Case study for failure analysis and prevention in subsea axial check valves used on chemical injection lines

Karan Sotoodeh ()
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Karan Sotoodeh: Baker Hughes

International Journal of System Assurance Engineering and Management, 2024, vol. 15, issue 3, No 34, 1315-1324

Abstract: Abstract Subsea axial check valves are used in manifolds on chemical injection lines. This study discusses the problem of the ingress of particles and dirt inside such valves during hydrostatic tests of the manifold. Visual inspection with a borescope and leakage tests are performed on the internals of four axial valves. The inspection and test results show that the valves have no faults and function well. The leakage test and analysis are performed according to the requirements of API 6DSS and ISO 5208 as well as internal project requirements. Although the valves are not damaged in this case, two solutions—axial valves with flanges at both ends or with removable internals—are proposed to prevent the risk of valve failure during the hydrostatic test of the manifold. The first solution, namely, flanges at both ends of the valve, is recommended.

Keywords: Axial flow check valve; Subsea manifold; Offshore; Oil and gas industry; Valve failure; Hydrostatic test; Visual inspection; Leakage test (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s13198-023-02187-6

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