F683-14_Standard_Practice_for__Selection_and_Application_of_Thermal_Insulation_for_Piping___and_Machinery.pdf

Designation: F683 − 14 An American National Standard

Standard Practice for Selection and Application of Thermal Insulation for Piping and Machinery1

This standard is issued under the fixed designation F683; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.

This standard has been approved for use by agencies of the U.S. Department of Defense.

1. Scope

1.1 This practice provides guidance in the selection of types and thicknesses of thermal insulation materials for piping, machinery, and equipment for nonnuclear shipboard applica-tions. Methods and materials for installation, including lagging, are also detailed.

1.2 Supplemental requirements and exceptions to the re-

quirements discussed herein for ships of the U.S. Navy are included in Supplementary Requirements S1.

1.3 The values stated in inch-pound units are to be regarded

as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 This standard does not purport to address all of the

safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro-priate safety, health and environmental practices and deter-mine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accor-

dance with internationally recognized principles on standard-ization established in the Decision on Principles for the Development of International Standards, Guides and Recom-mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents2

2.1 ASTM Standards:3

A167 Specification for Stainless and Heat-Resisting

Chromium-Nickel Steel Plate, Sheet, and Strip (With-drawn 2014)4

A653/A653M Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

B209 Specification for Aluminum and Aluminum-Alloy Sheet and Plate

B209M Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)

C168 Terminology Relating to Thermal Insulation C195 Specification for Mineral Fiber Thermal Insulating

Cement C449/C449M Specification for Mineral Fiber Hydraulic-

Setting Thermal Insulating and Finishing Cement C533 Specification for Calcium Silicate Block and Pipe

Thermal Insulation C534 Specification for Preformed Flexible Elastomeric Cel-lular Thermal Insulation in Sheet and Tubular Form C547 Specification for Mineral Fiber Pipe Insulation C552 Specification for Cellular Glass Thermal Insulation C553 Specification for Mineral Fiber Blanket Thermal Insu-lation for Commercial and Industrial Applications C610 Specification for Molded Expanded Perlite Block and

Pipe Thermal Insulation C612 Specification for Mineral Fiber Block and Board

Thermal Insulation C680 Practice for Estimate of the Heat Gain or Loss and the

Surface Temperatures of Insulated Flat, Cylindrical, and Spherical Systems by Use of Computer Programs

C892 Specification for High-Temperature Fiber Blanket Thermal Insulation

C1482 Specification for Polyimide Flexible Cellular Ther-mal and Sound Absorbing Insulation

D962 Specification for Aluminum Powder and Paste Pig-ments for Paints

F1138 Specification for Spray Shields for Mechanical Joints

1 This practice is under the jurisdiction of ASTM Committee F25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.02 on Insulation/Processes.

Current edition approved Aug. 1, 2014. Published December 2014. Originally approved in 1980. Last previous edition approved in 2010 as F683 – 10. DOI:

10.1520/F0683-14.

2 The latest revision of all referenced documents shall apply.

3 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards volume information, refer to the standard’s Document Summary page on the ASTM website.

4 The last approved version of this historical standard is referenced on www.astm.org.

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.

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2.2 Federal Specifications:5

HH-P-31 Packing and Lagging Material, Fibrous Glass Me-tallic and Plain Cloth and Tape

TT-P-28 Paint, Aluminum, Heat Resisting (1200°F)

2.3 Military Specifications:5

MIL–PRF–24596 Coating Compounds, Nonflaming, Fire- Protective (Metric)

DoD-E-24607 Enamel, Interior, Nonflaming (Dry), Chlori-nated Alkyd Resin, Semigloss (Metric)

DoD-I-24688 Type I, Insulation, Polyimide, Sheet and Tube MIL-A-3316 Adhesive, Fire-Resistant, Thermal Insulation MIL-A-24179 Adhesive, Flexible, Unicellular-Plastic, Ther-mal Insulation MIL-C-2861 Cement Insulation, High Temperature MIL-C-19565 Coating Compounds, Thermal Insulation Pipe

Covering—Fire and Water-Resistant Vapor Barrier and Weather Resistant

MIL-C-20079 Cloth, Glass, Tape, Textile Glass and Thread, Glass

MIL-C-22395 Compound, End Sealing, Thermal Insulation Pipe Covering—Fire, Water, and Weather Resistant

MIL-DTL-24441 Paint, Epoxy-Polyamide, Green Primer, Formula 150, Type III

MIL-I-22023 Insulation Felt, Thermal and Sound Absorbing Felt, Fibrous Glass, Flexible

MIL-I-2781 Insulation, Pipe, Thermal MIL-PRF-2818 Insulation Blanket, Thermal MIL-PRF-2819 Insulation, Block, Thermal MIL-I-16411 Insulation, Felt, Thermal, Glass Fiber MIL-PRF-22344 Insulation, Pipe, Thermal MIL-P-15280 Plastic Material, Unicellular (Sheets and

Tubes) MIL-PRF-32161 Insulation, High Temperature Fire

Protection, Thermal and Acoustic MIL-STD-769 Thermal Insulation Requirements for Ma-chinery and Piping MIL-STD-2118 Trap, Steam, Angle, Thermostatic

2.4 Other Documents:

Title 46 Code of Federal Regulations (CFR), Shipping (Parts

164.009 and 164.012)5

EB 4013 Anti-Sweat and Refrigerant Insulation (Sheet and Tubes)6

USCG Type Approval 164.109 IMO FTP Code Annex 1, Part 17

USCG Type Approval 164.112 IMO FTP Code Annex 1, Parts 2 and 57

2.5 Drawings, NAVSHIP:

803-5184182 Passive Fire Protection Insulation5

804-5959214 Piping Insulation, Installation Details8

804-5959212 Machinery Insulation, Installation Details5

2.6 NAVSEA:

Naval Ships Technical Manual, Chapter 635—Thermal, Fire, and Acoustic Insulation8

3. Terminology

3.1 Definitions—For definitions of terms relating to insulat-ing materials used in this practice, refer to Terminology C168.

4. Materials and Manufacture

4.1 Insulation and Lagging Material Specifications, as

listed in Tables 1-17, describe those materials that are intended for use in the indicated temperature ranges. The specifications and requirements outlined herein are not intended to prevent the use of new test methods or materials, provided that sufficient technical data is submitted to demonstrate that the proposed test method or material is equivalent in quality, effectiveness, durability, and safety to that prescribed by this practice.

