Document o1GQmN7pbxrwVNNvej9EdKpR

> 001073 NV) nal Insulation Manufacturers Association i LSXINQTON AYBNUB-NBW YORK *7. K Y. December 3, 1962 MIMA stamdarp TO THE TECHNICAL Sc RESEARCH COMMITTEE Rock k Slag Section Glass Section Molded Section Re; NIMA Proposed Standard Gentleman; Attached for your perusal is the initial draft o "NIMA Standard Inorganic Thermal Insulation", This standard was asked to be developed by the Board ot Directors* Will you please send you comments and/or suggested changes to the N1MA office not later than January 1, 1963, This subject will be placed on the Agenda for the next T fe R Committee meeting. Sincerely yours JMBtHCL end. tIC 422167 P 0024 VW-05887 11.1,62 ' 001074 PROPOSED NTMA INORGANIC THERMAL INSULATION PUiUPCSE The purpose of this standard is to establish minimum specifications for insulating low temperature and heated surfaces with inorganic types of thermal insulation for guidance of manufacturers, distributors, contractors, engineers and users. SCOPE This standard coyera minimum physical requirements for amoaite asbestos, calcium silicate, diatomaccous earth, mineral fiber, cellular glass and magnesia thermal insulation in the form of pipe insulation, blocks or boards, cements, felts, blankets, loose and granulated, and industrial batts. It also includes standard sizes and standard facing materials, DEFINITIONS Compositions 1 Mineral Fibers - A generic term for all noa-metallic inorganic fibers. These fibers may be natural, such as asbestos., or may he manufactured such as rock, slag or glass, 2. 83ft Magnesia thermal Insulation is composed principally of basic magnesium carbonate with reinforcing mineral fiber. 3. Diatomaceous Silica thermal insulation is composed principally of diatomaceous earth with or without heat-resistant inorganic binder(s' and reinforcing mineral'fiber. 4. Calcium Silicate thermal insulation is composed principally of hydrous calcium silicate with reinforcing mineral fiber. 5. Cellular Glass thermal insulation is composed of glass processed by fusion, to form a homogeneous rigid mass of hermetically sealed cells. 6. Amosite Asbestos thermal insulation is composed principally of amoeife asbestos fiber with or without heat resistant inorganic binder and filler, ? Mineral Fiber thermal insulation is composed principally of fibers manufactured from mineral substances such as rock, slag or glass with or without binder. MC 422167 H 0025 001075 2 Forms 1. Pip insulation is thermal insulati*':*. suited lor application to cylindrical surfaces of pipe fend tubing* fa) Molded-type Pipe Insulation ie thermal insolation preformed in cylindrical, semi-cylindrical os* segmented sections to lit pipe and tubing, (b) Blanket-type Pipe Insulation ie flexible thermal insulation funisshed fiat in sizes to fit around pipe and tubing, 2. Block or Board Insulation is rigid thermal insulation preformed in rectangular units to fit fiat surfaces or curved surfaces of diameters above 33 Inches* 3. Insulating Cement is composed of a dry mixture of fibrous, powdery or granular materials which when mixed with water, applied as a plastic mass and dried in place, forms a monolithic thermal insulation* 4. Finishing Cement is composed of a dry mixture o fibrous, powdery or granular materials which when mixed with water and applied as a plastic mass to thermal insulation, dries to a smooth, hard, protect ive surface, 5. Insulating-Finishing Cement is a dry mixture of fibrous, powdery or granular materials which when mixed with water, applied as a plastic mass, dries to form a monolithic thermal insulation with a smooth, firm surface* 6. Loose Fill Insulation ie thermal insulation composed of a dry mixture of fibrous, powdery, or granular materials for installation between confining surfaces or as a top layer* 7. Blanket Insulation is flexible thermal insulation that can readily"be conformed to curved surfaces, and which is suitably bound together to provide units of substantial area for handling and application and which may he faced or reinforced with confining media* 8. Felt Insulation is semi-rigid or flexible thermal insulation normally furnished in flat sheets composed of mineral fibers with or without binder* HC 42217 P 0026 GENERAL REQUIREMENTS 3 001076 1, When tested as specified in rated as incombustible or fire retardent* , the insulation shall be 2, Temperature of Use - When tested as specified in at the intended use temperature, as agreed upon between the manufacturer and the purchaser, the insulation shall show no physical changes that will adversely affect its service qualities* 3* Workmanship The insulation shall not have visible defects that will adversely affect its service qualities* 4, Handleability - individual units of insulation shall be conetnc ted in such a manner as to permit transportation and installation as