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1、Approval StandardforFire Pump Flowmeter SystemsClass Number 1046January 19872002 FM Global Technologies LLC.All rights reserved.ForewordFM Approvals are intended to verify that the products and services described will meet stated conditions ofperformance,safety and quality useful to the ends of prop
2、erty conservation.The purpose of FM ApprovalStandards is to present the criteria for FM Approval of various types of products and services,as guidance forFM Approvals personnel,manufacturers,users and authorities having jurisdiction.Products submitted for Approval shall demonstrate that they meet th
3、e intent of the Approval Standard,and thatquality control in manufacturing and/or applications shall ensure a consistently uniform and reliable product orservice.FM Approval Standards strive to be performance-oriented and to facilitate technological development.For examining equipment,materials and
4、services,FM Approval Standards:a)must be useful to the ends of property conservation by preventing,limiting or not causing damageunder the conditions stated by the Approval listing;andb)must be readily identifiable.Continuance of Approval and Listing depends on compliance with the Approval agreement
5、,satisfactoryperformance in the field,on successful re-examinations of equipment,materials,and services as appropriate,andon periodic follow-up audits of the manufacturing facility or service/application.FM Global Technologies LLC reserves the right in its sole judgement to change or revise its stan
6、dards,criteria,methods,or procedures.TABLE OF CONTENTSI.INTRODUCTION.11.1 Purpose.11.2 Scope.11.3 Basis for FM Approval.11.4 Basis for Continued Approval.11.5 Requirements.11.6 Effective Date.21.7 System of Units.2II.GENERAL INFORMATION.22.1 Product Information.2III.GLOSSARY.2IV.GENERAL REQUIREMENTS
7、(OTHER THAN PERFORMANCE REQUIREMENTS).34.1 Minimum Meter Size.34.2 Flow Measurement Device.44.3 Markings.44.4 Instructions.44.5 Physical or Structural Features.44.6 Drawings/Plans/Specifications Required.44.7 Other Requirements.5V.PERFORMANCE REQUIREMENTS.55.1 Operation and Accuracy.55.2 Hydrostatic
8、 Strength.55.3 Friction Loss Determination.6VI.MANUFACTURING AND FIELD INSTALLATION REQUIREMENTS.66.1 Demonstrated Quality Control Program.66.2 Facilities and Procedures Audit(F&PA).7APPENDIX A:APPROVAL MARKS.8APPENDIX B:UNITS OF MEASUREMENT.9I.INTRODUCTION1.1 PurposeThis standard states FM Approval
9、 requirements for fire pump flowmeter systems used to determine the dischargeof a fire pump.1.2 ScopeThere are many devices and methods for measuring the flow of liquids through a pipeline.The devices examinedto the requirements of this standard shall be specificallyApproved for use on fire pump sys
10、tems,and a particularmodel or models shall be specified for a particular pump size.1.3 Basis for FM ApprovalFM Approval is based upon satisfactory evaluation of the product and the manufacturer in the following majorareas:1.3.1 Examination and tests on production samples shall be performed to evalua
11、te the suitability of the product;and the proper operation and performance of the product as specified by the manufacturer and required byFM Approvals.1.3.2 An examination of the manufacturing facilities and audit of quality control procedures shall be made toevaluate the manufacturers ability to pr
12、oduce the product which is examined and tested,and the markingprocedures used to identify the product.These examinations are repeated as part of FM Approvalsproductfollow-up program.1.4 Basis for Continued ApprovalContinued Approval is based upon:production or availability of the product as currentl
13、y Approved;the continued use of acceptable quality control procedures;satisfactory field experience;compliance with the terms stipulated in the Approval Agreement;and re-examination of production samples for continued conformity to requirements.1.5 Requirements1.5.1 The requirements of this standard
14、 are based on experience,research and testing and/or the standards ofother national and international organizations.The advice of manufacturers,users,trade associations andloss control specialists was also considered.1.5.2 Meeting these requirements qualifies a product as an Approved fire pump flowm
15、eter system.January 19871046FM APPROVALS11.5.3 The requirements of this standard reflect tests and practices used to examine characteristics of fire pumpflowmeter systems for the purpose of obtaining FM Approval.These requirements are intended primarilyas guides,and strict conformity is not always m
16、andatory.Fire pump flowmeter systems having charac-teristics not anticipated by this standard may beApproved if performance equal or superior to that requiredby this standard is demonstrated,or if the intent of the standard is met.Alternatively,flowmeters whichdo meet all the requirements identified
17、 in this standard may not be Approved if other conditions whichadversely affect performance exist or if the intent of this standard is not met.1.6 Effective DateThe effective date of anApproval standard mandates that all products tested forApproval after the effective dateshall satisfy the requireme
