Performance evaluation of the pilot-scale, double-shell tank ventilation system using simulated aerosol streams

Technical Report · Fri Dec 01 00:00:00 EST 1989

DOI:https://doi.org/10.2172/5235363· OSTI ID:5235363

Brouns, T M; Peterson, M E

Radioactive waste slurries are currently being stored in underground tanks on the Hanford Site. The slurries that are being stored in the double-shell tanks (DSTs) are various mixtures of radioactive solids, liquids, and aqueous wastes. The tanks must be maintained at a negative pressure relative to atmospheric pressure to safeguard against pressurization and the subsequent leakage of entrained radioactive aerosols to the environment. A ventilation system must be capable of withdrawing the total volume of off gas generated from the tanks while maintaining the tanks at a negative pressure. Westinghouse Hanford Company (WHC) has identified a need to improve the efficiency of the ventilation system being used on the tank farms to meet the more restrictive release limits for radioactive isotopes. Kaiser Engineers Hanford Company (KEH) has been contracted by WHC to design the new ventilation system for the existing tank farms. WHC contracted the Pacific Northwest Laboratory (PNL) to fabricate and test the prototypic pilot-scale design prior to finalizing the design of the ventilation system. The PNL has conducted tests to determine (1) the effectiveness of the system for removal of vapors condensable at 35{degrees}F, (2) the effectiveness for removal of soluble and insoluble aerosols, and (3) the life span of the mist eliminators to be used in the new system. The results of extensive testing of the pilot-scale system with condensables and both soluble and insoluble aerosols are presented in this report. 7 refs., 25 figs., 8 tabs.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5235363
• Report Number(s): PNL-7188; ON: DE90004337
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
LEAKS
MINIMIZATION
RADIOACTIVE WASTES
UNDERGROUND STORAGE
TANKS
VENTILATION SYSTEMS
AEROSOLS
FLOW RATE
HUMIDITY
PERFORMANCE TESTING
RECOMMENDATIONS
REMOVAL
SLURRIES
TITANIUM OXIDES
CHALCOGENIDES
COLLOIDS
CONTAINERS
DISPERSIONS
MATERIALS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
RADIOACTIVE MATERIALS
SOLS
STORAGE
SUSPENSIONS
TESTING
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WASTES
052002* - Nuclear Fuels- Waste Disposal & Storage