a unit* AMOSITE ASBESTOS The amosite asbestos thermal insulation shall be supplied as hollow cylindri cal shapes either whole or split in half lengthwise for application os standard sizes of pipe* Thicknesses available shall be in accordance with the manu facturer's standard sizes. When installed on pipe of specified size, sections shall fit snugly, and shall have tight longitudinal and circumferential joints* Physical Requirements - When tested as specified, the insulation shall conform to Table 1* TABLE 1 - PHYSICAL REQUIREMENTS, STANDARD SIZES AND DIMENSIONAL TOLERANCES OF AMOSITE ASBESTOS PIPE INSULATION Temperature limit, max*, (see par } 1200F Density, average, pcf (see par } Thermal conductivity laverage) Btu per hr eq ft F/in (see par ) At mean temperature 100 F 300 F 600 F 18 0. 32 0.42 0. *3 Linear shrinkage (length) after heat soaking, average, percent (see par ) 0.5 Standard Sizes Length Width Thickness 3ft 1 to 4 in. in UZ in. increments MC 422167 P nn 4 001077 Dimensional Tolerances The average measured length and thickness of any individual shape or segment of the insulation shall not differ from the manufacturers standard dimensions by more than the following: Length Thickness Nominal pipe size up to 24 in. Nominal pipe size o^er 24 in. 7z i/8 in, & 1/8 in. S 5/32 in, CALCIUM SILICATE Calcium silicate pipe insulation shall ho supplied either as hollow cylindrical shapes split in half lengthwise (in a plane including the cylindrical aids) or as curved segments. Thickness available shall be in accordance with the manufacturers standard sizes* When installed on pipe of specified size, sections shall have tight longitudinal and circumferential joints. Calcium silicate block-type thermal insulation shall be supplied in the form of flat or curved blocks as specified. Salcium silicate shall be supplied as insulating cement. Physical Requirements - When tested as specified the insulation shall conform to Table U* TABLE Et - PHYSICAL REQUIREMENTS, STANDARD SIZES AND DIMENSIONAL TOLERANCES OP CALCIUM SILICATE BLOCK, PIPE AND CEMENT INSULATION Pipe & Block Cement Temperature Limit, mux., (see par ) 1200 P 1200 F Density, average, pcf (see par ) 14 Thermal conductivity (average) (see par ) Btu per hr eq ft F/in At mean temperature - 300F 5G0F 700F 0.42 0. 54 0.63 0.80 Compressive strength, average, at Sfo deformation, psi,, block only (see par ) 60 c.tO MC 422167 .P 002$ linear shrinkage (length) after heat soaking* max.* percent (see par ) 001078 2.0 3,0 Volume change (shrinkage) upon drying, average* percent (see par ) 25 Dry covering capacity, average, sj ft Un in thickness per 100 lb of dry cement , 35 Standard Sizes Flat block - Flat block shall be furnished n a length of 36 in., a width of 6 in., and thickness from 1 to 4 in* in 1/2 in, increments* Flat block may also be furnished in a width of 12 in. in thickness from 1-1/2 to 4 in. in 1/2 in, increments* Curved block - Curved block may be furnished in a length of 36 in*, a width of approximately 6 in*, and curved to inside radii of over 16-1/2 in. Individual dimendons shall conform to those specified by the manufacturer. Pipe Length 3 ft Thickness 1 to 3 in, in 1/2 in* increments Thickness greater than 2 in, may be furnished in 2 layers. Individual dimensions shall conform to those specified by fee manufacturer. Dimensional Tolerances The average measured length, width and thickness shall not differ from the manufacturer's standard dimensions by more than the following? Length vadth Block 1/8 in. =2 1/8 in. P*pe 1/8 in. - Thickness sc 1/8 in. 1/8 in. CELLULAR GLASS Cellular glass pipe insulation shall be supplied as hollow cylindrical shapes in half section or segmental iorm. Thickness available eball be in accord ance with the manufacturer's standard sices* When installed on pipe of specified size, sections shall have tight longitudinal and circumferential joints* Cellular glass block insulation shall be supplied in the form of flat blocks. Physical Requircmenis - V/bon tooted as specified the insulation shall conform to Table XIL MC 422i6? B 00 6 001079 TABLE Til - PHYSICAL REQUIREMENTS, STANDARD SIZES, AND DIMENSIONAL TOLERANCES OF CELLULAR GLASS BLOCK AND PIPE INSULATION Temperature limit, max,, (see par ) 80OF Density, average, pet (se* par / Thermal conductivity (average) Btu per . hr sq ft F/iru (see par ) At mean temperature IOOF 0.41 200F 300F 0.55 0,67 Compressive strength, average, pal 100 (see par ) Linear Shrinkage (length after heat soaking, average, percent (see par ) 0.S Standard Sizes Block Size Thickness, in, "Width, in. 12 18 Length, in* 18 25 1-1/2, 1*3/4, 2, 2-1/2, 3, 4, 5, Z, 2-1/2, 3, 4, 5 Pipe Length Thickness 18 or 24 in. To ilt standard sizes of pipe Dimensional Tolerances The average measured length, width and thickness shall not differ from the manufacturer's standard dimensions