ImageVerifierCode 换一换
格式:PDF , 页数:3 ,大小:130.78KB ,
资源ID:433280      下载积分:2000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-433280.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ANSI ASTM F689-1997 Standard Practice for Determination of the Temperature of Above-Ground Plastic Gas Pressure Pipe within Metallic Casings《测定内壁金属铸件塑料气压管道地面温度惯例》.pdf)为本站会员(jobexamine331)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

ANSI ASTM F689-1997 Standard Practice for Determination of the Temperature of Above-Ground Plastic Gas Pressure Pipe within Metallic Casings《测定内壁金属铸件塑料气压管道地面温度惯例》.pdf

1、Designation: F689 97 (Reapproved 2011) An American National StandardStandard Practice forDetermination of the Temperature of Above-Ground PlasticGas Pressure Pipe Within Metallic Casings1This standard is issued under the fixed designation F689; the number immediately following the designation indica

2、tes the year of originaladoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice describes a procedure for the

3、determina-tion of the temperature history of above-ground plastic gaspressure pipe encased in a metallic casing. Such temperaturechanges may be due to ambient air temperature, or solarexposure, or both.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in paren

4、theses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priat

5、e safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D2513 Specification for Polyethylene (PE) Gas PressurePipe, Tubing, and FittingsE220 Test Method for Calibration of Thermocouples ByComparison Techniques2.

6、2 Other Document:Thermoplastic Fuel Gas Piping/Investigation of MaximumTemperatures Attained by Plastic Pipe Inside Metal Ser-vice Risers, TR 30, Plastic Pipe Institute, May 197833. Terminology3.1 Definitions:3.1.1 anodeless riserA type of transition fitting that isdesigned to transport gas from an

7、underground polyethyleneservice line to above-ground steel piping. In an anodeless riserpolyethylene pipe is always the gas carrier, at least, in thebelow ground section.3.1.2 plastic gas pipean approved gas carrier that com-plies with Specification D2513.4. Significance and Use4.1 This practice pro

8、vides a procedure for determining thetemperature history of plastic gas pressure pipe encased inmetallic casings.4.2 The data obtained are indicative of the temperatureattainable within a service riser of a specific design and size ina given geographical location under the climatogical conditionsin

9、existence during the test period.4.3 The data obtained can be used within the constraints of4.2 to design the maximum allowable operating pressurespermitted by existing codes.5. Apparatus5.1 Four-Channel Continuous Chart Thermocouple Re-corder.5.2 Thermocouple Probes.5.3 Solar Load Panel, 12 by 20 b

10、y 0.032 in. (300 by 500 by0.8 mm), steel, painted flat black with an insulated thermo-couple attached to the underside.5.4 Ambient Thermocouple Apparatus, consisting of a well-ventilated, shaded housing containing a thermocouple formonitoring ambient air temperature (see Fig. 1).6. Test Specimens6.1

11、 The riser may be either preassembled or fabricated inaccordance with written procedures.6.2 The outlet from the specimen defined by 6.1 shall becapped to simulate no-flow (stagnant) conditions.6.3 The riser shall be fitted with a bare junction type “J” or“K” thermocouple probe 2030 AWG that shall b

12、e installed 3in. below the internal transition on the polyethylene pipe. Theprobe tip shall be embedded into the outer surface of thepolyethylene pipe by using a soldering iron. The thermocouple1This practice is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct

13、responsibility of Subcommittee F17.60 on Gas.Current edition approved Feb. 1, 2011. Published March 2011. Originallyapproved in 1980. Last previous edition approved in 2004 as F689 97(2004). DOI:10.1520/F0689-97R11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM

14、Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Plastics Pipe Institute (PPI), 105 Decker Court, Suite 825,Irving, TX 75062, http:/www.plasticpipe.org.Copyright ASTM Internationa

15、l, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides

16、and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1wiring shall follow the piping and exit out the horizontalportion of the riser (see Fig. 2).6.4 At least two specimens shall be used at each test site.7. Procedure7.1 Calibrate all thermocouple re

17、corder combinations inaccordance with Method E220.7.2 Install the riser so that the bare thermocouple probelocation is 6 6 1 in. (150 m 6 25 mm) above grade and facingsouth. Install a vertical reflective panel 8 6 1 in. (200 6 25mm) due north of the specimens, facing due south. Thereflective panel s

18、hall be at least 1 ft (300 mm) higher than theexposed height of the specimens and shall extend at least 1 ft(300 mm) beyond the center line of the test specimen in eachhorizontal direction. The panel shall have a matte-whitesurface. A bed of light-colored crushed stone shall be providedextending fro

19、m the reflective panel at least 1 ft (300 mm)beyond the test specimen (see Fig. 2). Connect specimenthermocouples to the continuous chart recorder.7.3 Install the ambient thermocouple apparatus in accor-dance with Fig. 1 within the immediate vicinity of thespecimen and connect it to the continuous c

20、hart recorder. Anoptional fifth thermocouple may be installed 12 in. belowgrade.7.4 Install the solar load panel in the immediate vicinity ofthe specimen facing due south, and inclined at an angle withthe horizontal equal to local latitude. The panel shall be locatedso that it will receive maximum d

21、irect sunlight. Connect thesolar load thermocouple to the continuous chart recorder.7.5 Monitor riser temperatures and compare these data withdaily ambient and solar load readings. These temperaturecomparisons will yield a relationship of solar radiation, cloudcover, thermal induction, and other par

22、ameters. These data canthen be compared with data obtained at other geographiclocations.7.6 Record any abnormal test conditions.7.7 The measurements should be taken during the warmestmonths of the year as determined from local meteorologicalrecords (for example, month with the highest ambient temper

23、a-ture and least amount of cloud cover).FIG. 1 Weather StationFIG. 2 Self-Centering Riser SI EquivalentsF689 97 (2011)27.8 The test data should be compared with the historicalrecords for the ambient temperature and cloud cover to ensurethat the test period was typical for both average ambienttempera

24、ture and hours of sunshine.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infri

25、ngement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standar

26、d or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your view

27、s known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contactin

28、g ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 97 (2011)3

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1