Laser cleaning of steam generator tubing based on acoustic emission technology
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S.-X. Hou
Abstract
As a physical method, laser cleaning technology in equipment maintenance will be a good prospect. The experimental apparatus for laser cleaning of heat tubes in the steam generator was designed according to the results of theoretical analysis. There are two conclusions; one is that laser cleaning technology is attached importance to traditional methods. Which has advantages in saving on much manpower and material resource and it is a good cleaning method for heat tubes. The other is that the acoustic emission signal includes lots of information on the laser cleaning process, which can be used as real-time monitoring in laser cleaning processes. When the laser acts for 350 s, 100 % contaminants of heat tubes is cleaned off, and the sensor only receives weak AE signal at that time.
Kurzfassung
Als physikalische Methode hat die Laserreinigungstechnologie bei der Wartung von Betriebseinrichtungen gute Perspektiven. Die experimentelle Anordnung zur Laserreinigung der Heizrohre in einem Dampferzeuger wurde aufgrund der Ergebnisse einer theoretischen Analyse konzipiert. Danach kann gefolgert werden, dass die Laserreinigungstechnologie an Bedeutung gegenüber den traditionellen Methoden gewonnen hat, mit dem Vorteil, dass Personal- und Materialressourcen eingespart werden können. Zudem enthält das akustische Emissionssignal viele Informationen über das Laserreinigungsverfahren, die als Echt-Zeit-Monitoring während des Reinigungsverfahrens genutzt werden können. Beim Lasereinsatz sind nach 350 s 100 % aller Kontaminationen in den Heizrohren beseitigt und der Sensor empfängt dann nur noch ein schwaches akustische Emissionssignal.
References
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© 2015, Carl Hanser Verlag, München
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Articles in the same Issue
- Contents/Inhalt
- Contents
- Summaries/Kurzfassungen
- Summaries
- Technical Contributions/Fachbeiträge
- Considering the uncertainties in empirical correlations for vertical countercurrent flow limitation (CCFL) with TRACE
- 3RIP trip startup test simulation of TRACE/PARCS model for Lungmen ABWR under different power and flow conditions
- Development of a new analytic function expansion nodal code, HexDANM, for solving the neutron diffusion equation in hexagonal-Z geometry
- Laser cleaning of steam generator tubing based on acoustic emission technology
- Axial enrichment profile in advance nuclear energy power plant at supercritical-pressures
- Analysis of the small break loss of coolant accident in the VVER-1000/V446 reactor
- Thermal hydraulic analysis of reactivity accidents in MTR research reactors using RELAP5
- Depletion of Gadolinium burnable poison in a PWR assembly with high burnup fuel
- Nuclear model calculations on cyclotron production of 51Cr
- Radiotracer application for characterization of nuclear grade anion exchange resins Tulsion A-23 and Dowex SBR LC
- Solving the criticality problem with the reflected boundary condition for the triplet anisotropic scattering with the modified FN method