by more than the following: Length Block 4 1/16 in, !?pe 1/16 in. mdth 4 uu>**. L Thickness -- 1/16 in, -- 1/16 in. DiATOMACEOUS .EARTH Diatomaceous earth pipe insulation shall be supplied either as hollow cylindrical shapes split in half lengthwise (in a plane including the cylindrical axis) or as curved segments. Thickness available shall be in accordance with the manufacturer's standard sizes. When installed on pipe of specified size, sections shall have tight longitudinal and circumferential joints. Dialertacecue earth block-type thermal insulation shall be supplied in the form of flat or curved blocks as specified. Diatomaceous earth shall he supplied as insulating cement. flC 422ter Ft 00JB 7 001080 Physical Requirements - When tested as specified the insulation chaU conform to Table IV# TABLE IV - PHYSICAL REQUIREMENTS, STANDARD SIZES AND DIMENSIONAL TOLERANCES OF DIATOMACEOU5 EARTH BLOCK, PIPE AND CEMENT INSULATION Temperature limit, max. {see par \ Density, average, pcf (see par } Thermal conductivity, average, Btu per hr sqft F/in. (see par J At mean temperature 500F 700F 900F Compressive strength, average, at 5% deformation, block only, psi (see par ) Linear shrinkage(length) after heat soaking, agerage, percent (see par ) Volume change (shrinkage) upon drying, average, percent (see par > Dry covering capacity, average, sq ft l in, in thickness per 100 lb of dry cement Block & Ripe 16C0F & 1900F 0.66 0. 70 0.74 0.70 0. 75 0.80 60 65 2.0 3.5 Cement 1900F o. as 0.90 1.00 25 5.0 30 35 Standard Sises* Flat block - Flat block shall be furnished In a length of 36 in., a width of 6 and 12 in,, and in thicknesses of from 1 to 4 in, in 1/2 in, increments Curved block - Curved block may befarmtsbed is~alength .of in,* a width of approximately 6 in,, and curved to inside radii of over 16-1/2 in. Individual dimensions shall conform to those specified by the manufacturer. Pipe Length Thickness 3 ft l to 3 in. in 1/2 in. increments. Thicknesses greater than 2 Jn. may be furnished in two layers. Individual dimensions shall cocform to those specified by the manufacturer. MC 422167 P 0021 I 8 001081 Dimensional Tolerances The average measured length, width, and thickness shall not differ from the manufacturer** standard dimensions by mere than the following: Length Thickness Block ?}<$ &Sw) Ul/Hoijrnu. Mpe ^ 1/8 ^/ 1/S in. 85? MAGNESIA. Eighty-five percent magnesia pipe insulation shall be supplied either as hollow cylindrical shapes split is half lengthwise fin a plane including the cylindrical axis) or as curved segments. Thickness available shall be in accordance with the manufacturer^ standard sizes* V/hen installed on pipe of specified size, sections shall have tight longitudinal and circum ferential joints. Eight-five percent magnesia block-type thermal insulation shall be supplied either fiat or curved as specified. Eighty-five percent magnesia shall be supplied as insulating cement* Physical Requirements - When tested as specified the insulation shall conform to Table V. TABLE V - PHYSICAL REQUIREMENTS, STANDARD SIZES, AND DIMENSIONAL TOLERANCES OF 85% MAGNESIA BLOCK, PIPE AND CEMENT INSULATION Block Sc Pipe Cement Temperature limit, max., {see par ) 60QF Density, average, pcf 13 Thermal conductivity, average, Btu per hr sq ft F/in. (see par ) At mean temperature 10OF 200F 300F 0,35 0* 39 0.44 0.50 0.55 0.60 Compressive strength, average, at 5% deformation, psi, block and cement only (see par 5 50 50 Linear shrinkage (length) after heat soaking, average, percent (see par ) 2.0 2.0 Volume change (shrinkage) upon drying, average, percent (see par ) Dry covering capacity, average, sq 30 ft, 1 in. in thickness per 100 lb of dry cement SO MC 422167 $ on 7 > ^ w W *wm Standard Sizes 001082 Flat Block - Flat Mock shall he furnished in a length of 36 in,, widths of 6 in. or 12 in., and a thickness of from 1 to 3 in, in 1/2 in, increments. Curved Block - Curved block shall be furnished in a length of 36 in,, a width of approxinately 6 in,, and curved to inside radii of over 16-I/21', Individual dimensions shall conform to those specified by the manufacturer, Pipe Length Thickness 3 ft 1 to 3 in. in 1/2 in, increments Thicknesses greater than 2 in, may be furnished in 2 layers. Individual dimensions shall conform to those specified by the manufacturer. Dimensional Tolerance* The average measured length, width and thickness shall not differ from the standard dimensions by more than the following: Length Width Thickness Block 2- 1/8 in* ^ 1/8 hu =* 1/8 hj. Pipe 1/8 in, ; =* 1/8 in, MINERAL FIBER Types end Classes - The mineral fiber insulation shall be of the following types end classes in accordance with its form and construction, its rigidity or flexibility determined in accordance with and Form l - Slacks and Boards Rigid Material Type X - Organic-bonded - for use up to 400 P Type 21 - Organic-bonded - for use up to TOO F Type III - Inorganic-bonded - for use up to 1800 F Form IX - Blankets and Felts - Flexible and Semi-Rigid Materials Type I - Metal-mesh Covered Blankets Class A - for use up to 1000 F Class B - for use up to 1200 F Type IX - Blankets, Resilient Flexible for use up to 400 P Type HI - Felts, Femi-Kigid - for uae up to 400 P Type IV - industrial Batts, Flexible - for use up to 1000 F Form OX - Pipe Insulations Type l - Molded - for use up to 370 F Type 12 - Blanket-Type Class A (Resilient, Flexible? - for use up to 700 F Class B (Metal-Mesh Covered) - for use up to 100" Class C (Metal-Mesh Covered).