SIST EN 61005:2005

SLOVENSKI SIST EN 61005:2005

STANDARD
julij 2005
Oprema za zaščito pred sevanjem – Merilniki ekvivalentne doze v prostoru za
nevtronsko sevanje
Radiation protection instrumentation – Neutron ambient dose equivalent (rate)
meters
ICS 13.280; 17.240 Referenčna številka
SIST EN 61005:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 61005
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2004

ICS 13.280


English version


Radiation protection instrumentation –
Neutron ambient dose equivalent (rate) meters
(IEC 61005:2003, modified)


Instrumentation pour la radioprotection - Strahlenschutz-Messgeräte -
Appareils de mesure de l'équivalent Umgebungsäquivalentdosis(leistungs-)
de dose ambiant neutron Messgeräte für Neutronenstrahlung
(ou de son débit d'équivalent de dose) (IEC 61005:2003, modifiziert)
(CEI 61005:2003, modifiée)



This European Standard was approved by CENELEC on 2004-10-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61005:2004 E

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EN 61005:2004 - 2 -

Foreword

The text of the International Standard IEC 61005:2003, prepared by SC 45B, Radiation
protection instrumentation, of IEC TC 45, Nuclear instrumentation, together with the common
modifications prepared by the CENELEC BTTF 111-3, Instrumentation for ionizing radiation
measurement and protection, was submitted to the formal vote and was approved by
CENELEC as EN 61005 on 2004-10-01.

The following dates are proposed:

– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2005-10-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-10-01

Clauses, Subclauses, tables and figures which are additional to those in IEC 61005 are
prefixed “Z”.

Annex ZA has been added by CENELEC.

__________

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- 3 - EN 61005:2004
Endorsement notice

The text of the International Standard IEC 61005:2003 was approved by CENELEC as a
European Standard with agreed common modifications as given below.

COMMON MODIFICATIONS

1 Scope and object
First paragraph, item b):
Add a NOTE:
NOTE Z  If the Equipment consists of separate detector and measurement assemblies the cable between the
two shall be that specified by the manufacturer. If the connection is by other means (e.g. radio waves,
infrared) or other cables, it is necessary to apply additional requirements with respect to the specific media.

2 Normative references
See Annex ZA
Correct titles of documents (e.g. ISO 8529-2:2000 and ISO 8529-3:1998).
Add EN 55011 (CISPR 11).

4 General characteristics of the measuring assemblies
4.4 Second paragraph, item b):
Replace at the end of the paragraph “… the effective range shall extend from
-1 -1
1,0 µSv h to 99,9 mSv h ) ” by “… the effective range shall extend from 1,0 to
99,9)”.
Add a new subclause after 4.4:
4.Z1 Classification dependent on expected condition of use
An assembly for the measurement of neutron ambient dose equivalent (rate) should
be classified, depending on its weight and the mode of use, in one of those three
categories:
− fixed station;
− mobile station;
− hand held.
For any hand held apparatus, the maximum necessary measurement time needed for
the measurement accuracy (in accordance with the defined performances) has to be
less than 30 s and the maximum mass less than 5 kg.

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EN 61005:2004 - 4 -
6 Radiation characteristics
6.5.1 Replace the second paragraph by:
If the tests are conducted in simulated neutron fields as described in ISO 12789, the
fields used shall be indicated by the manufacturer and they should be in accordance
with the field encountered at the work place where the device will be used.
137 137 60
6.6.2.1 Replace in items a) and b) “ Cs” by “ Cs or Co *)”
60
* Co on particular request by the customer. ((footnote))
Replace item b) by:
b) In a neutron reference field producing an indication of 1 mSv/h, exposure to
137
10 mSv/h from Cs photon radiation shall not change this neutron indication by
more than 10 %.
137
The Cs sources used for the above tests should conform to the requirements of
the ISO 4037 series.
137 137 60
6.6.2.2 Replace “ Cs” by “ Cs or Co *)”

7 Electrical characteristics
7.4.1 Replace in item a) “2%” by “5%”.
7.7.2 Replace in the note “… mains frequency, then this test .” by “… mains frequency,
the latter test .”