5. General Requirements

5.1 Piping, including valves, fittings, and flanges conveying vapors, gases, or liquids that attain temperatures outside the range from 55 to 125°F (13 to 52°C) during normal operation, shall be insulated except as otherwise stated herein.

5.2 The insulation thicknesses specified in this practice are designed to maintain the surface temperature at or below 125°F (52°C) for fluid temperatures up to 650°F (343°C) with an ambient temperature of 85°F (29°C). For fluid temperatures above 650°F, the surface will be maintained at a maximum of 133°F (56°C).

5.2.1 Insulation thicknesses have been calculated in accor-

dance with the computer programs in Practice C680.

5.3 Piping and units of equipment with designated internal

temperatures of 300°F (149°C) and over shall be insulated from their supports or the supports insulated from the struc-tures to which they are attached where the heat transmitted is objectionable on the opposite side of the structure.

5.4 Insulated piping passing through accommodation, service, and control spaces must be covered with approved noncombustible materials, which meet 46 CFR, Sections

164.009 and 164.012, or USCG Type Approval 164.109 and

164.112 as issued by the USCG. Elastomeric foam rubber insulation shall not be used in these spaces.

5.5 Special consideration shall be given to the insulation of integral piping supplied with and mounted on equipment or machinery. In these cases, alternative materials and methods of installation shall be considered provided that they comply with the performance requirements of this practice.

5.6 Minimum insulation requirements have not been estab-

lished for those surfaces or applications in which insulations had not been specified in past practices. In effect, the following surfaces are excluded from insulation requirements:

5.6.1 Surfaces where application of insulation will affect

proper operation.

5.6.2 Equipment, components, and systems designed for the

dispersion of heat.

5 Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:// dodssp.daps.dla.mil.

6 Available from General Dynamics, Electric Boat Corp., 75 Eastern Point Rd., Groton, CT 06340, http://www.gdeb.com.

7 Available from International Maritime Organization, 4, Albert Embankment, London, SE1 7SR, United Kingdom, http://www.imo.org/Pages/home.aspx.

8 Available from Naval Logistics Library, St. Louis, MO or on-line at http:// nll.ahf.nmci.navy.mil.

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5.6.3 Thermostatic steam traps and 24 in. (620 mm) of

piping upstream of traps, which shall not be insulated. When located in areas in which personnel protection is required, expanded metal shields or multilayer glass cloth shall be provided.

5.6.4 Mechanical joints exposed to sub-atmospheric pres-

sures and those included in the fuel oil service piping from heaters to burners.

5.6.5 Fuel oil piping between headers and burners.

5.6.6 Piping above 125°F (52°C) in bilges, not within

watertight enclosures.

5.6.7 Piping in locations in which sweating and resultant

rust is not objectionable such as voids, bilges, and shaft alleys, plus plumbing fixtures and associated supply and drain piping immediately adjacent thereto.

5.6.8 Dead-end hot water piping 3⁄8 in. (10 mm) and smaller.

5.6.9 Pressure-gage piping.

5.6.10 Soot-blower valve units and soot-blower flanges.

5.6.11 Piping in voids and cofferdams except where omit-

ting insulation is detrimental to system operation, such as catapult steam.

5.6.12 Safety valve bodies, springs, and lifting gear.

5.6.13 Piping over shower stalls and behind and under

lavatories.

5.6.14 Valves or flanges in the collection holding tank

(CHT) system.

5.7 Higher-temperature-type insulations are capable of be-

ing used where lower-temperature-type insulations are specified, provided that they are satisfactory in all other respects.

5.8 In “high traffic” locations in which the completed

insulation and lagging is liable to abuse, such as shipping, unshipping, and maintenance areas, protective sheet metal lagging shall be installed. Where metal lagging is required, any of the materials listed in Table 13 are acceptable, except for

TABLE 1 Insulation and Lagging Materials for Pipe, Tubing, and Fittings Used for Interior Piping SystemsA,B

Temperature Range °F (°C)

Insulation Specification Insulation CoveringC Specification

−20 to +40 (−29 to +4) cellular glass C552, Type II woven glass fiber MIL-C-20079, Type I, Classes 3 through 9 sheet steel galvanized commercial polyimide foamD C1482, Type I, with vapor retarder woven glass fiber MIL-C-20079, Type I, Classes

3 through 9 elastomeric foam rubberA MIL-P-15280, Form T

EB 4013

C534, Type I woven glass fiber MIL-C-20079, Type I, Classes 3 through 9

41 to 125 (5 to 51) cellular glass C552, Type II woven glass fiber MIL-C-20079, Type I, Classes 3 through 9 sheet steel galvanized commercial polyimide foam C1482, Type I, with vapor retarder woven glass fiber MIL-C-20079, Type I, Classes

3 through 9 elastomeric foam rubberA MIL-P-15280, Form T

EB 4013

C534, Type I woven glass fiber MIL-C-20079, Type I, Classes 3 through 9 mineral fiberD C547, Type II woven glass fiber MIL-C-20079, Type I, Classes 3 through 9 sheet steel galvanized commercial 126 to 450 (52 to 232) cellular glass C552, Type II woven glass fiber MIL-C-20079, Type I, Classes

3 through 9 polyimide foamE 400°F

(204°C) max C1482, Type I woven glass fiber MIL-C-20079, Type I, Classes

3 through 9 elastomeric foam rubberA

180°F (82°C) max MIL-P-15280, Form T

EB 4013

C534, Type I woven glass fiber MIL-C-20079, Type I, Classes 3 through 9 sheet steel galvanized commercial calcium silicate C533 woven glass fiber MIL-C-20079, Type I, Classes

3 through 9 sheet steel galvanized commercial expanded perlite C610 woven glass fiber MIL-C-20079, Type I, Classes 3 through 9 sheet steel galvanized commercial 451 to 1050 (233 to 566) cellular glass, 800°F

(427°C) max C552, Type II woven glass fiber MIL-C-20079, Type I, Classes

3 through 9 sheet steel galvanized commercial mineral fiber C547, Type IV, Grade A sheet steel black commercial calcium silicate C533 sheet steel black commercial expanded perlite C610 sheet steel black commercial

A See 5.4.

