FIELD: decontaminating seam generators of pressurized-water reactors.
SUBSTANCE: proposed method includes decontamination of steam generator using aqueous solution of ethylene-diamine-tetra-acetic acid, reducer, and leaching agent. Hydrazine and/or formaldehyde is proposed for use as reducer and morpholine, as leaching agent, molar concentration of morphine being chosen to equal that of ethylene-diamine-tetra-acetic acid as a minimum; proportion between hydrazine and/or formaldehyde and ethylene-diamine-tetra-acetic acid is from 1 : 6 to 1 : 1.
EFFECT: enhanced decontamination efficiency, reduced wear of base metal without corrosion inhibitor additive.
5 cl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF CLEANING AND REMOVING MAGNETITE-CONTAINING DEPOSITS FROM THERMAL POWER PLANT OVERHEAD TANK | 2005 |
|
RU2360200C2 |
| STEAM GENERATOR WASHING METHOD | 1999 |
|
RU2153644C1 |
| METHOD OF REMOVING DEPOSITS CONTAINING MAGNETITE AND COPPER FROM CONTAINERS OF INDUSTRIAL AND ELECTRICAL INSTALLATIONS | 2008 |
|
RU2453636C2 |
| METHOD OF CONTROLLING CORROSION RATE OF EQUIPMENT OF TECHNOLOGICAL CIRCUITS OF NUCLEAR POWER PLANTS | 2017 |
|
RU2705565C1 |
| METHOD OF CLEANING THE HEAT EXCHANGE SURFACE OF ATOMIC POWER STATION STEAM GENERATOR WITH WATER-COOLED POWER REACTOR (ITS VERSIONS) | 1991 |
|
RU2011948C1 |
| METHOD FOR CHEMICAL TREATMENT AND DEACTIVATION OF PRESSURED WATER-COOLED RESEARCH AND POWER REACTOR CIRCUITS | 2013 |
|
RU2558732C2 |
| STEAM GENERATOR RINSING METHOD | 2001 |
|
RU2203462C1 |
| PROCESS OF STEAM GENERATOR WASHING | 2002 |
|
RU2216701C1 |
| METHOD FOR WASHING A STEAM GENERATOR | 2005 |
|
RU2303226C1 |
| METHOD FOR PRODUCING REFINED SILVER FROM INTERMEDIATE PRODUCTS OF PRECIOUS METAL PRODUCTION CONTAINING SILVER IN THE FORM OF CHLORIDE | 2021 |
|
RU2779554C1 |