- for use up to 120OF PfC 422167 ft 0033 10 001083 Form I - Blocks and Boards - Rigid Materiala Physical Requirements - When tested as specified, the blocks end boards shall condom to Table VI, TABUS VI - PHYSICAL REQUIREMENTS, STANDARD SIZES AND DIMENSIONAL TOLERANCES OP MINERAL PEER BLOCKS AND BOARDS (FORM 1) . Properties Type I Type II Type m Density, {average)* lb per cu ft (see par ) Compressive strength, (average), 12 12 25 load to produce a deformation in thickness of 10 percent, taking the original thickness tinder a preload of lb pe r sq ft Load lb pet sq ft (see par ) Breaking strength, (average) lb per in, of thickness for a 6 in, wide specimen (see par ) Linear shrinkage after heat soaking (average), percent Thermal conductivity (average), Btu in, /hr sq ft deg Fahr (see par * * * * 2,5 36 30 1440 * 15 * 4,0 ) At mean temperature 100 0,28 200 0,33 300 0.42 700 900 *nct applicable Standard Sizes Length, in. 18,24,-30*-36,^3 60 Width, in. 6, 12, *5,1** 24,30 0.2? 0.31 0.33 0.45 0.70 0. 85 Thickness, in. 1 to 5 in. in 1/2 da. incre ments Various sires are available from manufacturers Dimensional tolerances (all types) Length zk 1/8 in, vridtb 4 */** Thickness -- 1/8 in. fIC 422} 7. P 0934 001084 32 Form 11 - Blankets and Felts - Flexible and Serai-Rigid Materials Type I - Metal-Mesh Covered Blankets Blankets (Metal-Mesh Covered) shall be a flexible or semi-rigid insulation fee par ) covered by flexible metal-mesh facings on one or two sides and held together by ties extending through from one face to the other. Physical Requirements - When tested as specified the metal-mesh covered blankets shall conform to the physical requirements shown in Table VIE, TABLE VII - PHYSICAL REQUIREMENTS, STANDARD SIZES AND DIMENSIONAL TOLERANCES OF MINERAL FIBER METAL MESH COVERED BLANKETS {Form IT, Type $ Density {average), without facings (see par, ) Class A 8 & 12 Class B 12 Thermal conductivity {average), Btu in. /hr sq ft deg Fahr (see par ) At mean temperature 100 200 300 500 8 pcf 0.27 0,31 0.38 12 pcf 0.35* 0.47 0.61 0.25 0. 32 0.40 Standard Sizes Length Width Thickness All Classes 48, 96 in, 24 1 to 6 in, in 1/2 in. increments .Dimensional Tolerances Length Width Thickness All Claeses - inn*. ** - 0 in. ** - Oin. *# An excess in all dimensions will be permitted. Facing Materials - Standard types of metal fabrics used as facings shall be: 1, Wire mesh, 1 in. galvanized No. 18 or 20 gage wire. 2, Expanded metal lath, (copper bearings, not galvanized) having diamond shaped openings, weighing 1.8 lb per sq yd, painted. 3, Expanded metal lath, (copper bearing, not galvanised) having diamone shaped openings weighing 2. 5 ib per sq yd, pafeted. fIC 42216? 0 0035 12 001085 Other types or compositions of facings required for rigidity, temperature and/or corrosion resistance {such as monel, stainless steel, etc*,) may be specified. On unite with facings on two sides the metal fabrics may be of the same type or any combination of two types, as 'specified. Type II - Resilient, Flexible Blankets Blankets shall be resilient flexible {see par* ) insulation with binder added which may be plain or faced as e pecified and normally furnished in rolls and/or cut pieces. The blankets are provided in two types of fibers, fine and textile, and their characteristics are shown in Table VIII, Density and Density Tolerance - Density shall be specified as one (or more) of the nominal densities listed in Table VIII, When tested in accordance with the density at nominal thickness shall be as specified within a tolerance of plus or minus 20 percent, TABLE VIII - NOMINAL DENSITIES OF MINERAL FIBER INSULATION (FINE FIBER AND TEXTILE FIBER) Form H, Type ll) Designation B~1 B-2 B-3 304 B-5 B-6 Nominal Density 0, 65 pounds per cubic foot 0,76 ' it ii II 1.0 h IT 1! 2.5 it II n 2,0 " i 1* it 3*0 <i If it Physical Requirements - V/hen tested as specified the resilient flexible blankets shall conform to Table EX, TABLE IX - PHYSICAL REQUIREMENTS - STANDA'RD iZ&5 AND DIMENSIONAL TOLERANCES OF MINERAL FIBER RESILIENT FLEXIBLE BLANKETS {Fine Fiber and Textile Fiber) (Form H, Type II) Thermal Conductivity (average), Btu in. /hr sq ft deg Fahr {see Par ) Fin Fiber At mean temperature 7$ 100 200 Textile Fiber 75 100 200 B-l B-2 B-3 B-4 B-5 & B-6 0*31 0, 30 0.28 0.26 0,25 * 0,34 0.32 0. 