Title:
【発明の名称】加圧水型原子炉におけるスラッジ除去方法
Document Type and Number:
Japanese Patent JP2003529048
Kind Code:
A
Abstract:
A novel method of removing metal-oxide sludge deposits from the secondary side of a pressurized water nuclear steam generator as the nuclear steam generator is brought off-line, at a temperature of about 100 °C to 177 °C (212 °F to 350 °F) is disclosed. The method comprises injecting into the water of the secondary side of a pressurized water nuclear steam generator, as it is brought off-line, a polymeric dispersant represented by structural formula (I): wherein R1 is a lower alkyl of from 1 to about 6 carbon atoms, and x = OH or OM wherein M is a cation.
Inventors:
Bergmeyer, Paul Earl
Application Number:
JP2001516304A
Publication Date:
September 30, 2003
Filing Date:
August 04, 2000
Export Citation:
Assignee:
Bets Dearborn, Inc.
International Classes:
G21C19/307; C11D3/37; C11D11/00; F22B37/48; F28G9/00; G21D1/00; G21F9/00; G21F9/28; (IPC1-7): G21C19/307; G21D1/00; G21F9/28
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)