1、Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Sea Systems Command, ATTN: SEA 05S, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStandardsnavy.mil, with the subject line “Document Comment”. Since contact
2、information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.dla.mil. AMSC N/A FSC 4130 INCH-POUND MIL-DTL-22576A 22 October 2013 SUPERSEDING MIL-T-22576(SHIPS) 21 November 1960 DETAIL SPECIFICATION TERMINALS, AIR, DIFFUSIN
3、G, CIRCULAR, FOR SHIPBOARD USE This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers air supply terminals of the diffusing type for use in ventilating and air conditioning systems on naval ships. 1.2 Classif
4、ication. Diffusing terminals are of the following sizes (diameters) (see 6.2): a. 3-inch b. 4-inch c. 5-inch d. 6-inch e. 7-inch f. 8-inch g. 9-inch h. 10-inch i. 12-inch 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specificat
5、ion. This section does not include documents cited in other sections of this specification or recommended 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 o
6、f documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 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 otherwi
7、se specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-S-901 - Shock Tests, H.I. (High-Impact) Shipboard Machinery, Equipment, and Systems, Requirements for (Copies of this document are available online at http:/quicksear
8、ch.dla.mil/ or https:/assist.dla.mil.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-22576A 2 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of
9、this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. NAVAL SEA SYSTEMS COMMAND (NAVSEA) DRAWINGS 804-690702 - Circular Diffusing Terminal for Air Conditioning Systems (Copies of this document are avai
10、lable from the applicable repositories listed in S0005-AE-PRO-010/EDM online at https:/nll.ahf.nmci.navy.mil or from the Naval Ships Engineering Drawing Repository (NSEDR) online at https:/199.208.213.105/webjedmics/index.jsp. To request an NSEDR account for drawing access, send an email to NNSY_JED
11、MICS_NSEDR_HELP_DESKnavy.mil.) 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 the solicitation or contract. AMERICAN NATIONAL STANDARDS INSTITUTE/AMERIC
12、AN SOCIETY FOR QUALITY (ANSI/ASQ) ANSI/ASQ Z1.4 - Sample Procedures and Tables for Inspection by Attributes (Copies of this document are available from the American National Standards Institute, 25 W. 43rd Street, 4th Floor, New York, NY 10036 or online at http:/webstore.ansi.org/.) 2.4 Order of pre
13、cedence. Unless otherwise noted herein or in the contract, 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, supersedes applicable laws and regulations unless a specific exempti
14、on has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.2. 3.2 Design. The terminals furnished shall have contours, dimensions, and tolerances in accordance with 804-690702 for sizes specified (se
15、e 6.2). 3.2.1 Terminal sizes. Sizes of the terminals shall be limited to those shown on 804-690702 and in 1.2. 3.3 Materials. 3.3.1 Terminal material. Terminals shall be constructed of 5052 or 3003 aluminum. The hardest temper that will withstand the forming processes shall be used. 3.3.2 Fasteners.
16、 3.3.2.1 Screws. Corrosion-resisting steel screw fasteners shall be used to secure bellmouth to throat. 3.3.2.2 Rivets. Rivets shall be of 2014, 2017, 2024, 2117, or 5056 aluminum, or of corrosion-resistant steel. 3.3.3 Gasket material. Gasket material shall be of neoprene or rubber. 3.3.4 Recycled,
17、 recovered, environmentally preferable, or biobased materials. Recycled, recovered, environmentally preferable, or biobased materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically adv
18、antageous life cycle costs. 3.4 Construction. 3.4.1 Loose parts. Terminals shall be free of loose parts which will produce rattle or noise under conditions of vibration. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-22576A 3 3.4.2 Perforati
19、ons. The bellmouth and bottom plate of each terminal shall be perforated with 0.068-inch diameter holes on -inch centers. The total opening of the holes shall be approximately 6.5 percent of area of the sheet. 3.4.3 Burrs and irregularities. The edges of vanes, rings, collars, and other parts shall
20、be free of burrs, tears, or irregularities, which will tend to increase noise or turbulence in the air stream. In spinning or forming the bellmouth and bottom plate some distortion of the holes in the perforated sheets is unavoidable. 3.4.4 Tears. There shall be no tears or split material between ho
21、les. 3.4.5 Cleaning. All brazed and welded joints shall be cleaned of flux and residue. 3.5 Label plates. Each terminal shall carry an identifying label. The label information may be pressed into the throat piece, or a plate or a permanent corrosion-resistant label secured with adhesive may be attac
22、hed to the throat piece. The following information shall be shown by the label: a. Circular diffusing terminal b. Size c. Stock number d. Contract number or order number e. Manufacturers name and Commercial and Government Entity (CAGE) code 3.6 Drawings. Drawings shall be as specified (see 6.2). 3.7
23、 Shock. Unless otherwise specified (see 6.2), the terminal shall pass the high-impact shock tests specified in MIL-S-901 for Grade A, Class I equipment. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspect
24、ion (see 4.2). b. Conformance inspection (see 4.3). 4.2 First article inspection. First article inspection shall be performed on each size when a first article sample is required (see 3.1). This inspection shall include the examination of 4.4 and the tests of 4.5 (see table I). TABLE I. Test agenda.
