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GB/T 14318-2019Radiation protection instrumentation - Neutron ambient dose equivalent (rate) meters (English PDF)

辐射防护仪器中子周围剂量当量(率)仪

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

June 4, 2019

Implementation date

January 1, 2020

Scope

GB/T 14318-2019 is the English-translated version of 辐射防护仪器中子周围剂量当量(率)仪.

GB/T 14318-2019 is the Chinese standard "Radiation protection instrumentation - Neutron ambient dose equivalent (rate) meters".

Its scope clause reads: This standard applies to instruments that measure the ambient dose equivalent (rate) produced by neutron radiation below 20 MeV, which includes at least. a) a detection device, such as a device consisting of a thermal neutron detector and a neutron moderating and absorbing medium surrounding the detector; b) measuring device with display measurement, which can be integrated with the detection device or can be separated by cable connection Device.

This standard includes instruments with energy ranges up to 20 MeV. If the instrument also provides an indication of the neutron dose, it should be satisfied with this standard.

The neutron dose requirement. This standard does not specify test methods for instrument performance requirements in pulsed radiation fields. It is not certain whether the device designed to meet this standard is suitable Used for pulsed radiation fields.

This standard specifies the performance requirements of the dose equivalent (rate) meter around the neutron and the test side to determine its performance to meet the requirements of this standard. law.

This standard specifies the general characteristics, general test methods, radiation characteristics, electrical characteristics, mechanical characteristics of the dose equivalent (rate) meter around the neutron.

Sex, safety and environmental characteristics, and the requirements of the certificate of conformity (see 13.2), and the neutron peripheral with alarm function Requirements and test methods for volume equivalents.

Note. The response of the dose equivalent (rate) meter around the neutron is related to energy and may deviate significantly from the consistency requirement.

However, the response in the actual neutron field is not Deviations from the same energy range tend to cancel each other out, so the response to the actual neutron field tends to be close to uniform.

EJ/T.20086.1-2014 and ISO 12789-2 specify a range of broad spectrum neutron sources suitable for testing such instruments. For example. in the known spectrum When the environment is tested, the simulation work field specified in EJ/T.20086.1-2014 and ISO 12789-2 can be determined by the manufacturer and the user. The neutron field.

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Document preview — GB/T 14318-2019

National Standard of the People's Republic of China

ICS: 13.280
Classification: F 84

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
1 Scope
2 Normative references
3 Terms and definitions, abbreviations and symbols, quantities and units
3.1 Terms and Definitions
3.2 Test terminology
3.3 Abbreviations and symbols
3.4 Quantity and Unit
4 General test methods
4.1 Test requirements
4.2 Tests carried out with changes in the amount of influence
4.3 Nonlinear considerations
4.4 Dose (rate) instrumentation of multiple detectors or multiple signals
4.5 Statistical fluctuations
4.6 Radiation source
4.7 Workplace neutron field
5 General requirements
5.1 Summary of requirements
5.2 General characteristics
5.3 Mechanical characteristics
5.4 Interface Requirements
5.5 Algorithm for calculating the indicated value
6 Radiation detection requirements
6.1 Overview
6.2 Consideration of the uncertainty of the quantitative value
6.3 Dose Rate Response Stability, Dose Dependence, and Statistical Fluctuations
6.4 Response to changes in neutron energy
6.5 Monte Carlo calculation of instrument response
6.6 Response changes with incident angle of radiation
6.7 Overload characteristics
6.8 Response time
6.9 Relationship between response time and statistical fluctuations
6.10 Dose Equivalent Rate Alarm
6.11 dose equivalent alarm
6.12 Response to photon radiation
6.13 Response to other external ionizing radiation
7 superposition of indicator values
7.1 Requirements
7.2 Test method
7.3 Interpretation of results
8 software
8.1 Overview
8.2 Requirements
8.3 Test method
9 Electrical characteristics
9.1 Zero point indication value stability over time
9.2 Warm-up time
9.3 Power - Battery Power
9.4 Power Supply - AC Power Supply
10 Environmental requirements
10.1 Overview
10.2 Ambient temperature
10.3 Temperature shock
10.4 Relative humidity
10.5 Atmospheric pressure
10.6 Waterproof and Dustproof (IP Rating)
10.7 Storage and Transportation
11 Mechanical requirements
11.1 Overview
11.2 Drop Test
11.3 Vibration test
11.4 Flutter collision
11.5 Mechanical shock
12 Electromagnetic compatibility requirements
12.1 Overview
12.2 Electromagnetic emission
12.3 Electrostatic discharge
12.4 Radio Frequency Disturbance
12.5 Magnetic field
12.6 AC Power Supply Equipment Requirements
13 File
13.1 Operation and Maintenance Manual
13.2 Certificate of Conformity
13.3 Type test report
Appendix A (informative) Neutron fluence - ambient dose equivalent conversion factor

