SEDL / STP / STP1550-EB / STP155020120006

Dosimetry Analyses of the Ringhals 3 and 4 Reactor Pressure Vessels

Kulesza, Joel A.
Westinghouse Electric Company, Cranberry Township, PA

Fero, Arnold H.
Westinghouse Electric Company, Cranberry Township, PA

Roudén, Jenny
Vattenfall/Ringhals AB, Väröbacka,

Green, Eva-Lena
Vattenfall/Ringhals AB, Väröbacka,

Pages: 14    Published: Aug 2012

Download this paper for $25 PDF (1.3M)          View License Agreement
Abstract

A comprehensive series of neutron dosimetry measurements consisting of surveillance capsules, reactor pressure vessel cladding samples, and ex-vessel neutron dosimetry has been analyzed and compared to the results of three-dimensional, cycle-specific neutron transport calculations for the Ringhals Unit 3 and Unit 4 reactors in Sweden. The comparisons show excellent agreement between calculations and measurements. The measurements also demonstrate that it is possible to perform retrospective dosimetry measurements using the ⁹³Nb (n,n′) ^93mNb reaction on samples of 18-8 austenitic stainless steel with only trace amounts of elemental niobium.