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1. US20090141850 - PRESSURIZED WATER REACTOR PRESSURIZER HEATER SHEATH

Office United States of America
Application Number 12323540
Application Date 26.11.2008
Publication Number 20090141850
Publication Date 04.06.2009
Publication Kind A1
IPC
G21C 1/00
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
CNUCLEAR REACTORS
1Reactor types
G21C 1/09
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
CNUCLEAR REACTORS
1Reactor types
04Thermal reactors
06Heterogeneous reactors, i.e. in which fuel and moderator are separated
08moderator being highly pressurised, e.g. boiling-water reactor, integral-superheat reactor, pressurised-water reactor
09Pressure regulating arrangements, i.e. pressurisers
G21C 1/08
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
CNUCLEAR REACTORS
1Reactor types
04Thermal reactors
06Heterogeneous reactors, i.e. in which fuel and moderator are separated
08moderator being highly pressurised, e.g. boiling-water reactor, integral-superheat reactor, pressurised-water reactor
Applicants Westinghouse Electric Company, LLC
Inventors Hoffmann Christopher L.
Agents WESTINGHOUSE ELECTRIC COMPANY, LLC
Title
(EN) PRESSURIZED WATER REACTOR PRESSURIZER HEATER SHEATH
Abstract
(EN)

A pressurizer whose heater sheaths are conditioned to reduce the residual stresses resulting from cold working during manufacture. After material conditioning, the heater sheath undergoes a surface conditioning treatment to add outer surface compressive stresses.