1、Designation: F 1431 92 (Reapproved 2004)An American National StandardStandard Specification forWater Trap for Diesel Exhaust1This standard is issued under the fixed designation F 1431; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision
2、, 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 the material, dimensions, andconstruction of diesel exhaust water traps, whic
3、h shall berequired whenever the exhaust is to be expelled through thehull of the vessel.1.2 The traps are designed to prevent sea backwash fromentering the diesel exhaust system.1.3 The values stated in SI (metric) units shall be regardedas the standard. The values given in parentheses are forinform
4、ation only.2. Referenced Documents2.1 ASTM Standards:2B 443 Specification for Nickel-Chromium-Molybdenum-Columbium Alloy (UNS N06625) and Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219) Plate, Sheet,and StripF 104 Classification System for Nonmetallic Gasket Mate-rials2.2 Military Standard:3MI
5、L-S-901 Requirements for Shock Tests, High Impact,Shipboard Machinery, Equipment and Systems2.3 Other Documents:American Bureau of Shipping Rules for Building andClassing Steel Vessels4American Welding Society Publication AWS D1.1 Struc-tural Welding Code53. Ordering Information3.1 Water traps order
6、ed under this specification shall in-clude the following information:3.1.1 ASTM designation, title and date of this specification,3.1.2 Quantity,3.1.3 Size,3.1.4 Shock test and grade (see Supplementary RequirementS1),3.1.5 Handhole shall be at 45 unless otherwise specified,and3.1.6 Flange dimensions
7、 shall be indicated for gaskets.4. Materials and Manufacture4.1 Materials:4.1.1 The tank and baffles shall be of nickel-chromium-molybdenum-columbium alloy and tested in accordance withSpecification B 443.4.1.2 GasketsGaskets shall be ASTM Classification F 104(F712100A9B4E22K5M6) and shall withstand
8、 temperaturesof 650C (1200F).4.2 Manufacture:4.2.1 Construction of the water traps shall be in accordancewith this specification and Fig. 1.4.2.2 Welding shall be in accordance with the AmericanBureau of Shipping Rules for Building and Classing SteelVessels or the American Welding Society Publicatio
9、n AWSD1.1.5. Requirements5.1 Water traps for diesel exhaust systems shall be designedfor maximum temperatures of 650C (1200F).5.2 Baffles:5.2.1 No less than three baffles shall be installed. Thebottom baffle shall not extend below the top of the outlet pipe,as shown in Fig. 1.5.2.2 The inlet may be
10、rotated about the centerline of thetrap to suit the installations. The top baffle shall also be rotatedto retain the same relation with the inlet as shown in Fig. 1.5.3 Trap Size:5.3.1 The trap size shall be a minimum of1m(3ft)high.5.3.2 The diameter shall equal twice the diameter of theinlet exhaus
11、t line.5.3.3 The minimum free area through the trap shall equaltwice the area of the outlet exhaust line.5.4 Hand HoleThe hand hole shall be configured asindicated in Fig. 1.1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibi
12、lity of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved Nov. 1, 2004. Published November 2004. Originallyapproved in 1992. Last previous edition approved in 1998 as F 1431 92 (1998).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Custo
13、mer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.4Available from Amer
14、ican Bureau of Shipping (ABS), ABS Plaza, 16855Northchase Dr., Houston, TX 77060.5Available from The American Welding Society (AWS), 550 NW LeJeune Rd.,Miami, FL 33126.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. Dimensions6.1
15、The dimensions in Fig. 1 are recommended nominaldimensions.7. Workmanship, Finish, and Appearance7.1 Workmanship on traps and piping shall be of sufficientquality to prevent dirt accumulation. Welding shall have small,even beading, free of slag and spatter.7.2 The trap shall be free of paint.8. Test
16、 Method8.1 Each trap shall be pneumatically proof tested 35 kPa (5psi) with no visible seam leakage.9. Packaging9.1 The water traps shall be crated or packaged individuallyfor shipment by a commercial common carrier.9.1.1 Talc and talcum used in the packaging process ofitems shall be free of asbesto
17、s and asbestiform-like materials.10. Marking10.1 Each water trap shall bear a weathertight tag showingthe purchase order number, ASTM designation, size, and nameof manufacturer. The markings on the package shall beapproximately 25.4 mm (1 in.) high.11. Quality Assurance Provisions11.1 Source Inspect
18、ionThe purchaser reserves the right toinspect the manufacturing process and end product in thesuppliers plant.12. Keywords12.1 diesel exhaust systems; piping systemsFIG. 1 Water Trap for Diesel ExhaustF 1431 92 (2004)2SUPPLEMENTARY REQUIREMENTSThe following supplementary requirements shall apply onl
19、y when specified by the purchaser in thecontract order.S1. Provisions to withstand high shock. The grade will bespecified by the navy requirements.S1.1 When specified, the diesel exhaust water trap shallmeet the requirements set forth in MIL-S-901.ASTM International takes no position respecting the
20、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 infringement of such rights, are entirely their own responsibility.This standard is
21、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 standard or for additional standardsand should be addressed to ASTM International Head
22、quarters. 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 views known to the ASTM Committee on Standards, at the address shown below.This sta
23、ndard 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 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).F 1431 92 (2004)3
