MIL-P-85891(AS 6
MIL-P-85891(AS 6 May 1988MILITARY SPECIFICATIONPLASTIC MEDIA, FORREMOVAL OF ORGANIC COATINGSThist h e Navalandands p e c i f i c a t i o n i s approved f o r use w i t h i nA i r Systems Command, Department o f t h e Navy,i s a v a i l a b l e f o r use by a1 l DepartmentsAgencies o f t h e Department o f Defense.1 . SCOPE1 . 1 Scope. This s p e c i f i c a t i o n covers f i v e types o f p l a s t i c media used f o rremoval o f o r g a n i c c o a t i n g s i n an a b r a s i v e b l a s t o p e r a t i o n .1.2 c l a s s i f i c a t i o n .and c o l o r as f o l l o w s :1.2.11.2.2The p l a s t i c media s h a l l be c l a s s i f i e d by type, gradeTypes.Type I-Type I 1- Urea FormaldehydeType 111-Me1 am1 ne formal dehydeType I V-Phenol formaldehydeType t(Thermoset)(Thermoplastic)Grade.Grade AGrade B-Manufactured f r o m v i r g i n p l a s t i c s .Manufactured from scrap p l a s t i c s .Benef ic i a1 comments (recommendations, a d d i t i o n s , d e l e t i o n s and any p e r t i n e n td a t a which may be o f use i n improving t h i s document should be addressed t o :Systems E n g i n e e r i n g and S t a n d a r d i z a t i o n Department (Code 53), Naval A i rE n g i n e e r i n g Center, Lakehurst, NJ 08733-5100, by u s i n g t h e self-addressedS t a n d a r d i z a t i o n Document Improvement Proposal (DD Form 1426) appeari ng a tt h e end o f t h i s document o r by l e t t e r .AMSC N / ADISTRIBUTION STATEMENT A .FSC 5350Approved f o r pub1 i c r e l e a s e ; d i stri b u t i o n i s u n l i m i t e d
MI L-P-8589 1 ( A S 1.2.3 Colors. When colored, Grade A finished products shall be uniformlycolored as spectfied below. When colors are not specified, Grade A s h a l l notcontain coloring agents. Each type of grade B finished product shall bemu1 ticolored and shall use the numeric 6 in the color' space o f the part number.Color No.Type I y p eI1Type I11123456TypeIVType VGrade B- tight blue- Light yellow- Light pink- Dark brown- Light Grey- Mu1 ti colored1.3 Part Numbers. Part numbering system shall be as indicated below.Thi s number is intended for cataloging and ordering purposes.xM85891Specification identifierType I Type I1 Type I I I Type IV TypeV -LXXXXTParticle size range1(see 3.4)Color No. (see1.2.3) ( When acolor is notspecified, t h enumeric 0 s h a l l beused.2345-Grade( s e e i.2.2iExample. Type I, grade A , 12 to 20 particle size range plastic blast mediamay be ordered as M85891-lA1-1220 or M85891-1AO-1220. Type I, Grade 8, 12 to20 particle size range is ordered as M85891-186-1220. Type 11, Grade B, 12 to20 particle size range is ordered as M85891-2B6-1220.2. APPLICABLE DOCUMENTS2.1 Government documents.2.1.1 Specifications and standards. The following specifications andstandards form a art of this soecification to the extent specified herein.Unless otherwise kpecified, the' issues o f these documents shai 1 be thoselisted in the issue of the Department of Defense Index of Specifications andStandards (D0DISS)and supplement thereto, cited in the sol i ci tation.SPEC1FICATIONSFEDERALDry Cleaning SolventAluminum A1 loy, 2024, Plate and Sheet
MIL-P-85891 (AS)Federal ( C o n t i nued)Aluminum A l l o y 7075, P l a t e and SheetS i e v e s , Standard, f o r T e s t i n g PurposesSacks, Shipplng PaperC l o t h , Cheesecloth, Cotton, Bleached andUnbl eactiedBox, Wood, C l e a t e d PlywoodBox, Wood, Nai l e d and Lock CornerDrum, S h i p p i n g and Storage:Gallon CapacityPPP-D-723S t e e l , 16 and 30Drums, F i b e rM I L I TARYMIL-P- 1 16P r e s e r v a t i o n , Methods ofMIL-A-9962A b r a s l ve Mats, NonHoven and Nonmetal 1 i cMIL-P-23377P r l m e r Coating, Epoxy Polyamlde, Chemlcai andSolvent ResistantBox, Shipping, Consol i d a t i o nChemical Conversfon M a t e r i a l s f o r C o a t i n gA 1 umi num and A1 umi num A1 l o y sC o a t i n g , Urethane, A l i p h a t i c I s o c y a n a t e , ForAerospace A p p l i c a t i o nMIL-C-85570C l e a n i n g Compound, A i r c r a f t , E x t e r i o rSTANDARDSFEDERALFED-STD-313M a t e r i a l S a f e t y Data Sheet, P r e p a r a t i o n andThe Submlsslon ofM I L I TARYMIL-STD- 104L i m i t For E l e c t r i c a l I n s u l a t i o n C o l o rMIL-STD- 105Sampling Procedures and Tables f o r I n s p e c t i o nby A t t r i b u t e s
.MILITARY (Continued)MIL-STD-129M I L-STD- 147-Marking f o r Shipment and StorageP a l l e t i z e d U n i t Loads2.1.2 Other Government documents. The f o l lowing o t h e r Governmentdocuments form a p a r t o f t h i s s p e c i f i c a t i o n t o the e x t e n t s p e c i f i e d h e r e i n .Unless otherwise specified, the issues s h a l l be those i n e f f e c t on the date o fthe s o l i c i t a t i o n .DEPARTMENT OF TRANSPORTATIONDOT22ADOT228-Wooden Drums, G l ued PlywoodWooden Drums , G l ued PlywoodNAVAL CIVIL ENGINEERING LABORATORY (NCEL)NCEL REPORT CR 87.011-E x p l o s i b f l i t y and I g n l t a b l l i t y o f P l a s t i cAbrasive Media(Copies o f s p e c i f i c a t i o n s , standards, handbooks, drawings, and publ i c a t i o n sand other government documents r e q u i r e d by c o n t r a c t o r s i n connection w i t hs p e c i f i c a c q u i s i t i o n f u n c t i o n s should be obtained from t h e c o n t r a c t i n ga c t i v i t y or as d i r e c t e d by the c o n t r a c t i n g a c t i v i t y . ildocuments form a p a r t o f t h i s2.2 Other publ i c a t i o n s . The f lowings p e c i f i c a t i o n t o the e x t e n t s p e c i f i e d herein. Unless otherwise s p e c i f i e d , theissues o f the documents which are DOD adopted s h a l l be those l i s t e d i n theissue o f the DODISS s p e c i f i e d i n the s o l i c i t a t i o n . Unless otherwises p e c i f i e d , the issues o f documents n o t l i s t e d i n the DODISS s h a l l be the issueo f the nongovernment documents which i s c u r r e n t on the date o f thesollci tation.AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)ASTM D792-Test Method f o r S p e c i f i c G r a v i t y and Densityo f P l a s t i c s by DisplacementASTM D2583-I n d e n t a t i o n Hardness o f R i g i d P l a s t i c s byMeans O f a Barcol ImpressorASTM D3683-Test Method f o r Trace Elements i n Coal andCoke Ash by the Atomic Absorption MethodASTM D3951-Commerci a1 PackagingASTM STP 447 B-Manual on Test S i e v i n g Methods( A p p l i c a t i o n f o r copies should be addressed t o the American S o c i e t y f o rTesting and M a t e r i a l s , 1916 Race S t r e e t , P h i l a d e l p h i a , PA 19103.)
MIL-P-85891 ( A S )SOCIETY OF AUTOMOTIVE ENGINEERS (SAE)AMS 4377-Magnesium Alloy, Sheet and Plate, 3.0 A1 1.0Zn, Cold Rolled, Partially Annealed (AZ31B-HZ61(Application for copies should be addressed to t h e Society of AutomotiveEngineers ( S A E ) , 400 Commonwealth Drive, Warrendale, PA 15096.)(Nongoverment standards and other pub1 ications are normal 1 y avai lab1 e fromthe organizations which prepare or which distribute the documents. Thesedocuments also may be available in or through libraries or other informationalservices. )2.3 Order of precedence. In the event of a conflict between the text ofthis s ecificationand the references cited herein (except for associateddetai 1' specifications, specification sheets or MS standards), the text of thisspecification shall take precedence. Nothing in this specification, however,shall supersede appl i cable laws and regulations unless a specific exemptionhas been obtained.3 . REQUIREMENTS3.1 First Article. Unless otherwise specified in the contract or purchaseorder, a sample of the finished product shall be subjected to first articleinspection (see 4 . 3 and 6.3).3.2 Materials. The finished product shall be made from chlorine-freecured plastic stock of either polyester (for Type I), urea formaldehyde (forType II), melamine formaldehyde (for Type III), phenol formaldehyde (for TypeIV), or acrylic plastic (for Type V ) , by processing to the desired sizedistribution specified herein. The finished product shall be magneticallycleaned prior to shipment. The finished product shall contain no inorganicfillers, but may contain anti-static agents. The odor of the finished productshall not be objectionable during actual use.3.2.1Hardness of plastic stock. The Barcol hardness of the plastic stockprlor to crushing shall be within the following limits, when tested asspecified in 4.5.1 (The approximate MOH hardness is included for informationonly) :'FypeBarcol hardnessApprox . MOH hardness
MIL-P-85891 (AS)3 . 2 . 2 Color. Dyes or pigments shall be. allowed for coloration and shall beblended into the resin prior to cure (see 1.2.3). Where uniform colors arespecified, the following color codes shall be used (all colors shall be inaccordance with MIL-STD-104):TypeTypeTypeTypeTypeII1111IVVLight blueLIght yellowLight pinkDark brownLight grey3 . 2 . 3 Sources of plastic stock. The finished product shall bemanufactured from selected plastic stock of the exact chemical type requiredby this specification. Grade A finished product shall be manufactured fromvtrgin plastlc stock (material in the form of unprocessed sheet or block madespecifically for the production of plastic media); Grade B plastic stock shallbe scrap plastlc (material produced as a by-product of the manufacture ofplastic items such as shirt buttons, dinnerware, etc.). An infraredspectrogram of the finished product shall be essentially identical to those inFigures 1 through 5, dependent on type, when analyzed as specified in 4.5.2.Mixtures of different types of plastics shall not be permitted.3 . 2 . 4 Explosibility and ignitability. The finished product shall not bean explosive or ignitable hazard when tested as specified 4.5.3 (See 6.6).3.2.5 Toxicity. The finished product shall have no adverse affect on thehealth of personnel when used for its intended purpose. Material safety datasheets for the dyes or pigments used i n the media, for the media itself andfor any material added to the media after curing (such as antistatic agents)shall be prepared and submi tted in accordance with FED-STD-313, one copy ofwhich shall accompany the sample being submitted for first articleinspection. Questions pertinent to the effect of the finished product on thehealth of personnel when used for its intended purpose shall be referred bythe acquiring activity to the appropriate medical service(see 4.3.2 and 6.4).3 . 3 Physical and chemical propertles. The physical and chemicalproperties of the finished product shall be in accordance with Table I, whentested as specified in 4.5.3 . 4 Particle size. The finished product shall have a particle sizedistribution as shown in Table 11, when tested as specified in 4.5.11.3 . 5 Performance. The fini shed product shall conform to the performanceproperty requirements of Table I11 and the surface residue and anti-staticbehavior requirements of 3.5.1 and 3.5.2, respectively, when tested usingfinished product conforming to the 20-30 particle size distribution. Othersizes of finished product shall be manufactured from the same plastic stockand shall differ only in size distribution resulting from the manufacturer'sscreening operation. Blasting parameters and requirements shall be asspecified in Table III.
MIL-P-85891 ( A S )Table I .P h y s i c a l and chemical p r o p e r t i e s .PropertyC h l o r i n e c o n t e n t , maxAsh c o n t e n t , max.( X by wt.Grade AGrade BI r o n Content, rnax.(1 by w t . )Specific gravi t yminimummax I mumE x t r a c t c o n t e n t , max( X by w t .pH o f water e x t r a c tminimummaximumConductivity(mho/cm, max)Water a b s o r p t i o n(% by w t , max)Ypavy p r t i r u l a t z(% by w t , max),ight p a r t i c u l a t e s(7' by w t , max)TABLE 11.20-30Maximum%? e t a i n PassParticle size d i s t r i b u t i o n .30-4040-6020-4060-80Maximum% Maximum% Maximum% Maximum%R e t a i n Pass R e t a i n Pass R e t a i n Pass R e t a i n Pass
MI L-P-8589 1 (ASTab1 e 111. Performance properties .Type I1Type I11Type IV Type I' T e s t11.14.5.12Blast parametersNozzle Pressure( p s i ) 11Feed rate (Ibsthr)PropertyStripping rateSq ftlminute, (min)252525140-170 125-1 55 ssmglsq crn, maxConsumptionAvg X per cycle,max .JAir pressure in the hose immediately adjacent to the n !zle as measuredwi th a hypoderrni c need1 e .-I3.5.1 Surface re idue. Types I thru I Vshall not produce a surfaceresidue which interferes with the application o f MIL-C-81706 aluminum chromateconversion coating. Blast residues from Type V shall be removable with methylethyl ketone. Testing s h a l l be as specified in 4.5.12.4.3.5.2 Anti-static behavior. The finished product shall not cling to theinterior walls of a well qrounded blast booth or glove box during thestripping test specified in 4.5.12.1.3 .6 Storage stability. After storage for one (1) year under normalcond itlons of storage, the finished product shall meet all the requirements ofthis specification.3.7 Workmanship. The finished product shall be manufactured i n accordancewith the best commercial practice for this type of product and shall be freefrom any foreign matter detectable with the naked eye.4. QUALITY ASSURANCE PROVISIONS4.1 Responsi bi 1 ity for inspection. Unless otherwise specified In thecontract or purchase order, the contractor i s responsible for the performanceo f a1 1 inspection requirements as specified herein. Except as otherwisespecified in the contract o r purchase order, the contractor may use his own orany other facilities suitable for the performance of the inspectionrequirements specified herein, unless disapproved by the Government. TheGovernment reserves the right to perform any of the inspections set forth inthe specification where such inspections are deemed necessary to assuresuppl ies and servi ces conform to prescribed requirements.
MIL-P-85891 (AS)4.1.1 Responsibility for compliance. All items must meet all requirementsof sections 3 and 5. The inspection set forth in this specification shallbecome a part of the contractor's overall inspection system or qual i typrogram. The absence of any inspection requirements in the specificationshall not re1 ieve the contractor of the responsi b i 1 i ty of assuring that a1 1products or supplies submitted to the Government for acceptance comply witha1 1 requirements of the contract. Sampl ing in qual i ty conformance does notauthorize submission of known defective material , either indicated or actual,nor does it commit the Government to acceptance of defective material .4.1.2 Source inspection. The finished product furnished under thiss ecificationshall be source ins ectedto insure that the plastic media meetsthe Quality Conformance inspection prior to leaving the manufacturer's plant.The material shall be packaged as specified in Section 5 of thisspecification. The manufacturer shall maintain a record of the quality testresults and a small retain sample, by lot number, for a period of two years.A copy of the qual ity conformance test results shall be forwarded wi th eachlot.- r4.2 Classification of inspections.herein are classified as follows:The inspection requirements specifieda. First article inspection (see 4.3)b. Quality conformance inspection (see 4.4)4.2.1 Inspection conditions. Unless otherwise specified, all inspectionsshall be erformed in accordance with the test conditions specified in thetest rnethbd document or the appl fcable paragraph of this specification.Standard laboratory conditions shall be 22" 2"C (72.4" 4"F and 50220 percentRelative Humidlty,4.3 First article inspection. First article inspection shall consist ofall the tests and inspections specified in Table IV. There shall be nofailures in any requirement (see 6.3).4.3.1 First article samples. The first article sample shall consist of 50pounds of finished product packaged as specified in section 5 of thisspecification. Additionally, a sample of the plastic stock, suitable fordetermining hardness, shall be included. The product shall be produced in thefaci 1 i ty to be used in fi 1 1 ing the contract or purchase order.4.3.2 anufacture;' data. In addition to the first article samples, themanufacturer shall submit 2 copies of a certified test report which show thematerial forwarded for first article meets all the requirements of thisspeciflcation. The manufacturer shall include written certification that thefinished product meets the requirements for material (3.2). hardness ofplastic stock (3.2.1 , color (3.2.2), sources of plastic stock (3.2.3),explosibility and ignitability (3.2.41, toxicity (3.2.5) and storage (3.6)The manufacturer shall a1 so furnish the toxicoloqical data required toevaluate the safety of the material and any additives added after curing ofthe base resin for the proposed use through the submission of the MaterialSafety Data Sheet detail ed in FED-STD-313.
Table IV First Article InspectionCharacteristicIRequirementTest paragraphMaterial3.24.5.2Hardness, plastic stock3.2.14.5.1Col or3.2.2ViInfrared spectrogram3.2.34.5.2Explosi bi 1 i ty3.2.44.5.3ChlorineTable I4.5.4Table I4.5.5Iron contentTable I4.5.5.1Specific GravitylabieI4.5.6Extract contentTable I4.5.7Table I4.5.8Conduct iv i tyTable I4.5.8Water absorptionTable I4.5.9Heavy and light particulatesTable I4.5.10Particle size3.44.5.11PerformancePaint stripping rateAggressivenessProduct consumptionSurface residueAnti-static behavior3.5Table 111Table I11Table 44.5.12Storage stability3.6All ofaboveAshcontentWorkman sh ipsualV i sual
MIL-P-85891 (AS14.4 Quality conformance inspection.4.4.1 Lot formation. A lot shall consist of 2500 pounds (1250 kg) of thefinished r o d u c t roducedfrom one batch or o r t l o nthereof (see 6 . 3 ) . Lotsshall be identified with a sequential numbering system.4 . 4 . 2 Samplinq and inspection.4.4.2.1 Visual examination. A random sample of plastic shall be selectedfrom each lot in accordance with Inspection Level S-2 of MIL-STD-105. Thesample unit shall be one pound (0.5 Kilogram) o f plastic media which shall beobtained by selective sorting in accordance with ASTM STP 447 8, and onesample suitable for hardness testing. Each unit of the sample shall bevisually examined for conformance to the color and workmanship requirements.Nonconformance of the sample to either requirement shall be cause to rejectthe lot represented by the sample.4.4.2.2 Physical property examination. After visual examination, eachsample unit selected in 4.4.2.1 shall be tested to the requirements in TableIV, except for explosibility (4.5.31, water absorption (4.5.91, performancerequirements (4.5.12) and storage stability. Failure of any test specimen toconform to any qua1 I ty conformance tested requirement in that table shall because to reject the entire lot.4.4.2.3 Packaging inspection.4 . 4 . 2 . 3 . 1 xaminationfor packaging and marking.An examination shall bemade to determine that packaging and marking comply with the requirements otSection 5 of this specification. Defects shall be scored in accordance w i t hTable V. The sample unit for this examination shall be one shipping containerfully prepared for delivery, except that it shall not be palletized and neednot be sealed. Shipping containers fully prepared for delivery that have notbeen palletized shall be examined for closure defects. The lot size shall bethe number of shipping containers in the end item inspection lot. The samplesfor this examination shall be selected at random in accordance withMIL-STD-105, Inspection Level S-2 and an AQL of 4.0 Defects Per Hundred Units.4.4.2.3.2 Examination for palletization. An examination shall be made todetermine that the palletlzation complies with the requirements of Section 5of this specification. Defects shall be scored In accordance with Table VI.The sample unit shall be one palletized unit load fully prepared fordelivery. The lot size shall be the number of palletized unit loads in theend item inspection lot. The samples for this examination shall be selectedat random in accordance with MIL-STD-105, Inspection Level S-1 and an AQL of6.5 Defects Per Hundred Uni ts .4.5 Test methods. Tests shall be performed at standard laboratory conditions(see 4.2.1). Finished product samples for tests shall be obtained throughselective sorting as specified in ASTM STP 447 B.4.5.1 Hardness. Barcol hardness shall be determined in accordance wi thASTM D 2583. The hardness shall be determined on the selected plastic stockbefore processing to the finished product. The hardness shall be inaccordance with the requirement of 3.2.1
MIL-P-85891(AS TABLE V. Packaging inspection.DefectExami nePackagi ngContalner not as specified; closures notaccomplished by specified or required methodsor materials. Puncture, break, leakage orseepage of contents. Non-conforming component,component missing, damaged or otherwisedefective. Bulged or distorted container.Marki ngsData orni t t e d , i 1 legible, incorrect, incomplete,or not In accordance with c o n t r a c t requirements.TABLE \!I.1Pa!!etiza.tinn inspection.DefectExamineFinished dimensionLength, width, or height exceeds specifiedmaximum requi rement .Pal letlzationNot as specified. Pallet pattern not asspecifled. Interlocking of loads not asspecified. Load not banded with requ i redstraps as specified.WeightMarki ngIExceeds maximum load limits.of impropersize, location, sequence or method ofappl lcation.Omitted, incorrect, illegible,
4.5.2 Infrared spectrogram. The finished product shall be prepared foranalysis by pyrolysi s using a Spectra-Tech pyrolyzer (Stamford Ct, Model No.PY-2,P/N 0018-002) or equivalent. Place a sample of finished product, up to50 milligrams (mg), on the platinum heater strip and cover the chamber with apotassium bromide plate. Pyrolyze the sample in air at 900 C (1650 F) for 15seconds. Allow several minutes for the vapors to deposit, then remove theplate and press a second plate over the condensed pyrolyzate. Determine theinfrared spectrogram of the pyrolyzate from 4000 to 400 wavenumbers at amfnlmum resolution of 2.5 wave numbers.4.5.3 Explosibility and ignitability. The finished product shall betested in accordance w i t h the U. S. Department o f the Interior, Bureau ofMines recommended practice for determining such hazards' as set forth in NCELReport No. CR 87.011 (see 6.6). Finished product which satisfies thefollowing criteria are not considered explosive or ignitable hazards when usedin a properly designed blast system:-Equl pment1.2-L FurnaceMedla slze200 mesh orsmallerParameterMinimum autolgnitiontemperature (MAIT)350eC(662"F)20-L Chamber with2500 J ignitor200 mesh orsmal lerLean flammabilitylimit (minimum)40g/cu M .20-LChamber with?Ann-- - J i gni torMaximum explosi bl eLimit,40meshsize4.5.4 Chlorine by sodium fusion. Weigh 0.05 gm of finished product into adisposable qlass test tube, add a piece of sodium metal (about 0.15 qm) to thetube, then heat over a bunsen burner to a dull red. Allow the test rubecontents to cool, then add 0.5 ml ethanol to the tube and a1 low it to reactunti 1 there i s no evidence of residual sodium metal . Heat the test tubecareful ly to evaporate the ethanol and continue to heat unti 1 it glows a dullred. Immediately drop the test tube into 50 mls of distilled water, crush thelower end of the tube, and s t i r to dfssolve any sodium chloride which hasformed. FI lter the solution into a 250 ml beaker, acidify with 10 or moredrops of concentrated nitric acid, and add 10 drops of 0.1 M s i lver nitrateand swirl the beaker several seconds. The presence of chlorine is indicatedby the development of a whtte precipitate which disappears upon the additionof several drops of concentrated ammonium hydroxide. The fini shed productshall be defined as having no more than a trace of chlorine when the whiteprecipitate is less than that produced when 50 ml of a 16.5 ppm sodiumchloride solution in distilled water I s treated with acid and silver nitrateas above.4.5.5 Ash content. Three grams of flnished product shall be weighed tothe nearest 0.1 mq into a tared ceramic crucible. The finished product shallbe ignited with a-fisher burner until no loss of material is visuallyapparent. The crucible shall be heated in a muffle furnace at 850 C (1560 F)to constant sample weight. The ash residue shall be calculated as a percentof initial sample welght.
4.5.5.1 Iron content. Total iron content of the finished product s h a l l bedetermined using the ash from 4.5.5 in accordance with ASTM D 3683. Totaliron content shall be calculated as follows:ash content(%) X iron content(%)Total iron content(%) 1 004.5.6 Specific gravity. Specific gravity shall be determined inaccordance with ASTM D 792 using n-butyl alcohol as the immersjon liquid.4.5.7 Extract content. A 25 gm sample of finished product shall beweighed to the nearest 0.1 mg into a 250 ml beaker. One hundred ml ofmethylene chloride shall be added and the beaker covered with a watch glassand magnetically stirred for one hour. The mixture shall be filtered througha prewashed, slow, fluted paper f i 1 ter into a tared 250 ml beaker, rinsing theretained media with an additional 25 rnl of solvent. The filtrate shall beevaporated to remove the solvent by heating in a vented, forced draft oven at60 t2'C (140 2'F for 4 hours. The resldue shall be weighed to the nearest0.1 mg and the extract content calculated as follows:Extract content (%I -residue weight X 100Sample weight4 . 5 . 8 pH and conductlvi t v . Twenty-five grams of the finished productshal l be added to a clean 100 ml glass graduated cyl inder that has beenthoroughly rinsed with distilled water. Distilled water shall be added to the100 ml mark of the cyl inder, then stoppered. The cyl inder shall be shaken for5 seconds, then permitted to stand undisturbed for 5 minutes. The cylindershall then be shaken again and the pH and conductivity of the mixturedetermined for conformance to the requirement in Table I.4.5.9 Water absorption. Five grams of finished product, weighed to thenearest 0.0001 aram. shall be w i s h e d into a tared covered Petri dish. Thecontents shall 6e dried in a 105'12' (221 4'F oven for 1 hour, then coveredcooled and reweighed. The uncovered dish shall be placed in 100 percentrelative humidity chamber at standard temperature for 24 hours. The dish shallbe removed from the chamber, covered, and then reweighed. Hater absorptionshall be calculated as follows:(B-A X 100Water absorption AWhere AB weight of dried finished productweight o f m i s t finished product.4.5.10 Heavy and liqht particulate contaminants.4.5.10.1Solvent preparation. The solvent shall be prepared from
MIL-P-85891 (AS)trichlorotrifluoroethane (specific gravity of 1.565) and fluid conforming toP-D-680 (specific gravity of 0.781. Two solvent mixtures shall be prepared toyield the following specific gravities: Mixture A shall be 0.10 greater thanthe specific gravity of the finished product ( for Types 11, 111, and IV, usepure trichlorotrifluoroethane or prepare a blend of P-D-680 and aperfluoroalkane solvent). Mixture B shall be 0.10 less than the specificgravity of the finished product.4.5.10.2 Lfght particulates. One hundred grams of the fi ni shed productshall be added to a tall form 600 m l beaker, followed by 400 ml of Mixture B.The contents shall be stirred for 1 minute, then a1 lowed to stand for 5minutes. Any floating particulates shall be decanted onto a 200.mesh screen,tared to the nearest 0.001 gram. The sieve shall be dried to constant weightin an oven maintained at 105' 2"C (221 4"F . The light contaminantparticulates shall be calculated as foliows :Residue weight XlOOParticulate contamination Sample weight4.5.10.3 Heavy particulates. Four hundred ml of Mixture A shall be addedto 500 ml separatory funnel, fol lowed by the addition of 100 grams of thefinished product. The funnel shall be vibrated from side to side while in anupright position for 1 to 2 minutes, then be allowed to stand upright for 5minutes. The settled material shall be drained from the funnel onto a 200mesh sieve, tared to the nearest 0.001 gram. The sieve shall be dried toconstant weight in an .oven maintained at 105" 2"C (221 " 2 4 F ) . Heavyparticulate contaminants shall be calculated as specified in 4.5.10.2 above.4.5.11 Particle size distribution.4.5.11.1 Apparatus. The shaker shall operate with a single eccentriccircular motion at 285' 10 revolutions per minute and with a tapping actionof 15@ 5 strokes per minute to obtain a dependable sieve analysis, Theshaker shall a c c m d a t e s i x 8-inch (20.3 centimeters) diameter sieves withpan and cover. Screen si zes shall conform to U.S. Standard screen s i zes ,asspecified in RR-S-366. Only screens for which a requirement is specffled InTable I1 shall be used to test a specific size range. For example: Only U.S. standard screen sizes 16, 20, 30, 40, 60 and 100 shall be used to test20-40 materials for conformance to Table I1 requirements.4.5.11.2 Procedure. The sieves shall be nested in the order of decreasingsize with the largest sieve on top and a pan on the bottom. A sample weighing75 to 100 grams shall be obtained using sampling techniques recommended inASTM STP 447 8, weighed to the nearest 0.1 gram, and placed on the top sieveof the nest. The nest of sieves with the cover in position shall be placed inthe testing machine and vibrated for exactly 10 minutes with the tapper inoperation. The abrasive remainlng on each sleve and pan shall be weighed andreported. Calculate the necessary percentages to determi ne compl i ance wi th3.4.
4.5.12 Performance. Performance testing shall be conducted in a directpressure blasting device. The blasting parameters shall be as specified i nTable 111 and the following:--Nozzle distance from s u b s t r a t eNozzle angle (from horizontal)c. Nozzle sizea.b.4.5.12.110 inches80 degrees---114 inch dia.(Vacu-Bl
MIL-P- 1 16 MIL-A-9962 MIL-P-23377 MIL-C-85570 STANDARDS FEDERAL FED-STD-313 MI LI TARY MIL-STD- 104 MIL-STD- 105 Aluminum Alloy 7075, Plate and Sheet Sieves, Standard, for Testing Purposes Sacks, Shipplng Paper Cloth, Cheesecloth, Cotton,
mil-dtl-22992 mil-dtl-24308 mil-dtl-25516 mil-dtl-25955 mil-dtl-26482 mil-dtl-26500 mil-dtl-26518 mil-dtl-27599 mil-dtl-28731 mil-dtl-28748 mil-dtl-28840 mil-dtl-32139 mil-dtl-38999 mil-dtl-39024 mil-dtl-3933 mil-dtl-5015 mil-dtl-5015 h mil-dtl-55116 mil-dtl-55181 mil-dtl-55302 mil-dtl-83413 mil-dtl-83503 mil-dtl-83513 mil-dtl
mil-dtl-22992 mil-dtl-26482, i mil-dtl-26482, ii mil-dtl-26500 mil-dtl-27599 mil-dtl-28748 mil-dtl-28804 mil-dtl-28840 mil-dtl-38999, i mil-dtl-38999, ii mil-dtl-38999, iii mil-dtl-38999, iv mil-dtl-55302 mil-dtl-83503 mil-dtl-83505 mil-dtl-83513 mil-dtl-83522 mil-dtl-83527 mil-dtl-83723, i mil-dtl-83723, iii mil-dtl-83733
mil-prf-123 mil-prf-11015 mil-prf-39014 mil-prf-55681 mil-prf-11272 mil-prf-23269 mil-prf-49467 mil-prf-49470 mil-prf-32535 mil-prf-39006 mil-prf-55365 mil-prf-55342 mil-prf-914 mil-prf-32159 escc qpl 3009 esc
MIL-C-6529 TYPE 3 Royco 483 MIL-DTL-23549 Royco 49 MIL-DTL-25681 Royco 81MS MIL-G-21164 Royco 64 MIL-G-7711A (obsolete) Royco 11MS MIL-G-81827 Royco 22MS MIL-H-5606A Royco 756A MIL-PRF-23699 CI Royco 899 MIL-PRF-23699 HTS Royco 560 MIL-PRF-23699 STD Royco 500 MIL-PRF-23827 TYPE 1 Ro
STANDARDS Military MIL-STD-481 MIL-STD-490 MIL-STD-681 MIL-STD-961 MIL-STD-1 174 MIL-STD-1267 MIL-STD-1 306 MIL-STD-1 464 DOD-STD-1 476 DOD-STD-1686 DOD-STD-2 167 MIL-STD-21 75 HANDBOOKS DOD-HDBK-263 Configuration Control - Engineering Changes, Deviations and Waivers (Short Form) Specificati
MIL-C-16173 MIL-L-19140 STANDARDS MILITARY MIL-STD-22 MIL-STD-248 MIL-STD-271 MIL-STD-278 MIL-STD-”731 MIL-STD-792 MIL-STD-1684 - Paper, Kraft, Treated (Fire Resistant).-Corrosion Preventive Compound, Solvent Cutback, Cold-Application. - Lumber and Plywood, F’ire-retardentTreated.
TNK Tank Coatings, Epoxy Primers MIL-PRF-23236. MIL-DTL-24441. PRM Primers, Single Component TT-P-645. TOP Topside, Alkyds & Polysiloxanes MIL-PRF-24635. INT Interior Coatings (SEA 08) MIL-DTL-24607. MIL-PRF-24596. MIL-DTL-15090. MIL-DTL-1115. HT High Temp Coatings, Metallic TT-P-28. PWD Powder, Interior, Cosmetic MIL
LeveL 2 ANATOmy ANd PhySIOlOgy FOR ExERCISE 74 Section 5 Core and pelvic floor muscles The core The core is traditionally thought of as the area between the pelvis and the rib cage, in particular it refers to the muscles that support, stabilise and move the lumbar region of the spine. Some core muscles cannot be seen, sitting underneath other muscles meaning their functioning is invisible to .