30 0. 28 0.26 0.47 0.43 0.39 0. 35 0. 32 0. 34 0. 33 0.32 0. 30 0. 3? 0.36 0, 35 0* 32 0,53 0.52 0,50 0.43 0.25 0,26 0.35 nC 422167 G OO J6 Standard Sizes Length Width Thickness 13 001086 All designations 25, 50, 100, 200 ft rolls* 24, 36, 40, 72 in. 1/2 to 6 leu in 1/2 in. increments Dimensional Tolerances Length Width Thickness All Designations - 0 in. ** - 1/6 in. ** * 1/8 in, ** * Rolls may contain more than one piece, but no piece shall be less than 10 feet in length, Rool length will be dependent on blanket thickness. Maximum thicknesses not available in maximum densities, ** An excess in all dimensions will be permitted. Type IE - Felts Semi-Rigid Felt shall be semi-rigid (see par ) thermal insulation with binder added, which may be plain or faced as specified, and furnished in flat sheets or cut pieces. Density - Nominal densities as specified can be obtained from the manufactur era. Density Tolerance - When tested as specified in the density toler ance shall be -- 1 pound per cubic foot or 20 percent whichever is smaller c the manufacturers nominal density. Physical Requirements - hen tested as specified the felts shall conform to Table X. TABLE X - PHYSICAL-RECU1RE MENTS, STANDARD SIZES AND DIMENSIONAL TOLERANCES OP MINERAL FIBER FELT INSULATION (Form E, Type III) Thermal conductivity (average), Btu in. /hr sqft deg Fahr, (see par ) At mean temperature 75 100 200 Ncminal Density Under 6 pcf 6 pel and over 0. 30 0. 32 0.44 0. 29 0.30 0.36 Standard Sizes Length Width Thickness 30, <8, 60 in. 12, 15, 24, 30 in. 1 to 4 in, in 1/2 in, increments MC 422167 R OO Dimensional Tolerances Length Width Thickness 14 - 0 in, * - 1/8 in. * - 1/8 in, * 001087 * An excess in all dimensions will he permitted Type IV - Industrial Batts - Flexible Construction - Industrial batts shall be flexible (see par. without binder added, and furnished in pieces or rolls. ) with or Physical Requirements - When tested as specified the industrial batts shall conform to the physical requirements shown in Table 2CX TABU: XI- PHYSICAL RECU2&BMBNT3, STANDARD SIZES AND DIMENSIONAL TOLERANCES OF MINERAL FIBER INDUSTRIAL BATT INSULATION (Form XI, Type IV) Density (average), lb per cu ft (see par. ) IZ Thermal conductivity (average), Btu in. /hr sq ft deg Fahr. (see par ) At mean temperature 100 200 O. 31 0.38 300 O. 46 Standard Sizes Length 46, <J6 in. Width Thickness 24 in, 1 to 3 in. in 1/2 in. increments Dimensional Tolerances Length Width Thickness - 0 in. * - 0 in. * - i/e in. * * An excess in all dimensions will be permitted. Form HI - Pipe Insulation Type I - Molded Construction - Molded-Type Pipe Insulation shall he made from mineral fibers and a suitable binder, molded into sections in the form of hollow cylinders split lengthwise on one or both sides of the cylindrical axis .for application on standard sizes td piping or tubing. Thicknesses available for various pipe sizes shall be in accordance with the manufacturer*6 rrc 007$ 001088 15 standard sizes. When installed on pip of specified size, sections shall fit snugly and shall have a tight longitudinal and circumferential joints. Physical Requirements - When tested as specified the moldeatype pipe insulation shall conform to Table Xn. TABLE XH - PHYSICAL REO UIRE MEKTS, STANDARD SIZES AND DIMENSIONAL TOLERANCES CO* MINERAL FIBER MOLDEDTYPE PIPE INSULATION (Dorm El, Type I) Density (average) lb per cu ft zk 10 percent of the manufacturer's standard nominal densities, but the density shall not exceed 20,0 pounds per cubic foot. Thermal conductivity (agerage) Stu in. / hr sq ft deg Fahr, (see At mean temperature "k" 75 0.26 100 0. 27 200 0. so ) Standard Sizes Length Width Thickness, nominal 3 ft to fit standard pipe sizes 1/2, 1, 1-1/2, 2 in. and Dimensional Tolerances Length Width Thickness SC 1/Sin. zk 3/32 in. * Thicknesses greater than 2 in. may be furnished in single or multiple layers. Type 12 - Blankt- Type Claes A - Resilient - Flexible Construction - Resilient flexible pipe insulation sliall be insulation with binder added, which may be plain or faced. The insulation shall be furnished in rolls or flat pieces to fit snugly with tight longitudinal and circumferential joints when installed on pipe of the specified size. Density Tolerance - When tested as specified in , the density shall be sc 20 percent of the nominal density as determined by dimensions and weight of a full size piece c material as received. Physical Requirements - When tested as specified the resilient flexible pipe insulation shall conform to the physical requirements shown in Table XIII. MC 422267 n 0029 001089 16 Class B &c Class C Metal*Mesh Covered Blanket-type pipe insulation (metal mesh covered) shall be a thermal insulation with a metal