Industrial technique
Abstract
Abstract In an illustrative embodiment of the invention, approximately 0.1 percent by weight of sodium silicate is added to an aqueous radioiodine absorbing and decay heat removing spray mixture for discharge within a nuclear reactor containment building. The radioactive decontamination fluid preferably includes 1 percent by weight of sodium thiosulfate, 1.22 percent by weight of boric acid and 0.528 percent by weight of sodium hydroxide in a water solution. The added sodium silicate allows less expensive aluminum components to be used within the containment building because it inhibits a corrosive chemical reaction between the aluminum and the sodium hydroxide. Without the inhibitor, the aluminum-hydroxide reaction would lead to a potentially explosive mixture of hydrogen and oxygen within the containment building.
Inventors
- 👤 F Pocock
- 👤 W Leedy
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |