1、Designation: F994 86 (Reapproved 2011)An American National StandardStandard Specification forDesign and Installation of Overboard Discharge HullPenetration Connections1This standard is issued under the fixed designation F994; the number immediately following the designation indicates the year of ori
2、ginaladoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers carbon steel overboard dis-charge hul
3、l penetrations for system piping of NPS 1 throughNPS 24 (see Note 1).NOTE 1The dimensionless designator NPS (nominal pipe size) hasbeen substituted in this standard for such TRADITIONAL terms asnominal diameter, size, and nominal size.1.2 The minimum pipe schedule and reinforcement dimen-sions prese
4、nted in Tables 1-6 are based on specifications in 46CFR, 56.50-95 and Navy Design Data Sheet 100-1.1.3 This specification does not include sea chest penetra-tions.1.4 This specification does not include penetrations inprotective plating.2. Referenced Documents2.1 ASTM Standards:2A519 Specification f
5、or Seamless Carbon and Alloy SteelMechanical Tubing2.2 ANSI Standard:B36.10 Welded and Seamless Wrought Steel Pipe32.3 Military Document:MIL-STD-1689 Fabrication, Welding, and Inspection ofShips Structure42.4 Other Documents:Title 46 Code of Federal Regulations (CFR), Subchapter F,Marine Engineering
6、4Department of the Navy, Bureau of Ship Design Data Sheet100-15ABS Rules for Building and Classing Steel Vessels63. Classification3.1 Type INonreinforced penetrations. Table 1 providesminimum schedules for the penetration pipe. See Fig. 1 fordetails of the penetration.3.2 Type IIDoubler plate-reinfo
7、rced penetrations. Table 2provides minimum dimensions for doubler plates.3.2.1 Class 1Inboard doubler plates. (Fig. 2)3.2.2 Class 2Outboard doubler plates. (Fig. 3)3.3 Type IIIInsert plate-reinforced penetrations. Table 3provides minimum dimensions for insert plates.3.3.1 Class 1Single-bevel insert
8、plates. (Fig. 4)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 April 1, 2011. Published April 2011. Originallyapproved in 1986. Last prev
9、ious edition approved in 2006 as F994 86 (2006).DOI: 10.1520/F0994-86R11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe A
10、STM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/dodssp.daps.dla.mil.5Availa
11、ble from Department of the Navy, Naval Sea Systems Command,Washington, DC 20362.6Available from American Bureau of Shipping (ABS), ABS Plaza, 16855Northchase Dr., Houston, TX 77060, http:/www.eagle.org.TABLE 1 Pipe Schedule for Type 1 Penetrations, NPS 1 ThroughNPS 24APene-trationPipe Size,NPSShell
12、Plating Thickness (T), in.583478 1118 1 138 11 80 80 160 160 160 160 XXS XXS XXS1 80 160 160 160 XXS XXS XXS XXS XXS1 80 160 160 160 160 XXS XXS XXS XXS2 80 160 160 160 160 160 160 XXS XXS2 80 80 160 160 160 160 160 XXS XXS3 80 80 160 160 160 160 160 160 XXS4 80 80 120 120 120 120 160 160 1605 80 80
13、 80 120 120 120 120 160 1606 80 80 80 120 120 120 120 120 1608 80 80 80 80 100 100 100 120 12010 60 60 60 80 80 100 100 100 12012 60 60 60 80 80 80 100 100 10014 60 60 60 80 80 80 80 100 10016 40 60 60 60 80 80 80 80 10018 40 40 60 60 60 80 80 80 8020 40 40 60 60 60 60 80 80 8022 40 40 60 60 60 60 8
14、0 80 8024 40 40 60 60 60 60 60 60 80ASee Fig. 1.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.3.2 Class 2Double-bevel insert plates. (Fig. 5)3.4 Type IVSleeve-reinforced penetrations. Fig. 6 detailssleeve-reinforced penetrations.
