ASTM_F_1099M_-_98_2011.pdf

Designation:F1099M98(Reapproved 2011)An American National StandardStandard Specification forRat Guards,Ships(Metric)1This standard is issued under the fixed designation F1099M;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the materials,dimensions,andassembly of steel and aluminum rat guards.1.2 Rat guards are intended to prevent rats from boardingships by way of mooring lines.1.3 The values stated in SI units are to be regarded as thestandard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A525M Specification for General Requirements for SteelSheet,Zinc-Coated(Galvanized)by the Hot-Dip Process(Withdrawn 1994)3B209M Specification for Aluminum and Aluminum-AlloySheet and Plate(Metric)3.Classification3.1 Rat guards shall be classified into three types as follows:3.1.1 Type IMultiple-line(doubling up),self-adjustable,accommodating the mooring line combinations listed in Table1.3.1.2 Type IISingle-line,self-adjustable,accommodatinga single 5-mm wire to a 76-mm-diameter mooring line.3.1.3 Type IIIConical shape with tapered,slotted sleeve.Type III rat guards shall be of the following sizes:(a)75 mm,(b)125 mm,and(c)200 mm.3.2 Types I and II rat guards(see 3.1.1 and 3.1.2)aredesigned to be installed from the deck or pier without a personphysically coming in contact with the mooring lines or hawser,by lowering and positioning the guards away from the shipshull with two ropes that are permanently attached as guide andtie ropes(see Fig.1).3.3 Type III rat guards(see 3.1.3)require a person to contactthe mooring line to pull the two halves of the conical guardaround the mooring line,wrap the slotted sleeves(see Fig.2)to the line,and physically close any opening between themooring line and the circular opening at the center of theguard.4.Ordering Information4.1 Orders for rat guards under this specification shallinclude the following information:4.1.1 ASTM designation.4.1.2 Type required(see 3.1):4.1.2.1 If Type III,material required(see 5.1.3).4.1.2.2 If Type III,size required(see 3.1.3).4.1.3 Quantity required.4.1.4 Optional requirements,if any(see SupplementaryRequirements S1 through S3).5.Materials and Manufacture5.1 Materials:5.1.1 Type I rat guards shall be made of aluminum-alloysheet metal conforming to the requirements of SpecificationB209M,6061-T6,or 5052-H32.5.1.2 Type II rat guards shall be made of galvanized sheetsteel conforming to the requirements of Specification A525M,Coating Designation 450.The coating shall be a minimum of450 g/m2in accordance with the triple-spot test of Specifica-tion A525M.5.1.3 Type III rat guards shall be made of either of thematerials specified in 5.1.1 and 5.1.2(see 4.1.2.1).5.2 Manufacture:5.2.1 Types I and II rat guards shall be provided with thefollowing:5.2.1.1 Hinge BoltAn M 7 1 hexagon head bolt 20 mmlong with elastic stop nut and washer.All parts shall becorrosion-resistant steel.1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.07 onGeneral Requirements.Current edition approved May 1,2011.Published May 2011.Originallyapproved in 1987.Last previous edition approved in 2005 as F1099M 98(2005).DOI:10.1520/F1099M-98R11.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.2.1.2 Guide and Tie RopePolyester or nylon of goodcommercial quality,6-or 9-mm diameter by 6 m long.5.2.1.3 GrommetGood commercial quality brass and ofsize suitable for the guide and tie ropes.5.2.2 Type III Rat GuardsType III rat guards shall consistof two half disks and two half tapered sleeves.Both halvesshall be identical except one half shall be provided with a“U”shaped sleeve.5.2.2.1 The hinge bolt provided with each rat guard shallconsist of a commercial M 7 1 hexagon head bolt,20-mm-long nut,and washer.All parts shall be corrosion-resistantsteel.5.2.2.2 The galvanized steel or aluminum sleeve shall beslotted as specified in Table 2 and Fig.2,so that when the ratguard is in place,it may be drawn tightly against the hawser,TABLE 1 Mooring Line Combinations for Type I Rat GuardsMooring L