IEC 61304 : 1.0

Table of Contents

FOREWORD<br>INTRODUCTION<br>Clause<br>1 Scope and object<br>2 Normative reference<br>3 Definitions and symbols<br>&nbsp;&nbsp;3.1 Definitions<br>&nbsp;&nbsp;3.2 Symbols<br>4 Sources and materials<br>&nbsp;&nbsp;4.1 Radioactivity standard material<br>&nbsp;&nbsp;4.2 Check sources<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.2.1 Tritium check source<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.2.2 Carbon-14 check source<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.2.3 Background check source<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.2.4 Background sources (unquenched blank)<br>4.3 Expiration date of check sources<br>4.4 Materials<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.4.1 Organic-scintillator solutes<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.4.2 Radioactive material<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.4.3 Sample container<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.4.4 Purging gas<br>5 Operations and tests<br>&nbsp;&nbsp;5.1 General<br>&nbsp;&nbsp;5.2 Test procedures<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.2.1 Frequency of testing<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.2.2 Initial performance tests<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.2.3 Routine performance tests<br>6 Precautions<br>&nbsp;&nbsp;6.1 Measurement of radioactivity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.1.1 Nuclear decay parameters<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.1.2 Short half-life with respect to counting time<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.1.3 Counting systems resolving time<br>&nbsp;&nbsp;6.2 Abnormal check-source count rate<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.1 Integrity of the check source<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.2 Photomultiplier tube and amplifier performance<br>&nbsp;&nbsp;6.3 Abnormal background check-source count rate<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.3.1 Contamination<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.3.2 High-activity sources<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.3.3 Chemiluminescence, phosphorescence and static <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;electricity<br>&nbsp;&nbsp;6.4 Miscellaneous precautions<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.4.1 Organic-scintillator solute purity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.4.2 Background activity from low-potassium glass<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.4.3 Small-vial check sources<br>Annexes<br>A Statistical tests of reproducibility - The x2 test and <br>&nbsp;&nbsp;other criteria<br>B Performance monitoring log for liquid-scintillation <br>&nbsp;&nbsp;counter<br>C Physical properties of liquid scintillators and <br>&nbsp;&nbsp;requirements for toluene acceptance

Abstract

Provides the user with a means of verifying the performance of typical liquid-scintillation courting systems.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 45