Catalytic decomposition of S sub 2 F sub 10 and its implications on sampling and detection from SF sub 6 -insulated equipment

Conference · Mon Jan 01 00:00:00 EST 1990

DOI:https://doi.org/10.1109/ELINSL.1990.109799· OSTI ID:7031805

Olthoff, J K; Van Brunt, R J; Herron, J T ^[1]; Sauers, I; Harman, G ^[2]

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1. National Inst. of Standards and Technology, Gaithersburg, MD (USA)
2. Oak Ridge National Lab., TN (USA)

Recent findings indicate that S{sub 2}F{sub 10} is unstable with respect to decomposition on a surface. This paper reports the first results of a study investigating the mechanisms and rates of surface decomposition of S{sub 2}F{sub 10} under various conditions. Initial results indicate that surface decomposition rates on stainless steel increase with increased water content, temperature, and surface-to-volume ratio, and with decreased gas pressure. The implications of these results for the preparation and storage of S{sub 2}F{sub 10} samples are discussed. Additionally, the use of this surface decomposition mechanism to enhance the detection sensitivity of small concentrations of S{sub 2}F{sub 10} in SF{sub 6} using a gas chromatograph/mass spectrometer (GC/MS) is investigated. Detection sensitivities of 1 ppM by volume (ppM{sub v}) of S{sub 2}F{sub 10} in SF{sub 6} are routinely achievable using this new technique. 14 refs., 8 figs.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7031805
• Report Number(s): CONF-9006135-1; ON: DE90008571
• Resource Relation: Conference: 1990 IEEE international symposium on electrical insulation, Toronto (Canada), 3-6 Jun 1990
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ELECTRICAL INSULATION
SULFUR FLUORIDES
DECOMPOSITION
STABILITY
AGING
CATALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COMPARATIVE EVALUATIONS
CONTAMINATION
DECAY
FLUORINE IONS
GASES
KINETICS
MAINTENANCE
MASS SPECTROSCOPY
MEASURING METHODS
MONEL
PERFORMANCE TESTING
PRESSURE EFFECTS
RECOMMENDATIONS
RELIABILITY
SAMPLING
SENSITIVITY
STAINLESS STEELS
SURFACE PROPERTIES
TEFLON
TEMPERATURE EFFECTS
WATER CHEMISTRY
ALLOYS
CHARGED PARTICLES
CHEMISTRY
FLUIDS
FLUORIDES
FLUORINATED ALIPHATIC HYDROCARBONS
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
HIGH ALLOY STEELS
IONS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
NICKEL ALLOYS
NICKEL BASE ALLOYS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLY
POLYETHYLENES
POLYTETRAFLUOROETHYLENE
SEPARATION PROCESSES
SPECTROSCOPY
STEELS
SULFUR COMPOUNDS
SYNTHETIC MATERIALS
TESTING
360604* - Materials- Corrosion
Erosion
& Degradation
426000 - Engineering- Components
Electron Devices & Circuits- (1990-)
400201 - Chemical & Physicochemical Properties
400101 - Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures