On-Site Test of Filters in Nuclear Facilities Using Radioactive Sodium Chloride ((24)Na)-Aerosol and Methyl Iodide ((131)I)
Abstract
The nuclear facilities at Risoe National Laboratory are equipped with high-efficiency filters to protect the environment from routine or accidental releases of radioactive material. The filter efficiency must be tested regularly and a method for on-site control is described. It is based on injection of a radioactive sample in the filter duct, followed by sampling before and after the filter. HEPA-filters are tested with a Na(24)Cl-aerosol and charcoal filters with I(131)CH3. Normally samples of 1 mCi are used. Penetrations (1 - efficiency) can be determined with a relative uncertainty of 10-15%.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1986
- Accession Number
- ADB105020
Entities
People
- H. Flyger
- J. Fenger
- K. A. Hansen
- N. Z. Heidam
- P. H. Jensen