1、i- I MIL-STD-LLbbA ND 99999LL OL02b8b 5 i i INCH-POUND I I MIL-STD-1166A 19 September 1991 SUPERSEDING MIL-STD-1166 (MI) 3 May 1963 MILITARY STANDARD RADIOGRAPHIC TESTING REQUIREMENTS FOR SOLID PROPELLANTS AMSC N/A DISTRIBUTION STATEMENT A. unlimited. AREA NDTI Approved for public release; distribut
2、ion is Licensed by Information Handling Services, MIL-STD-LLbbA ND 9999933 0302b87 7 = * MIL-STD-116 6A FOREWORD 1. This military standard is approved for use by all Departments and Agencies of the Department of Defense. 2. Beneficial comments (recommendations, additions, deletions) and any pertinen
3、t data which may be of use in improving this document should be addressed to: Commander, US Army Missile Command, ATTN: AMSMI-RD-SE-TD-ST, Redstone Arsenal, AL 35898-5270 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. 3.
4、Radiographic testing is a major management area deserving separate standardization coverage. Such a standard should contain all radiographic testing methods identified under materials and process topics, e.g. metals, graphite, welments, etc. Only in this manner can redundancy be prevented and the ut
5、ility of radiographic methods facilitated. ii Licensed by Information Handling ServicesI 3 MIL-STD-3LbbA ND m 9999933 0302b 9 = , MIL-STD-1166A CONTENTS PARAGRAPH 1. 1.1 1.2 2. 2.1 2.1.1 2.2 2.3 3. 4. 4.1 4.1.1 4.1.2 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 4.2.6 4.3 4.3.1 4.3.1.1 5. 5.1 5.i.i 5.1.1.1 5.1.
6、2 5.1.2.1 5.1.2.2 5.1.2.3 5.2 SCOPE Scope Application APPLICABLE DOCUMENTS Government documents Oth.er Government documents, drawings, and Non-Government publications Order of precedence publications DEFINITIONS GENERAL REQUIREMENTS General Quantity for inspection Quality levels of inspection Radiog
7、raphic technique Radiographic sensitivity Film placement Multiple film techniques Non-film techniques Image quality Source - film distance Penet rameters Fabrication Penetrameter designs DETAILED REQUIREMENTS Penetrameter thickness Minimum penetrameter thickness Minimum hole size Identification Spec
8、ial levels 1-1T and 1-2T Special level 4-2T Lead numbers Quality levels of inspection 1 1 1 2 2 2 2 3 4 5 5 5 5 5 5 5 5 5 5 6 6 6 6 iii Licensed by Information Handling ServicesMIL-STD-LLbbA ND 99999LL OL02b89 O PARAGRAPH 5.2.1 5.2.1.1 5.2.1.2 5.2.2 5.2.2.1 5.2.2.2 5.2.3 5.3 5.4 5.5 5.5.1 5.6 5.7 6.
9、 6.1 6.2 6.3 6.4 6.5 FIGURE 1 TABLE I II III MIL-STD-1166A CONTENTS Level 2-1T radiography Level 2-2T radiography Level 2-4T radiography Level 1-1T radiography Level 1-2T radiography Level 4-2T radiography Containing vessels Placement of penetrameters Number of penetrameters Location markers Identif
10、ication of the radiograph Retention of radiographs and records Safety NOTES Intended use Issue of DODISS Met rication Subject term (keyword) listing Changes from previous issue Penetrameters Examples of penetrameter identification Normal quality levels of inspection Special quality levels of inspect
11、ion iv PAGE - 10 10 10 10 10 10 10 10 11 11 11 11 11 12 12 12 12 12 12 7 8 9 10 i e e Licensed by Information Handling Services7 Q MIL-STD-LLbbA ND 99999LL 0102b90 7 1 MIL-STD-1166A 1. SCOPE 1.1 Scope. This standard covers the requirements for quality level and testing sensitivity in radiographic in
12、spection of solid propellants to determine the presence of unacceptable voids and other discontinuities. 1.2 Application. The criteria for the radiographic testing of solid propellants in this standard are applicable to normal and special quality levels of inspection of radiography penetrameter sens
13、itivity. 1 Licensed by Information Handling Services- MIL-STD-33bbA ND 9999933 0302b93 9 MIL-STD-1166A 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, .and handbooks form a part of this document to the extent
14、specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2) . STANDARDS MIL1 TARY MIL-STD-369 - Glossary of Terms and
15、Definitions for Radiographic Testing (Unless otherwise indicated, copies of the federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Ave., Philadelphia, PA 19111-5094.) 2.1.2 Other Government documents, drawi
16、ngs, 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 are those cited in the solicitation. PUBLICATIONS National Institute of Standards and Technology - National
17、Council On Radiation Protection and Measurements (NCRP) (Users of this document are encouraged to select only those NCRP document reports appropriate for their individualized applications.) (Application for complete listing of NCRP numbered reports should be addressed to NCRP Publications, 7910 Wood
18、mont Avenue, Suite 800, Bethesda, MD 20814. ) 2.2 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DODISS cited in the s
