SL 72-1994 水利建设项目经济评价规范 SL 72-94
作者:标准资料网 时间:2024-05-11 17:12:23 浏览:9274
来源:标准资料网
基本信息
| 标准名称： | 水利建设项目经济评价规范 SL 72-94 |
| 英文名称： | regulation for economic evaluation of water conservancy construction projects |
| 中标分类： |
工程建设 >>
水利、水电工程 >>
水利、水电工程综合 |
| 替代情况： | SD 139-1985 |
| 发布部门： | 中华人民共和国水利部 |
| 发布日期： | 1994-03-09 |
| 实施日期： | 1994-05-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 主管部门： | 中华人民共和国水利部 |
| 起草单位： | 水利水电规划设计总院 |
| 出版日期： | 1900-01-01 |
| 页数： | 52页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 工程建设 水利 水电工程 水利 水电工程综合
【英文标准名称】:Welding-Arcstudweldingofmetallicmaterials(ISO14555:1998);GermanversionENISO14555:1998
【原文标准名称】:焊接.金属材料的电弧螺柱焊接
【标准号】:DINENISO14555-1998
【标准状态】:作废
【国别】:德国
【发布日期】:1998-12
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;规范(验收);螺柱焊接;焊接程序规范;定义;人员;材料;焊接设备;质量保证;金属;空白格式;金属焊接;焊接;专家;焊接工艺;电极端起弧;认可;金属材料;外观检查(试验);电弧焊接;焊接工程;质量要求;生产控制
【英文主题词】:
【摘要】:
【中国标准分类号】:J33
【国际标准分类号】:25_160_10
【页数】:48P;A4
【正文语种】:德语
Product Code:SAE AIR5892
Title:Nonvolatile Exhaust Particle Measurement Techniques
Issuing Committee:E-31 Aircraft Exhaust Emissions Measurement Committee
Scope: This SAE Aerospace Information Report (AIR) addresses procedures applicable to quantifying the emission of nonvolatile particulate matter at the exit plane of aircraft gas turbine engines. While both volatile and nonvolatile particulate matter (PM) are present in aircraft gas turbine exhaust, the methods used to measure nonvolatile particles are farther advanced and are addressed here.Existing PM measurement regulations employ the SAE Smoke Number measurement (Reference 2.1.1), a stained filter technique used in evaluating visible emissions. The environmental and human health issues associated with submicronic PM emissions require more detailed measurement of the mass, size, and quantity of these particle emissions.Responding to regulatory agency requests, this AIR describes measurement techniques that are well developed and could be applied to the measurement of aircraft engine particulate matter. The techniques discussed here are considered relevant for measuring particle parameters identified with environmental and health concerns. The discussion that follows is based on research made while developing measurement techniques and in scientific and engineering experiments regarding PM emissions. The techniques are not yet used in routine aircraft engine certification. Future use in regulatory testing is likely to involve further refinements in methodology and application. It is planned that these refinements will be included in the subsequent publication of an Aerospace Recommended Practice.The distinction between nonvolatile and volatile particle types is a critical task in the measurement of particles in aircraft engine exhaust. Appendix A, SAE E-31 Position Paper on Particle Matter Measurements, provides additional technical bases for the scope of this AIR. The measurement methods for volatile condensed particles in turbine exhaust will be covered in a subsequent report. Observations to date show that volatile particles occur mainly at diameters less than 10 nanometers (
Rationale: This SAE Aerospace Information Report (AIR) addresses procedures applicable to quantifying the emission of nonvolatile particulate matter at the exit plane of aircraft gas turbine engines. While both volatile and nonvolatile particulate matter (PM) are present in aircraft gas turbine exhaust, the methods used to measure nonvolatile particles are farther advanced and are addressed here.Existing PM measurement regulations employ the SAE Smoke Number measurement (Reference 2.1.1), a stained filter technique used in evaluating visible emissions. The environmental and human health issues associated with submicronic PM emissions require more detailed measurement of the mass, size, and quantity of these particle emissions.Responding to regulatory agency requests, this AIR describes measurement techniques that are well developed and could be applied to the measurement of aircraft engine particulate matter. The techniques discussed here are considered relevant for measuring particle parameters identified with environmental and health concerns. The discussion that follows is based on research made while developing measurement techniques and in scientific and engineering experiments regarding PM emissions. The techniques are not yet used in routine aircraft engine certification. Future use in regulatory testing is likely to involve further refinements in methodology and application. It is planned that these refinements will be included in the subsequent publication of an Aerospace Recommended Practice.The distinction between nonvolatile and volatile particle types is a critical task in the measurement of particles in aircraft engine exhaust. Appendix A, SAE E-31 Position Paper on Particle Matter Measurements, provides additional technical bases for the scope of this AIR. The measurement methods for volatile condensed particles in turbine exhaust will be covered in a subsequent report. Observations to date show that volatile particles occur mainly at diameters less than 10 nanometers (
