1、Designation: C 1695 09Standard Specification forFabrication of Flexible Removable and Reusable BlanketInsulation for Hot Service1This standard is issued under the fixed designation C 1695; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revi
2、sion, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the minimum requirements formaterials and fabrication of flexible removabl
3、e and reusableblanket insulation for hot service, from above ambient tem-peratures to 1000F (538C).1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not consid
4、ered standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2
5、. Referenced Documents2.1 ASTM Standards:2C 168 Terminology Relating to Thermal InsulationC 553 Specification for Mineral Fiber Blanket ThermalInsulation for Commercial and Industrial ApplicationsC 680 Practice for Estimate of the Heat Gain or Loss andthe Surface Temperatures of Insulated Flat, Cyli
6、ndrical,and Spherical Systems by Use of Computer ProgramsC 892 Specification for High-Temperature Fiber BlanketThermal InsulationC 1086 Specification for Glass Fiber Mechanically BondedFelt Thermal InsulationC 1129 Practice for Estimation of Heat Savings by AddingThermal Insulation to Bare Valves an
7、d FlangesC 1136 Specification for Flexible, Low Permeance VaporRetarders for Thermal InsulationC 1263 Test Method for Thermal Integrity of Flexible WaterVapor RetardersD 3389 Test Method for Coated Fabrics Abrasion Resis-tance (Rotary Platform Abrader)D 3776 Test Methods for Mass Per Unit Area (Weig
8、ht) ofFabricD 3786 Test Method for Bursting Strength of TextileFabricsDiaphragm Bursting Strength Tester MethodD 5034 Test Method for Breaking Strength and Elongationof Textile Fabrics (Grab Test)D 5035 Test Method for Breaking Force and Elongation ofTextile Fabrics (Strip Method)D 5587 Test Method
9、for Tearing Strength of Fabrics byTrapezoid ProcedureD 6413 Test Method for Flame Resistance of Textiles (Ver-tical Test)2.2 Other Standards:3E PlusRInsulation Thickness Computer Program NorthAmerican Insulation Manufacturers Association(NAIMA)3MIL-C-20079H Military Specification Cloth, Glass; Tape,
10、Textile Glass and Thread, Glass and Wire ReinforcedGlass43. Terminology3.1 GeneralDefinitions included in Terminology C 168shall apply to the terms used in this specification.3.2 Definitions of Terms Specific to This Standard:3.3 removable and reusable blanket insulation, nAn in-sulation blanket, en
11、cased in woven fabric and / or woven wiremesh, that has attachment mechanisms designed to allow theassembly to be installed, then later removed and reinstalled,without using any new insulation or fabric materials.3.4 coated fabric, nA woven fabric coated with a rubberor plastic compound such that th
12、e woven fabric material itselfis not exposed to the environment.3.5 lacing hook, na metal hook that is located on theoutside surface of an insulation blanket and that is securedthrough the blanket; tie wire is wrapped around it so as tosecure an insulation blanket around a pipe component or pieceof
13、equipment.1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.40 onInsulation Systems.Current edition approved Sept. 1, 2009. Published September 2009.2For referenced ASTM standards, visit the ASTM website, www
14、.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from North American Insulation Manufacturers Association(NAIMA), 44 Canal Center Plaza, Suite 310 Alexandria,
15、 VA 22314, http:/www.naima.org4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3
16、.6 lacing anchor, na metal disk, located on the outside ofan insulation blanket, that is secured to a pin that passesthrough the blanket; the assembly is used to wrap tire wirearound so as to secure an insulation blanket around a pipecomponent or piece of equipment.3.7 D-ring, na section of heavy wi
17、re which forms acomplete loop in either a rectangular shape or the shape of thecapital letter “D”, that is used in removable insulation blanketsfor attaching a fabric strap that secures the blanket around apipe component or piece of equipment.4. Materials4.1 Insulation shall be of a flexible fibrous
18、 material accept-able for the maximum temperature of the application. Accept-able materials must be one of the following:High Temperature Fiber Blanket per Specification C 892, anyType or GradeNeedled Glass Fiber Mechanically Bonded Felt per Specifica-tion C 1086Mineral Fiber Blanket, per Specificat
19、ion C 553, of the Typesuitable for the application.4.2 Material for the outer jacket liner and straps, whereused, shall be woven glass fiber cloth that has been treated witha water resistant compound, such as silicone or fluorocarbon,that is suitable for both interior and exterior use, and having th
