IEC 61304:1994
Current
The latest, up-to-date edition.
Nuclear instrumentation - Liquid-scintillation counting systems - Performance verification
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English - French
31-05-1994
FOREWORD
INTRODUCTION
Clause
1 Scope and object
2 Normative reference
3 Definitions and symbols
3.1 Definitions
3.2 Symbols
4 Sources and materials
4.1 Radioactivity standard material
4.2 Check sources
4.2.1 Tritium check source
4.2.2 Carbon-14 check source
4.2.3 Background check source
4.2.4 Background sources (unquenched blank)
4.3 Expiration date of check sources
4.4 Materials
4.4.1 Organic-scintillator solutes
4.4.2 Radioactive material
4.4.3 Sample container
4.4.4 Purging gas
5 Operations and tests
5.1 General
5.2 Test procedures
5.2.1 Frequency of testing
5.2.2 Initial performance tests
5.2.3 Routine performance tests
6 Precautions
6.1 Measurement of radioactivity
6.1.1 Nuclear decay parameters
6.1.2 Short half-life with respect to counting time
6.1.3 Counting systems resolving time
6.2 Abnormal check-source count rate
6.2.1 Integrity of the check source
6.2.2 Photomultiplier tube and amplifier performance
6.3 Abnormal background check-source count rate
6.3.1 Contamination
6.3.2 High-activity sources
6.3.3 Chemiluminescence, phosphorescence and static
electricity
6.4 Miscellaneous precautions
6.4.1 Organic-scintillator solute purity
6.4.2 Background activity from low-potassium glass
6.4.3 Small-vial check sources
Annexes
A Statistical tests of reproducibility - The x2 test and
other criteria
B Performance monitoring log for liquid-scintillation
counter
C Physical properties of liquid scintillators and
requirements for toluene acceptance
Provides the user with a means of verifying the performance of typical liquid-scintillation courting systems.
| DevelopmentNote |
Also numbered as BS 7516(1995) (10/2005) Stability Date: 2018. (09/2017)
|
| DocumentType |
Standard
|
| Pages |
43
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Standards | Relationship |
| DIN IEC 61304:1996-11 | Identical |
| BS 7516:1995 | Nuclear instrumentation. Liquid-scintillation counting systems. Performance verification |
| IEC 60582:1977 | Dimensions of vials for liquid scintillation counting |
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