Water quality control method and device for nuclear power plant, and nuclear power plant
US5398269A · kind A · utility
11Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1993 |
| Grant date | Mar 14, 1995 |
| Priority date | — |
| Expiry date | Mar 18, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A water quality control method for a nuclear power plant comprising the steps of maintaining the iron concentration in the feed water below 0.05 ppb by increasing iron removing rate at a condensed water purifying loop, shifting the pH of the reactor water below a pH of 6.8 determined at a room temperature by injecting carbon dioxide gas in the primary cooling system and further optionally reducing the dissolved oxygen concentration in the reactor water below 20 ppb by injecting hydrogen gas into the primary cooling system, whereby .sup.60 Co ion concentration in the primary cooling system is maintained low for a long interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.