Requirements for developing high temperature creep life models for ageing pipework systems using power plant condition monitoring and inspection data

Bonetti, R.; Morris, A.; Shipway, P.H.; Sun, Wei

doi:10.1016/j.ijpvp.2020.104233

Cited by 11 publications

(3 citation statements)

References 35 publications

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“…There exists a variety of creep damage models for components operating at various temperatures and stresses that can be used for FEA. They are categorized as empirical, phenomenological and physically based models [ 37 , 38 ]. The empirical models are most frequently used to estimate the RLA of components in the industry, which is related to their simplicity, rapidity of calculations, and interpretation of results.…”

Section: Proposed Methodologymentioning

confidence: 99%

“…Thus, the presence of cavitations, precipitations, changes of phase, changes in fracture mechanics, and other modifications may lead to less reliable results of RLA, errors, and overestimation of the long-term creep life [ 39 , 40 ]. Some of the widely used models are Larson–Miller [ 27 , 37 , 38 , 39 , 41 , 42 ], Manson–Haferd [ 37 , 38 , 42 , 43 ], Norton [ 37 , 44 , 45 ], Norton–Bailey [ 44 ], Omega [ 38 , 41 , 45 , 46 ], and others. The phenomenological models are less employed than the empirical ones due to their complexity.…”

Section: Proposed Methodologymentioning

confidence: 99%

“…Physically based models are believed to provide the best accuracy. They are based on creep constitutive equations from microstructural features varying over time, such as dislocation and interparticle spacing mechanisms, and temperature [ 38 ]; yet these types of models are very complex to implement for industrial needs [ 47 ]. Numerous empirical and phenomenological creep models are integrated into FEA software packages.…”

Section: Proposed Methodologymentioning

confidence: 99%

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Residual Creep Life Assessment of High-Temperature Components in Power Industry

Pivdiablyk¹,

Goh²,

Chye³

et al. 2023

Sensors

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A large percentage of power, petroleum, and chemical plants over the world were in operation for a long duration with the corresponding critical components being used beyond the design life of 30 to 40 years. It is generally more cost-effective to refurbish or modernize the degraded equipment or components, rather than to construct a new plant. Therefore, a reliable plant life extension assessment that can evaluate the critical components is needed. The key element in plant life extension is the residual life assessment technology. However, at present, there is still no general consensus among the industry players on the approach to adopt when performing residual life assessment for such a critical damage mechanism as creep. In this article, a three-level residual life assessment methodology is proposed as a general approach for high-temperature components prone to creep. A detailed validation of the selected guidelines and calculation models is also described. Eventually, an application of the three-level methodology to a real industrial case study is presented.

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Section: Proposed Methodologymentioning

confidence: 99%