20、eproperties as shown in Table 1.4.3 Material for the inner jacket shall be the same as for theouter jacket for surface temperatures less than 500F(260FC).4.3.1 For surfaces from 501F (261C) to 1000F (538C)where leaks of process fluids are not expected, the inner layerand gussets shall be one of the
21、following:4.3.1.1 a plain, heat cleaned, glass fiber fabric,4.3.1.2 a Type 304 stainless steel wire knitted mesh madefrom 0.008 inch (0.20 mm) diameter wire with nominal 6 to 8openings per in.4.3.2 For surfaces from 501F (261C) to 1000F (538C)where leaks of process fluids are expected, such as flang
22、e pairsand valves, the inner layer and gussets shall be as specified in4.3.1 and 4.3.1.1 above but also with Type 304 stainless steelfoil that has a minimum thickness of 0.001 in. (0.025 mm).This foil shall be placed between the insulation material andthe outer fabric or wire mesh.4.4 Tie-Down Strap
23、s shall be constructed of one of thefollowing three types of material: (1) the same material as theouter jacket, (2) a woven glass fiber fabric, or (3) a tape ofsuitable thickness with the same coating as the outer jacketmaterial. If the same material as the outer jacket is used, thena double thickn
24、ess is required with an edge trim sewn in placealong both edges. Edge trim shall be applied to preventexposed fabric edges. Ends of the straps shall be turned under14 (6.35mm) to12 (13mm) inch and double-stitched to preventunraveling.4.5 Drawstrings shall be made from 100% textured glassfiber sleevi
25、ng with plain weave,38 in. inside diameter and 0.03in. wall thickness. Drawstrings shall be suitable for 1000F(538C) services.4.6 PTFE-coated glass fiber thread shall be used for servicetemperatures to 500F (260C). Glass fiber thread shall be0.021 inch (0.53 mm) diameter, minimum 20 lbs (9 kg).break
26、ing strength.4.7 Stainless steel thread shall be used for service tempera-tures above 500F (260C). Thread shall be minimum 0.015 in.(0.38 mm) diameter and minimum 18 lbs (8.16 kg). breakingstrength.4.8 All hardware such as D-rings, buckles, tags, etc., shallbe Type 304 stainless steel.5. Design and
27、Fabrication5.1 Insulated items shall be pre-measured to assure a tightfit. Allowances shall be made for valve bonnet height, glandopenings, protrusions, etc.TABLE 1 Physical and Performance Requirements for FabricsPlain, heat cleanedglass fiber fabricAGlass fiber fabriccoated with Silicone GlassFibe
28、r fabric coatedwith FluorocarbonWeight (minimum)oz/sq. yd (g/m2)per ASTM D 377617.7 (602) 16.5 (561) 15 (510)Breaking Strengthlbs/inch (kg/cm) perTest Methods D 5034or D 5035Warp 200 (35.7)Fill 100 (17.9)Warp 225 (40.19)Fill 175 (31.26)Warp 225 (40.19)Fill 175 (31.26)Tear Strength lbs (kg)per Test M
29、ethod D 5587SeeAWarp 40 (18.14)Fill 25 (11.33)Warp 40 (18.14)Fill 25 (11.33)Burst Strength psi (kg/cm2)per Test Method D 3786Not Applicable 200 (14) 200 (14)Abrasion Resistanceper Test Method D 3389SeeACS-10 Wheel, 500g loads500 revs, 15% weight lossmaxCS-10 Wheel, 500g loads500 revs, 15% weight los
30、s maxColor beige Gray GrayTemperature Resistance F (C)per Test Method D 12631000 F (538 C) 500 F (260 C) 600 F (315 C)Flame ResistanceTest Method D 6413SeeAChar Length 1 inch max.(25.4cm)Afterglow 3 seconds max.Flame out 1 second max.Char Length 1 inch max.(25.4cm)Afterglow 3 seconds max.Flame out 1
31、 second max.AMeets MIL-C-20079H, Type 1, Class 9C16950925.2 Fabricate covers to allow easy access to valve packingglands and flange bolts without having to completely removethe cover. All valve covers shall be designed to permit fullfunction of the valves and not to obscure the valves positionindica
32、tor.5.3 Any leak from the packing gland or flanges must bechanneled out of the cover to prevent soaking the insulation.5.4 Force-folding or bending of covers is not allowed.5.5 Covers shall be fabricated with a minimum 2 in. (50mm) of overlap at the end flap to overlap the adjacentinsulation.5.6 Cov
33、ers shall be fabricated with parting faces at thecover low point to facilitate drainage, if possible. Otherwise, adrainage grommet shall be installed at the cover low point.5.7 Any single cover or cover piece shall not exceed 45 lbs(20.4 kg). Covers with a finished weight of 45 lbs (20.4 kg) orless
34、shall be fabricated in one piece.6. Construction6.1 All fabric seams shall be sewn or held together with 16gauge type 304 stainless steel hog ring staples on 1” to 3” (25to 75 mm) centers. Machine stitching shall be used whereverpractical. Hand stitching shall be used when machine stickingis impract
