RU2013152578A - METHOD FOR CHEMICAL CLEANING AND DEACTIVATION OF CIRCUITS OF RESEARCH AND ENERGY REACTORS COOLED WITH PRESSURE WATER - Google Patents
METHOD FOR CHEMICAL CLEANING AND DEACTIVATION OF CIRCUITS OF RESEARCH AND ENERGY REACTORS COOLED WITH PRESSURE WATER Download PDFInfo
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- RU2013152578A RU2013152578A RU2013152578/06A RU2013152578A RU2013152578A RU 2013152578 A RU2013152578 A RU 2013152578A RU 2013152578/06 A RU2013152578/06 A RU 2013152578/06A RU 2013152578 A RU2013152578 A RU 2013152578A RU 2013152578 A RU2013152578 A RU 2013152578A
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- research
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- chemical cleaning
- oedp
- ammonia
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- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Способ химической очистки и дезактивации контуров исследовательских и энергетических реакторов, охлаждаемых водой под давлением, водными растворами оксиэтилидендифосфоновой (ОЭДФ) кислоты, отличающийся тем, что обработку контура в сборе осуществляют 5÷20%-ными растворами ОЭДФ кислоты, нейтрализованными до величин рН 2,0÷2,9 аммиаком, или калиевой, или натриевой щелочью при температурах 55÷95°C, а по достижению постоянного значения величины рН (что соответствует окончанию процесса растворения рыхлой части железоокисных отложений) в контур вводят при циркуляции концентраты калиевой или натриевой щелочи или аммиака для создания в растворе величины рН 8,0÷8,5.The method of chemical cleaning and decontamination of the circuits of research and power reactors, cooled with water under pressure, with aqueous solutions of hydroxyethylidene diphosphonic (OEDP) acid, characterized in that the complete circuit is treated with 5-20% OEDP solutions of acid, neutralized to pH 2.0 ÷ 2.9 ammonia, or potassium, or sodium alkali at temperatures of 55 ÷ 95 ° C, and upon reaching a constant pH value (which corresponds to the end of the dissolution of the loose part of the iron oxide deposits) into the circuit in odyat while circulating concentrates potassium or sodium hydroxide or ammonia in solution to create a pH 8.0 ÷ 8.5.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2013152578/06A RU2558732C2 (en) | 2013-11-26 | 2013-11-26 | Method for chemical treatment and deactivation of pressured water-cooled research and power reactor circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2013152578/06A RU2558732C2 (en) | 2013-11-26 | 2013-11-26 | Method for chemical treatment and deactivation of pressured water-cooled research and power reactor circuits |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2013152578A true RU2013152578A (en) | 2015-06-10 |
| RU2558732C2 RU2558732C2 (en) | 2015-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2013152578/06A RU2558732C2 (en) | 2013-11-26 | 2013-11-26 | Method for chemical treatment and deactivation of pressured water-cooled research and power reactor circuits |
Country Status (1)
| Country | Link |
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| RU (1) | RU2558732C2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH386450A (en) * | 1961-05-13 | 1965-01-15 | Borg Holding Ag | Process for the chemical cleaning and treatment of devices, in particular steam generators |
| SU1366857A1 (en) * | 1986-07-03 | 1988-01-15 | Производственное Энергетическое Объединение "Алтайэнерго" | Method of regenerating washing solution on the basis of ethylenediaminetetraacetic acid or salts thereof |
| SU1746203A1 (en) * | 1990-06-04 | 1992-07-07 | Всесоюзный Научно-Исследовательский Институт Горной Механики Им.М.М.Федорова | Method of cleaning heat exchange surfaces from carbonate deposits |
| RU2303226C1 (en) * | 2005-11-01 | 2007-07-20 | Федеральное государственное унитарное предприятие "Научно-исследовательский технологический институт им. А.П. Александрова" | Method for washing a steam generator |
| RU2313053C1 (en) * | 2006-05-18 | 2007-12-20 | Открытое акционерное общество "Всероссийский дважды ордена Трудового Красного Знамени теплотехнический научно-исследовательский институт" (ОАО "ВТИ") | Method for steam-chemical cleaning of internal surfaces of boiler pipes from precipitations |
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2013
- 2013-11-26 RU RU2013152578/06A patent/RU2558732C2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| RU2558732C2 (en) | 2015-08-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20181127 |