SN/T 5291-2021 in English

VALID

Specification for construction of Customs radioassay laboratories

Issued on:2021-11-22
Implemented on:2022-06-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $250.00
$243.00

Standard No:	SN/T 5291-2021
Document status:	VALID
Title in English:	Specification for construction of Customs radioassay laboratories
Title in Chinese:	海关放射性检测实验室建设规范
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2021-11-22
Implemented on:	2022-06-01
Professional Classification:	SN-Import&Export Inspection
Related Topics:	Testing Laboratory Northeast Testing Laboratory Steel testing laboratory radioactive detection radiation customs Detection experiment Laboratory testing room three Radioactivity detection basis Foreign testing laboratory Radioactive Testing Standards Radioactive Laboratory Analysis middle testing room radioactive detection Radioactive Testing Standards lab configuration Comprehensive testing laboratory Trace Radiation Laboratory Seed Testing Laboratory High Energy Testing Laboratory Testing Laboratory Testing laboratory 2 laboratory radioactivity analysis Radiation detection equipment laboratory radioactivity analysis Radiation detection equipment Radiation detection laboratory composition radioactivity detection How to detect radioactivity p2 laboratory construction sex test Testing laboratory construction Testing laboratory construction laboratory construction Radiation detection Foreign laboratory construction Radiometric Laboratory Experimental standard testing radioactivity laboratory Environmental Radiation Laboratory Laboratory range Laboratory range Environmental Radiation Laboratory Environmental Radiation Laboratory Environmental Radiation Laboratory customs regulations indoor radiation laboratory Radioactivity detection basis Neutron detector Neutron detector Railway related laboratories animal testing laboratory Laboratory protective equipment laboratory construction Number of laboratory tests laboratory magnifying glass Construction Laboratory Equipment Seawater testing equipment magnifying glass laboratory Real detection Automatic performance testing laboratory Radioactive detection in water Instruments in a radiological laboratory Performance Testing Laboratory Detection experiment Testing laboratory function room Central Laboratory and Testing Laboratory Electronic Inspection Laboratory Performance testing laboratory system lab configuration Performance testing laboratory system radiological laboratory laboratory magnifying glass How is radioactivity detected large testing laboratory p2 laboratory construction Steel pipe radioactive detection Construction of Pengcheng Laboratory Build a national laboratory Science and Technology Festival Laboratory Open Construction of Pengcheng Laboratory Science and Technology Festival Laboratory Open Indoor radioactivity detection Environmental radioactivity detection National Testing Laboratory construction laboratory Radiology laboratory Secondary inspection laboratory construction Laboratory Equipment Emissions Laboratory testing related Fire Resistance Testing Laboratory Fire Testing Laboratory How does the inspection and testing laboratory test Laboratory testing at the national level Construction Laboratory Equipment Classification of laboratory tests How to detect radioactivity Laboratory Fire Building Fire Resistance Testing Laboratory How to detect radioactivity in the house National Laboratory Construction laboratory construction Laboratory and testing conditions Radiological laboratory main equipment About Laboratory Radioactive Reference Materials Testing Laboratory Capability Equipment Inspection laboratory equipment laboratory appointment Foreign testing laboratory Test experiment detection p3 laboratory detectable Fire Testing Laboratory Laboratory Water Testing Nucleic acid testing laboratory construction animal testing laboratory Offshore Energy Laboratory Laboratory Testing Magazine official website Laboratory construction radioactivity Geological laboratory construction Urine iodine laboratory construction National laboratory construction National standards for water quality laboratory construction Scrap radioactive testing Customs inspection Construction of Laboratory Alpha Beta Customs inspection industry Product radioactivity testing Laboratory seawater preparation related to molecular laboratories Testing laboratory industry radiation laboratory Engineering radioactive testing Steel radioactivity testing Huawei laboratory construction Testing laboratory standard construction Laboratory self-built testing methods Hydrogen energy laboratory construction Steel radioactivity testing Voiceprint laboratory construction Soil testing laboratory construction standard requirements News on the pilot project of self-built testing methods in the laboratory Confidential room construction Customs laboratory audit Mass spectrometry laboratory construction Residual chlorine laboratory test National Radiological Laboratory Construction Standard placement of laboratory measuring cylinders

Introduction

Interpretation of the core content of the standard

SN/T 5291-2021 standard puts forward systematic technical requirements for the construction of customs radioactivity detection laboratories, mainly including:

Laboratory classification system (Class A/B)
Staff qualification and equipment configuration matrix
Radiation protection three-level control system
Radioactive waste disposal process

Laboratory classification comparison

Dimensions	Class A laboratory	Class B laboratory
Staffing	≥4 people (including nuclear professionals)	≥2 people
Equipment requirements	12 categories including high purity germanium gamma spectrometer	5 categories of basic detection equipment
Technical capabilities	8 items including transuranium nuclide analysis	3 items of basic nuclide screening

Key technical requirements

Radiation protection system

The standard adopts the ALARA principle (as low as reasonably practicable), and requires:

Personal dose limit: average of ≤20mSv/year for 5 consecutive years
The storage of Class V radioactive sources must meet the air kerma rate of ≤2.5μGy/h at 30cm
Establish a three-level monitoring system (environmental/regional/individual)

Typical equipment configuration

Class A laboratories must be equipped with equipment such as liquid scintillation spectrometer, and their technical parameters must meet the following requirements

Detection efficiency: γ spectrometer ≥35%
Background count: α/β counter ≤0.5cpm

Implementation recommendations

Construction phase

1. The site should be away from residential areas by more than 500 meters
2. The walls should be protected by 20cm concrete
3. The radioactive source library should be managed by two people with two locks

Operation phase

• Conduct surface contamination detection every month
• Calibrate radiation monitoring equipment every quarter
• Annual emergency drills must cover source leakage scenarios

More samples: GB 18306-2015 NB/T 47013.2-2015 JJG 21-2008

Sample only — not a preview of SN/T 5291-2021

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