I INCH-POUND I MIL-S-901D(NAVY) SUPERSEDING MIL-S …

1 IINCH-POUNDIMIL-S-901D(NAVY)17 March1989 SUPERSEDINGMIL-S-901C(IUAVY)15 January1963( )MILITARYSPECIFICATIONSHOCKTESTS, (HIGH-IMPACT)SHIPBOARDMACHINERY,EQUIPMEN T,ANDSYSTEMS,REQUIRE~~SFORT hisspecificationisapprovedforusebytheDep artmentoftheNavy, ,equipment,SysteM,lndstructures,excludin gsubmarinepressurehulipenetrations,( ). , ,asspecified(see3, ):Beneficialcomments(recommendations,add itions,deletions) :Commander,NavalSeaSyutomsCommand,SEA552 3,DepartmentoftheNavy, (DDForm1426) ; (klAvY) (8e*figurel).Medium-weiflh~,Themediumwei ghttestisateatperformedonthemediumweight shockmachine(seefigure2). (8eefigures3and4).

2 ,asspecified( ):Grade~. ,togradeAitems, ~l8specified( ) *hats# ( (:)), ~~. ( ! ):TypeA% ,anditems2 MIL-S -901D(NAVY)mountedinpipingsystems,d uctingsystems, ,theshipboardmountinglocation, ,airconditioningplants,switchboards,radi otransmitters,steamgenerator,missilelaun chers,andvalves(ifinstalledinpipingwhich ifJsupportedbyshipstructure)..$ #hip,lsspecified( ):BaseFrontorfaceBackTopCombination.(suc hlsbaseandback)Other., ~.Iterasshsllbeclassifiedinaccordancewit honeofthefollowingintendedorientationabo ardship,asspecified( ):UnrestrictedlstoorientationaboardshipR estrictedShaft,front,face,principalaxis, lndsoforth,paralleltofore-and-aftaxiaofa hlpShaft,front,faue,principalmxis,lndsof orth,perpendiculartofore-tnd-~ ( (NAVY) ~.)

3 (DoDISS)andsupplementthereto,citedinthes olicitation( ).SPECIFICATIONSMILITARYMXL-S-1222-Studs ,Bolts,HexCapScrews, , , ,Renili*nt;OenoralSpecificationsandTestn for(ShipboardApplication)MIL-W-21157-Wel dment,Steel,CarbonandLowAlloy(YieldStren gth30,000-60,000 PSI).MIL-E-22200/l-Electrodes,Welding,Mi neralCove~ed,Iron-Powdor,Low-Hydrogen,Me diumandHighTensileSteel, MILITARYFED-STD-H28 MIL-STD-22 MIL-STD-298(Unlessotherwiseindicated, ,Welding,QualityControl, ,standards,lndhandbookslreavailablefromt heNavalPublicationsandFormsCenter,(ATTN: NPODS),5801 TaborAvenue,Philadelphia,PA19120-5099,)5 MIL-S -901D(NAVY) ~ , , ,Medi~ ,GeneralArrangementandDetails.

4 (ApplicationforcopiesofNAVSEA drawingsshouldbelddressedto:CommandingOf ficer,NavalOrdnanceStation,(Attn:Code802 ),Louisville,KY40214.) ~ , ,theIssucaofdocumentsnotlistedintheDoDIS S aretheissuesofthedocumentscitedinthesoli citation( ).AMERICANNATIONALSTANDARDSINSTITUTE(ANS I) (SurfaceRoughness,WavinessandLay).(DoDad opted) (DoDadopted) (DoDadopted)(Applicationforcopiesshouldb eaddressedtotheAmericanNationalStandards Institute,Inc.,1430 Broadway,NewYork,NY10018.)AMERICANWELDIN GSOCIETY(AWS) ,IncludingBrazing.(DoDldopted) ,IncludingTermsforBrazing,Soldering,Ther malSpraying,andThermalCutting.(DoDadopte d)6 MIL-S -901D(NAVY)(Applicationforcopiessho uldbelddremaadtotheAmeriuanWeldingSociet y,Inc.)

5 , , ,Miami,FL33135.)(Non-(30vernmentstandard sandotherpubltcatione r~ ) (exceptforrelatedassociateddetailspecifi cations,specificationsheetsorMS#tandard8 ),thetextofthisdooumenttakoapreued* ,however,#upar# * , ~.Requirementsuontainedhereinareintended toestablishgeneralshocktestcriteria,andt oprovideabasisforselectlonbythecontracti ngactivityorcontractorofdetailedshocktes trequirements( )whichmustbetailoredtosuitthedesign,func tion, ~.Whereacquisitionrequirementsarenotspec ifiedinthecontract( ),thecontractorshalldeveloptherequiredin formationonthebasisofthisspecificationan donthebasisofthecontractor &~rovalofrewrementzWhn8pecifiedinthecont ractororder,detailedtestprocedures 901D(MAVY)principalunit( (a)).