fabric facing on one or two faces and held together by heat resistant ties extending through from one side to the other. The insulation shall be furnished in flat units, and when installed on pipes of specified size shall fit snugly with tight longitudinal and circumferential joints. Physical Requirements - t'Tten tested ae specified the blanket-type metalmesh covered pipe insulation {Class B and Class C) shall conform to the physical requirements shown in Table XIV, TABLE xm - PHYSICAL REQUIREMENTS, STANDARD SIZES AND DIMENSIONAL TOLERANCES O.T MINERAL FIBER RESILIENT FLEXIBLE PIPE INSULATION CLASS A (Form HI, Type II) Density {average), lb per cu ft. (see par ) 3 Thermal conductivity (average), Btu in,/hr sq ft deg Fahr. (see par. > At mean temperature Fine Fiber 75 0.2$ 100 0.2S 200 0. 35 TextSe Fiber 0,30 0. 32 0.43 Standard Sizes Length Width Thickness 3 ft 3 ft To fit standard pipe sizes 3 to 4 in. in 1/2 in, increments Dimensional Tolerances Length Thickness - 0 in, * - i/8 ixu * - 0 in, * - 1/8 in, * * An excess in all dimensions will be permitted. TABLE 'AN - PHYSICAL REQUIREMENTS STANDARD SIEES AND DIMENSIONAL TOLERANCES O7 MINERAL FIBER BLANKET-TYPE METAC MESH COVERED PIPE INSULATION CLASS B lc CLASS C {Form HI, TYPE 1$ Class B Class C Density (Average), lb par cu t (see par ) J2 S & 12 Thermal conductivity (average) Btu in. /hr sqft deg Fahr (see par At mean temperature 100 ) 0.25 Nom. Dero 8 pcf 12 pcf 0, 27 0, 35 MC 422167.Q 0040 001090 17 Z00 0.32 0.31 300 0.40 0.38 0.47 500 0.61 Standard Sizee length Width Thickness Class B & Class C 2 ft To fit standard pipe sizes from 3" op 1 to 4 in. in 1/2 In. increments Dimensional Tolerances Length Thickness - 0 in.* - 0 in.* * An excess in all dimensions will be permitted Facing Materials - Standard types of metal fabrics used as facings shall be; 1. V/erven wire mesh, 1 in. galvanized, No. 18 or 20 gage wire* 2. Expanded metal lath, (copper bearing, not galvanised} having diamond shaped openings, weighing 1. 8 lb per sq yd, painted* 3. Expanded metal lath, (copper bearing, not galvanised} having diamond shaped openings, weighing 2.5 lb per sqyd, painted. Other types or compositions offerings required for temperature and/or corrosion resistance (such as monel or stainless steel) may be specified* When two facings are required, the facings of each unit of metal-meah blanket insolation may be the same type, or any combination c# two types* SAMPLING, INSPECTION AND TEST PROCEDURES 1 Sampling The insulation shall be sampled for the purpose of testa according to ASTM Designation C 390. When as agreed by the purchaser and the manufacturer or supplier, inspection of the material may bo made at either the point of shipment or point of delivery. 2 Action in case of failure - A rejected lot may be resubmitted for inspection by the manufacturer after reworking the entire lot as to remove or correct all non conforming material. 3 Test Procedure - AU facing material shall be removed before testing unless otherwise agreed to as & basis of purchase. 3,1 Rigidity - A piece of insulation 32 inches long, between d and 24 inches wide and 1 inch thick shall be placed on two horizontal, parallel, 1/2 inch pipe supports spaced 30 inches apart. The sag at the center of the span shall be measured from a straight line connecting two points on the surface directly above the supports. fiC 42216? P 0041 18 001091 Material showing a sag not greater than l/Z inch shall be classed as rigid* Material showing a sag greater than 1/2 inch but which is not flexible (see ) shall be classed as semi-rigid* 3. 2 Flexibility -A12"xl2" piece of the insulation shall be bent over a 1/2 inch iron pipe through an angle of 90 degrees, then released* Material whose outer surface shows no visible rupture when bent shall be classed as flexible* Material whose outer surface shows no visible rupture when bent, and upon release springs back to its original form and dimensions shall be classed as resilient, flexible* 3* 3 Determination of density and dimensions shall be in accordance with ASTM Designation C 303 for Form 1 materials, ASTM Designation C 302 for Form lit, Type I materials and ASTM Designation C 167 for Form H and Form HI, Type 11 materials. 3. 4 Combustibility {to be written as per Section VI of CS 131) 3.5 Thermal Conductivity - Determination of thermal conductivity shall 6e in accordance with ASTM Designation C 177 for flat material or ASTM Designation C 335 for pipe material. 3.6 Compressive Strength - Determination of compressive strength shall be In accordance with ASTM Designation C 165* 3. 