B Insulation and insulation covering materials are acceptable for the temperature ranges indicated; other materials are capable of being used provided the requirements of this practice are satisfied. Thermal insulating tape is capable of being used as allowed by Section 8 of this practice.

C Lagging shall be used over insulation only.

D See Supplementary Requirements S1.5.

E See Supplementary Requirements S1.15.

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boiler uptake applications in which metal lagging shall be galvanized sheet steel, in accordance with Specification A653/ A653M, with Coating Designation G-115, and not less than 1⁄32

in. (0.8 mm) thick.

5.9 Before installing insulation, surface preparation of the

piping is to be accomplished in accordance with the ship’s painting schedule.

5.10 Lacing hooks shall be welded to the structure or

equipment (with permission of the vendor of the equipment) for securing insulation to the equipment.

5.11 For bends, fittings, and so forth, where molded sections of pipe insulation cannot be used, mitered sections of the pipe insulation or pre-formed fittings and covers shall be used, provided that they are suitable for the temperature and that the requirements of this practice are satisfied (see 4.1 and 5.4).

Fittings in sizes under 2-in. (51-mm) nominal pipe size (NPS) shall be insulated with insulating cement, in accordance with Specification C449/C449M.

5.12 Where insulation specifications listed in Tables 1 and 3 provide for the use of nonmetal “jacketed”-type insulation, separate lagging material shall be omitted.

5.13 Single-layered insulation construction shall be permit-

ted on all surfaces operating at temperatures below 600°F (316°C). Double-layered insulation construction shall be used

TABLE 2 Insulation and Lagging Materials for Pipe, Tubing, and Fittings Used for Weather-Exposed Piping SystemsA

Temperature Range °F (°C)

Insulation Specification LaggingB Specification

−20 to +40 (−29 to +15) cellular glass C552, Type II woven glass fiber cloth with out-door mastic or metal jacketing

MIL-C-20079, Type I Class 7 (fittings) Class 9 (piping) polyimide foam C1482, Type I woven glass fiber cloth with out-door mastic or metal jacketing with vapor retarder

MIL-C-20079, Type I Class 7 (fittings) Class 9 (piping) woven glass fiber cloth with out-door mastic or metal jacketing elastomeric foam rubber MIL-P-15280, Form T corrosion resistant steel A167, Type 304 elastomeric foam rubber MIL-P-15280, Form T woven glass fiber cloth with out-door mastic or metal jacketing MIL-C-20079, Type I, Classes 3 through 9

41 to 100 (5 to 37) cellular glass C552, Type II corrosion-resistant steel A167, Type 304 polyimide foam C1482, Type I woven glass fiber cloth with out-door mastic or metal jacketing

MIL-C-20079, Type I Class 7 (fittings) Class 9 (piping) perlite C610 corrosion-resistant steel A167, Type 304 calcium silicate C533 corrosion-resistant steel A167, Type 304 mineral fiberC C547, Class 2 or 3 corrosion-resistant steel A167, Type 304 elastomeric foam rubber MIL-P-15280, Form T corrosion resistant steel A167, Type 304 elastomeric foam rubber MIL-P-15280, Form T woven glass fiber cloth with out-door mastic or metal jacketing MIL-C-20079, Type I, Classes 3 through 9

101 to 450 (38 to 232) cellular glass C552, Type II corrosion-resistant steel A167, Type 304 polyimide foamB 400°F (204°C) max

C1482, Type I corrosion-resistant steel A167, Type 304 perlite C610 corrosion-resistant steel A167, Type 304 calcium silicate C533 corrosion-resistant steel A167, Type 304 mineral fiberC C547 Type IV, Grade A corrosion-resistant steel A167, Type 304 elastomeric foam rubber 180°F (82°C) Max

MIL-P-15280, Form T corrosion resistant steel A167, Type 304 elastomeric foam rubber 180°F (82°C) Max

MIL-P-15280, Form T woven glass fiber cloth MIL-C-20079, Type I, Classes 3 through 9 elastomeric foam rubber 180°F (82°C) Max

MIL-P-15280, Form T corrosion-resistant steel A167, Type 304 elastomeric foam rubber 180°F (82°C) Max

MIL-P-15280, Form T woven glass fiber cloth MIL-C-20079, Type I, Classes 3 through 9

A Insulation and lagging materials listed are acceptable for the temperature ranges indicated; other materials are capable of being used provided the requirements of this practice are satisfied.

B See Supplementary Requirements S1.15.

C See Supplementary Requirements S1.5.

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with all joints staggered on all surfaces operating at tempera-tures of 600°F and above, except single-layered construction will be permitted when the total insulation thickness is 3 in. (75

mm) or less or the pipe size is NPS 2 in. (50 mm) or below.

6. Selection Requirements, Piping

6.1 Interior Piping, Temperature Range from −20 to +40°F

(−29 to +4°C)—Use for air conditioning and ship’s stores refrigerant piping and other services within the temperature range.

6.1.1 For insulation and lagging materials, see Table 1.

6.1.2 For insulation thickness, see Table 4 or Table 5.

6.1.3 For installation details, see Fig. 1, Fig. 2, or Fig. 3 as applicable.

6.2 Interior Piping, Temperature Range from 41 to 125°F (5

to 52°C)—Use for cold freshwater, plumbing drains, firemain, main and auxiliary, saltwater circulating, and saltwater cooling, piping, and other services within the temperature range.

6.2.1 For insulation and lagging materials, see Table 1.

6.2.2 For insulation thickness, see Table 2, Table 3, or Table

4.