35、ical. Sewing shall be double straight stitched withminimum 7 stitches per inch. Each row shall be parallel andspaced a minimum of18 in. (3.2 mm) to a maximum of12 in.(12.7 mm) apart.6.2 All cover seams shall be turned in or under and sewn toprevent any raw edges from being exposed on any surface.6.3
36、 Gusset-type (straight sides) construction shall be uti-lized for all cover thicknesses greater than 1 in. (25mm).6.4 Fabric seams shall be inside seams, except that it ispossible that the final closing seam is an outside seam.6.5 Secure insulation within the jacketing with quilting pins,lacing hook
37、s, or insulation anchors to prevent insulation fromsettling within the cover. These supports shall penetrate thecold face jacketing and the insulation core, but not the hot facejacketing. Point protectors shall be used to prevent penetrationof the hot face jacketing.7. Tie-Down/Anchor Strap Construc
38、tion7.1 The terminal ends of splits in covers shall utilize flaps ordrawcord/flaps to seal the covers from wind and water. Flapsshall have no gaps where they come in contact with adjacentinsulation.7.2 Use D-ring type buckles and/or hook-and-loop tie-down/anchor straps. Lacing hooks and wire shall n
39、ot be usedunless approved by the Purchaser.7.3 If Purchasers approval has been given for the use oflacing hooks and wires, the lacing hooks shall be tufted to thecold face jacketing. If lacing hooks penetrate the hot face, thehooks shall be secured by self-locking washers with a patch ofthe hot face
40、 jacketing material sewn over the washer.Asiliconerubber patch shall be placed between the washer and the cover.7.4 Ends of straps shall be turned under14 in. (6.3 mm) to12 in. (12.7 mm) and double stitched to prevent unraveling.7.5 Strap length and number of straps for covers shall besufficient to
41、ensure a snug and proper fit without gaps orsagging of the cover.7.6 Tie-down strap length shall have a minimum of 6 in.(150 mm) excess length for pulling and securing.7.7 Drawcords shall be used where terminal ends of coversneed to be drawn down around adjacent insulation, valvebonnets, nozzles, et
42、c., to seal the covers from wind and water7.7.1 Cover shall incorporate flaps at the terminal ends.Drawcord shall be located within this flap.7.7.2 Tie-down/anchor straps adjacent to cover terminalends shall be spaced a minimum of 2 in. (50 mm) back fromthe drawcord flaps.7.7.3 Cord length shall be
43、sufficient to allow a minimum of6 inches (150 mm) of cord to protrude from each end of the flapwhen it is drawn down.7.7.4 Cut ends of braided sleeving cord shall be turned backinside the sleeving a minimum of 1 in. (25 mm) and double-stitched to prevent fraying.7.7.5 A double stitch shall be locate
44、d at the middle of theflap to secure the cord and prevent it from pulling out.8. Identification Tags8.1 Stainless steel identification tags shall be permanentlyattached to the outside of the cover. The identification legendshall be mechanically embossed on the tag. Informationcontained on each tag s
45、hall be specified by the purchaser.8.2 The tag shall not be riveted directly to the cold facejacketing. Tags shall be riveted to a strap comparable to thetie-down/anchor strap. This strap shall be secured to the coldface jacketing to allow the strap to double as a handle or liftingloop.8.3 Covers ut
46、ilizing multi-piece construction shall be appro-priately tagged for assembly.9. Inspection9.1 1 The purchaser reserves the right to inspect the coversduring manufacture. The contractor shall replace or correct anymaterials or installations that do not meet the requirements ofthis practice.10. Reject
47、ion10.1 Failure to comply with the requirements in this speci-fication shall constitute cause for rejection. Rejection shall bereported to the manufacturer or seller promptly and in writing.The manufacturer and supplier have the right to verify rejectedproducts.11. Thickness Table11.1 The users shal
48、l determine required insulation thick-nesses from their economic and climatic conditions. This canbe done using Practice C 680 or 3E PlusRInsulation ThicknessComputer Program.11.2 Energy savings, compared to uninsulated surfaces, canbe estimated using Practice C 1129.11.3 The following insulation th
49、ickness are given as anexample of thickness.12. Keywords12.1 coated fabric; plain fabric; removable blanket;removable/reusable blanket; removable/reusable insulation; re-usable blanketC1695093ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is su