18、nts of that standard.ProductsApproved under a previous edition shall comply with thenew version by the effective date or else forfeit Approval.The effective date shall apply to the entire Approvalstandard,or,where so indicated,only to specific paragraphs of the standard.1.7 System of UnitsUnits of m
19、easurement are English System standard units.These are followed by their arithmetic equivalents inInternational System(SI)units,enclosed in parentheses.Appendix B lists the selected units for quantities dealtwith in testing these products;conversions to SI units are included.Conversion of U.S.custom
20、ary units is inaccordance with ASTM E380.II.GENERAL INFORMATION2.1 Product InformationFire pump flowmeter systems are used to measure the flow output of fire pumps during testing;when installedthey perform the same function as a system of 212inch fire hose and playpipes.The system is permanentlyinst
21、alled in a pipeline which connects the discharge of the pump to the suction supply of the pump or to drainfacilities.The system is isolated from the pump discharge during pump operations other than flow testing.III.GLOSSARYFor purposes of this standard,the following terms apply:Flow Element The flow
22、 element is that part of the system which is permanently installed in the meterline.The device generates a signal(i.e.,a secondary flow,a pressure differential,an electrical signal,orother)which is proportional to the flow of water discharging from the pump and which is sent to the flowmeasurement d
23、evice.The flow element may be a venturi tube,orifice plate,magnetic meter,pilot tube,orother device,and may be made up of a combination of these devices.1046January 19872FM APPROVALSFlow Measurement Device The flow measurement device is that part of the system which displays thesignal produced by th
24、e flow element as a flow rate.This instrument may be portable or permanentlyinstalled.The flow measuring instrument may be a manometer,a differential meter with linear or squareroot scale,a rotameter,an electrical meter,or other readout device.IV.GENERAL REQUIREMENTS(OTHER THAN PERFORMANCE REQUIREME
25、NTS)4.1 Minimum Meter Sizea)The following minimum meter sizes(nominal pipe size of the meter line)shall be observed:Pump RatingMeter Line Sizegal/min(dm3/min)inchesmm200(760)3(76)250(950)3.5(89)300(1140)3.5(89)450(1710)4(102)500(1890)5(127)750(2830)5(127)1000(3790)6(152)1250(4730)6(152)1500(5675)8(2
26、03)2000(7570)8(203)2500(9460)8(203)3000(11340)8(203)3500(13250)10(254)4000(15140)10(254)4500(17030)10(254)5000(18925)12(305)b)These values are based on an expected maximum head loss through the meter line(including pipe,fittings,valves,elevation and the meter)of less than or equal to 100 feet(30.5 m
27、)of straight pipe(Schedule 40),basedon the Hazen&Williams formula with C equal to 120.c)Some pump installations may have head losses through the meter line of greater than 100 equivalent feet.Inthese situations,a larger meter and associated piping would be required.It is permissible for the manufact
28、urerto anticipate this situation,and to have a larger than minimum size(see Paragraph 4.1 a)flowmeter systemApproved for a particular pump.For example,a 6 inch(152 mm)meter,the minimum size for a 1000 or1250 gal/min(3785 or 4730 dm3/min)pump,could be equipped with an additional scale for use with a
29、500 or750 gal/min(1895 or 2840 dm3/min)pump.These additional combinations would be subjected to the sameexamination as the rest of the systems in the manufacturers line.January 19871046FM APPROVALS34.2 Flow Measurement Device4.2.1 The scale of the device shall read in units of volume per unit of tim
30、e.Dual scales are permitted,andsystems marketed in the United States shall read in gallons per minute(gal/min).4.2.2 The range of the device shall be at least 200 percent of the rated capacity of the pump for which it willbe used.4.3 MarkingsEach component of the system shall be permanently marked w
31、ith the manufacturers trademark;applicableoperating characteristics such as rated working pressure,range and size,model or type number,year of manu-facture;and the FM Approval mark.4.4 InstructionsThe manufacturer shall provide installation/operation procedures and maintenance instructions with each
32、 system.Details of recommended upstream and downstream piping configurations shall be included.4.5 Physical or Structural Features4.5.1 Sizes System sizes shall be compatible with pump ratings(see Paragraph 4.1a).4.5.2 Rated Working Pressure All system components that come in contact with system wat
33、er shall have aminimum rated working pressure of 175 psi(1.2 Mpa).4.5.3 Materials a)All flow element components shall be constructed of materials suitable to resist the ambient conditionscommon to fire pump installations.If the build-up of corrosion and corrosion products will have adetrimental effe
34、ct on system performance,those parts that come in contact with moisture shall be madefrom corrosion resistant materials.b)Rubber or rubber-like materials contained in system components may be subjected to a detailedinvestigation,including evaluation of water absorption,hardness,aging and adhesion.4.
