1、 AMSC N/A FSC 5640 INCH-POUND MIL-PRF-2818D 14 October 2004 SUPERSEDING MIL-I-2818C 9 April 1992 PERFORMANCE SPECIFICATION INSULATION BLANKET, THERMAL This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification establish
2、es the requirements for a metal mesh reinforced thermal insulation blanket. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or r
3、ecommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed.
4、 2.2 Government documents. 2.2.1 Specifications, standards and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. Com
5、ments, suggestions, or questions on this document should be addressed to Commander, Naval Sea Systems Command, ATTN: SEA 05Q, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to commandstandardsnavsea.navy.mil, with the subject line “Document Comment“. Since conta
6、ct information can change, you may want to verify the currency of this address information using the ASSIST Online database at www.dodssp.daps.mil Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-2818D 2DEPARTMENT OF DEFENSE STANDARDS MIL-STD-
7、1623 - Fire Performance Requirements and Approved Specifications for Interior Finish Materials and Furnishings (Naval Shipboard Use). (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch or www.dodssp.daps.mil or from the Standardization Document Order Desk, 700 R
8、obbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these do
9、cuments are those cited in the solicitation or contract. BUREAU OF MEDICINE AND SURGERY (BUMED) BUMED INST 6270.8 - Procedures for Obtaining Health Hazard Assessments Pertaining to Operational Use of a Hazardous Material. (Copies of this document are available online at https:/bumed.med.navy.mil or
10、from Bureau of Medicine and Surgery, Department of the Navy, 2300 E Street, NW, Washington, DC 20372-5300.) NAVAL SEA SYSTEMS COMMAND (NAVSEA) S9510-AB-ATM-010 Rev 2 of 30 July 1992 - Nuclear Powered Submarine Atmosphere Control Manual. (Copies of this document are available from the Naval Sea Syste
11、ms Command, Code SEA 05Z9, 1333 Isaac Hull Avenue, SE, Stop 5133, Washington Navy Yard DC 20376-5133.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in th
12、e solicitation or contract. ASTM INTERNATIONAL C 167 - Standard Test Methods for Thickness and Density of Blanket or Batt Thermal Insulations. (DoD adopted) C 177 - Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Appa
13、ratus. (DoD adopted) C 411 - Standard Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation. (DoD adopted) C 447 - Standard Practice for Estimating the Maximum Use Temperature of Thermal Insulations. C 592 - Standard Specification for Mineral Fiber Blanket Insulation and Bla
14、nket-Type Pipe Insulation (Metal-Mesh Covered) (Industrial Type). (DoD adopted) C 665 - Standard Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing. (DoD adopted) C 892 - Standard Specification for High-Temperature Fiber Blanket Thermal I
15、nsulation. (Copies of these documents are available from www.astm.org or ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-2818D 32.4 Order of precedence. In the even
16、t of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specifie
17、d (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.2. 3.2 Material. The thermal insulation blanket material when specified (see 6.2), shall be secured between metallic supporting members. The insulation material shall contain neither asbestos nor ceramic (refra
18、ctory) fiber. 3.3 Physical requirements. The insulation material shall conform to the physical requirements specified in Table I. 3.3.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent poss
19、ible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. TABLE I. Physical requirements. Characteristic Requirement Test Method Non-fibrous material (shot content) percent by weight, max. Alkalinity percen
20、t, max. Corrosiveness to steel, copper, and aluminum Binder content, percent, max. Density lb/ft3 (without supporting metal facings) Thermal conductivity (K) Max. Btu in/hr. sq. ft. degree Fahrenheit at a mean temperature of 200F 400F 600F Moisture absorption, percent, max. 20 0.6 No corrosion great
21、er than that observed with sterile cotton 1.5 8-12 0.31 0.44 0.60 1.25 4.5.1 4.5.2 4.5.3 4.5.4 4.5.5 4.5.6 4.5.7 3.4 Dimensions. The length, width and thickness of the insulation blanket shall be as specified (see 6.2). The tolerances shall be plus 1/4 inch and minus 1/8 inch for thickness, plus or