8 Electromagnetic compatibility
8.1 Replace the second paragraph by:
A suitable radioactive stability check device (for example with a 2 GBq Am/Be-
source) should be fitted to the dose equivalent (rate) meter to produce during the
measurements an indication of approximately ten times the lower limit of the effective
range of measurement. The presence of the check source shall not interfere with the
tests being undertaken.
8.3 Radiated electromagnetic fields
Replace the title of 8.3.1 by:
8.3.1 General radiated electromagnetic fields
1)
Renumber 8.3.1 as 8.3.1.1 and 8.3.2 as 8.3.1.2.
Delete note 2 to 8.3.1.2 (new numbering).
———————
1)
This replacement has to be done where appropriate throughout the standard.

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- 5 - EN 61005:2004
Add a new Subclause 8.3.2:
8.3.2 Radiated electromagnetic fields of mobile phones
8.3.2.1 Requirements
The maximum spurious indications (both transient and permanent) of the display or
data output due to radiated electromagnetic fields shall be less than 10 % of the
indicated value without the fields.
8.3.2.2 Test method
The device is placed into an area where it may be completely covered with a
radio-frequency field, as described in EN 61000-4-3. Perform the following
operations with the electro-magnetic field switched on and off:
a) The electromagnetic field strength shall be 20 V/m in the frequency range of
800 MHz to 1 000 MHz and 1 400 MHz to 2 400 MHz. The test should be
-3
performed using an automated sweep at a rate not greater than 1,5 × 10
decades per second, or 1 % of the fundamental.
NOTE 40 V/m is chosen to enable the test to be performed in one orientation. 20 V/m is the
required intensity.
b) The signal should be 80 % amplitude modulated with a 1 kHz sine wave.
c) If an automated sweep is not possible, compliance can be shown through
exposure at frequencies (820; 900) MHz and (1,4; 1,5; 1,6; 1,8; 2,0; 2,2 and
2,4) GHz.
d) If any change of the response greater than one-third of the limits given in 8.3.1 is
observed, additional tests (in the range of ± 5 % around this frequency in steps of
1 % if step c) is used) shall be carried out with the assembly in all three
orientations as described in EN 61000-4-3.
8.4.2 Delete the note.
8.8 Replace by:
Apply EN 55011 (CISPR 11).
The objective of this test is to appreciate the maximum disturbing electromagnetic
field radiated by the material.
All the exits are cabled with their nominal load. One measures the field emitted by
the material during a control of operation.
Classify A Group 1 according to EN 55011: with 10 m, the field should not exceed
40 dB(mV/m) in band 30 MHz to 230 MHz, and should not exceed 47 dB(mV/m) in
band 230 MHz to 1 000 MHz.

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EN 61005:2004 - 6 -
12 Documentation
Add a new subclause after 12.2:
12.Z1 Type test report
At the request of the purchaser, the manufacturer shall make available the report on
the type tests performed to the requirements of this standard.

Table 2 Suppress “±” in the first dash of line “zero drift”.

Table 3 Move the last sentence of footnote e) to a new footnote g) referring only to the
50 °C value.
Delete the indication for footnote e) from the 50 °C value and replace by “g)”.
Replace in the line “relative humidity” the indication for footnote f) by the value
“± 10 %” as given in 11.3.2.

Table 4 Add a new row just below:
Radiated electromagnetic As in EN 61000-4-3 ± 10 % 8.3.2
fields of mobile phones

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- 7 - EN 61005:2004
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.

NOTE Where an international publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-393 1996 International Electrotechnology - -
Vocabulary
Chapter 393: Nuclear instrumentation:
Physical phenomena and basic concepts

IEC 60050-394 1995 Chapter 394: Nuclear instrumentation: - -
Instruments

IEC 60086-1 2000 Primary batteries EN 60086-1 2001
Part 1: General

IEC 61000-4-2 1995 Electromagnetic compatibility (EMC) EN 61000-4-2 1995
Part 4-2: Testing and measurement
techniques - Electrostatic discharge
immunity test
A1 1998 A1 1998

IEC 61000-4-3 2002 Part 4-3: Testing and measurement EN 61000-4-3 2002
techniques - Radiated, radio-frequency,
electromagnetic field immunity test

IEC 61000-4-4 1995 Part 4-4: Testing and measurement EN 61000-4-4 1995
techniques - Electrical fast transient/burst
immunity test

IEC 61000-4-5 1995 Part 4-5: Testing and measurement EN 61000-4-5 1995
techniques - Surge immunity test
A1 2000 A1 2001

IEC 61000-4-6 1996 Part 4-6: Testing and measurement EN 61000-4-6 1996
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
A1 2000 A1 2001

