Life extensions of existing power plants -- Assessment and monitoring with personal computer
Conference
·
OSTI ID:20018830
In many industrial countries of the World the marginal conditions for the construction and use of fossil-fired power plants changed. Location problems as well as lengthy and protracted permitting procedures for new plants revealed the need for a method for the extension of the service life of existing plants. Owner of power plants show interest in operating their power plants units for 15--25 years exceeding their design period. Thus a service life assessment including the investigation of the steps necessary for NO{sub x} reduction and desulfurization certainly shows service life extension is an alternative to the construction of a new power plant. Moreover, this investigation can increase the plant reliability. For the life extension of a power plant at first the assessment of the actual condition is of importance. The components relevant for the service life are selected from such parts which are subjected e.g. to weathering, wear, temperatures above 450 C and alternating expansion stresses taking into account the present operating loads and experiences. Generally, the components to be considered critical have to be subjected to a special test. Their actual condition is determined in detail by means of check calculation and tests. For the inspection of creep-stressed components first a check calculation of the components is carried out. It has to be admitted that these calculations, however, can have a certain degree of inaccuracy due to various criteria which can be determined partly by tests. To minimize the above mentioned uncertainties to a large extent one is forced to thread other paths to obtain information about the actual condition of the component. An important measure is the visual check of the components and non destructive tests.
- Research Organization:
- Babcock Kraftwerkstechnik GmbH, Oberhausen (DE)
- OSTI ID:
- 20018830
- Report Number(s):
- CONF-9806214--
- Country of Publication:
- United States
- Language:
- English
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