DIII-D dust particulate characterization (June 1998 Vent)
- Lockheed Martin Idaho Technologies Company
Dust is a key component of fusion power device accident source term. Understanding the amount of dust expected in fusion power devices and its physical and chemical characteristics is needed to verify assumptions currently used in safety analyses. An important part of this safety research and development work is to characterize dust from existing experimental tokamaks. In this report, the authors present the collection, data analysis methods used, and the characterization of dust particulate collected from various locations inside the General Atomics DIII-D vacuum vessel following the June 1998 vent. The collected particulate was analyzed at the Idaho National Engineering and Environmental Laboratory (INEEL). Two methods were used to collect particulate with the goal of preserving the particle size distribution and physical characteristics of the particulate. Choice of collection technique is important because the sampling method used can bias the particle size distribution collected. Vacuum collection on substrates and adhesion removal with metallurgical replicating tape were chosen as non-intrusive sampling methods. Seventeen samples were collected including plasma facing surfaces in lower, upper, and horizontal locations, surfaces behind floor tiles, surfaces behind divert or tiles, and surfaces behind ceiling tiles. The results of the analysis are presented.
- Research Organization:
- Idaho National Engineering and Environmental Lab., Idaho Falls, ID (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC07-94ID13223
- OSTI ID:
- 752359
- Report Number(s):
- INEEL/EXT--99-00095
- Country of Publication:
- United States
- Language:
- English
Similar Records
Collection and Characterization of Particulate from the Tore Supra Tokamak (Dec. 1999 Vent)
Tokamak dust particle size and surface area measurement
Related Subjects
ACCIDENTS
ADHESION REMOVAL
DATA ANALYSIS
DIII-D VACUUM VESSEL
DOUBLET-3 DEVICE
DUST
DUSTS
FUSION POWER DEVICE
PARTICLE SIZE
PARTICLE SIZE DISTRIBUTION
PARTICULATE
PHYSICAL CHARACTERISTICS
PLASMA FACING
SAFETY ANALYSES
SAFETY ANALYSIS
SAMPLING
SOURCE TERMS
TOKAMAKS
VACUUM COLLECTION
VACUUM SYSTEMS