6 3, (subassemblytest)shallbeperformedonlywhe nspecified( ) (orrecommendedbythecontractorforconsider ationbytheacceptanceauthority) ( ). (seefigures1and2)oruponfloatingshockplat forma( )forshocktestinginkhomannerspecified( ).Shockmachinesorfloating# ,andproviderequirementswhichshallbeobser vedbythecontractorintheeventthattherequi redmountingfixturedesignionotspecifiedby thaaaqut~ ,sincetheao~equirementsarooftencontingen tuponcharacteristicsofthetesteditem(such lssize,weight,andmeansofattachment) ,items tobe tustwf#hailmdrmally beattac?sed *otheanvilplateofthelightweightuhockmach inebymeansofstandardmountingfixtures4A,4 C,6D-1,6D-2,6E;* ,anappropriatestandardfixtureshallbesele ctedbythecontractor( ), , sinstallationdeaw~ $ ofresilientmountings(includingsnubbers) :Shocktestingofclass111itemsintherigidly mountedconfigurationsolelytoqualifytheit emsformountinginbothrigidlyandre@ili@ntl Ymountodconfigurations$naybepermlttodbys pplisablaacqui si~iondouumemt#.

7 PermissiontodosoIssubjeuttotheprovisiont hattheresilientmounts,subbasa,hold-downm eans,-dothercomponentsuniquetotheresilie ntlymountadinstallationareselected,desig ned,Orshocktestedtosuitseparatelyinvoked shockrequirements( ).(f)Te#tfixturesforhull-mountedheavywei ghttestitem8shallbeattacheddirectlytotho standardfloatingshockplatforminnsbottoms tructure( $e3)ortotransverseorlongitudinalhullstif f~neraofthelargefloatingShockplatform(se efigure4) (a).(g) $ ,roctlxplosion13 MIL-S -901D(MAVY) (insofarlspractical) (h)Unlessotherwisespecified( ), ~sidaofthafloatingshockplatform.(i) ~bottomstructure.(j)Acquisitiondoc~ *W( ).

8 (k)Wherehold-downboltsfortestitemsarespe cifiedtobetorquedtospecificvalue=inthesh ipinstallationsthehold-downboltsshallbat orquedtotbesovaluesintheshocktestinstall ation( ).Kl ) Bblt ing u&M tbk~ctam itexittti > ~achodwtbetgstgditembythe#Areainema aswill14 MIL-S -901D(NAVY)(b)(c) ,useofdummymasseslqualinweighttotheweigh tofthefirst5feetorfirst10diameters(which everisofgreaterweight)oftheconnecteditem willbeconsideredacceptable,unlessotherwi sespecified( ).Forpurposesofsimulatingpipingloads,the weightofcontainodfluid# ( ).Incaseswheretesteditemswillderivelsubs tantialdegreeofsupportfromrelativelyrigi dshipboardconnections(suchthattheconnect ionsaffectivelyserveassecondaryfoundatio ns),therestrainingeffectsoftheseconnecti onsshallbesi!

9 ,connectionsbetweentheresilientlymounted itemandother(separatelymounted)itemsshal lberepresentedduringtheshocktestifshock- inducedrelativemotion (butnotlll)ofagroupofidenticalsubsidiary componentswhichareInstalledonacommonsubb ase( ).Dummymaxsesusedforsimulatingsubsidiary componentsshallpossessthesameweight,cmte r-of-gravity, ~ ~aemblissduringtypeAortypeBtestswill beconsidered bythsacceptanceauthorityincasealwheresub assembliesassociatedwithaprincipal15 MIL-S -901D(NAVY) ( ). , (#* ).Inordertoassureconsistentshockhard~nlm g, v~ ,approvalofthemodificationshallbeobtaine dfromtheNavalS* ,threeblowslthammerheightsof1,3, ,back, ,itmaybemorebeneficialtoconductal-footte stineachofthethreemutuallyperpendiculara xes, *igbtshocktestsshallbeasspecified($ ).

10 Ifthisinformationisnotspecified, , ,aminimumofsixblows[ofthreegroupsoftwobl owseach)# , ,numberofblows, (tosimulateshipboardshockloadingsintheve rticaldirection).Theotherblowofeachgroup shallbeconductodwiththetesteditemmounted intheinclinedposition(tosimulateshipboar dshocklocdingsintheathwartshipdirection) . ,threeblowspergroup(nineblowstotal)shall 16 MIL-S -901D(NAVY) ( ).Operatingconditionstoberepresentedduri nganyparticulargrouporgroupsofblowsshall beasspecified( ).IfthigInformationisnotspecified, (ormore) , #(pounds) feet)vUnder1, ,000-2, ,000-3, ,000-3, ,500-4, ,000-4,200 ,200-4, ,400-4, ,600-4, ,800-5, ,000-5, ,200-5 , ,400-5, ,600-6, ,200-6, ,800-7, ,nocorrectionsbeingfortheblowsofgroupsIa ndTheheavyweightshocktestseriesconsigtso ffourshots, (!]