E-glass fibers in tough resin matrix
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Pre-cured laminate with field-applied adhesive
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Standard 12-layer, 12-inch sleeve design
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High modulus filler for weld seam reinforcement
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Precision-fit sleeve responds instantly to stress
Benefits
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Easy installation in varied field and temperature conditions
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Rapid crack arrest restores pipeline safety immediately
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Backed by 20+ years of proven field performance
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Fully compatible with CP systems, coatings, and soils
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Built-in durability ensures reliability in worst-case scenarios
