JIS-Z-4614-1993-ENG.pdf
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1、“Oc 621.039.84 : 621.798.1 JIS JAPANESE INDUSTRIAL STANDARD Source container of measuring instrument utilizing ionizing radiation Translated Japanese Standards Association 1-24, Akasaka 4, Minaro-ku Tokyo 107 Japan JSA, 1997 PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by
2、 IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 08:16:52 MDTNo reproduction or networking permitted without license from IHS -,-,- UDC 621.039.84: 621.798.1 JAPANESE INDUSTRIAL STANDARD J I S Source container of measuring instrument Z 4614-1
3、993 utilizing ionizing radiation 1. container which is used to storage the sealed radioisotope source over 3.7 MBq, which has the fire resistant structure and is used for the measuring instruments utilizing ionizing radiation (hereafter referred to as “source container“). Scope This Japanese Industr
4、ial Standard specifies the requirements of the Remarks 1. The measuring instruments utilizing ionizing radiation men- tioned here means thickness meter, level meter, density meter, sulphur content meter for hydrocarbons, moisture meter, gamma-rays relay, etc. but gas chromatograph is excluded. 2. Th
5、e following standards are cited in this Standard. JIS C 0021-1987 Basic environmental testing procedures Part 2: tests, Test B: Dry heat JIS C 0040-1987 Basic environmental testing procedures Part 2: tests, Test Fc and guidance: Vibration (sinusoidal) Basic environmental testing procedures Part 2: t
6、ests, Test Ea: Shock JIS C 0041-1987 JIS C 1602-1981 Thermocouples JIS Z 4001-1991 JIS Z 4333-1990 JIS Z 8103-1990 Glossary of terms used in nuclear energy Portable photon ambient dose equivalent ratemeters for radiation protection Glossary of terms used in instrumentation 2. Z 4001, JIS Z 8103 and
7、the following defnitioiis apply: Definitions For the purposes of this Standard, the definitions given in JIS (1) outmost shell of source container container. A part of the outmost shell of source (2) radiation shield leakage, from the source container to outside, of radiation caused to source A gene
8、ric term of the parts which are used to shield storaged in the source container. source holder window of source container source container used for irradiation of radiation. shutter window of source container and its stop by remote or manual operation. (3) (4) (5) Device which is used to directly ho
9、ld radiation source. A irradiation hole of the outmost shell of A mechanism which is used for irradiation of radiation from the 3. Performance 3.1 and 3.4 without any damages and troubles when the test is performed in accord- ance with 6.2. Vibration resistance The performance of source container sh
10、ould meet 3.3 PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 08:16:52 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 Z 4614-1993 3.2 and
11、 3.4 without any damages and troubles when the test is performed in accord- ance with 6.3. Shock resistance The performance of source container should meet 3.3 3.3 3.4 under the condition where its shutter is closed when the test is performed in accordance with 6.4. Endurance of shutter The performa
12、nce of source container should meet Also, its function should not receive any damages by this test. 3.4 the following requirements. Shielding power of radiation The shielding power of radiation should meet (1) The leak dose equivalent rate of the source container which is used for stor- age of beta-
13、rays source should not exceed 6 pSvk at the point of 0.5 m from the surface of source container, when the test is performed in accord- ance with 6.5. The leak dose equivalent rate of the source container which is used for stor- age of X-rays source, gamma-rays source and neutron source should not ex
14、ceed 2 mSvk at the surface of source container and 100 pSvk at the point of 1 m from the surface of source container, when the test is per- formed in accordance with 6.5. (2) 3.5 should not drop out from the outmost shell of source container, when the test is performed in accordance with 6.6. Also,
15、remarkable deformation of the source container including its outmost shell should not be caused by this test. Fire resistance The source holder and shutter of the source container Structure The structure is as follows. The source container consists of outmost shell of source container, shutter, sour
16、ce holder (hereafter called the main components) and radiation shield. However, shutter is not required in case where source container has no window. diation shield in the case where it is necessary to separate the radiation shield from the main components in the principle of measurement. Remarks: A
17、lso, it is allowable that the exclusive shield is equipped in place of ra- The exclusive shield mentioned here means the shield which is exclusively prepared and can be mechanically separated from source container in some density meter or moisture meter and so on. Diaphragm, plate, net, etc. should
18、be prepared to the window of source con- tainer. The shutter of remote operation type should certainly act and have a device which can detect its open or close condition, in addition, automatically close in case of a power failure, a fire, etc. The shutter of manual operation type should certainly a
19、ct and have a func- tion which can check its open or close condition, and be able to lock under its close condition to prevent change to its open condition without permis- sion. PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employe
20、es/1111111001, User=Wing, Bernie Not for Resale, 03/11/2007 08:16:52 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 Z 4614-1993 The source container should have a structure so that source holder can not be removed easily and have no possibility of drop out. The thickness
21、 of radiation shield of source container which storages beta- ray source should be more than the maximum range of beta-ray radiated from beta-rays source over all directions in the case where its shutter is closed. The source container should be prepared a structure to lock its shutter in the case w
22、here leak of radiation from it may be increased by motion of the shutter due to vibration or shock supplied at the transportation. Materials The materials are as follows. The materials of main components of source container should be corrosion resistant materials or metals treated with an anticorros
23、ive such as paint and so on. The materials which do not melt at the temperature of less than 800C and have no possibility of cracking or suffering under transportation at the tem- perature range from -40C to 70C should be used for the materials of the outmost shell, components of shutter and source
24、holder. Remarks: Components of shutter mentioned here mean the parts which are used for keeping a shape of the shutter but the shielding materials (aluminium, lead, polyethylene, etc.), electrical parts and mechanical parts are excluded. Test Common reauirements for test 6.1.1 container which is use
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