7 Breaking Strength - Determination of breaking strength shall he in accordance with ASTM Designation C 203, with the following exception: Place the bearing bars 1/2 by 1 in. on top of the specified cylindrical bearing edges, with the 1 in. surface in contact with the specimens, 3.8 Temperature R*roletance - Determination n temperature resistance shall be in accordance with ASTM Designation C 411* 3.9 Linear Shrinkage - Determination of linear shrinkage shall be in accordance with ASTM Designation C 356, 3.10 Volume change Upon Drying - Determination of volume change upon drying shall be in accordance with ASTM Designation C 166*3 3. 11 Dry Covering Strength - Determination of dry covering capacity shall be in accordance with ASTM Designation C 166, tic 4221 cr n 0042 001092 19 T?REPARATION FOR DELIVERY Packaging and Marking - Unless otherwise agreed or specified between the purchaser and the manufacturer or supplier, the insulating material shall be packed in the manufacturer's standard commercial containers. Unless otherwise specified container shall be marked with supplier's name and designation, form type, class, alee, thickness and quantity of material contained* Ordering Data - The form, type, quantity, class, sizes, thickness, facing (a) and attachments if any, of the insulating material suited to the conditions of intended service shall be specified by the purchaser in the invitation for bids or order. (a) Other than minimum standard weights of canvas jacketing for pipe insulation must be specified when required. MC 4C2IS7 P 004 10/8/62 001094 PROPOSED SPECIFICATION for CALCIUM SILICATE BLOCK AND PEPS THERMAL INSULATION (ASTU C-000} SCOPE I. Tbssc specifications corar th* composition, sizes, dimensions and physical properties of calcium silicate block and pipe thermal insulation intended for use on surfaces operating at temperatures up to 1200 F. For specific applications, the actual temperature limit shall be agreed upon bet ween the mawjfacturer and tho purchaser* DEFINITIONS2 3 4 2. The Definitions of Terms Relating to Thermal Insulating Materials (ASTM Designation C 168) shall b* considered ae applying to tho terms used in these specifications. DESCRIPTION 3, (a) Composition - Calcium silicate thermal insulation shall be composed principally of hydrous calcium silicate with reinforcing mineral fiber. (b) Jackets - Jackets, where required for pipe insulation, shall be specified. (c) Accessories - Bands, seat stripe, etc., for pipe insulation shall be supplied when and as specified by the purchaser, PHYSICAL REQUIREMENTS 4. The insulation shall conform to tho following physical requirement) Density (average) max., lb per cu ft Thermal conductivity (average) max,, Btu In. per hr aq ft deg Tahti At mean temperature of 300 F At mean temperature of 500 F At mean temperature of 7CG F SOO $06 7QO Compressive strength (average) min., at 5 percent deformation, pci (block only) Dry Wet (After 16 hr immersion In water) . Co ,CS' >70 14.0 0. 50 0,60 +0r rr 0.71 ,f 60,0 25.0 MC 4221 7 Pi 0044 z 001095 Flexural strength (average) min. ps4. Linear shrinkage (length)(average) nax. percent after heat soaking (c) 2.0 (a) The average flexural strength in pounds per square inch shall be nurneriealiy equal io three times Use density in pounds per cubic foot* but not less than 35 psi, STANDARD SHAPES, SZT^S AND DIMENSIONS 5. (a) Calcium silicate block-type thermal insulation shall be supplied in the form o flat or curved blocks aa specified. i. Standard sizes of the tyre uisulaMon shall bo as follows: Flat block - Flat b.V-u shall be furnished in, a length cf 36 in. a width of 5 in, thickness from 1 to 4 in. in 1/2 in. increments. Flat block may also be furnished in a width of 12 in. in thickness fr-m 1-1/Z to 4 in. in 1/2 in. increment#. Curved block - Cu-vod block may be famished in a length of 36 in,, a width of app:-*c,xiroatoly 6 in., and curved to inside radii of over 16-1/2 in. Individual dimensions shall conform to those specified by the manufacturer, (b) Calcium silicate pipe insulation shall be supplied either as hollow cylindrical shapes split in half lengthwisje {in a hi me including the cylindrical axis) or as curved vomerts> The pipe insulation shall bo foxriV;vi in sections or segments in a length <& 36 n. to fit standard sizes of pipe aud tubing, and in nominal thick nesses of from 1 to 3 in, in 1/2 in. increments. Thicknesses greater than 2 hi. may he furnished in l Ivors. Individual dimensions shall conform to those specified by the manufacturer. DIMENSIONAL TOLERANCES 6. The average measured length, width and thickness shall not differ from the manufacturer's standard dimensions by more than the following: Length Width" Thickness Block l/8in, l/Sin. sfe 1/8 in, Pipe /* 1/8 in. ---- if- 1/8 in. WORKMANSHIP 7. Since some requirements c.* ;'\:s material are not easily specified by a numerical value, the insulation shall not have visible defects that will adversely affect its service qualities. MC 422167 P 0045 SAMPLING - 3. 