ASTM_F_1338_-_91_2013.pdf

Designation:F133891(Reapproved 2013)An American National StandardStandard Guide forMain Propulsion Medium Speed Marine Diesel EnginesCovering Performance and Minimum Scope of Assembly1This standard is issued under the fixed designation F1338;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 guide covers performance and minimum scope ofassembly of all medium speed marine diesel engines intendedfor main propulsion of single or multiple screw propelledmarine vessels or for vessels using other than screw propeller-type main propulsion.1.2 This guide is intended to supplement the regulations oflegally constituted regulating authorities.In the event of anyconflict,which may become apparent after publication of thisguide,with such legally constituted regulations,the latter shalltake precedence,as may be applicable within the jurisdiction ofsuch authorities and specific to each case,unless such latterregulations are formally waived by proper cognizant authority.1.3 This guide is not intended to relieve the purchaser of theobligation fully to advise the engine builder of all of thepurchasers unique operational considerations to allow thoseconsiderations to be satisfied.2.Referenced Documents2.1 ABS Standard:2Rules for Building and Classing Steel Vessels2.2 IEEE Standard:3Standard No.45,Recommended Practice for Electrical In-stallations on Shipboard2.3 ISO Standard:4ISO 3046/1 Reciprocating Internal Combustion EnginesPerformance2.4 Code of Federal Regulations:5United States Coast Guard Regulations as Published in Codeof Federal Regulations No.46(CFR 46)3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 diesel enginea reciprocating or rotary engine inwhich ignition of the main fuel charge,as it is introduced to thecombustion chamber,shall be by the heat of compression of thecharge of combustion air,during regular operation of theengine from idle speeds up to full speed,regardless of whethermiscellaneous methods to augment such heat of compressionare used to facilitate starting of the engine under normalconditions or under low ambient temperature conditions or lowintake air temperature conditions.Engines that are designed tooperate with a continuously hot spot or bulb or other device tofacilitate ignition or combustion,or both,of low cetane fuels,or any fuels slow to ignite or to burn,or both,shall beconsidered to be diesel engines for purposes of this guide.3.1.2 engine assemblycontains,but is not necessarilylimited to,that apparatus secured to or applied to a basicengine,which is needed to make the basic engine operable andcapable of developing its rated power as indicated or to beindicated on the engine nameplate.3.1.3 fuel mapa chart on which there is displayed a familyof curves of various constant rates of specific fuelconsumption,each curve of the family being plotted on a grid,the abscissa of which is engine r/min and the ordinate of whichis brake horse power or brake mean effective pressure.3.1.4 medium speed diesel engineall diesel engines withcrank-shaft rotative speeds encompassed by the maximumcontinuous speed bracket of 400 to 600 r/min(see AppendixX1).1This guide is under the jurisdiction of ASTM Committee F25 on Ships andMarine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved Oct.1,2013.Published October 2013.Originallyapproved in 1991.Last previous edition approved in 2007 as F1338-91(2007).DOI:10.1520/F1338-91R13.2Available from American Bureau of Shipping(ABS),ABS Plaza,16855Northchase Dr.,Houston,TX 77060,http:/www.eagle.org.3Available from Institute of Electrical and Electronics Engineers,Inc.(IEEE),445 Hoes Ln.,P.O.Box 1331,Piscataway,NJ 08854-1331,http:/www.ieee.org.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.5Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Significance and Use4.1 Comparison of brake horsepower developed and ofspecific fuel consumption rates from engine to engine may bemade by use of data based upon a standard for composition ofan engine assembly.4.2 The purchaser of the engine assembly will be fullyadvised of the minimum scope of assembly which the pur-chaser may rightfully expect to be encompassed by a responseto a request for quotation and to be delivered in response to apurchase order unless the engine builder in the proposal or inthe offer to sell has clearly advised otherwise.4.3 It will be made apparent to the purchaser that additionalauxi