PWR steam generator section cleaning procedure

摘要: The cleaning procedure consists of injecting a chemical solution into the secondary section steam generator (1) through one following circuits: normal feed circuit (8), emergency (10), or purging circuit, using reagent injection pump (21) set in branch circuit. is complexing agent containing ethylenediamine- tetraacetic acid, reducer such as hydrazine and corrosion inhibitor. It kept at predetermined temperature by circulating it with aid cooling water appropriate primary evacuated once pollutants have been dissolved. then rinsed demineralised from tank