Technical Basis For Wash Water Inhibitor Levels (U)
- Savannah River Site (SRS), Aiken, SC (United States). Savannah River Technology Center (SRTC)
A review was conducted of waste tank operating experience, relevant SRTC laboratory testing, and corrosion literature data to determine safe concentrations of corrosion inhibitors for ITP and ESP wash water. Based on this review, it is concluded that hydroxide alone at pH 12 in not sufficient to inhibit the wash water and prevent pitting. Nitrite is required for adequate protection. Wash water must contain at least 0.01 M (0.17 g/L or 170 ppm) hydroxide and 0.011 M (0.5 g/L or 500 ppm) nitrite to ensure that the tank wall and cooling coils will be protected from pitting corrosion. Operational Safety Requirements for ITP and future Process Requirements for ESP should incorporate these minimum hydroxide and nitrite concentrations.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- USDOE Office of Environmental Management (EM)
- DOE Contract Number:
- 89303321CEM000080
- OSTI ID:
- 2281589
- Report Number(s):
- WSRC--TR-93-00437
- Country of Publication:
- United States
- Language:
- English
Similar Records
Alternative washing strategy during in-tank precipitation processing
Alternative washing strategy during in-tank precipitation processing