Nondestructive Experimental Determination of the Pin-Power Distribution in Nuclear Fuel Assemblies

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Fältnamn	Indikatorer	Metadata
000		03283naa a2200421 4500
001		oai:DiVA.org:uu-77332
003		SwePub
008		060315s2005 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-773322 URI
024	7	a https://doi.org/10.13182/NT05-A36322 DOI
040		a (SwePub)uu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Jacobsson Svärd, Staffanu Uppsala universitet,Kärnfysik,Tillämpad kärnfysik4 aut0 (Swepub:uu)staffjac
245	1 0	a Nondestructive Experimental Determination of the Pin-Power Distribution in Nuclear Fuel Assemblies
264	1	c 2005
338		a print2 rdacarrier
520		a A need for validation of modern production codes with respect to the calculated pin-power distribution has been recognized. A nondestructive experimental method for such validation has been developed based on a tomographic technique. The gamma-ray flux distribution is recorded in each axial node of the fuel assembly separately, whereby the relative rod-by-rod content of the fission product 140Ba is determined. Measurements indicate that 1 to 2% accuracy (1 sigma) is achievable.A device has been constructed for in-pool measurements at reactor sites. The applicability has been demonstrated in measurements at the Swedish boiling water reactor (BWR) Forsmark 2 on irradiated fuel with a cooling time of 4 to 5 weeks. Data from the production code POLCA-7 have been compared to measured rod-by-rod contents of 140Ba. An agreement of 3.1% (1 sigma) has been demonstrated.It is estimated that measurements can be performed on a complete BWR assembly in 25 axial nodes within an 8-h work shift. As compared to the conventional method, involving gamma scanning of individual fuel rods, this method does not require the fuel to be disassembled nor does the fuel channel have to be removed. The cost per measured fuel rod is estimated to be an order of magnitude lower than the conventional method.
650	7	a NATURVETENSKAPx Fysikx Subatomär fysik0 (SwePub)103012 hsv//swe
650	7	a NATURAL SCIENCESx Physical Sciencesx Subatomic Physics0 (SwePub)103012 hsv//eng
653		a tomography
653		a Nuclear physics
653		a Kärnfysik
653		a Applied Nuclear Physics
653		a Tillämpad kärnfysik
653		a Fysik med inriktning mot tillämpad kärnfysik
653		a Physics with specialization in Applied Nuclear Physics
700	1	a Håkansson, Aneu Uppsala universitet,Kärnfysik,Tillämpad kärnfysik4 aut0 (Swepub:uu)aha03918
700	1	a Bäcklin, Andersu Uppsala universitet,Kärnfysik,Tillämpad kärnfysik4 aut0 (Swepub:uu)aba03918
700	1	a Osifo, Otasowieu Uppsala universitet,Kärnfysik4 aut0 (Swepub:uu)otosi193
700	1	a Willman, Christoferu Uppsala universitet,Kärnfysik4 aut0 (Swepub:uu)chwil425
700	1	a Jansson, Peter,d 1971-u Uppsala universitet,Kärnfysik,Tillämpad kärnfysik4 aut0 (Swepub:uu)petejans
710	2	a Uppsala universitetb Kärnfysik4 org
773	0	t Nuclear Technologyg 151:1, s. 70-76q 151:1<70-76x 0029-5450
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-77332
856	4 8	u https://doi.org/10.13182/NT05-A3632

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Av författaren/redakt...: Jacobsson Svärd, ...; Håkansson, Ane; Bäcklin, Anders; Osifo, Otasowie; Willman, Christo ...; Jansson, Peter, ...

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