IEC 61000-4-8 1993 Part 4-8: Testing and measurement EN 61000-4-8 1993
techniques - Power frequency magnetic
field immunity test
A1 2000 A1 2001

IEC 61000-4-12 1995 Part 4-12: Testing and measurement EN 61000-4-12 1995
techniques - Oscillatory waves immunity
test
A1 2000 A1 2001

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EN 61005:2004 - 8 -
Publication Year Title EN/HD Year
IEC 61187 (mod) 1993 Electrical and electronic measuring EN 61187 1994
equipment - Documentation + corr. March 1995

ISO 4037-1 1996 X and gamma reference radiation for - -
calibrating dosemeters and doserate
meters and for determining their response
as a function of photon energy
Part 1: Radiation characteristics and
production methods

ISO 4037-2 1997 Part 2: Dosimetry for radiation protection - -
over the energy ranges from 8 keV to 1,3
MeV and 4 MeV to 9 MeV

ISO 4037-3 1999 Part 3: Calibration of area and personal - -
dosemeters and the measurement of their
response as a function of energy and
angle of incidence

ISO 8529-1 2001 Reference neutron radiations - -
Part 1: Characteristics and methods of
production

ISO 8529-2 2000 Part 2: Calibration fundamentals of - -
radiation protection devices related to the
basic quantities characterizing the
radiation field

ISO 8529-3 1998 Part 3: Calibration of area and personal - -
dosimeters and determination of
response as a function of energy and
angle of incidence

ISO 11929-1 2000 Determination of the detection limit and - -
decision threshold for ionizing radiation
measurements
Part 1: Fundamentals and application to
counting measurements without the
influence of sample treatment

ISO 12789 2000 Reference neutron radiations - - -
Characteristics and methods of
production of simulated workplace
neutron fields

ICRP Publication 1996 Conversion coefficients for use in - -
74 radiological protection against external
radiation

ICRU Report 43 1988 Determination of dose equivalents from - -
external radiation sources

ICRU Report 51 1993 Quantities and units in radiation - -
protection dosimetry

ICRU Report 57 1998 Conversion coefficients for use in - -
radiation protection against external
radiation

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- 9 - EN 61005:2004
Publication Year Title EN/HD Year
CISPR 11 (mod) 1997 Industrial, scientific and medical (ISM) EN 55011 1998
radio-frequency equipment -
Radiodisturbance characteristics - Limits
and methods of measurement

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Instrumentation pour la radioprotection –
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utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
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For price, see current catalogue

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61005 © IEC:2003 – 3 –
CONTENTS
FOREWORD . 7
1 Scope and object . 9
2 Normative references. 9
3 Terms and definitions .13
3.1 General .13
3.2 Dosimetric terms and quantities.13
3.3 Definitions .15
3.4 Test nomenclature .19
4 General characteristics of the measuring assemblies.21
4.1 Assembly labels and markings.21
4.2 Indication of the assembly .21
4.3 External signal connections .21
4.4 Effective range of measurement .21
5 General test procedures .23
5.1 Test requirements.23
5.2 Tests performed under standard test conditions.23
5.3 Tests performed with variation of influence quantities .23
5.4 Statistical fluctuations.23
5.5 Reference neutron radiation .25
6 Radiation characteristics.25
6.1 Relative intrinsic error in ambient dose equivalent rate indication .25
6.2 Requirements on the accuracy of alarm settings .29
6.3 Variation of response with neutron radiation energy.31
6.4 Variation of indication with angle of incidence of radiation .33
6.5 Response in workplace neutron fields.33
6.6 Response to other external ionising radiations.35
7 Electrical characteristics .35
7.1 Statistical fluctuations.35
7.2 Response time.37
7.3 Relationship between response time and statistical fluctuations.39
7.4 Zero drift.39
7.5 Warm-up time .41
7.6 Power supplies – battery operation .41
7.7 Power supplies – Mains operations.43
8 Electromagnetic compatibility.45
8.1 General .45
8.2 Electrostatic discharge .45
8.3 Radiated electromagnetic fields .45
8.4 Conducted disturbances induced by radio-frequencies.47
8.5 Conducted disturbances induced by surges and oscillatory waves .49
8.6 Conducted disturbances induced by fast transients or bursts .49
8.7 External magnetic fields (50 Hz/60 Hz) .49
8.8 Emission of electromagnetic radiation.51