15、3.4.1 Class 1Sleeves of nonmachined steel tube. Table 4provides minimum dimensions for nonmachined sleeves.3.4.2 Class 2Sleeves of machined steel tube or pipe.Table 5 provides minimum dimensions for machined sleeves.3.4.3 Class 3Sleeves of rolled steel flatbar or plate. Table6 provides minimum dimen
16、sions for rolled sleeves.4. Materials4.1 Discharge pipe shall be of an acceptable material asspecified by Title 46 CFR, 56.60-1.4.2 Doubler and insert plates shall be of material withphysical properties equal to or better than the reinforced shellplate.4.3 Reinforcing sleeve material shall depend on
17、 the penetra-tion pipe size:Penetration Pipe Size Sleeve MaterialNPS 1 through NPS 10 Seamless Steel Tubing, SpecificationA519.NPS 12 through NPS 18 Machined seamless steel pipe of samematerial as penetration pipe.NPS 20 through NPS 24 Steel flatbar or plate of same orsuperior material as hull plate
18、,manufactured with a full pene-tration, longitudinal butt weld.5. General Requirements General Requirements5.1 Overboard discharges shall be combined to the maxi-mum extent practicable to minimize the number of shellpenetrations.5.2 A minimum of 3 in. shall be maintained between theedge of penetrati
19、ons and shell plate welding seams. Penetra-tions shall be located so as to provide sufficient space forwelding between the penetration and shell longitudinals, stiff-eners, or other structural members.TABLE 2 Doubler Plate Dimensions (TD3 D) Type II Penetration, NPS 1 Through NPS 24 (in. 3 in.)APene
20、tratingPipe Size,NPS, SCHShell Plating Thickness (T), in.to583478 1118 1 138 11, 80 3 538 3 53 558 3 534 3 534 3 513 513 513 51, 80 3 638 3 63 658 3 634 3 634 3 613 613 613 61, 80 3 638 3 3 658 3 634 3 634 3 3 3 3 62, 80 3 738 3 73 758 3 734 3 734 3 713 713 713 72, 80 3 738 3 3 758 3 734 3 734 3 3 3
21、 3 73, 80 3 838 3 83 858 3 834 3 834 3 813 813 813 84, 80 3 938 3 93 958 3 934 3 934 3 913 913 913 95, 80 3 1038 3 10 3 1058 3 1034 3 1034 3 10 1 3 10 1 3 10 1 3 106, 80 3 1238 3 12 3 1258 3 1234 3 1234 3 12 1 3 12 1 3 12 1 3 128, 80 3 1438 3 14 3 1458 3 1434 3 1434 3 14 1 3 14 1 3 14 1 3 1410, 60 3
22、 1638 3 16 3 1658 3 1634 3 1634 3 16 1 3 16 1 3 16 1 3 1612, 60 3 1838 3 18 3 1858 3 1834 3 1834 3 18 1 3 18 1 3 18 1 3 1814, 60 3 2038 3 20 3 2058 3 2034 3 2034 3 20 1 3 20 1 3 20 1 3 2016, 40 3 2238 3 22 3 2258 3 2234 3 2234 3 23 1 3 22 1 3 23 1 3 2418, 40 3 2438 3 24 3 2458 3 2434 3 2434 3 25 1 3
23、 24 1 3 25 1 3 2820, 40 3 2638 3 26 3 2658 3 2634 3 2634 3 27 1 3 26 1 3 27 1 3 3022, 60 3 2838 3 28 3 2858 3 2834 3 2834 3 29 1 3 28 1 3 29 1 3 3224, 40 3 3038 3 30 3 3058 3 3034 3 3034 3 31 1 3 30 1 3 31 1 3 33ASee Fig. 2 and Fig. 3.TABLE 3 Insert Plate Dimensions (TI3 D), NPS 1 Through NPS 24 (in
24、. 3 in.)APenetratingPipe Size,NPS, SCHShell Plating Thickness (T), in.to583478 1118 1 138 11, 80 1 3 8118 3 8 1 3 8 138 3 834 1 3 9158 3 9 134 3 9 178 3 934 2 3 101, 80 1 3 8 118 3 8 1 3 834 138 3 913 9 158 3 9 134 3 10 178 3 10 2 3 101, 80 1 3 834 118 3 834 1 3 9138 3 9 1 3 9 158 3 10 134 3 10 178
