Dynamics of Crust Dissolution and Gas Release in Tank 241-SY-101

Rassat, Scot D.; Stewart, Charles W.; Wells, Beric E.; Kuhn, W.L.; Antoniak, Z.I.; Cuta, Judith M.; Recknagle, Kurtis P.; Terrones, Guillermo; Viswanathan, Vilayanur V.; Sukamto, J. H.; Mendoza, Donaldo P.

doi:10.2172/750394

Cited by 9 publications

(8 citation statements)

References 19 publications

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“…However, mixer pump operation over the next seven years allowed gas retention in and growth of the floating crust layer, which caused an accelerating waste level rise. By early 1999 the crust thickness had grown to 3 m (120 inches), and the waste level had risen to 434 inches, three feet above its postmitigation level of 398 inches (Rassat et al 2000). The waste had accumulated as much gas in the crust as it had released during some of its larger historic GREs.…”

Section: A Brief History Of Sy-i 01mentioning

confidence: 99%

“…Before the first transfer and dilution campaign in December 1999, the waste in SY-101 was arranged in three layers: a floating crust, a mixed-slurry suspension of solid particles and small bubbles in liquid, and a thin layer of loosely settled solids on the bottom (Rassat et al 2000). The crust consisted of four distinguishable sublayers.…”

Section: Initial Waste Conditionsmentioning

confidence: 99%

“…The estimated gas volume of 14,900 scf in the waste before the first transfer (Rassat et al 2000) contributed 31 inches to the waste level at a pressure of 1.3 atrn. Compared to this, the other effects discussed above are not significant.…”

Section: Gas Release and Level Change Reconciliationmentioning

confidence: 99%

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Results of Waste Transfer and Back-Dilution in Tanks 241-SY-101 and 241-SY-102

Mahoney¹,

Antoniak²,

Wb³

et al. 2000

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Section: A Brief History Of Sy-i 01mentioning

confidence: 99%

Section: Initial Waste Conditionsmentioning

confidence: 99%

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Results of Waste Transfer and Back-Dilution in Tanks 241-SY-101 and 241-SY-102

Mahoney¹,

Antoniak²,

Wb³

et al. 2000

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“…A model has been developed to simulate the effects of water dilution on SY-101 waste (Rassat et al 2000). The mass of free solids that will be dissolved for a given amount of added diluent is described in the form Am~~= R~m~(2.1)…”

Section: Estimating Free Solids From Sy-i 01mentioning

confidence: 99%

“…These results indicate that there would be no soluble SY-101 solids Ieft in SY-102 after the dilution. It is estimated that approximately 40 wt% of the free solids in SY-101 may be classified as insoluble (Kubic and Belooussov 1999;Rassat et al 2000). (') Therefore, a lower limit for the amount of SY-101 free solids in SY-102 is 40 wt% of the transferred free solids.…”

Section: Estimating Free Solids From Sy-i 01mentioning

confidence: 99%

The potential for buoyant displacement gas release events in Tank 241-SY-102 after waste transfer from Tank 241-SY-101

Wells¹,

Meyer²,

Chen³

2000

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Assessment of Physical Properties of Transuranic Waste in Hanford Single-Shell Tanks

Rassat¹,

Mahoney²,

Wells³

et al. 2003

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range from 70 to 85 wt%; the reported water content is somewhat higher in Tank T-111 (85 to 90 wt%) and lower in a few samples from T-201 (~65 wt%). Most of the data for bulk solids samples, a matrix of waste solids and interstitial liquid, show bulk densities of 1.15 to 1.30 g/mL, and the density generally increases with decreasing water content. The shear strength estimates obtained from the extrusion methods were compared with the water content and bulk density of waste samples from the same core segments. The shear strength and, to a lesser extent, the density show some tendency to decrease with increasing water, but significant scatter exists in the data. The physical properties of in situ and diluted SST TRU waste described in this report and summarized in the discussion above are tabulated in Table ES.1. In many cases, the expected range of properties is estimated from limited data. However, in those instances where data are available for many tanks and multiple locations within tanks, the data do not indicate major differences among individual tanks. Therefore, it appears reasonable to treat individual tank results as typical of Hanford SST TRU waste. Table S.1. Expected Range of Physical Properties of In Situ and Diluted SST TRU Waste Property Expected Range Comments Shear strength 200 to 2,000 Pa (majority of waste) 0 to 4,000 Pa (range, including liquid) Estimated from data obtained from core extrusions (Sections 3.1 and 3.2) and reported shear vane measurements (Section 4.1). Viscosity 2 to 25 cP at 10 s-1 2 to 15 cP at 100 s-1 Results for 1:1 dilution with water; higher viscosities expected for waste diluted less and at lower strain rates. Waste exhibited pseudoplastic rheology. Section 4.1. Waste settling ~0 vol% free liquid (1 G) 2 to 40 vol% free liquid (>1000 G, 1 hr) Undiluted waste, >200 Pa shear strength. Weaker waste (liquid in the extreme) is expected to produce more free liquid on settling. Section 4.2. Waste settling 5 to 25 vol% free liquid (1 G, ~2 days) 40 to 60 vol% free liquid (>1000 G, 1 hr) 1:1 diluted waste, >200 Pa shear strength prior to dilution. See comment above. Section 4.2. Waste settling 40 to 65 vol% free liquid (1 G, ~2 days) 70 to 85 vol% free liquid (>1000 G, 1 hr) 3:1 diluted waste, >200 Pa shear strength prior to dilution. See comment above. Section 4.2. Particle size, mean 7 to 70 µm (volume density) < 2 µm (number density) Section 4.3. Water content 70 to 85 wt% (majority of waste) 65 to 90 wt% (range) Section 5.1. Liquid Density ~1.05 g/mL Section 5.2 Bulk Density 1.15 to 1.3 g/mL (majority of waste) 1.1 to 1.4 g/mL (range) Section 5.2 vii

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Dynamics of Crust Dissolution and Gas Release in Tank 241-SY-101

Cited by 9 publications

References 19 publications

Results of Waste Transfer and Back-Dilution in Tanks 241-SY-101 and 241-SY-102

Results of Waste Transfer and Back-Dilution in Tanks 241-SY-101 and 241-SY-102

The potential for buoyant displacement gas release events in Tank 241-SY-102 after waste transfer from Tank 241-SY-101

Assessment of Physical Properties of Transuranic Waste in Hanford Single-Shell Tanks

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