6.2.3 For installation details, see Fig. 1, Fig. 2, or Fig. 3 as applicable.

TABLE 3 Insulation and Lagging Materials for Machinery and EquipmentA,B

Temperature Range °F (°C)

Insulation Specification Lagging Specification

−20 to +40 (−29 to +4) elastomeric foam rubberA MIL-P-15280, Form S woven glass fiber cloth MIL-C-20079, Type I, Classes 3 through 9 polyimide foam C1482, Type I woven glass fiber cloth with va-por retarder

MIL-C-20079 Type I, Classes 3 through 9 cellular glass C552, Type II sheet steel galvanized commercialC

41 to 125 (5 to 51) elastomeric foam rubberA MIL-P-15280, Form S woven glass fiber cloth MIL-C-20079, Type I, Classes 3 through 9 polyimide foam C1482, Type I woven glass fiber cloth with va-por retarder

MIL-C-20079, Type I, Classes 3 through 9 cellular glass C552, Type I woven glass fiber cloth, or sheet steel black commercial

MIL-C-20079, Type I, Classes 3 through 9 commercialC mineral fiber blanket C553 sheet steel black, commercial or woven glass fiber cloth with vapor retarder

MIL-C-20079, Type I, Classes 3 through 9 commercialC

126 to 1200 (52 to 649) glass fiber felt MIL-I-16411 woven glass fiber cloth MIL-C-20079, Type I, Classes 7 or 9 glass wire, reinforced HH-P-31, Type I polyimide foamD 400°F (204°C) max

C1482, Type I woven glass fiber cloth MIL-C-20079, Type I, Classes 3 through 8 refractory fiber blanket C892, Grade 6 or 8 sheet steel black commercial or woven glass fiber cloth

MIL-C-20079, Type I, Classes 3 through 9 glass wire, reinforced HH-P-31, Type I elastomeric foam rubber (180°F (82°C) max)

MIL-P-15280 sheet woven glass fiber cloth MIL-C-20079, Type I, Classes 3 through 9 high-temperature insulating cementE

C195 calcium silicate insulating block

C553 mineral fiber blanket (1000°F (538°C) max)

C553, C612 sheet steel black, or fibrous glass cloth

MIL-C-20079, Type I, Classes 3 through 9 glass wire, reinforced HH-P-31, Type I perlite C610 woven glass fiber cloth MIL-C-20079, Type I, Classes 3 through 9

A See 5.4.

B Insulation and lagging materials are acceptable for the temperature ranges indicated; other materials are capable of being used provided the requirements of this practice are satisfied.

C With or without rewettable adhesive.

D See Supplementary Requirements S1.15.

E When insulating cement is used, it shall be applied in successive layers, 1⁄2 to 1 in. (13 to 25 mm) in thickness, until the total thickness specified in Table 7 has been reached. Galvanized iron wire netting, 1-in. (13-mm) mesh, shall be installed between layers. A 1⁄2-in. (13-mm) thickness of finishing cement, in accordance with Specification C449/C449M, shall be applied over the last layer of insulating cement.

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6.2.4 Special Conditions:

6.2.4.1 Piping systems operating in this temperature range

including water closet drain piping do not require insulation except where damage or discomfort will result from conden-sation.

6.2.4.2 Dry firemain need only be insulated above ceilings

and in areas in which damage or discomfort from condensation is a problem.

6.2.4.3 If cold, fresh, or potable water tanks (not having a

side integral with the shell) are installed in a heated area, the piping to the pumps and therefore to the services need not be insulated. If this water is being used for flushing water closets, the drain piping need not be insulated.

6.2.4.4 Freshwater fill piping inside the ship shall be insu-lated.

6.2.4.5 Drains from drinking water chillers shall be insu-

lated.

6.3 Interior Piping, Temperature Range from 126 to 450°F

(52 to 232°C)—Use for hot freshwater, hot-water heating, fuel oil service discharge from heaters to headers, condensate, and air ejector piping, boiler feed, high- and low-pressure steam drain piping, and other services within the temperature range.

6.3.1 For insulation and lagging materials, see Table 1.

6.3.2 For insulation thickness, see Table 4, Table 5, Table 7, Table 8, or Table 9.

6.3.3 For installation details, see Fig. 1, Fig. 2, Fig. 3, Fig.

4, Fig. 5, or Fig. 6, as applicable.

6.3.4 Special Conditions—On piping, tubing, and fittings

sized less than NPS 3⁄8 in., insulation need be applied only where required for personnel protection.

6.4 Interior Piping, Temperature Range from 451 to 1200°F

(233 to 649°C)—Use for main steam, auxiliary steam, exhaust and bleed steam, gland seal steam and exhaust, high- and low-pressure steam drains, soot blower steam, boiler blow, safety and relief valve escape steam heating, diesel exhaust piping, and other services within the temperature range.

6.4.1 For insulation and lagging materials, see Table 1.

6.4.2 For insulation thickness, see Table 4, Table 7, Table 8, or Table 9, as applicable.

6.4.3 For installation details, see Fig. 1, Fig. 4, Fig. 5, or

Fig. 6, as applicable.

6.4.4 Special Conditions:

6.4.4.1 The soot blower piping between the root valve and

the soot blower heads shall have an insulation thickness of one half of that indicated for a continually operating system at the same temperature.

TABLE 4 Thickness of Cellular Glass Insulation for Piping, −20 to 800°F (−29 to 427°C)A

Nominal Pipe Size, in.

(mm)

Maximum Temperature, °F (°C) × Thickness, in. (mm)

−20 to 40B

(–29 to 4) 41 to 125C

(5 to 52) 250 (121) 350 (177) 450 (232) 550 (288) 650 (343) 750 (399) 850 (454)

1⁄4 (6) and above 21⁄2 (63) 1 (25) 11⁄2 D (38) 1⁄2 D (13)

11⁄2 (38) and below . . . . . . 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 3 (76) 2 (51) . . . . . . 1 (25) 2 (51) 11⁄2 (38) 2 (51) 3 (76) 3 (76) 31⁄2 (89) 21⁄2, 3 (63, 76) . . . . . . 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 4 (102) . . . . . . 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 4 (102) 5, 6 (127, 152) . . . . . . 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 8 (203) . . . . . . 11⁄2 (38) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 4 (102) 5 (127) 10 (254) . . . . . . 11⁄2 (38) 11⁄2 (38) 2 (51) 3 (76) 4 (102) 4 (102) 5 (127) 12 (305) . . . . . . 11⁄2 (38) 11⁄2 (38) 21⁄2 (63) 3 (76) 4 (102) 41⁄2 (114) 51⁄2 (140) 14 (356) . . . . . . 11⁄2 (38) 11⁄2 (38) 21⁄2 (63) 31⁄2 (89) 4 (102) 41⁄2 (114) 51⁄2 (140) 16 (406) . . . . . . 11⁄2 (38) 11⁄2 (38) 21⁄2 (63) 31⁄2 (89) 41⁄2 (114) 41⁄2 (114) 51⁄2 (140) 18 (457) . . . . . . 11⁄2 (38) 11⁄2 (38) 21⁄2 (63) 31⁄2 (89) 41⁄2 (114) 41⁄2 (114) 51⁄2 (140)

A Thickness of cellular glass, in accordance with Specification C552, Type II.

