Patent · US Active

Method for protecting components of a primary system of a boiling water reactor in particular from stress corrosion cracking

US9879351B2 · kind B2 · utility

0Cited by

7References

15Claims

0Family size

Assignee

AREVA GMBH · US

Inventors

Bernhard Stellwag · Nuremberg, DE
Wilfried Ruehle · Eppelheim, DE

Key dates

Filing date	Jun 10, 2013
Grant date	Jan 30, 2018
Priority date	—
Expiry date	Mar 18, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E30/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for protecting the components of the primary system of a boiling water reactor, especially against stress cracking corrosion, includes feeding a reducing agent into the primary coolant in order to reduce the number of substances having a oxidizing effect or in order to modify the electrochemical potential of the component surfaces covered with an oxide layer to negative values. An alcohol that can be oxidized in the conditions of a reactor is fed in as a reducing agent, preferably in a liquid form, into the primary coolant. The component surfaces are provided with a blank coating or a single intrinsic oxide coating.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.