ASTM_F_994_-_86_2011.pdf

Designation:F99486(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 originaladoption or,in the case of revision,the year 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 carbon steel overboard dis-charge hull penetrations for system piping of NPS 1 throughNPS 24(see Note 1).NOTE1The 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 presented 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 for 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 Engineering4Department 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-reinforced 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 plates.(Fig.4)3.3.2 Class 2Double-bevel insert plates.(Fig.5)3.4 Type IVSleeve-reinforced penetrations.Fig.6 detailssleeve-reinforced penetrations.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.Table5 provides minimum dimensions for machined sleeves.3.4.3 Class 3Sleeves of rolled steel flatbar or plate.Table6 provides minimum dimensions 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 the penetra-tion pipe size: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 previous 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 ASTM 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,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/dodssp.daps.dla.mil.5Available 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Penetration Pipe SizeSleeve MaterialNPS 1 through NPS 10Seamless Steel Tubing,SpecificationA519.NPS 12 through NPS 18Machined seamless steel pipe of samematerial as penetration pipe.NPS 20 through NPS 24Steel flatbar or plate of same orsuperior material as hull plate,manufactured with a full pene-tration,longitudinal butt weld.5.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 penetrations and shell plate welding seams.Penetra-tions shall be located so as to provide sufficient space forwelding between the penetration and shell longitudinals,stiffeners,or other structural members.5.3 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 vessel or would create anuisance for personnel or oth