001096 6. The insulation shall be sampled t:r :.he purpose of tests in accordance with ASTM 2>esignatzon;C 390, METHODS OF TEST 9, The properties enumerated in fh:;sc specifications shall be determined in accordance with the following methods: (a) Density - Block insulation - ASTM C 303 Pipe insulation - ASTM C 302 (b) Thermal Conductivity - 3lock insulation - ASTM Cl?? insulation - ASTM C 335 (c) Linear Shrinkage Afto* & *<t Soaking - ASTM C 356, the linear shrinkage shall he determined at the manufacturer's recommended temperature limit, (d) Flexural Strength - Block insulation - ASTM C 203 Pipe insulation - ASTM C 446 (e) Compressive Strength - Block insulation only, ASTM C 165 PACKAGING AND MARKING 10, (a) Packaging - Unless otherwise agrees u* su-weified between the purchaser and the manufacturer or supplier, mineral fiber molded^type pipe insulation shall he packed in the m&magcturer's standard commercial containers, (b) Marking - Unless otherwise specified each container shall be plainlymarked with the manufacturer's name, the name, class quanity, nominal thickness, backet and accessories if any, of the material in the container, INSPECTION AND REJECTION U,(af Inspection - When agreed by the purchaser and the manufacturer ot supplier, inspection of the material shall be made at either the point of shipment or the point of delivery, Rejection - If the averages o*.' :he test data obtained on the pieces tested fail to conform to the requir' .^ents of this specification* rejection may be mads in accordance with th* following procedure* il) A second sample from il j 'one lot shall be taken, prepared and tested. The results of :mo retest shall be averaged with the results of the original test to determine compliance with this specification. tIC 42216?. ft 0046 < 001097 (b) Rejection - If the averages of the test data obtained the pieces tested fsa! to conform to the physical recairswats, standard shapes, sizes, dimensions and dimensional tolerances of this specification, rejection may fcc made in accordance with the foU<r>'ing p^ncadur.*; (1) A second sample from th? let shall be taVon, prepared and tested* The results of th* ratefit shall be ave raped with 15 results of the original test*to determine compliance with this specification, (2) Upon retest as described ir. (1), failure to conform to this specification shall constitute grennda for rejections* (3) In case of rejection, 'h* manufacturer or supplier shall have the right to rainsn* t *.>rejected shaipment and resubmit the lot after removal c i? S: portion of the shipment n conform ing to the specified rc'jnli^'ner.t. Mr 422167 Q 004 001098 January 29, 1963 TO: Members of NfHA Technical & Research Cowwttee - Molded Section SUBJECT: Detailed Agenda For February 2), 1963 Meeting This will augment Jack Barnhart's January 7, 19*3 notice of the NlHA Technical and Research Cownlttee meeting being held at Che $horeham Hotel In Washing ton, D.C., February 2), 1963. 1. Recommended Practice for Determining CD's of Thermal Insulation for Tubes. (This is a carryover from last September 18th meeting.) Please note attached memo from V. t. Hiller, dated January 28th, *----- --. tr'" and come prepared to take appropriate action. 2. ,(Kn Values, ASHRAE Guide. NiKA sent communication to members -- V October 29, 1962. teeter Ballot ceiled for by November 3$th. P/e. stir. 3. MiM-2781 D and Hit-l-2819 0. Please refer to following NIKA Communications: December ) 2, 1962 to Chi)cote^ December 14, 1962 to NIMA T l R Coen*it tee members.'"'' December 14, 1962 to NlHA T DR Committee members with letter ballot. December 17, 1962 to Chi!cote A'l's**o*,, please f1 ind attach--ed- a- c-orpy/ o-f -ie--tt-e-.r....f.r.o..m.....V. . -U- Miller to 3arnhart dated .January 15, J963, for your information, Desired s' 'ommitree action should be decided * -----------fc 4. Standard Facings for Pipe Insulation (including Performance __ Standards). See Barnhart's letter to cownittee dated October 17, " 1962, I really don't know background for this. By this communica tion ( am asking Jack Barnhart, and any of you committee members, to furnish more information for our February 21st meeting so wa can take appropriate action. 5. NIHA Standards (See Barnhart's communication dated December 3/ *" ?g62 which requested corsn/tieo reply by January }, 1963). I a** asking Jack to ha%$e the results of committee answers tabulated for us by February 21st meeting, or if possible, circulated before then so we can study nwnrHs end 'd-i^cu^s them -at the <aes.ti.Ag. New items to bo added to our agenda include; 6. Calcium Silicate in Nuclear Reactors (See Barnhart's January 17th -- ^ commgnication). 7. Chart "Heat Transmission Vs. Surface Resistance for Flat Cylindrical Surfaces*'. See NIHA's October 2$, 1962 letter which called for answers by December I, 1962. I am asking Barnhart to report results of this action for our February 2!st meeting. / rfC 4221*7 P 0048