B For refrigerant piping.

C For antisweat applications.

D Thickness for applications in air-conditioned spaces only.

TABLE 5 Thickness of Elastomeric Foam Rubber Insulation Piping, −20 to 180°F (−29 to 82°C)A

Nominal Size,

in. (mm)

Temperature Range, °F (°C)

Nominal Thickness, in. (mm)

Non-conditioned spaces

Air conditioned spaces only

1⁄4 (6) and above

−20 to 40 (–29 to 4)B 11⁄2 (38) 1 (25)

41 to 125 (5 to 52)C 3⁄4 (19) 1⁄2 (13)

126 to 180 (53 to 82) 1⁄2 (13) 1⁄2 (13) A Thickness of elastomeric foam rubber insulation, conforming with MIL-P-15280, Form T, EB 4013 or C534, Type I.

B For refrigerant piping.

C For antisweat applications.

TABLE 6 Thickness of Polyimide Foam Insulation Piping, –20 to 400°F (–29 to 204°C)A

Nominal Size, in.

(mm)

Temperature Range, °F (°C)

Nominal Thickness, in. (mm) Non-conditioned spaces Air conditioned spaces only 1⁄4 (6) and above –20 to 40

(–29 to 4)B 11⁄2 (38) 1 (25)

41 to 125 (5 to 52)C

3⁄4 (19) 1⁄2 (13)

126 to 180 (53 to 82)

1⁄2 (13) 1⁄2 (13)

181 to 250 (83 to 121)

3⁄4 (19) 3⁄4 (19)

251 to 350 (122 to 177)

1 (25) 1 (25)

351 to 400 (178 to 204)

11⁄2 (38) 11⁄2 (38)

A Thickness of polyimide foam insulation conforming with Specification C1482.

B For refrigerant piping.

C For antisweat applications.

F683 − 14

US Dept of Homeland Security (US Dept of Homeland Security) pursuant to License Agreement. No further reproductions authorized.

6.4.4.2 Main steam piping insulation shall be arranged with

removable pads to bare sections for audio gaging when required.

6.4.4.3 Turbo-generator exhaust to main and auxiliary con-

densers do not require insulation except in areas susceptible to personnel contact.

6.4.4.4 Safety and relief valve escape piping need not be

insulated except in areas susceptible to contact by personnel.

6.4.4.5 Boiler blow piping need not be insulated except in

areas susceptible to contact by personnel.

6.4.4.6 On piping, tubing, and fittings sizes less than NPS 3⁄8

in. (10 mm), insulation need be applied only where required for personnel protection.

6.4.4.7 Steam smothering and steam to the sea chests need

be insulated only in those areas susceptible to personnel contact.

6.5 Weather-Exposed Piping, Temperature Range from −20

to +60°F (−29 to +15°C)—Use for low-temperature piping exposed to the weather.

6.5.1 For insulation and lagging materials, see Table 2.

6.5.2 For insulation thickness, see Table 4.

6.5.3 For installation details, see Fig. 3, Fig. 7, or Fig. 8.

6.5.4 Special Conditions:

6.5.4.1 Piping exposed to the weather shall also be effec-

tively insulated against freezing. The thickness of insulation

TABLE 7 Thickness of Mineral Fiber Insulation for Hot Piping, 850°F (454°C) MaximumA,B

Nominal Pipe Size, in. (mm)

Maximum Temperature, °F (°C) × Thickness, in. (mm)

150 (66) 250 (121) 350 (177) 450 (232) 550 (288) 650 (343) 750 (399) 850 (454)

11⁄2 (38) and below

1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 2 (51) 21⁄2 (63) 3 (76)

2 (51) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 31⁄2 (89) 21⁄2, 3 (63, 76) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 4 (102) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 4 (102) 5, 6 (127, 152) 1 (25) 1 (25) 1 (25) 2 (51) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 8 (203) 1 (25) 1 (25) 1 (25) 2 (51) 21⁄2 (63) 3 (76) 31⁄2 (89) 41⁄2 (114) 10 (254) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 12 (305) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 41⁄2 (114) 41⁄2 (114) 14, 16, 18

(356, 406, 457) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 41⁄2 (114) 5 (127)

A Commercially known as woven glass fiber.

B Thickness of mineral fiber insulation in accordance with Specification C547, Class 2.

TABLE 8 Thickness of Mineral Fiber Insulation for Hot Piping, 1050°F (566°C) MaximumA,B

Nominal Pipe Size, in.

(mm)

Maximum Temperature, °F (°C) × Thickness, in. (mm)

150 (66) 250 (121) 350 (177) 450 (232) 550 (288) 650 (343) 750 (399) 850 (454) 950 (510) 1050 (566)

11⁄2 (38) and below 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 2 (51) 2 (51) 21⁄2 (63) 3 (76) 31⁄2 (89) 2 (51) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 21⁄2, 3 (63, 76) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 4 (102) 41⁄2 (114) 4 (102) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 41⁄2 (114) 5, 6 (127, 152) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 31⁄2 (89) 41⁄2 (114) 51⁄2 (140) 8 (203) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 4 (102) 41⁄2 (114) 51⁄2 (140) 10 (254) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 5 (127) 6 (152) 12 (305) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 4 (102) 5 (127) 6 (152) 14 (356) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 51⁄2 (140) 61⁄2 (165) 16 (406) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 51⁄2 (140) 61⁄2 (165) 18 (457) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 4 (102) 41⁄2 (114) 51⁄2 (140) 61⁄2 (165) A Commercially known as mineral wool.

B Thickness of mineral fiber insulation, in accordance with Specification C547, Class 3.

TABLE 9 Thickness of Calcium Silicate Insulation (Specification C533) for Hot Piping, 1050°F (566°C) MaximumA

Nominal Pipe Size, in.

