ANSI ASTM F986-1986 Standard Specification for Suction Strainer Boxes.pdf

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1、Designation: F986 86 (Reapproved 2014) An American National StandardStandard Specification forSuction Strainer Boxes1This standard is issued under the fixed designation F986; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year

2、 of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the design, materials, andconstruction of strainer boxes for use in ships bilges and othersu

3、ch tank locations that require trash protection for suctionpipes and pumps.1.2 This specification covers pipe sizes from NPS 112through NPS 16 (see Note 1).NOTE 1The dimensionless designator NPS (nominal pipe size) hasbeen substituted in this specification for such traditional terms as “nominaldiame

4、ter,” “size,” and “nominal size.”1.3 The values stated in inch-pound units are to be regardedas the standard.2. Referenced Documents2.1 ASTM Standards:2A36/A36M Specification for Carbon Structural SteelA123/A123M Specification for Zinc (Hot-Dip Galvanized)Coatings on Iron and Steel ProductsF593 Spec

5、ification for Stainless Steel Bolts, Hex CapScrews, and StudsF594 Specification for Stainless Steel NutsF708 Practice for Design and Installation of Rigid PipeHangers2.2 AWS Standard:3AWS D1.3 Structural Welding CodeSheet Steel3. Classification3.1 This specification covers two types of strainer boxe

6、s.3.1.1 Type 1Strainer boxes with pipe clamp centered onthe top of the strainer box (see Fig. 1).3.1.2 Type 2Strainer boxes with the pipe clamp off centerin the top of the strainer box (see Fig. 2).4. Ordering Information4.1 Ordering information required is as follows.4.1.1 ASTM specification and ye

7、ar of issue.4.1.2 Type.4.1.3 Size (suction pipe NPS).4.1.4 Dimensions G and H (Type 2 only).4.1.5 Number of each type and size.5. Materials and Manufacture5.1 For information on materials, see Table 1.5.2 Welding shall be in accordance with AWS D1.3.5.3 Perforated sheet metal shall have38-in. diamet

8、er holeson staggered12-in. centers, 51 % open area.6. Dimensions and Tolerances6.1 Tolerance6116 in.6.2 Strainer Box Dimensions:6.2.1 Type 1See Table 2.6.2.2 Type 2See Table 3.7. Workmanship, Finish, and Appearance7.1 Strainer boxes shall be hot galvanized in accordancewith Specification A123/A123M

9、after fabrication. The galva-nizing shall be a minimum of 2 mils thick.7.2 Strainer boxes shall be free of defects, burrs, and sharpedges.8. Installation8.1 Strainer boxes are normally installed on suction pipes inballast and bilge spaces.8.2 Minimum suction pipe or tank bottom clearances areindicat

10、ed in Column “F” in Table 2 and Table 3. Dimensioncallout is based on12 the tailpipe nominal pipe size.8.3 Tank structure and sloping bottom structure may ob-scure the above clearance down to the limit of the resultingperiphery clear area, being 1.5 the inside diameter of thetailpipe. Structure outs

11、ide the limit of12 the pipe NPS need notbe considered as obstructing flow.1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved Aug. 1, 2014. Pu

12、blished September 2014. Originallyapproved in 1986. Last previous edition approved in 2008 as F986 86 (2008).DOI: 10.1520/F0986-86R14.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume info

13、rmation, refer to the standards Document Summary page onthe ASTM website.3Available from American Welding Society (AWS), 550 NW LeJeune Rd.,Miami, FL 33126, http:/www.aws.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1NOTE 1Tab l

14、ocation to suit perforated holes.FIG. 1 Type 1Elevation Strainer BoxF986 86 (2014)2FIG. 2 Type 2Elevation Rectangular StrainerTABLE 1 Parts ListItem Number Description1 SideSheet metal, 11 gage, perforated38-in.diameter holes staggered on12-in. centers, carbonsteel, Specification A36/A36M.2 TopSheet

15、 metal, 11 gage, perforated38-in. diam-eter holes staggered on12-in. centers, carbon steel,Specification A36/A36M.3 TabFlatbar,14 in. thick by 1 in. wide by 2 in. long,carbon steel, Specification A36/A36M or ABSGrade A.4 ScrewTapping, plain hexagon washer head14nominal size by34 in. long, Type 316 s

16、tainlesssteel, Specification F593.5 ClampSplit cap, Practice F708 Fig. 1a, withoutstandoff.6 BoltHexagon head, stainless steel, Type 316Specification F593. Size in accordance withPractice F708.7 NutHexagon heavy, stainless steel, Type 316Specification F594. Size in accordance withPractice F708.F986

17、86 (2014)3TABLE 2 Type 1 Strainer DimensionsFlat Surface InstallationABC D EFASuctionPipeNPSStrainerSideWidth,in.StrainerLength,in.StrainerHeight,in.HoleDiameter,in.TabLocation,in.PipeClearance,in.Weight,lb112 88611516 334 7.32716 317.5212151614 8.4314146 391612 14.341 4916 3 2 14.952020 558 3212 22

18、.862 661116 3 3 25.5826 681116 4 4 40.210 32 32 10 101316 5 5 61.312 38 38 12 121316 6 6 83.414 42 42 14 14116 4 and 10 7 106.216 48 48 16 16116 5 and 11 8 134.8ASee 8.2 and 8.3 of this specification.TABLE 3 Type 2 Strainer DimensionsAABAC DEFGBHSuctionPipe(NPS)Width,min,in.Length,min,in.Perimeter,m

19、in, in.AHeight,in.HoleDiameter,in.TabLocation,in.PipeClearance,in.SideWidth,min, in.SideLength,min, in.112 278 434 20 6 11516 334 1716 2382338 618 25 6 2716 311116 3116212 378 678 31 6 2151614 11516 37163438 734 38 6 391612 2316 3784538 938 49 6 4916 321116 411165612 101516 62 6 55812 314 5126 8 12

20、74 6 61116 33 68101412 99 8 81116 44571410 1214 1658 123 10 101316 55618 851612 1414 1938 147 12 121316 66718 9111614 1538 2058 162 14 14116 4 and 10 7 71116 1051616 1738 22# 184 16 16116 5 and 11 8 81116 11516AMinimum dimensions A and B are independent of one another and relate only to required cle

21、arances for the clamp assembly and suction requirements. The totalminimum perimeter for the box is shown in the undesignated fourth column.BSee 8.2 and 8.3 of this specification.F986 86 (2014)4ASTM International takes no position respecting the validity of any patent rights asserted in connection wi

22、th 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 infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible tech

23、nical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful considerat

24、ion 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 views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Ha

25、rbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting 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:/ 86 (2014)5