1、Designation: F 1200 88 (Reapproved 2004)An American National StandardStandard Specification forFabricated (Welded) Pipe Line Strainers (Above 150 psigand 150F)1This standard is issued under the fixed designation F 1200; the number immediately following the designation indicates the year oforiginal a
2、doption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers welded strainers in servicesabove 150 psig
3、 or 150F (1 MPa and 65C). For weldedstrainers in services at or below these ratings and cast strainers,see Specification F 1199.1.2 This specification provides the minimum requirementsfor the design fabrication, rating, marking, and testing ofwelded pipe line strainers for services above 0F (18C).1.
4、3 Strainers manufactured to this specification are accept-able for use in the marine environment.1.4 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.5 The following safety hazards caveat pertains only to thetest metho
5、ds portion, Section 8, of this specification. Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory li
6、mita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2D 93 Test Methods for Flash Point by Pensky-MartensClosed Cup TesterF 722 Specification for Welded Joints for Shipboard PipingSystemsF 1199 Specification for Cast (all Temperatures and Pres-sures) and Welded Pipe Line Strainers (150
7、psig and 150FMaximum)2.2 ANSI Standards:3B2.1 Pipe ThreadsB16.1 Cast Iron Pipe Flanges and Flanged FittingsB16.3 Malleable Iron Threaded FittingsB16.4 Cast Iron Threaded FittingsB16.5 Steel Pipe Flanges and Flanged FittingsB16.11 Forged Steel Fittings, Socket-Welding and ThreadedB16.15 Cast Bronze T
8、hreaded FittingsB16.24 Bronze Pipe Flanges and Flanged FittingsB16.25 Buttwelding EndsB31.1 Power Piping2.3 MSS Standards:4SP-51 150 lb Corrosion Resistant Cast Flanges and FlangedFittingsSP-63 High Strength Wrought Welding Fittings2.4 ASME Standard:5ASME Boiler and Pressure Vessel Code: Section VII
9、I,Division 1, Pressure VesselsASME Boiler and Pressure Vessel Code: Section IX, Weld-ing and Brazing Qualifications3. Terminology3.1 Definitions:3.1.1 basket or elementthe replaceable part in a strainerthat performs the barrier separation of solid particles fromflowing fluid. It is normally removabl
10、e for cleaning andservicing and can be furnished in a wide variety of materials,particle size removal capability, straining area, and types ofconstruction. Interchangeable baskets or elements are normallyavailable for a given make, model, and size strainer.3.1.2 maximum allowable working pressure (M
11、AWP)thehighest internal pressure that the strainer can be subjected to inservice. The maximum nonshock working pressure for which astrainer is rated by the manufacturer.3.1.3 maximum design temperaturethe maximum tem-perature (MAT) for which the strainer is rated by the manu-facturer.3.1.4 strainera
12、 device which, when installed in a pipeline, provides a mechanical means of removing solids from aflowing liquid or gas by using a barrier element.1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.11
13、 onMachinery and Piping Systems.Current edition approved Nov. 1, 2004. Published November 2004. Originallyapproved in 1988. Last previous edition approved in 1998 as F 1200 88 (1998).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.
14、org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.4Available from American Society of Mechanical Engineers (ASME), ASMEIn
15、ternational Headquarters, Three Park Ave., New York, NY 10016-5990.5Available from Manufacturers Standardization Society of the Valve and FittingIndustry, 1815 N. Fort Myer Dr., Arlington, VA 22209.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, U
16、nited States.3.1.5 straining open areathe net effective open area of theclean element through which the fluid can pass.4. Classification4.1 Strainers may be classified into three general construc-tion categories, simplex, duplex (or multiplex), and automatic(self-cleaning), as follows:4.1.1 SimplexA
17、 strainer consisting of a single basket orelement chamber that normally requires the flow through theunit to be shut down before cleaning.4.1.1.1 Classifications of simplex strainers based on portalignment relative to basket or element chamber are Y, T, Z, andothers.4.1.2 Duplex (or Multiplex)A stra
18、iner usually consistingof at least two basket or element chambers separated by a valve(or valving) that permits continuous flow of fluid through onechamber while the other is accessible for cleaning.4.1.3 Automatic (Self-Cleaning)A strainer providingsome means for back-flushing or cleaning of the st
19、rainingelement while the unit is in service. It can have one or moreelements and may require periodic shutdown for maintenanceand inspection.4.2 Strainers may be further classified by pressure ratingsand types of port connections, port alignments relative to unitcenter lines, cover closures, valve t
20、ypes (in duplex), types ofbaskets or elements, materials of construction, and otherfeatures of design.5. Ordering Information5.1 Orders for products under this specification shall includethe following information as applicable. If a manufacturersstandardized product is being ordered, include all dat
21、a neededby the manufacturer to define the product.5.1.1 Make.5.1.2 Model (simplex or duplex).5.1.3 Port size.5.1.4 Port connections.5.1.5 Maximum allowable working pressure/temperaturerating.5.1.6 Body and cover material.5.1.7 Type of cover closure.5.1.8 Basket (element) material.5.1.9 Basket hole s
