Product Code:SAE ARP4721/2
Title:Monitoring Aircraft Noise and Operations in the Vicinity of Airports: System Validation
Issuing Committee:A-21 Aircraft Noise Measure Noise Aviation Emission Modeling
Scope:This SAE Aerospace Recommended Practice (ARP) provides engineering methods that can be applied to monitoring aircraft noise and operations in the vicinity of airports using either attended or unattended monitoring systems, as well as methods for validation of measurement results from permanent systems. Part 1 provides guidance on the components, installation and administration of permanent systems and guidance on analysis of data collected from temporary monitoring of aircraft noise. Part 2, this part, describes both system screening tests and detailed test methods for validating the data reported by permanently installed systems. This document is intended as a guide toward standard practice and is subject to change with experience and technical advances.

标准名称：	榫槽面带颈承插焊钢制管法兰
英文名称：	Hubbed socket welding steel pipe flanges with tongue and groove face
中标分类：	机械 >> 通用零部件 >> 管路附件
ICS分类：	流体系统和通用件 >> 管道部件和管道 >> 法兰、管接头及其连接件
替代情况：	GB/T 9117.7-1988 GB/T 9117.8-1988;被GB/T 9117-2010代替
发布部门：	国家质量技术监督局
发布日期：	2000-09-02
实施日期：	2001-07-01
首发日期：	1988-04-25
作废日期：	2011-10-01
主管部门：	中国机械工业联合会
归口单位：	全国管路附件标准化技术委员会
起草单位：	机械科学研究院
出版社：	中国标准出版社
出版日期：	1900-01-01
页数：	4页

本标准规定了公称压力PN为5.0、11.0、15.0和26.0MPa的榫槽面带颈承插焊钢制管法兰的型式和尺寸。本标准适用于公称压力PN5.0～PN26.0MPa的榫槽面带颈承插焊钢制管法兰。

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