SYMPOSIA PAPER Published: 01 January 1993
STP12746S

Use of Subsize Specimens for Determination of Radiation Embrittlement of Operating Reactor Pressure Vessels

Source

This paper presents groundwork for determining the ductile-to-brittle transition temperature (DBTT) from subsize specimens (5 by 5 by 27.5 and 3 by 4 by 27.0 mm) and describes the correlation between the DBTT obtained from tests of standard Charpy specimens and subsize specimens. A method for taking samples from the inside surface of reactor pressure vessels and fabricating small specimens from them was developed in the USSR. This method is used to assess the effectiveness of pressure vessel recovery by annealing. Some results of the DBTT evaluation for the base and weld metal before and after recovery are given.

Author Information

Amayev, AD
I. V. Kurchatov Institute of Atomic Energy, Moscow, Russia
Badanin, VI
Central Research Institute of Structural Materials, St. Petersburg, Russia
Kryukov, AM
I. V. Kurchatov Institute of Atomic Energy, Moscow, Russia
Nikolayev, VA
Central Research Institute of Structural Materials, St. Petersburg, Russia
Rogov, MF
OKB “Gidropress,”, Podolsk, Moscow region, Russia
Sokolov, MA
I. V. Kurchatov Institute of Atomic Energy, Moscow, Russia
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Details
Developed by Committee: E10
Pages: 424–439
DOI: 10.1520/STP12746S
ISBN-EB: 978-0-8031-5250-2
ISBN-13: 978-0-8031-1869-0