IEC 62523 pdf – Radiation protection instrumentation – Cargo/vehicle radiographic inspection system

IEC 62523 pdf – Radiation protection instrumentation – Cargo/vehicle radiographic inspection system
1 scope and object
This International Standard applies to radiographic inspection systems with photon radiationenergy of at least 500 keV for inspection of cargo, vehicles and cargo containers.
Such inspection systems generally consist of radiation source(s), detectors, control system,image processing system, radiation safety system and other auxiliary devices/facilities.
The object of this standard is to define the tests and the relevant testing methods fordetermining the performance characteristics of the radiographic inspection systems.
This standard is not applicable to those cargolvehicle inspection systems using neutronsource radiography, computed tomography or backscatter technology.
2 Normative references
The following referenced documents are indispensable for the application of this document.For dated references,only the cited edition applies. For undated references, the latest editionof the referenced document (including any amendments) applies.
IEC 60050-393:2003，International Electrotechnical Vocabulary (IEV) – Part 393: Nuclearinstrumentation – Physical phenomena and basic concepts
IEC 60050-394:2007，International Electrotechnical Vocabulary (IEV) – Part 394: Nuclearinstrumentation – Instruments, systems, equipment and detectors
IEC 60204-1:2005, Safety of machinery – Electrical equipment of machines – Part 1:Generalrequirements
IEC 61000-6-2:2005，Electromagnetic compatibility (EMC) – Part 6-2: Generic standards -Immunity for industrial environments
IEC 61000-6-4，Electromagnetic compatibility (EMC) – Part 6-4: Generic standards -Emission standard for industrial environments
IEC 61010-1:2001，Safety requirements for electrical equipment for measurement，control,and laboratory use – Part 1: General requirements
ISo 4948-1，Steels – Classification – Part 1: Classification of steels into unalloyed and alloysteels based on chemical composition
Iso 9978:1992,Radiation protection – Sealed radioactive sources -Leakage test methods
IAEA Safety Guide No.RS-G-1.10，Safety of Radiation Generator and Sealed Radioactivesources
IAEA Safety Guide No.TS-R-1，Regulations for the Safe Transport of Radioactive Material
3Terms and definitions
For the purposes of this document, the following terms and definitions apply, as well as thosegiven in lEc 60050-393 and lEC 60050-394.
3.1
transmission image
a projection image created by X-rays or gamma-rays passing through an inspected object,based on the difference of their attenuation by the inspected object
3.2
cargolvehicle radiographic inspection system (inspection system)
a system that makes use of X-ray or gamma-ray sources and radiation detectors to obtaintransmission images of cargo or vehicles
3.3
x-ray inspection system
an inspection system that uses accelerator(s) or generator(s) to produce bremsstrahlungradiation as the source of X-ray for obtaining images
3.4
gamma-ray inspection system
an inspection system that uses radionuclide(s) as the source of gamma-ray for obtainingimages
3.5
controlled area
a controlled area is any area in which specific protection measures and safety provisions areor could be required for;
a) controlling normal exposures or preventing the spread of contamination during normalworking conditions; and
b) preventing or limiting the extent of potential exposures[IAEA No.115]
3.6
supervised area
any area not designated as a controlled area but for which occupational exposure conditionsare kept under review even though specific protective measures and safety provisions are notnormalily needed
[IAEA No.115]
3.7
system boundary
the outer boundary of the supervised area
3.8
total absorber
any object through which the transmitted radiation is reduced to a level at which it is notpossible to distinguish from the background
3.9
steel penetration
the maximum thickness of steel (stated in mm), through which the X-rays or gamma-rays fromthe inspection system can be measured and distinguished from the background