(mm)

Maximum Temperature, °F (°C) × Thickness, in. (mm)

150 (66)B 250 (121) 350 (177) 450 (232) 550 (288) 650 (343) 750 (399) 850 (454) 950 (510) 1050 (566)

11⁄2 (38) and below 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89) 2 (51) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 21⁄2, 3, 4 (63, 76, 102) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 31⁄2 (89) 4 (102) 5 (127) 5, 6 (127, 152) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 4 (102) 41⁄2 (114) 51⁄2 (140) 8 (203) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 4 (102) 5 (127) 51⁄2 (140) 10 (254) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 5 (127) 6 (152) 12 (305) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 51⁄2 (140) 6 (152) 14 (356) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 21⁄2 (63) 3 (76) 4 (102) 4 (102) 41⁄2 (114) 51⁄2 (140) 61⁄2 (165) 16, 18 (406, 457) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 21⁄2 (63) 3 (76) 4 (102) 4 (102) 5 (127) 51⁄2 (140) 61⁄2 (165) A Thickness of calcium silicate insulation, in accordance with Specification C533.

B For indoor use only.

F683 − 14

US Dept of Homeland Security (US Dept of Homeland Security) pursuant to License Agreement. No further reproductions authorized.

required to prevent freezing is determined by calculation based on the system fluid, system velocity, type of insulation to be used, and climatic conditions involved. This does not apply to systems that are secured and drained.

6.5.4.2 At pipe supports, remove only enough insulation to

provide a snug fit. Fill voids between insulation and support with tightly packed woven glass fiber felt, conforming with MIL-I-16411 to within 1⁄4 in. (6 mm) of the insulation surface.

Fill the remainder with end-sealing compound, conforming with MIL-C-22395, overlapping both the support member and the adjacent insulation. Lag and coat with the same materials as the adjacent pipe.

6.5.4.3 Alternatively, the lagged insulation and ends are

permitted to be clad with metal lagging in lieu of end sealing compound.

6.6 Weather-Exposed Piping, Temperature Range from 41 to

450°F (5 to 232°C)—Use for hot piping systems exposed to weather.

6.6.1 For insulation and lagging materials, see Table 2.

6.6.2 For insulation thickness, see Table 4, Table 7, Table 8, or Table 9.

6.6.3 For installation details, see Fig. 3, Fig. 7, or Fig. 8.

6.6.4 Special Conditions:

6.6.4.1 Piping exposed to the weather shall be effectively

insulated against freezing. The thickness of insulation required to prevent freezing is determined by calculation based on the system fluid, system velocity, type of insulation to be used, and climatic conditions involved. This does not apply to systems that are secured and drained.

6.6.4.2 At pipe supports, remove only enough insulation to

provide a snug fit. Fill voids between the insulation and support with tightly packed woven glass fiber felt, conforming with MIL-I-16411 to within 1⁄4 in. (6 mm) of the insulation surface.

Fill the remainder with end-sealing compound, conforming with MIL-C-22395, overlapping both the support member and the adjacent insulation. Lag and coat with the same materials as the adjacent pipe.

6.6.4.3 Alternatively, the lagged insulation and ends are

permitted to be clad with metal lagging in lieu of end sealing compound.

7. Selection Requirements, Machinery and Equipment

7.1 Temperature Range from −20 to +40°F (−29 to

+4°C)—Use for refrigerant and other equipment within the temperature range.

7.1.1 For insulation and lagging materials, see Table 3.

7.1.2 For insulation thickness, see Table 11.

7.1.3 For installation details, see Fig. 9, Fig. 10, or Fig. 11, as applicable.

7.2 Temperature Range from 41 to 125°F (5 to 52°C)—Use

for low-temperature machinery and equipment within the temperature range.

7.2.1 For insulation and lagging materials, see Table 3.

7.2.2 For insulation thickness, see Table 11.

7.2.3 For installation details, see Fig. 9, Fig. 10, Fig. 11, or

Fig. 12, as applicable.

7.2.4 Special Conditions—Machinery or equipment operat-

ing in this temperature range does not require insulation except where damage or discomfort will result from condensation.

7.3 Temperature Range from 126 to 1200°F (52 to 649°C)—

Use for medium- and high-temperature machinery and equip-ment within the temperature range.

7.3.1 For insulation and lagging materials, see Table 3.

7.3.2 For insulation thickness, see Table 12.

7.3.3 For installation details, see Fig. 10, Fig. 11, Fig. 12, Fig. 13, or Fig. 14, as applicable.

8. Insulation and Lagging Requirements for Removable/ Reusable Blankets for Valves, Fittings, Flanges, and Machinery or Equipment

8.1 Removable Covers—Flanged valves and fittings and

pipeline flanges shall have removable/reusable blankets to permit servicing of takedown joints.

TABLE 10 Thickness of Perlite Insulation (Specification C610) for Hot Piping, 1050°F (566°C) MaximumA

Nominal Pipe Size, in.

(mm)

Maximum Temperature, °F (°C) × Thickness, in. (mm) 150 (66) 250 (121) 350 (177) 450 (232) 550 (288) 650 (343) 750 (399) 850 (454) 950 (510) 1050 (566)

11⁄2 (38) and below 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89) 2 (51) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 21⁄2, 3, 4 (63, 76, 102) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 31⁄2 (89) 4 (102) 5 (127) 5, 6 (127, 152) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 4 (102) 41⁄2 (114) 51⁄2 (140) 8 (203) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 4 (102) 5 (127) 51⁄2 (140) 10 (255) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 5 (127) 6 (152) 12 (305) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 51⁄2 (140) 6 (152) 14 (356) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 21⁄2 (63) 3 (76) 4 (102) 4 (102) 41⁄2 (114) 51⁄2 (140) 61⁄2 (163) 16, 18 (406, 457) 11⁄2 (38) 11⁄2 (38) 11⁄2 (38) 21⁄2 (63) 3 (76) 4 (102) 4 (102) 5 (127) 51⁄2 (140) 61⁄2 (165) A Thickness of perlite insulation, in accordance with Specification C610.

TABLE 11 Thickness of Antisweat Insulation for Machinery and Equipment

Temperature Range, °F (°C)

Material Specification

Nominal Thickness, in.

