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ASTM E1035-2008 核反应堆容器支承结构的中子辐照测定的标准实施规程
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【英文标准名称】: Standard Practice for Determining NeutronExposures for Nuclear Reactor Vessel Support Structures
【原文标准名称】: 核反应堆容器支承结构的中子辐照测定的标准实施规程
【标准号】: ASTM E1035-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: E10.05
【标准类型】: (Practice)
【标准水平】: ()
【中文主题词】:
【英文主题词】: neutron; radiation; ferritic; vessel; dosimetric; reactor; pressurized; Dosimetry; Ferritic materials; Neutron radiation--nuclear materials/applications; Nuclear reactor vessels; Radiation exposure--nuclear materials/applications; Structural analysis/appl
【摘要】: Prediction of neutron radiation effects to pressure vessel steels has long been a part of the design and operation of light water reactor power plants. Both the federal regulatory agencies (see 2.2) and national standards groups (see 2.1) have promulgated regulations and standards to ensure safe operation of these vessels. The support structures for pressurized water reactor vessels may also be subject to similar neutron radiation effects (1, 2, 3, 4, 5). The objective of this practice is to provide guidelines for determining the neutron radiation exposures experienced by individual vessel supports. It is known that high energy photons can also produce displacement damage effects that may be similar to those produced by neutrons. These effects are known to be much less at the belt line of a light water reactor pressure vessel than those induced by neutrons. The same has not been proven for all locations within vessel support structures. Therefore, it may be prudent to apply coupled neutron-photon transport methods and photon induced displacement cross sections to determine whether gamma-induced dpa exceeds the screening level of 3.0 x00D7; 10-4, used in this practice for neutron exposures. See 1.2.1.1 This practice covers procedures for monitoring the neutron radiation exposures experienced by ferritic materials in nuclear reactor vessel support structures located in the vicinity of the active core. This practice includes guidelines for: 1.1.1 Selecting appropriate dosimetric sensor sets and their proper installation in reactor cavities. 1.1.2 Making appropriate neutronics calculations to predict neutron radiation exposures. 1.2 This practice is applicable to all pressurized water reactors whose vessel supports will experience a lifetime neutron fluence (E > 1 MeV) that exceeds 1 x00D7; 1017 neutrons/cm2 or 3.0 x00D7; 10x2212;4 dpa. (See Terminology E 170.) 1.3 Exposure of vessel support structures by gamma radiation is not included in the scope of this practice, but see the brief discussion of this issue in 3.2. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
【中国标准分类号】: F74
【国际标准分类号】: 27_120_20
【页数】: 3P.;A4
【正文语种】: 英语

关键字: ASTM E1035-

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