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61005 © IEC:2003 – 5 –
9 Mechanical characteristics.51
9.1 Mechanical shocks .51
9.2 Orientation of assembly (geotropism) .51
9.3 Vibration test .51
10 Safety characteristics.53
10.1 Overload characteristics .53
10.2 Ease of decontamination .53
11 Environmental characteristics .53
11.1 Ambient temperature influence .53
11.2 Temperature shock.55
11.3 Relative humidity .57
11.4 Atmospheric pressure .57
11.5 Sealing .57
11.6 Storage and transport .57
12 Documentation.57
12.1 Identification certificate.57
12.2 Operation and maintenance manual.59
Annex A (normative) Neutron fluence-to-ambient dose equivalent conversion coefficients 69
Figure A.1 – Neutron fluence-to-ambient dose equivalent conversion coefficients for
mono-energetic neutrons (data taken from ICRU 57 (1998)).71
Table 1 – Reference conditions and standard test conditions .61
Table 2 – Tests performed under standard test conditions.63
Table 3 – Tests performed with variation of influence quantities.65
Table 4 − Limits of variation of performance characteristics due to effects of
influence quantities .67
Table A.1 – Neutron fluence-to-ambient dose equivalent conversion coefficients
for mono-energetic neutrons (data taken from ICRU 57 (1998)).69
Table A.2 – Neutron fluence-to-ambient dose equivalent conversion coefficients for the
neutron reference radiation sources (data taken from ICRU 57 (1998) and ISO 8529-3).71

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61005 © IEC:2003 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RADIATION PROTECTION INSTRUMENTATION –
NEUTRON AMBIENT DOSE EQUIVALENT (RATE) METERS
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61005 has been prepared by subcommittee 45B: Radiation
protection instrumentation, of IEC technical committee 45: Nuclear instrumentation.
This second edition cancels and replaces the first edition, published in 1990, and constitutes
a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
45B/397/FDIS 45B/400/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
2007. At this date, the publication will be
 reconfirmed;
 withdrawn;
 replaced by a revised edition, or
 amended.

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61005 © IEC:2003 – 9 –
RADIATION PROTECTION INSTRUMENTATION –
NEUTRON AMBIENT DOSE EQUIVALENT (RATE) METERS
1 Scope and object
This International Standard is applicable to all assemblies designed to measure the ambient
dose equivalent (rate) due to neutron radiation of energy up to 16 MeV, and which comprise
at least:
a) a detection assembly, which may, for example, consist of a detector probe for thermalised
neutrons and an arrangement of moderating and absorbing media surrounding the
detector;
b) a measuring assembly with a display for the measuring result, which may be incorporated
into a single assembly or connected by means of a flexible cable.
The requirements given below pertain to assemblies as defined in the first paragraph. It is
acceptable, however, to use assemblies, which do not meet the requirements below when
such requirements are not deemed essential for a given purpose. In such cases, the
requirements to be applied to the assemblies should be specified by agreement between the
manufacturer and the purchaser, but the methods of determination of the characteristics of
the assemblies should conform to this standard.
No tests are specified in this standard for the performance requirements of the assemblies in
pulsed radiation fields, and it is to be considered that an assembly designed to meet this
standard may not be suitable for use in such fields.
The object of this standard is to specify requirements for the performance characteristics of
neutron ambient dose equivalent (rate) meters, and to prescribe the methods of testing in
order to determine compliance with this standard. This standard specifies, for the assemblies
described in the first paragraph, general characteristics, general test procedures, radiation
characteristics, electrical, mechanical, safety and environmental characteristics, and also the
identification certificate. Requirements and test procedures are also specified for the alarm
performance of the dose equivalent (rate) meters, which are equipped with alarm provisions.
NOTE Dose equivalent (rate) meters for neutrons have an energy dependence of ambient dose equivalent
response, which may deviate considerably from unity. The response in realistic spectra encountered in workplace
fields is such that the deviations in different energy ranges tend to neutralise each other. Consequently, the
response in realistic fields is generally much closer to unity.
ISO 12789 specifies a list of appropriate neutron sources having broad spectra suitable for the testing of such
(rate) meters. Also work places may be specified by agreement between manufacturer and purchaser to be
appropriate for testing when the spectral environment is well defined.
Unconventional dose equivalent ratemeters, for example consisting of more than one detector probe, have recently
become available. For such instruments, evaluation based on mono-energetic neutrons is not relevant. Also for
those ratemeters, the above considerations may apply.
2 Normative references
The f
...