(mm)A

Unconditioned Spaces

Conditioned Spaces

−20 to +40 (−29 to +4) elastomeric foam rubber, C534, Type II

2 (51) 1 (25)B polyimide foam, C1482, Type I with vapor retarder

2 (51) 1 (25)B cellular glass, C552 Type I 3 (76) 11⁄2 (38)B

41 to 125 (5 to 51) elastomeric foam rubber, C534, Type II

3⁄4 (19) 1⁄2 (13)B polyimide foam, C1482, Type I with vapor retarder

1 (25) 3⁄4 (19)B cellular glass, C552, Type I 1 (25) 1⁄2 (13)B mineral fiber blanket, C553, C612

1 (25) 3⁄4 (19)B

A Nominal thickness exclusive of vapor retarder.

B Thickness for application in air-conditioned spaces only.

F683 − 14

US Dept of Homeland Security (US Dept of Homeland Security) pursuant to License Agreement. No further reproductions authorized.

8.1.1 Removable/reusable blankets shall be manufactured

using materials specified in 8.2 – 8.4 and to thicknesses specified in Tables 4-7. Stitching, lacing, and quilting (required to prevent sagging) shall be accomplished with materials specified in 8.5 and as shown in Figs. 15-17.

8.1.2 Removable/reusable blankets are also manufactured

from segments of block insulation or from preformed sectional pipe covering and molded (pre-formed) components. When a removable cover is made of segments of block insulation or preformed (pre-formed) sectional pipe covering, it shall be of the same material and thickness as the adjoining pipe insula-tion.

8.1.3 Alternatively, high temperature Nomex hook and loop

fastened, removable and reusable fiberglass insulation pads, are permitted to be used for pipe, valve and fitting covers for temperatures up to 450°F (232°C). Insulation pads shall be made up of an inner pad of high temperature glass fiber felt blanket conforming with MIL-I-16411, encased in fiberglass cloth conforming with MIL-C-20079, with an outer silicone coated fiberglass cloth covering. High temperature Nomex Velcro fastenings are attached to the pad to secure it in place.

Pads are a minimum 1-inch thick for applications up to 450°F (232°C). Thicker pads are available if required. (Warning— These pads do not require painting. Improper painting results in severe peeling. Water based enamel provides better results than most paints and will not peel unless disturbed. When painting is required, apply two coats of water based enamel conforming with MIL-PRF-24596, Rev. A, to the silicone coated outer covering. Avoid coating the Nomex Velcro with paint as this will affect its functionality.)

8.2 Filler Materials for Removable Blankets:

8.2.1 Glass fiber felt blanket, conforming with MIL-I-

16411.

8.2.2 Refractory fiber felt blanket, in accordance with

Specification C892, Grade 8.

8.2.3 Refractory fiber felt blanket, also in accordance with

Specification C892, Grade 6.

8.2.4 Mineral fiber blanket, in accordance with Specifica-

tion C612, Class 4.

8.3 Covering or Encapsulating Materials for Removable/

Reusable Blankets:

8.3.1 For surface temperatures 450°F (232°C) and below, the filler shall be encapsulated with woven glass cloth, con-forming with MIL-C-20079, Type I, Class 9 (see Fig. 18, Detail A).

8.3.2 For surface temperatures above 450°F (232°C), the

entire outside surface shall be encapsulated with TY304 stainless steel wire mesh, 0.011-in. (0.25 mm) diameter, No. 60 density, and crimped (see Fig. 18, Detail B). Alternatively, the entire outside surface shall be encapsulated with fiberglass cloth, inserted with stainless steel reinforcement, in accordance with HH-P-31, Type I, Class 1.

8.3.3 The cold or top side of the surface shall be covered

with glass cloth, conforming with MIL-C-20079, Type I, Class

9. The bottom and side surface areas shall be covered as follows:

8.3.3.1 Woven glass fiber cloth, shall be inserted with

stainless steel wire reinforcement, conforming with HH-P-31, Type I, Class 1 (see Fig. 18, Detail C); or

8.3.3.2 Woven glass fiber cloth, conforming with MIL-C-

20079, Type I, Class 9, with TY304 stainless steel wire mesh, 0.008-in. (0.21-mm) diameter and No. 60 density, shall be crimped sewn onto the fibrous cloth (see Fig. 18, Detail D); or

8.3.3.3 TY304 stainless steel wire mesh, 0.011-in. (0.25-

mm) diameter and No. 60 density, shall be crimped (see Fig.

18, Detail E).

8.4 Alternative Covering Materials (for surface tempera-

tures 450°F (232°C) and below, and for cold or top-side covering for temperatures above 450°F), are provided for removable blankets to be used in areas exposed to weather or where liquid penetration presents a fire hazard. Alternative coverings are as follows:

TABLE 12 Thickness of Insulating Materials for Hot Surfaces of Machinery and Equipment, 126 to 1200°F (52 to 649°C)

Material Maximum Temperature, °F (°C) × Thickness, in. (mm)A

150 (66) 250 (121) 350 (177) 450 (232) 550 (288) 650 (343) 750 (399) 850 (454) 950 (510) 1050 (566)

Woven glass fiber, MIL-I-16411 1 (25) 1 (25) 11⁄2 (38) 21⁄2 (63) 3 (76) 4 (102) 4 (102) 5 (127) 51⁄2 (140) 61⁄2 (165) Block calcium silicate, C533 11⁄2 (38) 11⁄2 (38) 2 (51) 21⁄2 (63) 4 (102) 4 (102) 4 (102) 5 (127) 5 (127) 51⁄2 (140) Block perlite, C610 11⁄2 (38) 11⁄2 (38) 2 (51) 21⁄2 (63) 4 (102) 4 (102) 4 (102) 5 (127) 5 (127) 51⁄2 (140) Refractory fiber, C892, Grade 6 1 (25) 1 (25) 2 (51) 21⁄2 (63) 31⁄2 (89) 41⁄2 (114) 41⁄2 (114) 51⁄2 (140) 6 (152) 71⁄2 (191) Refractory fiber, C892 Grade 8 1 (25) 1 (25) 11⁄2 (38) 21⁄2 (63) 3 (76) 4 (102) 4 (102) 5 (127) 6 (152) 7 (178) Mineral fiber,B C553 11⁄2 (38) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 3 1⁄2 (89) 31⁄2 (89) 4 (102) 41⁄2 (114) 5 (127) Elastomeric foam,C C534, Type II 1⁄2 (13) 1⁄2 (13) Polyimide foam, C1482D 3⁄4 (19) 1 (25) 11⁄2 (38) 2 (51) Insulating cement,E C195 2 (51) 2 (51) 21⁄2 (63) 31⁄2 (89) 5 (127) 5 (127) 5 (127) 51⁄2 (140) A Does not include finishing cement.

