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Experimental and Theoretical Dynamic Study of the Aagesta Nuclear Power Station

Abstract

The report presents a final review and summary of all dynamic investigations of the Aagesta nuclear power station. Special attention is paid to the final and unpublished experiments performed in 1965-66. These experiments are discussed and compared to the theoretical predictions. Transfer functions and step responses were measured by perturbations in reactivity and steam load. Three methods were used for transfer function measurements: step functions, trapeze waves and multifrequency functions based on the pseudo-random binary sequence (PRBS). From the frequency analysis we found that the different perturbation methods led to quite consistent results. For the Agesta application the PRBS method is demonstrated to be an accurate and practical method for obtaining experimental transfer functions. The step technique did not give satisfactory results for frequencies above approximately 0.01 Hz. From the static check of the model we may conclude that the experiments agree fairly well mutually and with theory. The measured reactivity coefficients tend to be smaller than the predicted ones. The predicted transients compare well with the measured ones. However, there is a tendency to more peaked power transients from the model. This is believed to be due to the assumption that the moderator could be regarded as one channel.  More>>
Publication Date:
Dec 15, 1969
Product Type:
Technical Report
Report Number:
AE-376
Resource Relation:
Other Information: 18 refs., 14 figs., 1 tab.
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; AGESTA REACTOR; TRANSFER FUNCTIONS; FREQUENCY ANALYSIS; REACTIVITY COEFFICIENTS; REACTOR STABILITY; DYNAMICS
OSTI ID:
20956177
Research Organizations:
AB Atomenergi, Nykoeping (Sweden)
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
TRN: SE0708622
Availability:
Commercial reproduction prohibited; OSTI as DE20956177
Submitting Site:
SWDN
Size:
44 pages
Announcement Date:
Dec 29, 2007

Citation Formats

Bliselius, P A, Vollmer, H, and Aakerhielm, F. Experimental and Theoretical Dynamic Study of the Aagesta Nuclear Power Station. Sweden: N. p., 1969. Web.
Bliselius, P A, Vollmer, H, & Aakerhielm, F. Experimental and Theoretical Dynamic Study of the Aagesta Nuclear Power Station. Sweden.
Bliselius, P A, Vollmer, H, and Aakerhielm, F. 1969. "Experimental and Theoretical Dynamic Study of the Aagesta Nuclear Power Station." Sweden.
@misc{etde_20956177,
title = {Experimental and Theoretical Dynamic Study of the Aagesta Nuclear Power Station}
author = {Bliselius, P A, Vollmer, H, and Aakerhielm, F}
abstractNote = {The report presents a final review and summary of all dynamic investigations of the Aagesta nuclear power station. Special attention is paid to the final and unpublished experiments performed in 1965-66. These experiments are discussed and compared to the theoretical predictions. Transfer functions and step responses were measured by perturbations in reactivity and steam load. Three methods were used for transfer function measurements: step functions, trapeze waves and multifrequency functions based on the pseudo-random binary sequence (PRBS). From the frequency analysis we found that the different perturbation methods led to quite consistent results. For the Agesta application the PRBS method is demonstrated to be an accurate and practical method for obtaining experimental transfer functions. The step technique did not give satisfactory results for frequencies above approximately 0.01 Hz. From the static check of the model we may conclude that the experiments agree fairly well mutually and with theory. The measured reactivity coefficients tend to be smaller than the predicted ones. The predicted transients compare well with the measured ones. However, there is a tendency to more peaked power transients from the model. This is believed to be due to the assumption that the moderator could be regarded as one channel. The dynamic experiments carried out at the Agesta nuclear power station demonstrate both the inherent stability and the safety of this plant.}
place = {Sweden}
year = {1969}
month = {Dec}
}