On-Site Test of Filters in Nuclear Facilities Using Radioactive Sodium Chloride ((24)Na)-Aerosol and Methyl Iodide ((131)I)

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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 Na24Cl-aerosol and charcoal filters with I131CH3. Normally samples of 1 mCi are used. Penetrations 1 - efficiency can be determined with a relative uncertainty of 10-15.

Author(s):
Heidam, N. Z. ; Hansen, K. A. ; Fenger, J. ; Flyger, H. ; Jensen, P. H.
Author Organization(s):
RISOE NATIONAL LAB ROSKILDE (DENMARK)
Supplementary Note:
ISBN 87-550-1184-5. ISSN 0106-2840.
Pagination:
0043

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
RISOE-R-532
Monitor Series:
RISOE
 Subject Terms
Joint Capability Areas:
JCA_4.5.4_Requirements Definition; JCA_4.5_Operational Contract Support; JCA_5_Command and Control
Communities of Interest:
Biomedical
Descriptor(s):
*RADIOACTIVE MATERIALS, *AIR FILTERS, PENETRATION, SAMPLING, LABORATORIES, SODIUM CHLORIDE, RADIOACTIVE ISOTOPES, DENMARK, TRACER STUDIES, CHARCOAL, IODIDES, REACTOR SAFETY SYSTEMS, TEST METHODS, AEROSOLS, AIR FLOW
Field(s)/Group(s):
Nuclear Radiation Shielding, Protection and Safety
Keyword(s):
METHYL IODIDES, CHARCOAL FILTERS
Report Date:
1986 Feb 01