25、3 10 2 3 10342, 80 1 3 9118 3 9 1 3 9 138 3 934 1 3 10 158 3 10 134 3 10 178 3 11 2 3 112, 80 1 3 10 118 3 10 1 3 10 138 3 10 1 3 10 158 3 1034 134 3 11 178 3 11 2 3 113, 80 1 3 10 118 3 1034 1 3 1034 138 3 11 1 3 11 158 3 11 134 3 1134 178 3 12 2 3 124, 80 1 3 11 118 3 11 1 3 1134 138 3 12 1 3 12 1
26、58 3 12 134 3 1234 178 3 13 2 3 135, 80 1 3 12 118 3 12 1 3 13 138 3 13 1 3 13 158 3 13 134 3 1334 178 3 14 218 3 156, 80 1 3 13 118 3 13 1 3 14 138 3 14 1 3 14 158 3 14 134 3 1434 178 3 15 218 3 168, 80 1 3 14 118 3 14 1 3 15 138 3 16 1 3 16 158 3 16 134 3 17 2 3 18 2 3 1910, 60 1 3 16 118 3 17 1 3
27、 18 138 3 18 1 3 18 158 3 1834 2 3 2034 238 3 2234 2 3 2312, 60 1 3 18 118 3 18 1 3 19 138 3 20 1 3 20 158 3 2034 2 3 2234 238 3 2434 2 3 2514, 60 1 3 21 118 3 21 1 3 21 138 3 21 1 3 2134 158 3 22 2 3 24 238 3 26 258 3 253416, 40 1 3 23 118 3 23 1 3 23 138 3 24 134 3 26 218 3 27 238 3 28 258 3 2934
28、278 3 3118, 40 1 3 25 118 3 25 1 3 25 138 3 25 134 3 27 218 3 29 238 3 30 258 3 3134 278 3 3320, 40 1 3 27 118 3 27 1 3 27 138 3 28 178 3 30 218 3 31 238 3 32 258 3 3334 278 3 3522, 60 1 3 29 118 3 29 1 3 29 138 3 30 178 3 30 218 3 30 238 3 33 258 3 34 278 3 3624, 40 1 3 31 118 3 31 1 3 31 138 3 31
29、178 3 34 218 3 35 238 3 36 258 3 38 278 3 39ASee Fig. 4 and Fig. 5.F994 86 (2011)25.3 Shell penetrations located above the light load line shallbe clear of side ports, accommodation ladders, lifeboat-handling areas, or other areas where discharge overboard isdetrimental to normal operation of the ve
30、ssel or would create anuisance for personnel or other vessels in the area.5.4 Overboard discharges shall be located to minimizerecirculation into suction seachests.5.5 Shell penetrations shall be located outside of cathodicprotection areas.5.6 Unfavorable flow characteristics may result when smalldi
31、ameter, extreme schedule penetration pipe is used in accor-dance with Table 1. In this case, minimum allowable schedulepenetration pipe, with necessary reinforcement as specified inTables 2-6, is suggested.5.7 Penetration pipe extension past the shell plate shall beequal to the pipe wall thickness b
32、ut not more than38 in.6. Welding6.1 Welding shall be in accordance with Figs. 1-6 (see alsoANSI B36.10).6.2 Weld quality shall be in accordance with AmericanBureau of Shipping standards.6.3 Fillet welds shall be equal to the penetration pipe wallthickness but not more than38 in.TABLE 4 Reinforcing S
33、leeve Dimensions, NPS 1 Through NPS 5 (Seamless Steel Tubing)APenetrationPipe Size,NPS, SCHSleeve Size, in. Shell Plating Thickness (T), in.14 12583478 1118 114 138 1121, 80 outer diameterwall thicknesslength17814134178141781781422183821821838214218382382183821221838258218383114 , 80 outer diameterw
34、all thicknesslength2149321342149321782149322214932218358214358238358212358258358234112 , 80 outer diameterwall thicknesslength212932134212932178212932231221831221431223831221231223431232, 80 outer diameterwall thicknesslength318516134318516178318516214318516212434214434238434212434258434234212 , 80