19、olicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). 2 Licensed by Information Handling ServicesMIL-STD-1166A American Welding Society AWS A2.4 Standard Symbols for Welding, Brazing and Nondestr
20、uctive Examination (Application for copies should be addressed to the American Welding Society, Inc., 550 N.W. LeJeune Road, P.O. Box 351040, Miami, FL 33135.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. The
21、se documents also may be available in or through libraries or other informational services. 1 2.3 Order of precedence. In the event 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, supersed
22、es applicable laws and regulations unless a specific exemption has been obtained. 3 Licensed by Information Handling ServicesMIL-STD-1LbbA ND 9999911 0102693 2 I MIL-STD-1166A 3. DEFINITIONS (For definition of terms relative to this document, refer to 4 Licensed by Information Handling ServicesMIL-S
23、TD-116 6A 4. GENERAL REQUIREMENTS 4.1 General. The radiographic method of testing is used for determining the presence of voids and discontinuities in solid propellants. Radiographic inspection specified herein is intended to apply to all items requiring radiographic inspectian in compliance with ap
24、plicable specifications, drawings, contracts, purchase orders, and shall include the use of X-ray, gamma-ray and neutron sources, 4.1.1 Quantity for inspection. The number of items and areas to be radiographed shall be in accordance with the applicable detail specification. Radiographic location mar
25、kings shall be incorporated on all applicable drawings, and shall be in accordance with AWS A2.4 or the detailed radiographic procedure approved by the procuring activity. 4.1.2 Quality levels of inspection. The quality level of inspection to be applied, based on the requirements of the propellant,
26、shall be as specified in the detail specification and shall be. in accordance with the normal and special quality levels of inspection established herein. 4.2 Radiographic technique. 4.2.1 Radiographic sensitivity. Radiography shall be performed with a technique which will distinguish the applicable
27、 penetrameter. The basis of judgment for radiographic sensitivity shall be the penetrameter. Sensitivity of radiographs shall be determined by using the penetrameters detailed herein. The minimum dimension of the defect, required to be detected by the detail specification, shall be used as the basis
28、 for establishing the upper numerical sensitivity limit required of the radiograph. 4.2.2 Film placement. Unless otherwise specified, the film surface shall be perpendicular to the central beam of radiation. 4.2.3 Multiple film techniques. Film techniques with two or more films of equal or different
29、 speeds in the same film holder, will be permitted provided that the appropriate hole in the penetrameter(s1 for a specific area is demonstrated on the film, or films, used to interpret that area. 4.2.4 Non-film techniques. The use of any non-film technique shall be approved by the procuring activit
30、y. the penetrameter hole shall be demonstrated in the resultant image or recording media. When non-film techniques are permitted, 4.2.5 Imaqe quality. The exposed films shall be free of artifacts which interfere with their interpretation. 5 Licensed by Information Handling ServicesMIL-STD-LLbbA ND =
31、 99999LL 0102695 b MIL-STD-1166A c I 4.2.6 Source - film distance. Any source-film distance will be satisfactory provided that the required sensitivity and sharpness is attained without image distortion. 4.3 Penetrameters. The quality of all levels of radiographic testing shall be determined by a pe
32、netrameter. 4.3.1 Fabrication. Penetrameters for examination of propellant materials shall be fabricated from propellant of the same type being examined or from inert material that is radiographically similar. Inert materials from which penetrameters may be fabricated shall be considered radiographi
33、cally similar provided the variation in the film densities, for corresponding thicknesses of the inert material and the propellant, is not more than for level 4-2T the penetrameter thickness shall be no greater than .O4 (4 percent) of the thickness of propellant being examined. 5.1.1 Penetrameter th
34、ickness. Penetrameter thickness shall be not less than 0.010 inch despite the requirements of 5.1. 5.1.1.1 Hole size. Hole size shall be not less than 0.020 inch at the 1T location, despite the requirements of 5.1. 5.1.2 Identific,ation. The regular penetrameter shall be identified with an integral
