_RP_631M-1981_1986_scan.pdf

LIBRARY COPYMMC OIL GAS LIBRARYMMC OIL GAS LIBRARY5公Measurement of Noise fromAir-Cooled Heat ExchangersAPI RECOMMENDED PRACTICE 631MFIRST EDITION,JUNE 1981REAFFIRMED,JANUARY 1986American Petroleum Institute1220 L Street,NorthwestWashington,D.C.20005o6.045AMEACC NO.7217MMC OIL GAS LIBRARY150CT1992Measurement of Noise fromAir-Cooled Heat ExchangersRefining DepartmentAPI RECOMMENDED PRACTICE 631MFIRST EDITION,JUNE 1981OFFICIAL PUBLICATIONREG.U.S PATENT OFFICESPECIAL NOTES1.API PUBLICATIONS NECESSARILY ADDRESS PROBLEMS OF AGENERAL NATURE WITH RESPECT TO PARTICULAR CIRCUM-STANCES,LOCAL,STATE,AND FEDERAL LAWS AND REGULATIONSSHOULD BE REVIEWED2.API IS NOT UNDERTAKING TO MEET THE DUTIES OF EMPLOYERSMANUFACTURERS,OR SUPPLIERS TO WARN AND PROPERLY TRAINAND EQUIP THEIR EMPLOYEES,AND OTHERS EXPOSED,CON-CERNING HEALTH AND SAFETY RISKS AND PRECAUTIONS,NORUNDERTAKING THEIR OBLIGATIONS UNDER LOCAL,STATE,ORFEDERAL LAWS3.INFORMATION CONCERNING SAFETY AND HEALTH RISKS ANDPROPER PRECAUTIONS WITH RESPECT TO PARTICULAR MATERIALSAND CONDITIONS SHOULD BE OBTAINED FROM THE EMPLOYER.THEMANUFACTURER OR SUPPLIER OF THAT MATERIAL,OR THEMATERIAL SAFETY DATA SHEET.4.NOTHING CONTAINED IN ANY API PUBLICATION IS TO BECONSTRUED AS GRANTING ANY RIGHT,BY IMPLICATION OROTHERWISE,FOR THE MANUFACTURE,SALE,OR USE OF ANYMETHOD,APPARATUS,OR PRODUCI COVERED BY LETTERS PATENTNEITHER SHOULD ANYTHING CONTAINED IN THE PUBLICATION BECONSTRUED AS INSURING ANYONE AGAINST LIABILITY FORINFRINGEMENT OF LETTERS PATENT5.GENERALLY,API STANDARDS ARE REVIEWED AND REVISEDREAFFIRMED,OR WITHDRAWN AT LEAST EVERY FIVE YEARSSOMETIMES A ONE-TIME EXTENSION OF UP TO TWO YEARS WILL BEADDED TO THIS REVIEW CYCLE THIS PUBLICATION WILL NOLONGER BE IN EFFECT FIVE YEARS AFTER ITS PUBLICATION DATE ASAN OPERATIVE APISTANDARD OR,WHERE ANEXTENSION HAS BEENGRANTED,UPON REPUBLICATION.STATUS OF THE PUBLICATIONCAN BE ASCERTAINED FROM THE API AUTHORING DEPARTMENTTELEPHONE(202)682-8000.A CATALOG OF API PUBLICATIONS ANDMATERIALS IS PUBLISHED ANNUALLY AND UPDATED QUARTERLYBY API,1220 L STREET,N.W.,WASHINGTON,D.C.20005Copyright 1981 American Petroleum InstituteOFOREWORDThis recommended practice is based on the accumulated knowledge and experience ofpetroleum refiners,air-cooled heat exchanger manufacturers,and engineering contrac-tors.The objective of this publication is to provide a standard test procedure for mea-surement of noise emanating from air-cooled heat exchangers Separate procedures fortesting of an isolated single bay and for testing of a single bay of an installed unit aregiven.Testing the isolated single bay is considered a more accurate procedureThe test procedure for installed air-cooled heat exchangers is similar to the proceduregiven in CONCAWEE Report Number 5/78,Method for Determining the Sound-Power Levels of Air-Cooled(air-fin)Heat ExchangersComparative tests have shownthat the two procedures yield similar results within 2 decibels.Although it is recognized that the purchaser may desire to modify,delete.or amplifysections of the practice,it is strongly recommended that all such changes be made bysupplementing this practice rather than by rewriting or by incorporating sections into an-other complete practiceSuggested revisions are invited and should be submitted to the director of the RefiningDepartment,American Petroleum Institute,1220 L Street,N.W.,Washington.D.C.20005CONTENTSPAGESECTION I-GENERAL1.I Purpose1.2 Scope1.3 Instrumentation11.4 Nomenclature and Definitions1.4.I Nomenclature1.4.2 DefinitionsSECTION 2-PROCEDURE FOR CONDUCTING NOISE TESTSON AN ISOLATED SINGLE BAY2.I Procedure for Obtaining Noise Test Data22.1.I Description of Test Set-Up，。22.1.2 Test Conditions22.1 3 Location of Test Measuring Points2.I.4 Checklist.32.1.5 Recording of Data2.2 Calculations and Interpretation22 I Reducing Test Data42.2.2 Application of Reduction Procedures2 3 Reporting of Data62.3.1 General Requirements62.3.2 Summary.62.3.3 Requirements for Data Sheet6SECTION 3-PROCEDURE FOR CONDUCTING NOISE TESTSON INSTALLED UNIIS3.I Procedure for Obtaining Noise Test Data3.II Description and Requirements of Test63.1.2 Test Conditions3.1.3 Location of Test Measuring Points.3.1.4 Checklist3.1.5 Recording of Data.3.2 Calculations and Interpretation83.2.1 Reducing Test Data3.2.2 Application of Reduction Procedures103.3 Reporting of Data3.3.1 General Requirements13.3.2 Summary113.3.3 Requirements for Data Sheet1APPENDIX A-MODEL FORMAT FOR NOISE TEST REPORT13APPENDIX B-EXAMPLE NOISE TEST REPORT FOR AN ISOLATED SINGLEBAY TEST21APPENDIX C-EXAMPLE NOISE TEST REPORT FOR AN INSTALLED UNIT31LIST OF ILLUSTRATIONSFigures1-Isolated Single Bay Noise Measurement Points2-Air-Cooled Heat Exchanger SPL Test Measurement Points for an Induced-DraftUnit8