35、5.4 Operation and Failure Mode Fire pump flowmeter systems are used on an infrequent basis and mustremain idle for long periods.When they are used,they must perform accurately and reliably.If there is asystem malfunction which could cause inaccurate flow readings,this condition shall be readily appa
36、rentto the operator.4.5.5 End Connections End connections for the in-line portion of the system shall be compatible with firepump piping connections.These may be flanged ends,wafer-type elements to fit between flangedconnections,or other configurations.4.6 Drawings/Plans/Specifications RequiredThe m
37、anufacturer shall provide general assembly drawings,piping and electrical schematics,materials lists,nameplate format,brochures,sales literature,specification sheets,etc.1046January 19874FM APPROVALS4.7 Other RequirementsFire pump flowmeter systems are composed of flow elements and flow measuring de
38、vices which are specificallydesignated for a particular pump rating.No attempt should be made to use any of the component parts forpurposes other than that intended by the manufacturer.This precaution shall be clearly stated by themanufacturer.V.PERFORMANCE REQUIREMENTSRepresentative samples of a li
39、ne of fire pump flowmeters shall be tested,typically two or three sizes.Dependingon the circumstances of the project,this testing shall be performed at FM Approvals,or at flow testing facilitiesprovided by the manufacturer.Additional flow data for the remaining sizes shall be provided and shall beev
40、aluated during the system examination.5.1 Operation and Accuracy5.1.1 RequirementThe system shall display an accuracy of 2 percent full scale deflection,for the range of flows from50 percent to 200 percent of the rated capacity of the pump for which it will be used.For example,a device used on a 100
41、0 gal/min(3785 dm3/min)pump shall be accurate within 40 gal/min(150 dm3/min)for all flow rates in the range from 500 gal/min to 2000 gal/min(1895 to 7570 dm3/min).5.1.2 Test/VerificationSufficient flow tests shall be performed on the samples selected to ensure that the system meets the aboverequirem
42、ents.Flow measurements shall be easy to read within minimal fluctuation or oscillation of thereadings.5.2 Hydrostatic Strength5.2.1 RequirementThe flow element of the in-line portion of the system and the meter portion of the system shall resistrupture or permanent deformation when subjected to hydr
43、ostatic pressure as indicated below.5.2.2 Test/Verificationa)The flow element of the in-line portion of the system shall be hydrostatically tested to 700 psi(4.8 MPa)or 400 percent of the rated working pressure(whichever is greater)for 5 minutes.No ruptureor permanent deformation shall result.b)The
44、meter portion of the system,including the signal lines,shall be hydrostatically tested to 350 psi(2.4 Mpa)or 200 percent of the rated working pressure(whichever is greater)for 5 minutes.No ruptureor permanent deformation shall result.January 19871046FM APPROVALS55.3 Friction Loss Determination5.3.1
45、RequirementThere is no specification for this loss,although systems with excessively high friction loss shall beevaluated on a case-by-case basis.5.3.2 Test/VerificationFriction loss through the meter shall be determined during the system evaluation.VI.MANUFACTURING AND FIELD INSTALLATION REQUIREMEN
46、TS6.1 Demonstrated Quality Control Program6.1.1 Aquality control program is required to assure that each subsequent fire pump flowmeter system producedby the manufacturer shall present the same quality and reliability as the specific samples examined.Designquality,conformance to design,and performan
47、ce are the areas of primary concern.Design quality is determined during the examination and tests,and is covered in the Approval report.Conformance to design is verified by control of quality in the following areas:existence of corporate quality control guidelines incoming inspection and test in-pro
48、cess inspection and test final inspection and test equipment calibration drawing and change control packaging and shippingQuality of performance is determined by field performance and by re-examination and test.6.1.2 The manufacturer shall establish a system of product configuration control to preve
49、nt unauthorizedchanges,including,as appropriate:engineering drawings engineering change requests engineering orders change noticesThese shall be executed in conformance with a written policy and detailed procedures.Records of allrevisions to all Approved products shall be kept.1046January 19876FM AP
50、PROVALS6.1.3 The manufacturer shall assign an appropriate person or group to be responsible for keeping FM Approvalsinformed of all pending changes applicable to Approved products.FM Approvals Form 797,ApprovedProduct Revision Report or Address/Contact Change Notice,is provided to notify FM Approval