35、number made of lead which is attached to the penetrameter. For penetrameter thicknesses of less than O:180-inch this number shall indicate in hundredths of an inch (0.01) the minimum thickness of material to which the level 2-1T, 2-2T and 2-4T penetrameter is applicable, as shown in Table I. For pen
36、etrameter thicknesses of 0.180 inch and greater this number shall indicate in inches the minimum thickness of material to which the level 2-1T, 2-2T and 2-4T penetrameter is applicable, as shown in table I. TABLE I. Examples of penetrameter identification. Identif i- cation no. on penetra- meter 100
37、 300 800 14 20 I Minimum specimen thickness Inch o. 020 0.060 O. 160 O ,280 O. 400 I Levels 1-1T Level and 1-2T I 4-2T Inches 2.0 6.0 16.0 28.0 40.0 Inches .5 1.5 4.0 7.0 10.0 5.1.2.1 Special levels 1-1T and 1-2T. This lead identification number for penetrameter thickness less than 0.180-inch shall
38、indicate in hundredths of an inch (0.01), one-half the minimum thickness to which the penetrameter is applicable. For penetrameter thickness of 0.180-inch and greater the 8 Licensed by Information Handling Servicestr MIL-STD-LLbbA ND m 99999LL OL02b9 L m- c 4 MIL-STD-1166A Level of inspec- tion iden
39、tification number shall indicate in inches one half the minimum thickness to which the penetrameter is applicable (see table I). Penetrameter thickness 5.1.2.2 Special level 4-2T. This lead identification number for penetrameter thicknesses less than 0.180-inch shall indicate in hundredths of 2-1T 2
40、-2T 2-4T an inch (0.01), twice the minimum thickness to which the penetrameter is applicable. For penetrameter thickness of 0.180-inch and greater the identification number shall indicate in inches twice the thickness to which the penetrameter is applicable (see table I). .O2 of specimen thickness 1
41、T .O2 of specimen thickness 2T .O2 of specimen thickness 4T 2/ 5.1.2.3 Lead numbers. Lead numbers shall be placed adjacent to the circular penetrameters to provide identification of the penetrameter on the film. 5.2 Quality levels of inspection. Three quality levels of inspection, levels 2-1Tf 2-2T
42、and 2-4T, which are available through the design and application of the penetrameter, are shown in table II and specified in 5.2 through 5.2.1.2. Other levels of inspection available are shown in table III, and specified in 5.2.2 through 5.2.2.2. Care should be exercised in specifying the radiograph
43、ic quality levels 2-1T or 1-2T, by first determining that these quality levels are necessary and can be maintained in production. TABLE II. Normal quality levels of inspection. Minimum perceptible hole di ame t e r Equivalent penetrameter sensitivity I/ - 11 Equivalent penetrameter sensitivity is th
44、at thickness of penetrameter expressed as a percentage of the total thickness in which a 2T hole would be visible under the same radiographic conditions. - 21 For the appropriate thicknesses, the outline of the circular penetrameter shall be shown when the 4T hole is specified. 9 Licensed by Informa
45、tion Handling ServicesMIL-STD-LLbbA ND 99999LL OLOZb99 3 MIL-STD-1166A TABLE III. Special quality levels of inspection. Level inspec- tion Penetrameter thickness 1-1T 1-2T 4-2T .O1 of specimen thickness .O1 of specimen thickness .O4 of specimen thickness Minimum Equivalent perceptible penet rameter
46、diamet er sensitivity 1T 2T 2T 0.7 1 4 5.2.1 Level 2-1T radiography. In level 2-IT radiography the 1T hole in a penetrameter .O2 (2 percent) of the specimen thickness shall be visible. 5.2.1.1 Level 2-2T radiography. In level 2-2T radiography the 2T hole in a penetrameter .O2 (2 percent) of the spec
47、imen thickness shall be visible. 5.2.1.2 =el 2-4T radiography. In level 2-4T radiography the 4T hole in a penetrameter .O2 (2 percent) of the specimen thickness shall be visible. 5.2.2 Level 1-1T radioqraphy. In level 1-1T radiography the 1T hole in a penetrameter .O1 (1 percent) of the specimen thi
48、ckness shall be visible. 5.2.2.1 Level of 1-2T radiography. In level 1-2T radiography the 2T hole in a penetrameter .O1 (1 percent) of the specimen thickness shall be visible. 5.2.2.2 Level 4-2T radiography. In level 4-2T radiography the 2T hole in a penetrameter .O4 (4 percent) of the specimen thic
49、kness shall be visible. 5.2.3 Containinq vessels. In the radiography of propellant material contained within a vessel, the thickness of the propellant shall be the criterion for determining the appropriate penetrameter. The wall thickness of the containing vessel shall not be added to the thickness of propellant nor equated to equivalent thicknesses of propellant, but may be considered in determining the level of radiographic quality to be 0btained.u 5.3 Placement of penetrameters. The penetrameter shall be placed on the source side of the section being examined. In no case shall the pen