22、minus 1/2 inch for length and plus or minus 1/4 inch for width. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-2818D 43.5 Supporting members. The supporting members shall consist of stainless steel wire mesh on both sides of the insulations
23、or wire mesh on one side and metal lath on the other side or without supporting members, as specified (see 6.2 and 6.9) 3.6 Resistance to vibration. The insulation blanket shall not, after heating/vibration, lose more than 15.0 percent in mass, nor sag an average of more than 3 inches (see 4.5.8). T
24、here shall be no detrimental affect to the overall physical characteristics of the blanket when comparing to a control specimen. For example, bolts cutting through the insulation material which cause large quantities of fiber or insulation blanket pieces to drop off the test stand holder during or a
25、fter the test is unacceptable. 3.7 Fire resistance. The insulation material without supporting members shall meet the requirements of MIL-STD-1623 (see 4.5.9). 3.8 Maximum exothermic temperature rise. The insulation blanket mid-point temperature shall not exceed the hot surface temperature by more t
26、han 100F when tested in accordance with ASTM C 411 and the hot surface performance section of ASTM C 447 at the insulations maximum use temperature and at the manufacturers maximum recommended thickness for that temperature. The 100F criterion applies during heat-up as well as steady state condition
27、s (see 4.5.10). 3.9 Toxicity. When evaluated in accordance with 4.5.11, the insulation blanket material shall have no adverse effect on the health of personnel when used for its intended purpose and shall not cause any environmental problems during waste disposal (see 4.5.11 and 6.6). 3.10 Off-gassi
28、ng. The insulation blanket shall meet the requirements in the Nuclear Powered Submarine Atmosphere Control Manual, NAVSEA Technical Manual S9510-AB-ATM-010 Rev 2, for a usage category of Limited (see 4.5.12 and 6.7). 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements spec
29、ified herein are classified as follows: a. First article inspection (see 4.2). b. Conformance inspection (see 4.3). 4.1.1 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shall be performed in accordance with the test conditions specified herein. 4.2 First article inspect
30、ion. First article inspection shall consist of the tests specified in Table II (see 6.3). Unless otherwise specified (see 6.2), if more than one thickness of insulation blanket is acquired at any one time, one blanket of each thickness shall constitute the first article sample. Provided by IHSNot fo
31、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-2818D 5TABLE II. First article inspection. Inspection Requirement Test method Non-fibrous material (shot content) Alkalinity Corrosiveness to steel, copper, and aluminum Binder content Dimensions Density Thermal con
32、ductivity Moisture absorption Resistance to vibration Fire resistance 1/ Maximum exothermic temperature rise Toxicity Off-gassing 1/ 3.3 3.3 3.3 3.3 3.4 3.3 3.3 3.3 3.6 3.7 3.8 3.9 3.10 4.5.1 4.5.2 4.5.3 4.5.4 4.5.5 4.5.5 4.5.6 4.5.7 4.5.8 4.5.9 4.5.10 4.5.11 4.5.12 1/ Shall be performed when specif
33、ied (see 6.2). 4.3 Conformance inspection. Conformance inspection shall be in accordance with Table III. The fire resistance, thermal conductivity, resistance to vibration and maximum exothermic temperature rise conformance tests only need to be conducted for one of the following reasons: a. If with
34、in 1 year prior to the last test approval date the material has not been tested and found in compliance with section 3 and Table I (as applicable) or b. If the material being offered for delivery is not manufactured the same in all respects as that previously tested. TABLE III. Conformance inspectio
35、n. Inspection Requirement Test method Non-fibrous material (shot content) Binder content Dimension Density Thermal conductivity 1/ Resistance to vibration 1/ Fire resistance 1/ Maximum exothermic temperature rise 1/ 3.3 3.3 3.4 3.3 3.3 3.6 3.7 3.8 4.5.1 4.5.4 4.5.5 4.5.5 4.5.6 4.5.8 4.5.9 4.5.10 1/
