Removal of deuterium from flowing nitrogen by SAES St 198
Testing was conducted to investigate the ability of a metal getter, SAES St 198, to remove D[sub 2] from flowing nitrogen. This getter is being considered for applications involving removal of tritium at low concentrations from glovebox atmospheres and inert or nitrogen process streams. This document reports results from tests involving flow of 107 ppM D[sub 2] in nitrogen through a packed bed of St 198 getter granules (1.02 mm average dia) at a gas flow rate of 400 std. cm[sup 3][center dot]min[sup [minus]1]. The first of two tests (Run 1) was conducted at a temperature of 350[degrees]C, and the getter reactor contained 9.7 grams of getter. The second test (Run 2) was at 250[degrees]C, and the reactor contained 5.1 grams of getter. The tests involved continuous flow of the D[sub 2]/N[sub 2] mixture into the getter bed for several days, during which the inlet and outlet streams were analyzed for D[sub 2] by mass spectrometry at 12 h intervals. For both runs, testing continued until nearly complete breakthrough of deuterium was observed. During Run 1 no D[sub 2] was detected in the getter bed exit stream for 122 h, and during Run 2, no D[sub 2] was detected in the exit gas for 84 h. The lower detection limit of the mass spectrometer was 0.5 ppM, so the decontamination factor (DF) for both runs was at least 200. Successful D[sub 2] removal from nitrogen in the tests indicates that further investigation of the stripping ability of St 198 with tritium should be pursued.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 6577663
- Report Number(s):
- WSRC-TR-92-603; ON: DE93012795
- Country of Publication:
- United States
- Language:
- English
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11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
CONTROLLED ATMOSPHERES
DECONTAMINATION
DEUTERIUM
REMOVAL
GLOVEBOXES
TRITIUM
CHELATES
EXPERIMENTAL DATA
FEASIBILITY STUDIES
FLOW RATE
IRON COMPLEXES
MASS SPECTROSCOPY
NITROGEN
SPECIFICATIONS
ZIRCONIUM COMPLEXES
ATMOSPHERES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CLEANING
COMPLEXES
DATA
ELEMENTS
EQUIPMENT
HYDROGEN ISOTOPES
INFORMATION
ISOTOPES
LABORATORY EQUIPMENT
LIGHT NUCLEI
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
SPECTROSCOPY
STABLE ISOTOPES
TRANSITION ELEMENT COMPLEXES
YEARS LIVING RADIOISOTOPES
420203* - Engineering- Handling Equipment & Procedures
054000 - Nuclear Fuels- Health & Safety