B 1000°F (537°C) maximum temperature.

C 180°F (82°C) maximum temperature.

D Shall not be used alone above 850°F (454°C).

E See Supplementary Requirements S1.15.

TABLE 13 Metal Lagging MaterialsA

Material Specification Nominal Thickness, in.

(mm)

Hot-dipped galvanized steel

D962 Coating designation G-115

0.014 (0.356)

Aluminum B209, 6061 0.030 (0.762) Corrosion-resistant steel A167, Type 304 0.014 (0.356)

A For use on piping and machinery insulation in locations where insulation is subject to abuse, except for uptake applications in which metal lagging shall be galvanized steel, Specification D962, Coating Designation G-115, not less than 1⁄32

in. (0.795 mm) thick.

F683 − 14

US Dept of Homeland Security (US Dept of Homeland Security) pursuant to License Agreement. No further reproductions authorized.

8.4.1 Silicone-impregnated woven glass fiber cloth,

8.4.2 Silicone-impregnated woven glass fiber cloth with

aluminized facing on one side, and

8.4.3 Fiberglass cloth with aluminum or stainless steel

facing laminated to one side.

8.5 Hardware and Accessory Items for Removable/Reusable

Blanket Construction—Necessary items shall include blanket lacing devices, blanket quilting devices, stitching materials, and installation materials.

8.5.1 Blanket Lacing Devices:

8.5.1.1 TY304 stainless steel lacing rings with lacing wash-

ers (see Fig. 19).

8.5.1.2 TY304 stainless steel lacing hooks with lacing

washers (see Fig. 20).

8.5.1.3 TY303 stainless steel lacing capstan assembly sets

(see Fig. 21).

8.5.1.4 TY304 stainless steel mechanical hook sets (see Fig.

22).

TABLE 14 Thickness of Fiberglass Felt for Removable/Reusable Insulation BlanketsA

Nominal Pipe Size, in.

(mm)

Maximum Temperature, °F (°C) × Thickness, in. (mm)

150 (66) 250 (121) 350 (177) 450 (232) 550 (288) 650 (343) 750 (399) 850 (454) 950 (510) 1050 (566) 1⁄2 (13) 1 (25) 1 (25) 11⁄2 (38) 11⁄2 (38) 2 (51) 2 (51) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89) 1 (25) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 31⁄2 (89)

11⁄2 (38) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 2 (51) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 3 (76) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 41⁄2 (114) 4 (102) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 31⁄2 (89) 4 (102) 5 (127) 6 (152) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 4 (102) 41⁄2 (114) 51⁄2 (140) 8 (203) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 5 (127) 51⁄2 (140) 10 (254) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 4 (102) 5 (127) 6 (152) 12 (305) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 5 (127) 6 (152) 14 (356) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 51⁄2 (140) 6 (152) 16 (406) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 51⁄2 (140) 61⁄2 (165) 18 (457) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 4 (102) 41⁄2 (114) 51⁄2 (140) 61⁄2 (165)

A Thickness of fiberglass felt, in accordance with MIL-I-16411.

TABLE 15 Thickness of Nominal 8-lb/ft3 (128-kg ⁄m3) Refractory Fiber Blanket for Removable/Reusable Insulation BlanketsA

Nominal Pipe Size, in.

(mm)

Maximum Temperature, °F (°C) × Thickness, in. (mm)

150 (66) 250 (121) 350 (177) 450 (232) 550 (288) 650 (343) 750 (399) 850 (454) 950 (510) 1050 (566) 1⁄2 (13) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 11⁄2 (38) 2 (51) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 1 (25) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 31⁄2 (89)

11⁄2 (38) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 2 (51) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 3 (76) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 31⁄2 (89) 4 (102) 41⁄2 (114) 4 (102) 1 (25) 1 (25) 11⁄2 (38) 2 (50) 21⁄2 (63) 3 (76) 3 (76) 31⁄2 (89) 4 (102) 41⁄2 (114) 6 (152) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 4 (102) 41⁄2 (114) 5 (127) 8 (203) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 4 (102) 41⁄2 (114) 51⁄2 (140)

10 (254) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 4 (102) 5 (127) 51⁄2 (140) 12 (305) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 5 (127) 6 (152) 14 (356) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 5 (127) 6 (152) 16 (406) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 41⁄2 (114) 5 (127) 6 (152) 18 (457) 1 (25) 1 (25) 11⁄2 (38) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 41⁄2 (114) 51⁄2 (140) 6 (152)

A Thickness of 8-lb/ft3 (128-kg ⁄m3) refractory fiber blanket in accordance with Specification C892, Grade 8.

TABLE 16 Thickness of Nominal 6-lb/ft3 (96-kg ⁄m3 ) Refractory Fiber Blanket for Removable/Reusable Insulation BlanketsA

Nominal Pipe Size, in.

(mm)

Maximum Temperature, °F (°C) × Thickness, in. (mm)

150 (66) 250 (121) 350 (177) 450 (232) 550 (288) 650 (343) 750 (399) 850 (454) 950 (510) 1050 (566) 1⁄2 (13) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 11⁄2 (38) 2 (51) 2 (51) 21⁄2 (63) 21⁄2 (63) 3 (76) 1 (25) 1 (25) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89)

11⁄2 (38) 1 (25) 1 (25) 11⁄2 (38) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 21⁄2 (63) 3 (76) 4 (102) 2 (51) 1 (25) 1 (25) 11⁄2 (38) 11⁄2 (38) 2 (51) 21⁄2 (63) 21⁄2 (63) 3 (76) 31⁄2 (89) 4 (102) 3 (76) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 31⁄2 (89) 4 (102) 41⁄2 (114) 4 (102) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 3 (76) 3 (76) 31⁄2 (89) 41⁄2 (114) 5 (127) 6 (152) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 4 (102) 41⁄2 (114) 51⁄2 (140) 8 (203) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 21⁄2 (63) 31⁄2 (89) 31⁄2 (89) 4 (102) 5 (127) 51⁄2 (140) 10 (254) 1 (25) 1 (25) 11⁄2 (38) 2 (51) 3 (76) 31⁄2 (89) 31⁄2 (89) 41⁄2…