Published June 3, 1991 | Version v1
Report Restricted

Chemical cleaning of steam generators: application to Nogent 1

Creators

  • 1. Electricite de France (France)
  • 2. SOMAFER (France)
  • 3. Societe Franco-Americaine de Constructions Atomiques (FRAMATOME), 92 - Paris-La-Defense (France)

Description

EDF has patented a chemical cleaning process for PWR steam generators, based on the use of a mixture or organic acids in order to dissolve iron oxides and copper with a single solution and clean dented crevices. Qualification tests have permitted to demonstrate effectiveness of the solution and its innocuousness related to steam generator materials. The process, the licence of which belongs to SOMAFER RA and Framatome has been implemented in France at Nogent. The goal was to dissolve iron oxides allowing metallic particles, aggregated on the tubesheet, to be released and mechanically removed. The effectiveness was satisfactory and this treatment is to be extended to other units. (author)

Availability note (English)

MF available from INIS under the Report Number.

Files

Restricted

The record is publicly accessible, but files are restricted to users with access.

Additional details

Publishing Information

Imprint Pagination
13 p.
Report number
Risley-Trans--6064

INIS

Country of Publication
United Kingdom
Country of Input or Organization
United Kingdom
INIS RN
22077629
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Translation
Descriptors DEI
COPPER; CORROSION DENTING; EFFICIENCY; HEAT EXCHANGERS; IRON OXIDES; NOGENT SUR SEINE-1 REACTOR; ORGANIC ACIDS; PWR TYPE REACTORS; STEAM GENERATORS; SURFACE CLEANING; TUBES; VERIFICATION
Descriptors DEC
BOILERS; CHALCOGENIDES; CLEANING; DEFORMATION; ELEMENTS; ENRICHED URANIUM REACTORS; IRON COMPOUNDS; METALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; POWER REACTORS; REACTORS; SURFACE FINISHING; THERMAL REACTORS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; VAPOR GENERATORS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Notes
Translated from French.