IEC TS 62743:2012

Radiation protection instrumentation - Electronic counting dosemeters for pulsed fields of ionizing radiation

IEC/TS 62743:2012(E) applies to all types of counting dosemeters, irrespective of the measuring quantity and the type of radiation intended to be measured. It ensures that a single radiation pulse can be correctly measured even if the dosemeter is in the internal state relevant for measuring background or environmental radiation. The characteristics of the dosemeter for repeated pulses is expected to be better than for one single radiation pulse with the same parameters but worse than for continuous radiation, i.e., in between of the characteristics for these two extreme conditions. Considers the pulsation of the radiation field as an additional influence quantity like particle energy and direction of radiation incidence. Therefore, the tests described are additional to all the tests in the respective standards.

General Information

• Status: Published
• Publication Date: 18-Sep-2012
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 13.280 - Radiation protection
• ICS: 31.220 - Electromechanical components for electronic and telecommunications equipment
• Technical Committee: SC 45B - Radiation protection instrumentation
• Drafting Committee: WG 8 - TC 45/SC 45B/WG 8
• Current Stage: PPUB - Publication issued
• Start Date: 15-Nov-2012
• Completion Date: 19-Sep-2012

Standards Content (Sample)

IEC/TS 62743 ®
Edition 1.0 2012-09
TECHNICAL
SPECIFICATION
Radiation protection instrumentation – Electronic counting dosemeters for
pulsed fields of ionizing radiation

IEC/TS 62743:2012(E)
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IEC/TS 62743 ®
Edition 1.0 2012-09
TECHNICAL
SPECIFICATION
Radiation protection instrumentation – Electronic counting dosemeters for

pulsed fields of ionizing radiation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
T
ICS 13.280 ISBN 978-2-83220-364-4

– 2 – TS 62743  IEC:2012(E)
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 9
3 Terms and definitions, abbreviations and symbols, quantities and units . 9
3.1 Terms and definitions . 9
3.2 List of symbols and abbreviations . 11
3.3 Quantities and units . 12
4 General test procedure . 13
4.1 Nature of test . 13
4.2 Reference conditions and standard test conditions . 13
5 General requirements . 13
5.1 Summary of requirements . 13
5.2 Parameters required to be known of the pulsed radiation field . 13
5.3 Parameters required to be determined of the counting dosemeter . 13
5.4 Criteria for suitability of a dosemeter in pulsed radiation fields . 13
5.4.1 General . 13
5.4.2 Radiation pulse duration larger than or equal to the dead time: t
pulse
≥ t . 14
dead
5.4.3 Radiation pulse duration shorter than the dead time: t < t . 14
pulse dead
5.5 Type of radiation . 14
5.6 Mechanical characteristics . 14
5.7 Requirements to software, data and interfaces . 14
6 Radiation detection requirements . 15
6.1 General . 15
6.2 Indication of the dose rate and the number of counts . 15
6.2.1 Requirements . 15
6.2.2 Method of test . 15
6.2.3 Interpretation of the results . 16
6.3 Measurement cycle time, T . 16
cycle
6.3.1 Requirements . 16
6.3.2 Method of test . 16
6.3.3 Interpretation of the results . 17
6.4 Indication per counting event, G . 17
count
6.4.1 Requirements . 17
6.4.2 Method of test . 17
6.4.3 Interpretation of the results . 17
6.5 Dead time, t . 17
dead
6.5.1 Requirements . 17
6.5.2 Method of test . 17
6.5.3 Interpretation of the results . 18

6.6 Maximum measurable dose rate value, H . 18
count, max
6.6.1 Requirements . 18
6.6.2 Method of test . 19
6.6.3 Interpretation of the results . 19

TS 62743  IEC:2012(E) – 3 –
6.7 Pulse dose rate overload alarm . 19
6.7.1 General . 19
6.7.2 Requirements . 19
6.7.3 Method of test . 19
6.7.4 Interpretation of the results . 19
6.8 Proof of model function and pulse overload alarm . 20
6.8.1 General . 20
6.8.2 Requirements . 20
6.8.3 Method of test . 20
6.8.4 Interpretation of the results . 20
7 Environmental requirements . 21
8 Mechanical requirements . 21
9 Electromagnetic requirements . 21
10 Documentation . 21
10.1 Operation and maintenance manual . 21
10.2 Type test report . 21
Annex A (informative) Parameter values for typical workplaces where pulsed radiation
occurs . 23
Annex B (informative) Parameters characterizing the pulsed radiation field . 24
Bibliography . 25

Table 1 – Symbols and abbreviated terms . 12
Table 2 – Reference conditions and standard test conditions for tests using pulsed
radiation . 22
Table 3 – Characteristics of counting dosemeters used in pulsed fields of ionizing
radiation . 22
Table A.1 – Parameter values for workplaces where pulsed radiation occurs, as of
2012 . 23

– 4 – TS 62743  IEC:2012(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RADIATION PROTECTION INSTRUMENTATION –
ELECTRONIC COUNTING DOSEMETERS
FOR PULSED FIELDS OF IONIZING RADIATION

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