An Improved Remainder Estimate for Use with the Integral Test

AbstractIntegral cross sections of the reactions 24Mg(n,p)24Na, 27Al(n,p)27Mg, 27Al(n,α)24Na, 58Ni(n,d + np)57Co and 60Ni(n,p)60Co were measured for the first time using the fast neutron spectrum of a TRIGA reactor extending from 0.5 to 20 MeV. The values obtained in this work were comparable with the recommended values for a pure 235U prompt fission spectrum. The measured integral value was utilized for integral test of excitation function of each reaction given in some data libraries, namely ENDF/B-VIII.0, TENDL-2017, IRDFF-1.05 and ROSFOND-2010. The integral measurements are generally consistent with the integrated values within 5 %, except for a few cases, e. g. the reaction 60Ni(n,p)60Co, where the data libraries appear to need improvement.

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Consistent Posttest Calculations for LOCA Scenarios in LOBI Integral Facility

Science and Technology of Nuclear Installations ◽

10.1155/2012/474162 ◽

2012 ◽

Vol 2012 ◽

pp. 1-16 ◽

Cited By ~ 2

Author(s):

F. Reventós ◽

P. Pla ◽

C. Matteoli ◽

G. Nacci ◽

M. Cherubini ◽

...

Keyword(s):

Experimental Data ◽

Mass Flow ◽

Scaling Factor ◽

Test Facility ◽

Data Bases ◽

Integral Test ◽

The Core ◽

Active Elements ◽

Accuracy Data

Integral test facilities (ITFs) are one of the main tools for the validation of best estimate thermalhydraulic system codes. The experimental data are also of great value when compared to the experiment-scaled conditions in a full NPP. The LOBI was a single plus a triple-loop (simulated by one loop) test facility electrically heated to simulate a 1300 MWe PWR. The scaling factor was 712 for the core power, volume, and mass flow. Primary and secondary sides contained all main active elements. Tests were performed for the characterization of phenomenologies relevant to large and small break LOCAs and special transients in PWRs. The paper presents the results of three posttest calculations of LOBI experiments. The selected experiments are BL-30, BL-44, and A1-84. They are LOCA scenarios of different break sizes and with different availability of safety injection components. The goal of the analysis is to improve the knowledge of the phenomena occurred in the facility in order to use it in further studies related to qualifying nodalizations of actual plants or to establish accuracy data bases for uncertainty methodologies. An example of procedure of implementing changes in a common nodalization valid for simulating tests occurred in a specific ITF is presented along with its confirmation based on posttests results.

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ICONE19-43123 Reduced Height Effect on the PWR's Integral Test Facility during Long Term Cooling

The Proceedings of the International Conference on Nuclear Engineering (ICONE) ◽

10.1299/jsmeicone.2011.19._icone1943_43 ◽

2011 ◽

Vol 2011.19 (0) ◽

pp. _ICONE1943-_ICONE1943

Author(s):

Yuquan Li ◽

Zishen Ye

Keyword(s):

Test Facility ◽

Integral Test ◽

Reduced Height

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The sub-bifractional Brownian motion

Studia Scientiarum Mathematicarum Hungarica ◽

10.1556/sscmath.50.2013.1.1231 ◽

2013 ◽

Vol 50 (1) ◽

pp. 67-121 ◽

Cited By ~ 1

Author(s):

Charles El-Nouty ◽

Jean-Lin Journé

Keyword(s):

Brownian Motion ◽

Integral Test ◽

Bifractional Brownian Motion

The sub-bifractional Brownian motion, which is a quasi-helix in the sense of Kahane, is presented. The upper classes of some of its increments are characterized by an integral test.

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