Failure assessment of ASTM A213-T12 superheater boiler tubes in a natural gas liquid plant

Firouzeh, Arezoo; Ranjbar, Khalil; Baghal, S.M. Lari; Kaidan, A. Heidari; Mohemi, Enayatolah

doi:10.1016/j.engfailanal.2018.03.005

Cited by 17 publications

(2 citation statements)

References 10 publications

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“…The steam generation leaves deposits inside the superheater (SH) and reheater (RH) tubes which increase the metal temperature leading to long term overheating is the main cause of failure of SH and RH [6][7]. The thick oxide layer in the inner surface of steam boiler tubes led to a series of metallurgical degradation and the loss in mechanical strength of the boiler tubes in a liquefied gas treatment plant [8]. In power producing plants where components are exposed to high temperature, creep life assessment is a major concern [12].…”

Section: Introductionmentioning

confidence: 99%

Remnant Life Assessment of High Temperature Tubes in 250MW Boiler

Vikash¹,

Sethi

Sharma

2022

Advances in Transdisciplinary Engineering

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The fluctuation in temperature and pressure in boiler parts subjected to creep and fatigue stress and also fuel burnt and steam generation leads to corrosion in various areas in the boiler. Residual stress during manufacturing, the vibration due to flow over the tube, mechanical vibrations, erosion due to the abrasive nature of the fuel, does occur in boilers. All of the above, individually or combined lead to material degradation of different magnitude and will lead to failure. It also leads to reduction of creep life of superheater tubes and results in the necessity of superheater repair every 4–5 years with replacement of up to 30–50% of tubes. The remnant life assessment (RLA) of boilers predicts accurately the remaining life of high temperature tubes allows reducing the amount and cost of repair. The method of assessment of remaining life for superheater and reheater steel tubes operating in conditions of intensive high-temperature corrosion is presented in this paper. The method is based on measurements of tube wall thickness and corrosion resistance of particular steel.

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Section: Introductionmentioning

confidence: 99%

Remnant Life Assessment of High Temperature Tubes in 250MW Boiler

Vikash¹,

Sethi

Sharma

2022

Advances in Transdisciplinary Engineering

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“…Tube side failures are mostly attributed to corrosion or brittleness caused by operational mishandling or manufacturing . Disturbed water chemistry has also been reported to trigger such incidents because of scaling which causes localized overheating . Localized overheating can also be caused by the outer layer deposits and dry running of the tubes .…”

Section: Introductionmentioning

confidence: 99%

Comprehensive dynamic modeling, simulation, and validation for an industrial boiler incident investigation

Taimoor

Alghamdi

Farooqi

et al. 2019

Process Safety Progress

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Industrial boilers simulation can serve number of purposes like training, optimization, HAZOP studies, and incident investigation. Simulation including trip logics, interlockings, safety devices, start‐up and shutdown procedure is presented in this work. Simulation is directly accomplished in dynamic mode to benefit from the holdup approach to avoid anomalies because of recycling. The industrial DCS/PLC diagrams are replicated to imitate the boiler‐integrated behavior. Trip logics, start‐up and shutdown procedures are programmed using event scheduler. The inbuilt pressure relief module validates the simulated PSVs and rupture disc capacities. The model is then verified at three stages including ‘steady state’ achievement in dynamic mode, controller validation by start‐up and shut down procedures and finally by direct industrial data under deviant conditions. Where an unfortunate event is a concern, it also provides an opportunity to ponder and to evolve at various levels. Operational simulation of any such incident may help in getting a deep insight and thus to take accurate countermeasures. One such attempt is done in this work. A boiler accident has been reported. The complete response of the controllers and interlockings/trip system is imitated. The obtained results were compared with the chain of events that took place. © 2019 American Institute of Chemical Engineers Process Saf Prog: e12040 2019

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