Power Plant Remaining Life Evaluation

Article Preview

Abstract:

The present paper describes the development of a monitoring, analysis and diagnosis system of power plant equipments based on strain measurements. The objective is to help companies increase availability and reduce maintenance costs. The aim is the integrity evaluation of a main steam and a hot reheat steam piping through inspection, strain monitoring and computational diagnosis. The benefits are, among others, reduction in the uncertainty of the remaining life prediction and reduction of work, through process automation and integration and real time monitoring (through the Internet) of the operational condition of the equipment. Thus, greater confidence and availability of the monitored generating unit is sought as well as cost reduction as a consequence of reduced frequency of unnecessary unit stops and greater speed in decision making due to more precise follow up of the operational condition of the target-equipment and of its remaining life.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

232-242

Citation:

Online since:

October 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] H. C. Furtado et al, Integrity Evaluation of Industrial Plant Equipment Based on Inspection, Monitoring and Computational Diagnosis, Proceedings of The 12th World Multi-Conference on Systemics, Cybernetics and Informatics. Orlando (2008), 50-54.

Google Scholar

[2] H. C. Furtado, I. May, Modelling of creep damage to estimate remaining life, Materials Science and Engineering. A234-236, (1997), 87-90.

DOI: 10.1016/s0921-5093(97)00217-7

Google Scholar

[3] F.R. Larson, J. Miller, A Time Temperature Relationship for Rupture and Creep Stress, Trans. ASME. V.74; (1952), 765.

Google Scholar

[4] ASME Rules for Construction of Power Boilers, Section I; 1997.

Google Scholar

[5] E.L. Robinson, Effect of Temperature variation on the long time Rupture Stress of Steel; Trans ASME. V. 74; (1952), 777-781.

DOI: 10.1115/1.4015918

Google Scholar

[6] L.H. Toft, R.A. Marsden, Structural Processes in Creep, Iron & Steel Institute. Special Report No. 70; London; (1961), 238-244.

Google Scholar

[7] F.C. Monkman and N.J. Grant, An Empirical Relationship Between Rupture Life and Minimum Creep Rate in Creep-Rupture Tests, Proc. ASTM. Vol 56, (1956), 593–605.

Google Scholar

[8] R. Viswanathan, Damage Mechanisms and Life Assessment of High-Temperature Components, ASM International, New York, 1993.

Google Scholar

[9] ASTM E 1319-98, Standard Guide for High-Temperature Static Strain Measurement,. (Reapproved 2003).

Google Scholar

[10] B. Baumann, M. Schulz, Long-time high temperature strain gauge measurements on pipes and dissimilar welds for residual lifetime evaluation. Nuclear Engineering a Design. 130, (1991), 383-388.

DOI: 10.1016/0029-5493(91)90230-f

Google Scholar

[11] High Temperature Strain Gauging – Technical Update Report, EPRI Project Manager, 2005.

Google Scholar