35、outer diameterwall thicknesslength412134412178412241221841221241223441234123124123583, 80 outer diameterwall thicknesslength41271613441271617841271621441271623441271634127163384581231245812334458124184, 80 outer diameterwall thicknesslength614131613461413161786141316261413162186141316212614131623461
36、413163614131631461413163125, 80 outer diameterwall thicknesslength658122758127581275812187581212813162128581122128581122348581123ASee Fig. 6.TABLE 5 Reinforcing Sleeve Dimensions, NPS 6 Through NPS 12 (Machined Seamless Steel Tube)APenetrationPipe Size,NPS, SCHSleeve Size, in. Shell Plating Thicknes
37、s (T), in.583478 1118 1 138 16, 80 tube outer diameter 8 8 8 8 9 9 9 9 10machined inner diameter 634 634 634 634 634 634 634 634 634length 134 2222234 234 338, 80 tube outer diameter 10 10 10 10 11 11 11 11 12machined inner diameter 834 834 834 834 834 834 834 834 834length 2 234 234 3 3 3 3 3 310,
38、60 tube outer diameter 12 12 12 1234 1338 1338 1338 14 14machined inner diameter 1078 1078 1078 1078 1078 1078 1078 1078 1078length 234 3 3 3 3 3 334 334 412, 60 tube outer diameter 14 1438 1438 15 15 16 16 16 16machined inner diameter 1278 1278 1278 1278 1278 1278 1278 1278 1278length 3 3 3 3 334 3
39、 3 334 4ASee Fig. 6.F994 86 (2011)36.4 Weld quality for military vessels shall be in accordancewith MIL-STD-1689.7. Workmanship, Finish, and Appearance7.1 Surface areas, corners, and discharge pipe ends shall befree of burrs and sharp edges.8. Keywords8.1 discharge hull penetration; hull penetration
40、; marinetechnology; penetration connection; ships; system pipingTABLE 6 Reinforcing Sleeve Dimensions, NPS 14 Through NPS 24 (Rolled Steel Flatbar or Plate)APenetrationPipe Size,NPS, SCHSleeve Size, in. Shell Plating Thickness (T), in.14 12583478 1118 114 138 11214, 60 inner diameterwall thicknessle
41、ngth1431634214316343181431634334143161334143161414316114414316114414143161124141431611241216, 40 inner diameterwall thicknesslength16316342341631634312163163441816316141816316141216316114412163161144341631611243416316112518, 40 inner diameterwall thicknesslength18316343183163433418316344121831614121
42、83161434183161144341831611451831611251831611251420, 40 inner diameterwall thicknesslength2031634312203163442031634520316152031615142031611451420316114514203161125142031611251222, 60 inner diameterwall thicknesslength223163431222316344122231634514223161514223161512223161145122231611453422316112534223
43、16112624, 40 inner diameterwall thicknesslength2431634334243163443424316345122431615122431615342431611453424316114624316112624316112614ASee Fig. 6.FIG. 1 Type I: PenetrationFIG. 2 Type II, Class 1 Penetration: Inboard Doubler PlateF994 86 (2011)4FIG. 3 Type II, Class 2 Penetration: Outboard Doubler
44、PlateFIG. 4 Type III, Class 1 Penetration: Single-Bevel Insert PlateF994 86 (2011)5ASTM International takes no position respecting the 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
45、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 technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your
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47、ave 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 Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard
