Document Gzz7oQaZ5pNaDE87592VRbYLm

J7 .MIL-I-2781C sjFjtjct&ie/ 'f&d MIL-I-2781B 3 September 1964 MILITARY SPECIFICATION CCUIATTCaTPIPE'COVERING,' THERMAL n^g specification tea been approved by the Department at Defease tad is mandatory for use by Use Departments of the Army.the Navy, sod the Air Force. 1. SCOPE 1.1 Seooe. * This specification covers preformed thermal insulation for use as an insulating covering on pipes. 1.2 Classification. - Thermal insulation pipe covering shall be of the f^;yring g^es, Basse's and types, as specified (see 6.1): Grade I - Temperatures up to 500*F. Class b - Compounded. Grade H * Temperatures up to 75Cf F. Class e - Fibrous.. Class d - Compounded. Grade m Temperatures up to 1,050*1*. Class e - compounded. Type I - Light density. Type S - Heavy density. f Fibrous. PLAINTIFFS . EXHIBIT 1 JJSM PLAINTIFFS EXHIBIT WV-05104 FSC 5640 i WV-05104 J MIL-I-2/S1C 2. APPLICABLE DOCUMENTS 2.1 The following specifications and standards, of the issue la effect oa date of Invitation ter bids, form a part of this specification: SPECIFICATIONS FEDERAL . PPP-B-&85 * Boxes, Wood. Wlrebouad. 1 PPP-B-S91 - Boxes, Fltertosrd, Wood.Cleaied. I PPP-B-901 - Bans, Wood,' Cteated-Plywood. - PPP-B-621 - Boxes, Wood. Nailed aad Lock-Corner. PPP-B-636 - Boxes, Fiber. . PPP-T-7S - Tape; Pressure-Sensitive Adhesive. Paper, Water Resistant. MILITARY MTUB-10377 - Boxes, Wood-Clesied Veaeer, Paper Overlaid. MIL-L-1054? - Liners, Case; Waterproof. STANDARDS MILITARY MIL-STD-K/S - Sampling Procedures and Tables for Inspection by Attributes. MIL-STO-128 - Marking for Shipment and Storage. (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) ? 7 rther oublicatlons. - The following documents form a part of this specification.' Unless'offiirwtee indicated, the issue in effect on date of invitation for bids shall apply: OFFICIAL CLARIFICATION COMMITTEE Uniform Freight classification Sates. (Application for copies should be addressed to the Official Classification Committee, 1 Park Avenue at 33rd Street, New York 16, N.Y.) 2t> *5 4. MIL-I-2781C American society for testing materia is ' Standard c*302 * Density of Preformed Pipe-Coveriag*Type Thermal Insulation* Method oi Test (or. Standard C-335 Thermal Conductivity of Pipe Insulation, Method of Test tor. (Application tor copies should be addressed to the American Society for . Testing Materials, 1916 Race Street, Philadelphia 3, Perm.) 3. REQUIREMENTS 3.1 Qualification. - The thermal insulation pipe covering &rsisfced under this specification shall be** product which has been tested and has passed the qualification testa specified herein and has been listed on or approved for listing on the applicable qualified products list. 5.2 Material. - The pipe covering shall be composed of heat-resisting compounds suitable for the temperature conditions and the purpose intended. 3.3 Composition. - The composition of the pipe covering shall conform to that of the sample given"qualification approval (see 4.3). 3.4 Form and dimensions. 3.4. l Form and length. - Pipe covering for nominal pipe sizes up to and including 10 inches "sfiaJfbe &nished in sections 3 feet long, spilt la half lengthwise. Pipe covering for nominal pipe sizes larger than 10 inches may be furnished In semi-eylindrial sections or as curved segments, 3 feet in length. Each section or segment shall he generally true to shape and roundness and capable of fitting standard iron pipe sizes. A tolerance of plus or minus 1/9 inch in length will be permitted. 27 3 I MIL-I-2781C 3.4.2 laner diameter. - The inner diameter of the j|pe insulation shall be as shown in table t... , Table I - laser diameter; Iron pipe size Surer dtametei^ * - Tolerance Nominal Inches : Outer diameter : Inches Nominal mcaes - Minas - Pius : men : Inch 1/2 1 3/4 : 1 *: 1-1/4 : 1-1/2 : 2: 2-1/2 : 3: 3-1/2 r 4 4-1/2 : S: e: 7: 8: 9: 10 : IX * : 12 : 14 : 18 16 : 17 : 18 18 tea 32 : 33 : 0.640 1.050 1.315 1.860 1.900 2.375 2.875 3.500 4.000 iSOO 5.000 5.563 6.625 7.825 S. 625 9.625 10.750 11,750 12.750 14. OCX) 15.000 16.000 17.000 18.000 -.000 33.000 0.856 1.096 1.331 1.676 1.816 2.406 2.906 3.531 4.031 4.531 5.031 5.841 6.703 7.703 8.703 9.703 10.828 11.828 12.844 14.094 15.004 16.094 17.094 18.094 --.004 33.094 . ` : ; : : : : : : : : : : : : : : : : : : : : : 0 0 0 0 0 1/64 1/64 1/64 1/64 1/64 1/64 1/32 1/32 1/32 1/32 1/32 1/32 1/32 3/64 3/64 5/64 3/64 3/64 3/64 3/84 3/64 : : : : : : : ; : : : : : : : : : : : : : : : : : : * 1/32 1/32 1/32 1/32 .1/32 1/16 1/18 1/16 1/16 1/16 1/16 1/16 1/18 1/16 1/16 1/16 1/16 1/18 1/16 1/8 1/8 1/8 1/8 1/8 1/8 1/8 Jt&ne f md'titrw^siireBient shall canaua at toe average of six readings on each seetice; three readings of diameter near the ends and at the center of each section to a horteeetai direction, and three vertical measurements of leg height multiplied by two. 4 Zt .Mb e times density (lb s . per end etMKbalf tim es d e n s ity c ( ti. lb f s. t .) o pet* f th cu, e f ts.a)mpolef tested. the seople tested "I & MIL-I-2781C 3.5 2 assistance to vibration, - The pipe covering shall fee In satisfactory coodltion opon4copit^a 'of WtaSTspecttted la 4.11.. _ *&* Simulative service4Mi puiili TTI iiilji,- flulu jn^ine covering ahn in .satisfactory condition upon coalitionoftoe test specified in 4. 5.6 Workmanship, - The orfcmsaship shall be fkst class in every respect. 4. quality assurance provisions 4. i Unless otherwise-specified herein the supplier is responsible for the 'performance of ail inspection requirements prior to submission'for Government inspection and acceptance. Except as otherwise specified, the supplier may utilise his own facilities or any commercial laboratory acceptable to the Govern ment. Inspection records of the examinations and tests shall ce kept complete and available to the Government as specified in the contract or order. 4.2 Qualification tests, - Qualification tests shall be conducted at a laboratory desisted by toe &mu ci Skips. These tests shall consist of the applicable tests specified in 4.S. 4.3 Sampling. - 4.1. l Lot.- For purposes of sampling & lot shall consist of all half seclions or segments of pipe covering of the same grade, class, pipe size and thictoess produced in one plant under essentially the same conditions and offered for delivery at one time. 4.3.2 Sampling for visual, dimensional and density eaaminatlorualMbg liriflBOaHOMMVk a racism'samole"'of half sections or segments shall be MlecteT&om each lot offered for tMM examination In accordance with mmmm*m** Standard MTL-STD-106 at inspection level L~?. The acceptable quality level shall IP equal Z. t percent defective. 4*3.3 Sampling for lot acceptanceteste. A random sample of hall sections'or~segm*ntg snail be selectgu Irom each Inspection lot in accordance with MpMM Standard MIL-STD-iOS at'* inspection level L4 for tne tests specified in 4.^.2. 4 . si MTLX*2781C 4.4 Inspection. - 4.4.1 Visual, dimensional and density examination. - Each oi the sample half sections of'seg(neatsITseiecleoJis aemadanci'wHETlTg be visually and dimensionally examined and the density determined (see 4. 5.3} to verify compliance vitb this specification. "Examination shall be conducted as specified la table IV. Any half section or segment in the sample containing one or more visual, dimensional, or density defects shall be rejected, and U the number of defective half sections or segments in any sample exceeds the acceptance number for that sample, the lot represented by the sample shall be rejected. Rejected iota may he-offered again for inspection provided the contractor has repaired or removed all nonconforming half sections orsegments. The Inspector sha n again select and examine samples from such resubmitted lots to verify compliance with this specification. Table IV Classification of defects in accordance with Standard MIL-STD-1Q6. Categories * Defects Critical; : 1 * . Hone defined. Major: : 101 : Grade, class and type when applicable act as specified. 102 : Material not as specified. 103 : Form not as required; not furnished In segments orsections : as specified, fell to properly encase pipe of the required : diameter. 104 : Length not as required, not within specifiedtolerance. ICS : Thickness not within required tolerance. 106 ; Sections cracked, broken or damaged. Minor; ; 201 : Packing not as required. : : : : : : ; : : : ; 3* J MXL-X-2731C 4.4.2 lot acceptance testa.' Two specimens from each of the mmpie hall sections or Moments seiected^'acccrdaacewUh 4.9. S shall be subjected to the test specified in 4.5.5 sad for those pipe`coverings which in table m have a modulus'of rupture requirement,'the test specified in 4.5. ?. If any one of the sample specimens tested is found td be noUa conformance with this specification, the lot which B represents shall be rejected. 4.4. Z, 1 Possible test failures. - Possible test failures are defined as follows: (a) 'Density: Density exceeds specified maximum value. (b) Hardness: Penetration exceeds required maximum value when tested as specified. (c) Modulus of rupture: Modulus of rupture less than the specified minimum value when tested as required. (d) Composition: (At Government laboratory) Composition not as required when analysed as specified. (e) Stability: (At Government laboratory) Inability of sample to withstand vibration test speci&ed. (f) Thermal conductivity: (At Government laboratory) Thermal aaductivity exceeds required maximum value when tested as specified. (g) Abrasion test: (At Government laboratory) Loss in weight exceeds specified maximum when subjected to the specified test conditions. $) Heating loss and shrinkage: (At Government laboratory) Linear shrinkage, loss in weight, change in hardness exceed the specified maximum values when tested as required. 3* 9 MIL.I.2781C 4-4. 2. 2 Action In case of failure. A rejected lot may be resubmitted for e> inspection only a&er Btomaaafaciiirer, alter being formed of to* reasons lor rejectton/hasaoreworfced toe entire tot ad to remove or correct all nonconlorming material 4. .2.2 Place of testa. * Lot acceptance teste stall be conducted at toe place of fnanufft^tope ^ laciil&ea are available* Otherwise, they shall tie eoa~ ducted si tnejtfMMMBl laboratory designated la 4.4.3, 4.4.. 3 Comparison Inspection. - From each contract or order, or when deemed necessary by toe Government Inspector, but not more than once a year ' for any one manufacturer, samples of tta same grade, class and type of ball sections or segments 9bail be forwarded; to the U. S. Naval engineering Experiment Sutioa, Annapolis, 14d., unless otherwise specified is the contract or order. These samples shall be subjected to aay test considered necessary by the laboratory to determine that the samples are equal to toe sample* upon < which qualification was based. II an unsatisfactory report Is obtained, the laboratory shall immediately notify the Bureau of Ships and the Government inspector. 4,6 Test procedures.- 4.5.1 Conditioning samples. - Test speciodofl shall be dried to constant weight by heating to 22Cf to 33Cf F. (105 to il(fCt). 4.5.2 Composition* The composition shall be determined by chemical analysis, using accepted laboratory methods. 4.5*3 Density, - Density of pipe covering shall be determined In accordance with the melhod 'specified in AST34 Standard C302. 4.5-4 Tharsad conductivity. - Thermal conductivity shall be detarmined in accordance with the m'etb'ocTspecified in A5TM Standard C-335. 10 3* - * MIL-Xt781C MI 6 ardaess.- Hardness shall be determined on the plaatometsr. s owamercUl instrument consisting mainly of two parallel metal disks smarted eo uprights, to which ere fastened rtbta'Md with a i/B-lach diameter ball point* meaoartogr gage graduated in 1/100 mUUmetar (mm,) divisions, and a kUma might. A specimen of the material to be tested shall be placed seder the lustra* ment, sod the 1/3-fech b&U point shall be brought down on the aurtaee etf the specimen corresponding to the outside as received, until the index hand on the measuring gage mates two complete revolutions, the kilogram weight shall then be slowly released from Us supporting disk and allowed to rest on a shoulder of die ball pefet bolder, causing the ball point to sink into the specimen, The depth that the hall point is depressed Into the specimen shall then be read on the graduated measured gage dial to 1/100 ^amau 4.ffl6 Abrasiontest.- The structural strength shall be determined by the abrasion test in this test, twelve l-iaeh cube specimens of the material sad twenty-four S/4-Inch oak cubes (specific gravity of the wood 0.6b) shall be placed In an oak boa having Inside dimensions of 7-1/2 by 7-3/4 by 7-3/4 inches, Hie opening of the box shall then be closed and the box rotated about Us own axis at a speed of 60 revolutions per mlouie for two 10-minute periods. At the end of each 10-minute period, the cubes of the material under test shall be removed from the box and the percentage of loas in weight, due to pulverisa tion and breakage, shall be determined. Hie box ahall-be cleaned to remove ail pulverized and broken particles prior to each test* 4. S'. 7 Modulus of rupture,- The test for determining the modulus of rup ture of the material5"sbau KnsEst of supporting specimens of the materials on 10-inch centers and suspending a load from a saddle centrally located on the specimens with an Increase of load until the specimens are broken. The speci mens shall be 12 inches In length and in guadnuite from the itmet and outer layers of pipe covering. The saddles and centers shall be constructed to con form to the curvature of the specimens. Ten specimens of each layer sh&U be i * 11 .* MOI2781C used for the test. The modulus at rupture shall he the average of the results oa all specimens. The following e<iuatton'sh&U be used in comping'the modulus of rapture: 0.25WD js-o. 6 (R3 (R3*r8) 0. 3214 (R4 * r4) - 0.2829 CR3 - r3)2 . 2-r2) Where: S = Modulus of rupture (pounds per square inch). W* Breaking load (pounds). D Distances between centers of supports (inches). B Radius of outer periphery of pipe-covering specimens (inches). r = Radius of inner periphery of plpe-toveriag speci mens (Inches). s Hardness, loss in weight, and shrinkage*-i 4.J a specimens shall he placed is ar^lectricallyheatedovenropecimens shall be heated at 50Cf, 750, and 1,050* F., respectively, for grades I, n, and tn for 5 hours* After removal from the oven, the specimens shall be examined to determine loss in weight, linear shrinkage, and change In hardness. gfrtqtH >ipe covering 4.ft 9 Resistance to vibration, - `The ability of the pipe\cove?lag to withstand vibration shall be determined from sections of tha covering which have been subjected to the maximum pipe temperature for the/respective grads for a period of 100 hours. The sections then shall be appliedland secured between two circular 9-1/2 inch diameter metal disks iocsted|36 laches apart on a section of nominal 5-iach pipe. The pipe, with the mm applied, shall be connected In a horizontal position So a vlbcattoa machine. In this position, the materials shall be subjected to 730 vibrations per minute through an arc of 15 minutes with a radius of 3D inches, for a period of at least 96 hours. . 36 12 - t* % J JJ UXI/-X-2761C i 6.10 Simulative service test, - Pipe covering shall be applied to a section of nominal S-inca pipe. teWMb'a^tiM at the maximum temperature tor the respective grade tor 3D days, ' Then the pipe covering &haiy t examined. If the pipe covering is in satisfactory condition, it shall be applied and secured between two circular 9-1/2-toch diameter metal disks located 36 inches apart or a section of nominal 3*iach pipe. The pipe with the pipe'covering applied, .shall be connected in a vibration machine. Is this position, the pipe covering shall be subjected to 720 vibrations per minute through an arc of 15 minutes with a radius of 30 inches, for a period of at least 96 hours. 5. PREPARATION FOR DELIVERY 5.1 Packing. - 5.1.1 Level A.~ Pipe covering shall be packed to overseas type wood cleated fiberboard, nailed wood, wlreboand wood, fiber, wood cieaied paper overlaid, or wood cleated plywood boxes conforming to Specification PPP-B-691, PPP-B-621, PFP-B-58S (class 3), PPP-B-636 (class 3VMIL-B-10377 orPPP-B-601, respectively, at the option of the contractor. Shipping containers shall have .J\ * case liners conforming to Specification MiX-L*l0&473p6r3SaH oe ciosed and sealed in accordance with the appendix thereto. Case liners for boxes conforming to Specification PPP-B-630 may be omitted provided all Joints and corners of the boxes are sealed with minimum 1-1/2 inch wide tape conforming to Specifi cation PFP-T-76, Box closures and strapping shall be as specified in the applicable box specification or appendix thereto. The gross weight of wood mm! boxes shall not exceed 200 pounds; fiberboard boxes shall not exceed the weight limitations of the applicable box specification. 5. *2 Level B. - Pipe covering shall be packed to domestic type wood nleated flberbda^ hailed wood, wirebouad wood, wood cleated plywood, wood cleated paper overlaid or to class 2 fiber boxes conforming to Specifi cation PPP-B-6M, PPP-B-621, PPP-B-685, PPP-B-601, MTL-B-10377 or FPP-5-636, respectively, at the option of the contractor. Box closures shall be as specified to applicable box specification or appendix thereto. The gross weight of wood and wood-cleated boxes shall not exceed 200 pounds; fiberboard boxes shall not exceed the weight limitations of the applicable box specification. 37 13 MI2>I*2781C i 5,1.3 XevelC^ Pipe covering sbill be packed to containers of Use type, size and klncTeommocly usedtortbe purpose is a manner, which wiU Insure acceptance and safe deliver? at deBtloatton." Shipping containers shall comply with the Uniform Freight Classification Rules or other regulations as appUcable to the mode of transportation. 5.2 Marking. ~ m addition to anyispecial marking required by the contract, order, or herein* shipments shall be marked in accordance with Stand ard MIL-STD-129. 6. NOTES t 6,1 Ordering data. - Procurement documents should specify the following* (a) Title, number, and date of this specification. (b) Grade, and if applicable, class and type required (see 1.2). j (c) Nominal iron pipe sise (see 3j4. 8. (d) Nominal thickness (see 3.4.5J. (e) Whether the pipe covering shall be packed in accordance with the requirements for level A, B or C (see 5.1). S. "2 With respect to products r^q^ulmg i* -i - awards wilt beTnaric only for such products as have, prior to the time set * opwung bids, been tested aiid approved for inclusion Qualified Products l-*:sk Qi whether or not such products rave actually t*u I'sted t>y~ihai date, Th* Atten tion of the suppliers is called to -his reqtjiremcri, .**d manufacturers are urgc-i icarrange to have the products that theyipropo.';* Mfer to the Federal Govern ment tested for qualification, in order tiki they .*:<' be eligible to be awarded contracts or orders for the products cover-d or specification. The activity responsible for the qualified products Hai & m ws * the Bureau of Ships, department of the Navy, Washington 25, U C. . and information pertaining to* qualification of products may be obtained from that activity. MIL-I-2781C Notice, - When Govmomt drawings, specif!cations, or otter are uaoa lor any purpose otter than in mmcUoa with a definitely reiatea Governmart procurement operation, tteUnited Sates Gnvenunent thereby incurs no responsibility nor any obligationwteteoeeer; ate the tact ttet tte Government may have formulated, furnished, oor in any nr supplied tte said drawings, specifications, or otter data is not to te regarded by implication or otherwise as in any meaner licensing tte holder or asp otter person or corporation, or conveying any rights or permission to nmattEacture, use, or sell any patented invention that may In any eey to related thereto. Preparing activity: Navy - Bureau of Ships (Project 5&4C-C'X1) Custodians; Army - Corps of Engineers Navy - Bureau of Ships Air Force \ 4+ 31