Results 111 to 120 of about 213 (134)

Adaptive, online models to detect and estimate gross error in SPNDs

2017 Indian Control Conference (ICC), 2017
In-core flux measurement is critical for monitoring and power regulation of a large core nuclear reactor. Self Powered Neutron Detectors (SPNDs) are used for measuring the neutron flux in a nuclear reactor. In this paper we propose an online method for SPND gross error detection, identification and estimation.
Arindam Bhattacharyya, Vivek Yogi, Sugandha Singla, Mani Bhushan, Mahendra G. Kelkar, Akhilanand P. Tiwari, Mahitosh Pramanik, Madhu N. Belur   +7 more
openaire   +1 more source

Performance test of SPND neutron detector and neutron flux mapping of Kartini reactor core

AIP Conference Proceedings
Antariksawan Anhar Riza
exaly   +2 more sources

A method for prompt calculation of neutron flux from measured SPND currents

Annals of Nuclear Energy, 1997
Abstract A new, approximate method is given to calculate the in-core flux from the current of SPND s, with a delay of only a few seconds. The stability of this stepwise algorithm is proven to be satisfactory, and the results of tests performed both on synthetic and on real data are presented.
Katalin Kulacsy, Iván Lux
openaire   +1 more source

Instrumentation neutronique du réacteur EPR - Excore – SPND – AMS

Génie nucléaire, 2014
La surete du coeur en fonctionnement est liee a des criteres portant sur la generation locale de chaleur et donc a la distribution de puissance. Pour evaluer cette distribution, le reacteur EPR s'appuie sur plusieurs types de detecteurs neutroniques : chambres d'ionisation et compteurs proportionnels hors de la cuve, detecteurs fixes collectrons au ...
openaire   +1 more source

Design of discrete-time Kalman filter based delay compensator for Rhodium-103 SPND

2018 Indian Control Conference (ICC), 2018
Rhodium-103 Self-Powered Neutron Detectors (SPNDs) are used in typical Pressurized Water Reactors (PWRs) for flux measurement. They are slow responding neutron detectors. The slow response of Rhodium-103 SPND restricts its direct use for monitoring, control and determination of parameters like neutron flux distribution, local flux peaking.
Tarun Mutneja, T. U. Bhatt, A. P. Tiwari, S. Jain, K. Nathani, S. K. Sen   +5 more
openaire   +1 more source

VVER Thermal Power Measured Using the Readings of Rhodium Self-powered Neutron Detector (SPND)

Physics of Atomic Nuclei, 2019
A procedure for determining the linear heat generation rate in a fuel assembly of VVER reactor at the location of a rhodium self-powered neutron detector (SPND) and verification of this procedure are discussed. A method of measurements of the VVER thermal power based on SPND readings is described.
A. Yu. Kurchenkov, A. I. Kovel, V. A. Mil’to, N. V. Mil’to, D. N. Skorohodov, N. V. Lipin, D. V. Vorob’eva, V. M. Chapaev, V. A. Khvatov   +8 more
openaire   +1 more source

Flux estimation from Vanadium and Cobalt Self Powered Neutron Detectors (SPNDs): Nonlinear exact inversion and Kalman filter approaches

2012 American Control Conference (ACC), 2012
Self Powered Neutron Detectors (SPNDs), which are widely used in a nuclear reactor for flux measurement, typically have different types of dynamics based on their emitter material: one delayed, second prompt and possibly nonlinear response characteristics. The measurement from the SPNDs hence need compensation to obtain the actual input flux.
Krishnan Srinivasarengan, Laxman Mutyam, Madhu N. Belur, Mani Bhushan, A. P. Tiwari, M. G. Kelkar, M. Pramanik   +6 more
openaire   +1 more source

Numerical analysis of the space charge effect in SPNDs based on the charge conservation principle

Journal of Instrumentation
Abstract Low-energy electrons emitted from self-powered neutron detectors(SPNDs) typically induce the space charge effect, attributed to the intrinsically high resistivity of insulator materials. As a pivotal phenomenon in SPND theoretical simulations, this effect directly impacts both the prediction accuracy of the response
Y. Zhou, Z.Y. Liu, L.Z. Cao, L.P. Wang, R.Z. Shao, H.Y. Peng, H.C. Wu   +6 more
openaire   +1 more source

Denoising SPND signal by discrete wavelet analysis for efficient power feedback in regulating system of PHWRs under noisy environment

2011 2nd National Conference on Emerging Trends and Applications in Computer Science, 2011
This paper aims to denoise a neutron power sensor data which is the output of Self Powered Neutron Detector (SPND) in each of the Liquid Zone Compartments (LZC) in a nuclear reactor core. Noisy data measured over long period is analyzed with different types of wavelets by one dimensional Discrete Wavelet Transform (DWT) technique to investigate the ...
Basudev Majumder, Saptarshi Das, Indranil Pan, Shantanu Das, Amitava Gupta   +4 more
openaire   +1 more source

A comparative study of Kalman filter and Linear Matrix Inequality based H infinity filter for SPND delay compensation

Annals of Nuclear Energy, 2016
Abstract This paper deals with delay compensation of vanadium Self Powered Neutron Detectors (SPNDs) using Linear Matrix Inequality (LMI) based H-infinity filtering method and compares the results with Kalman filtering method. The entire study is established upon the framework of neutron flux estimation in large core Pressurized Heavy Water Reactor ...
TAMBOLI, PK, DUTTAGUPTA, SP, ROY, K
openaire   +2 more sources