1 Scope

This standard applies to instruments that measure the ambient dose equivalent (rate) produced by neutron radiation below 20 MeV, which includes at least.

a) a detection device, such as a device consisting of a thermal neutron detector and a neutron moderating and absorbing medium surrounding the detector;

b) measuring device with display measurement, which can be integrated with the detection device or can be separated by cable connection

Device.

This standard includes instruments with energy ranges up to 20 MeV. If the instrument also provides an indication of the neutron dose, it should be satisfied with this standard.

The neutron dose requirement.

This standard does not specify test methods for instrument performance requirements in pulsed radiation fields. It is not certain whether the device designed to meet this standard is suitable

Used for pulsed radiation fields.

This standard specifies the performance requirements of the dose equivalent (rate) meter around the neutron and the test side to determine its performance to meet the requirements of this standard.

law. This standard specifies the general characteristics, general test methods, radiation characteristics, electrical characteristics, mechanical characteristics of the dose equivalent (rate) meter around the neutron.

Sex, safety and environmental characteristics, and the requirements of the certificate of conformity (see 13.2), and the neutron peripheral with alarm function

Requirements and test methods for volume equivalents.

Note. The response of the dose equivalent (rate) meter around the neutron is related to energy and may deviate significantly from the consistency requirement. However, the response in the actual neutron field is not

Deviations from the same energy range tend to cancel each other out, so the response to the actual neutron field tends to be close to uniform.

EJ/T.20086.1-2014 and ISO 12789-2 specify a range of broad spectrum neutron sources suitable for testing such instruments. For example. in the known spectrum

When the environment is tested, the simulation work field specified in EJ/T.20086.1-2014 and ISO 12789-2 can be determined by the manufacturer and the user.

The neutron field.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 14055.1-2008 Neutron reference radiation Part 1. Radiation characteristics and method of production (ISO 8529-1.2001, IDT)

GB/T 14055.2-2012 Neutron Reference Radiation Part 2. Calibration of Radiation Protection Meters Associated with Characterization of Fundamental Radiation Fields

Foundation (ISO 8529-2.2000, IDT)

EJ/T.20086.1-2014 Reference Radiation Field Simulation Workplace Neutron Field Part 1. Radiation Characteristics and Generation Methods (ISO 12789-1.2008, IDT)

ISO 8529-3.1998 Neutron reference radiation - Part 3. Calibration of physic and personal dosimeters and determination of energy and angular response (Referenceneutronradiation-Part 3.Calibrationofareaandpersonaldosimetersanddeterminationof

Theirresponseasafunctionofbetaradiationenergyandangleofincidence)

ISO 11929.2010 Determination basis for ionizing radiation measurement characteristic limits (limits of judgment thresholds, detection limits and confidence intervals)

Use [Determinationofthecharacteristiclimits(decisionthreshold,detectionlimitandlimitsoftheconfi-

Denceinterval)formeasurementsofionizingradiation-Fundamentalsandapplication]

ISO 12789-2.2008 Reference Radiation Field Simulating Workplace Neutron Fields Part 2. Basic Quantity Related Calibration Basis (Ref- erenceradiationfields-Simulateworkplaceneutronfields-Part 2.Calibrationfundamentalsrelateto

GB/T 4079 | GB/T 13286 | NB/T 20318 | GB/T 34138 | GB/T 41646 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 77 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 8529 · ISO 11929.2010 · ISO 12789

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