22、ize.5.1.10 Optional design features.5.1.11 Certification (see 6.4, 8.1.2.1, and Section 9).5.1.12 Nondestructive examination requirements (see 8.2).5.1.13 This ASTM standard designation number.5.1.14 Additional requirements or testing as contracted bythe manufacturer and purchaser.5.2 If a product i
23、s to be specified by performance criteriarather than model description, then the following should bespecified:5.2.1 Maximum allowable clean pressure loss at a givenflow capacity of a given liquid at a given viscosity.5.2.2 Temperature and pressure.5.2.3 Straining area.5.2.4 Minimum basket rupture di
24、fferential pressure (see7.9).5.2.5 Maximum valve seepage rates (see 7.8).5.2.6 Certification (see 6.4, 8.1.2.1, and Section 9).5.2.7 For self-cleaning strainers, specify basket cleaningeffectiveness and endurance testing.5.3 In general, the standard product description should notbe mixed with the pe
25、rformance criteria because conflictingspecifications can result (for example, maximum allowablepressure loss inconsistent with product size).6. Materials and Manufacture6.1 Strainer housings, as well as any pressure-retainingparts, including bolting used for pressure retention, shall beconstructed o
26、f materials listed in Section VIII, Division 1 of theASME Boiler and Pressure Vessel Code (hereafter calledASME Code) or ANSI/ASME B3.1. Bolts, screws, and fasten-ers in contact with interior fluid shall be of appropriatecorrosion-resistant material.6.2 The pressure ratings established under this sp
27、ecificationare based on materials of high quality produced under regularcontrol of chemical and mechanical properties by a recognizedprocess. The manufacturer shall be prepared to submit acertificate of compliance verifying that his product has beenmanufactured from material whose chemical and mecha
28、nicalproperties are at least equal to the requirements of an accept-able standard or specification.6.3 For materials not having values of allowable stresstabulated in Section VIII, Division 1 of the ASME Code,allowable stresses shall be determined in accordance with theprocedures outlined in Subsect
29、ion C and Appendix P of thatsection. Where it can be shown that the values of allowablestress listed for a particular material in one product form(because of similar chemistry, mechanical properties, heattreatment, and so forth) are applicable to the same material inan unlisted product form, the lis
30、ted values of allowable stressmay be used.6.4 Seals and parts, other than pressure-retaining parts andbolting used for pressure retention, shall be of materialssuitable for the service.6.5 Users are cautioned against applications with fluidswhich may react chemically with any materials used in these
31、products in contact with the fluid.7. Other Requirements7.1 The maximum allowable working pressure (MAWP)and maximum design temperature rating of strainers coveredunder this specification shall be established by at least one ofthe following methods:7.1.1 Proof test in accordance with the requirement
32、s pre-scribed in paragraph UG-101 of Section VIII of the ASMECode. If burst-type tests as outlined in paragraph UG-101(m)are used, it is not necessary to rupture the component. In thiscase, the value of B to be used in determining the MAWP shallbe the maximum pressure to which the component wassubje
33、cted without rupture. Safety of personnel shall be givenserious consideration when conducting proof tests. Compo-nents that have been subjected to a proof test shall not beoffered for sale.7.1.2 Design calculations in accordance with the require-ments prescribed in Section VIII, Division 1 of the AS
34、MECode.F 1200 88 (2004)27.1.3 Extensive and successful performance experience un-der comparable service conditions with similar materials maybe used as a basis for rating provided all other provisions ofthis specification are met.7.2 Strainers may be cast, forged, or fabricated of plates,tubes, or p
35、ipes. Welding on pressure-retaining componentsshall be as specified below.7.3 Welded joint design details shall be in accordance withSection VIII, Division 1 of the ASME Code except as noted in7.4 and 7.5. Supplemental radiography requirements are pre-sented in Section 8 of this specification. Welde
36、rs and weldprocedures shall be qualified in accordance with Section IX ofthe ASME Code. Except for fillet welds, all welds shall be fullpenetration welds extending through the entire thickness of theshell.7.4 Inlet and outlet connections consisting of welded flangesand fittings shall be in accordanc
37、e with Specification F 722.Pipe end connections for strainers shall be in accordance withone of the standards listed in 2.2 or 2.3. Where radiography isrequired by 8.2.2, all welded inlet and outlet connections shallbe butt-weld joints as required by Specification F 722 for Class1 piping systems.7.5
38、 Welds on strainers greater than 6-in. (152-mm) internaldiameter or 1.5-ft3(0.042-m3) net internal volume rated above600 psi (4.14 MPa) or 400F (204C) shall be of the followingtypes as listed in Table UW-12 of the ASME Code: Type (1) forCategory A joints; Types (1) or (2) for Category B joints; anda
39、ll Category C and D joints shall be full penetration weldsextending through the entire thickness of the vessel wall ornozzle wall. Welded joint categories are defined under UW-3 ofthe ASME Code.7.6 Post-weld heat treatment shall be in accordance withSection VIII, Division 1 except as noted in 7.6.1.
