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JJG 377-2019: Radioactivity Meters
Status: Valid JJG 377: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 377-2019 | English | 329 |
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Radioactivity Meters
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JJG 377-2019
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| JJG 377-1998 | English | 239 |
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Verification regulation of radioactivity meter
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JJG 377-1998
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| JJG 377-1985 | English | RFQ |
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(Chinese Industry Standard)
| Obsolete |
JJG 377-1985
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PDF similar to JJG 377-2019
Basic data | Standard ID | JJG 377-2019 (JJG377-2019) | | Description (Translated English) | Radioactivity Meters | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A58 | | Classification of International Standard | 17.240 | | Word Count Estimation | 14,117 | | Date of Issue | 2019 | | Date of Implementation | 2020-03-27 | | Issuing agency(ies) | State Administration for Market Regulation | JJG 377-2019: Radioactivity Meters---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Radioactivity Meters
National Measurement Verification Regulations of the People's Republic of China
Radioactivity meter
2019-09-27 release
2020-03-27 Implementation
Issued by the State Administration of Market Supervision and Administration
Verification Regulation of Radioactivity Meter
Replace JJG 377-1998
Centralized unit. National Technical Committee on Ionizing Radiation Measurement
Main drafting unit. China Academy of Metrology
Shanghai Institute of Metrology and Testing Technology
Central Hospital of Feixiang District, Handan City
Participating in the drafting unit. Liaoning Institute of Metrology
The National Commission for Ionizing Radiation Measurement Technical Commission is responsible for interpretation
The main drafters of this regulation.
Zhang Ming (Chinese Academy of Metrology)
Zhao Qing (Chinese Academy of Metrology)
Tang Fangdong (Shanghai Institute of Metrology and Testing Technology)
Xiaoli Liu (Central Hospital of Feixiang District, Handan City)
Participating drafters.
Liang Juncheng (Chinese Academy of Metrology)
Liu Jian (Liaoning Institute of Metrology)
Chao Chao (Shanghai Institute of Metrology and Testing Technology)
table of Contents
Introduction (Ⅱ)
1 Scope (1)
2 References (1)
3 Terms and units of measurement (1)
3.1 Terminology (1)
3.2 Unit of measurement (1)
4 Overview (1)
5 Measurement performance requirements (1)
6 General technical requirements (2)
6.1 Appearance (2)
6.2 Logo (2)
7 Control of measuring instruments (2)
7.1 Verification conditions (2)
7.2 Verification items (3)
7.3 Verification method (3)
7.4 Processing of verification results (4)
7.5 Verification period (4)
Appendix A Recommended format for verification records (5)
Appendix B. Information on the inside pages of the certification and recommended format (6)
Appendix C. Information on the inner pages of the test result notification and recommended format (7)
Introduction
JJF1002-2010 "Rules for Compiling National Measurement Verification Regulations", JJF1001-2011 "General Measurement Terms and
"Definition", JJF1059.1-2012 "Measurement Uncertainty Evaluation and Representation" constitute the supporting work for the revision of this regulation
The basic series of specifications.
Compared with JJG 377-1998, in addition to editorial changes, the main changes in this regulation are as follows.
--- A clear distinction is made between standard-level activity meters and work-level activity meters;
--- The requirements for measurement standards and verification methods have been modified;
--- Cancelled the "monitoring value change range" and "7-hour stability" verification items;
--- Increasing the measurement performance requirements for the "background" of the activity meter;
--- Replace "basic error" with "relative inherent error" and improve the corresponding technical requirements;
--- Relaxed the technical requirements for the "reproducibility" of standard-level activity meters;
--- Modified the "non-linear" verification method for standard-level activity meters.
The previous releases of this regulation are.
--- JJG 377-1998;
--- JJG 522-1988; JJG 377-1985.
Verification Regulation of Radioactivity Meter
1 Scope
This regulation is applicable to the first verification, subsequent verification and in-use inspection of radioactivity meters. Activity measurement range
(3.7 × 105 ~ 3.7 × 1010) Bq, photon energy range (25 ~ 3000) keV.
2 Reference documents
This regulation refers to the following documents.
JJF1001-2011 General Measurement Terms and Definitions
JJF1035-2006 Terms and definitions of ionizing radiation measurement
GB/T 4960.1-2010 Nuclear Science and Technology Terms Part 1.Nuclear Physics and Nuclear Chemistry
GB/T 4960.6-2008 Nuclear science and technology terminology Part 6.Nuclear instrumentation
GB/T 10256-2013 radioactivity meter
For dated references, only the dated versions are applicable to this Regulation; for those without dates
The latest version (including all amendments) is applicable to this regulation.
3 Terms and units of measurement
3.1 Terminology
JJF1001-2011, JJF1035-2006, GB/T 4960.1-2010, GB/T 4960.6-2008
The following terms and definitions apply to this regulation.
3.1.1 Radioactivitymeter
A device for measuring the activity of a radioactive source and equipped with indicating or recording instruments.
3.1.2 background
Under normal working conditions, the instrument shows the value when there is no radionuclide.
3.2 Unit of measurement
[Radioactivity] Activity. Becker [Leer]; Symbol. Bq.
4 Overview
A radioactivity meter (hereinafter referred to as an activity meter) is a device that measures the activity of a radioactive source and is equipped with an indicating or recording instrument
Set. It is mainly composed of a well-shaped ionization chamber, a current measurement system and a radioactivity activity display value display unit. Radionuclide decay
The current generated by the γ-rays generated by the ionization of the working gas in the ionization chamber is proportional to the activity of the radionuclide
Proportional.
The activity meter is mainly used in the fields of nuclear medicine diagnosis, treatment, radiopharmaceutical production and sales.
The activity meter is divided into standard level activity meter and work level activity meter according to the measurement performance characteristics.
5 Measurement performance requirements
The metering performance requirements of the activity meter are shown in Table 1.
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