METHODS OF REUSING A CLEANING SOLUTION

• Main Authors: LITTLE MICHAEL J, VARRIN ROBERT D
• Format: Patent
• Language: English; Korean
• Published: 14.02.2020
• Subjects: BLASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLEANING; CLEANING IN GENERAL; CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE ORHEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS; CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR; DIFFUSION TREATMENT OF METALLIC MATERIAL; HEAT EXCHANGE IN GENERAL; HEATING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; PERFORMING OPERATIONS; PHYSICS; PREVENTION OF FOULING IN GENERAL; PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT; TRANSPORTING; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; WEAPONS

핵 증기 발생기 (또는 다른 용기)로부터 침착물을 제거하는 데 이미 이용되었던 수성 세정 용액을 증기 발생기로부터 외부 용기로 옮긴 후에 재이용한다. 소모된 세정 용액은 재구성되어 동일한 증기 발생기 또는 상이한 증기 발생기의 추가의 세정에서 재이용될 수 있다. 세정 용액으로 달성되는 상이한 세정들은 동일한 유형 또는 상이한 유형 (예를 들어, 철 산화물 제거 및/또는 구리 제거)일 수 있다. An aqueous cleaning solution that has been previously used to remove deposits from a nuclear steam generator (or other vessel) is reused after being transferred from the steam generator into an external vessel. The spent cleaning solution may be reconditioned and reused in a further cleaning of the same steam generator or a different steam generator. The different cleanings being accomplished by the cleaning solution may be of the same type or different types (e.g., iron oxide removal and/or copper removal).