40、7.6.1 Strainers fabricated of carbon or low alloy steel,greater than 6-in. (152-mm) internal diameter or 1.5-ft3(0.042-m3) net internal volume, rated above 600 psi (4.14MPa) or 400F (204C), shall be post-weld, heat-treatedregardless of thickness.7.7 Threaded pipe connections shall be limited to thef
41、ollowing pressures:34 in. (19 mm) NPS and below.1500 psig (10.34 MPa) max1 in. (25 mm) NPS and below.1200 psig (8.27 MPa) max2 in. (50 mm) NPS and below.600psig (4.14 MPa) max3 in. (76 mm) NPS and below.400psig (2.76 MPa) max7.7.1 Threaded pipe joints above 2-in. (50-mm) nominalpipe size (NPS) shall
42、 not be used in systems that requireradiographic examination listed in 8.2.2.7.8 Duplex (or multiplex) strainer valve seepage rates shallbe minimized to prevent undue spillage of fluid under normaloperating conditions while the element is being serviced orcleaned in accordance with the manufacturers
43、 procedures.Maximum seepage rates with a specified liquid at a specifiedpressure and temperature may be as contracted by the manu-facturer and purchaser (see 5.2.5), and provision may be madeto include a test to determine acceptability before acceptancefor a given application.7.9 Baskets or elements
44、 shall withstand a minimum of10-psi (0.069-MPa) differential pressure without rupturing orsuch other differential pressure as contracted by manufacturerand purchaser (see 5.2.4) for the application involved.8. Test Methods8.1 Test all strainers by one of the following methods:8.1.1 Conduct a hydrost
45、atic test at 112 times the 100F(38C) rated MAWP of the strainer. Perform the test with wateror other liquid having a maximum viscosity of 40 SSU at125F (52C) with a maximum pressure test temperature of125F (52C). The minimum duration of the test shall be 15 sfor strainers less than 2-in. (50-mm) NPS
46、, 1 min for strainers212 through 8 in. (63 through 203 mm), and 3 min for largersizes. The purpose of this test is to detect leaks and structuralimperfections. No visible leakage is permitted.8.1.2 Strainers of 2-in. (50-mm) NPS and smaller with otherthan flanged connections may, at the option of th
47、e manufac-turer, be air tested to the lesser of 1.2 times MAWP or 80 psig(0.55 MPa). The minimum duration of the test shall be 15 s.Visually detectable leakage is not acceptable.8.1.2.1 If this option is exercised, the manufacturer shall beable to certify that a prototype of the same size strainer w
48、assubjected to a hydrostatic test in accordance with 8.1.1.8.2 Examine welds as follows:8.2.1 Visually examine all welds in accordance with ANSIB31.1.8.2.2 Welded inlet and outlet connections of a strainer thatare equal to or greater than 4-in. (100-mm) nominal diameteror 0.375-in. (9.5-mm) nominal
49、wall thickness in the followingservices shall be 100 % radiographically examined in accor-dance with UW-51 of the ASME Code.Service Pressure, psig (MPa) Temperature, F (C)Liquefied flammable gas above 150 (1.03).and.above 0 (18)Fuels above 150 (1.03).or.above 150 (66)Liquids with a flash pointA150F (66C) or belowabove 225 (1.55).or.above 150 (66)Liquids with a flash point above150F (66C)Babove 225 (1.55).or.above 400 (204)Steam, gases, and vapors above 150 (1.03).or.above 650 (343)Water above 225 (1.55).or.above 350 (177)AFlash point measured in a