25、 Applicability of test to circular diffusing terminal Tests Requirement Test First article Conformance Shock 3.7 4.5.1 All Shake 3.4.1 4.5.2 All All 4.3 Conformance inspection. Conformance inspection shall include the examination of 4.4 and the tests of table I. 4.4 Examination. Each of the sample d
26、iffusing terminals selected in accordance with 4.4.1 and 4.4.2 shall be examined and measured to verify compliance with this specification. Examination shall be conducted as specified in table II. Any diffusing terminal in the sample containing one or more defects shall be rejected. 4.4.1 Inspection
27、 lot. All diffusing terminals of the same size offered for delivery at one time shall be considered a lot for purposes of sampling and inspection. 4.4.2 Sampling for examination. Sample diffusing terminals shall be selected at random from each lot in accordance with ANSI/ASQ Z1.4 at Inspection Level
28、 II for the examination specified in 4.4. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-22576A 4 TABLE II. Classification of defects. Categories Defects Critical: None defined. Major: 101 Circular diffusing terminal incomplete; component pa
29、rts missing. 102 Not in accordance with approved drawing. 103 Evidence of unauthorized material used. 104 Material thickness. (Vanes, mounting ring, bellmouth, and throat not within specified tolerance.) 105 Number and location of vanes nonconforming. 106 Vane configuration and size nonconforming. 1
30、07 Drilling, mounting holes, bolt circles, and fasteners nonconforming; rivets loose. 108 Diffusing terminal diameter and overall height not as specified. 109 Not free of cracks, splits, and deformation. 110 Surfaces not smooth; evidence of sharp edges or burrs. 111 Vane assembly not inclined at the
31、 specified angle. 112 Bottom plate not formed to the specified contour (radius nonconforming). 113 Throat diameter nonconforming. 114 Evidence of rattle. 115 Ring spacing not as specified. 116 Throat piece flange nonconforming; warpage exceeds specified tolerance. 117 Brazed and welded joints are no
32、t clean. Minor: 201 Marking, label plate missing, data on label plate missing, not legible, or not permanent. 202 Area of holes in bellmouth not as specified. 4.5 Tests. 4.5.1 Shock test. Diffusing terminals shall be shock tested on the light weight machine as prescribed for Grade A shock of MIL-S-9
33、01. 4.5.2 Shake test. Diffusing terminal shall be shaken by hand; any audible noise shall be accepted as an indication of loose parts. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-22576A 5 5. PACKAGING 5.1 Packaging. For acquisition purpos
34、es, the packaging requirements shall be as specified in the contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requiremen
35、ts are maintained by the Inventory Control Points packaging activities within the Military Service or Defense Agency, or within the military services system commands. Packaging data retrieval is available from the managing Military Departments or Defense Agencys automated packaging files, CD-ROM pro
36、ducts, or by contacting the responsible packaging activity. 6. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use. The terminal is intended to be used in air conditioning ductwork to distribute air in ships compart
37、ments. 6.2 Acquisition requirements. Acquisition documents should specify the following: a. Title, number, and date of this specification. b. Sizes required (see 1.2 and 3.2). c. Whether first article inspection is required (see 3.1 and 6.3). d. Drawing requirements (see 3.6). e. Shock requirements
38、(see 3.7). f. Packaging requirements (see 5.1). 6.3 Waiving of requirement for first article testing. Invitations for bids should provide that the Government reserves the right to waive the requirement for first article testing to those bidders offering a product that has been previously approved to
39、 MIL-DTL-22576 or MIL-T-22576. 6.4 Subject term (key word) listing. Air conditioning Ductwork Ventilating 6.5 Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Custodians: Preparing a
40、ctivity: Navy SH Navy SH DLA IS (Project 4130-2013-004) Review activity: DLA GS NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