36、Shall be performed when specified (see 6.2). 4.3.1 Testing of the end item. When required by contract or purchase order (see 6.2), conformance testing specified in 4.5 shall be conducted in accordance with Table IV. Provided by IHSNot for ResaleNo reproduction or networking permitted without license
37、 from IHS-,-,-MIL-PRF-2818D 6TABLE IV. Sampling for examination and test. Lot size Sample size Accept Reject 1/2/3/ 2 - 15 16 - 25 26 - 90 91 - 150 151 - 280 281 - 500 501 - 1200 1201 - 3200 3201 - over 2 3 5 6 7 9 11 13 15 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1/ All defective items must be replaced
38、with acceptable items prior to lot acceptance. 2/ Inspect sample size until reject criteria is reached. If reject criteria is reached, reject entire lot. 3/ Reject lots may be screened and resubmitted for inspection and test. 4.3.2 Noncompliance. If any of the material tested fails to meet the requi
39、rements of Table III, the contractor shall notify the contracting activity and the cognizant inspection activity of such failure and take corrective action on the materials or processes, or both, as warranted, and on all units of product which can be corrected and which are manufactured under essent
40、ially the same materials and processes, and which are considered by the inspection activity to be subject to the same failure. Acceptance and shipment of the product shall be discontinued until corrective action has been taken, inspections shall be repeated on additional units (all tests and examina
41、tions, or the test which the original unit failed at the option of the contracting activity). Final acceptance and shipment shall be withheld until inspections have shown that the corrective action was successful. In the event of failure after re-inspection, information concerning the failure shall
42、be furnished to the cognizant inspection activity and the contracting activity. 4.3.3 Certification. The material shall meet the requirements for fire resistance, thermal conductivity, resistance to vibration and maximum exothermic temperature rise. A certificate of compliance is not acceptable in p
43、lace of a first article test for resistance to vibration, thermal conductivity, and maximum exothermic temperature rise but may be acceptable for the fire resistance test (see 6.3). 4.4 Examination. When required by contractor or purchase order (see 6.2), blankets selected in accordance with the sam
44、pling guidance provided in 4.3.1 shall be surface examined and measured to determine conformance to the requirements of this specification which do not require tests. Defects shall be as described in Table V. Any blanket selected for examination which contains one or more visual or dimensional defec
45、ts shall not be offered for delivery. TABLE V. Defects. Jagged ends of mesh wire, tie wire, or expanded metal. Length not as specified (3.4). Width not as specified (3.4). Thickness not as specified (3.4). Spacing of tie wires not as specified (3.5). Tie wires not securely attached. Mesh wires not p
46、roperly spaced. Expanded metal broken. Supporting members not specified. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-2818D 74.5 Test methods. 4.5.1 Non-fibrous material (shot content). The non-fibrous material (shot) content shall be test
47、ed as specified in ASTM C 892, Annex 2. 4.5.2 Alkalinity. The alkalinity test shall be performed as follows: Weigh a 5 + 0.01 gram representative sample of the insulation material, and introduce into a 500 milliliter (mL) Pyrex Erlenmeyer flask. Wet with 5 mL of 95 percent ethyl alcohol and add 400
48、mL of distilled water. Reflux for 4 hours plus or minus 5 minutes. At the end of this period, disconnect the condenser and filter at once through a no. 41 Whatman paper, or its equivalent, supported in a Buechner funnel and connected to a suction source. Wash the flask and residual material three ti
49、mes with 25 mL portions of hot distilled water. Titrate the combined filtrate and wash solution immediately with 0.02N H2SO4 using 6 to 8 drops of a 1 percent solution of phenol red indicator to the disappearance of the pink color. Run a blank determination on the same amount of distilled water and alcohol and substitute the titration value in the formula below: Percentage alkalinity as Na2O = (A-B)N x 0.031 x 100 W Where: A - mL H
