1、MIL-B-52734C 54 9 999990b 0488760 2 9 Y- -%- INCH-POUND MIL-B- 52734C (ME) 21 Aumst 1991 SUPERSEDING 5 October 1983 MIL-B-52734B(ME) MILITARY SPECIFICATION BRIDGE, FLOATING: RIBBON, INTERIOR BAY AND RAMP BAY This specification is approved for use within the USA Belvoir Research, Development and Engi
2、neering Center, Department of the Army, and is available Defense. 1. SCOPE 1.1 cope. together with r ibbsn bridge for use by all Departments and Agencies of the Department of This specification covers interior bays and ramp bay which, the transporter (MIL-T-52735 or MIL-T-53031), constitute the syst
3、em. 1.2 Classification. The bridge bays shall be of the following types, as specified (see 6.2): Type I - Interior bay, Type II - Ramp bay. . 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 s-pec.d handbooks. The following specifications, standards, and handbooks form a part of this dociimen
4、t to the extent spcciied 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) Beneficial cc-ments (recommendations, addit
5、ions, deletions) and any pertinent MSC N/A FSC 5420 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SPECIFICATIONS MILITARY MIL- P - 116 MIL- T - 704 MIL-L-2104 MIL-E-2
6、3765/2 MIL-C-24667 MIL-B-43436 MIL-C-46168 MIL-T-52735 MIL-T-53031 MIL-C-53039 MIL-E-52734C 54 = 9999906 0488761 4 MIL-B-52734C(ME) STANDARDS FEDERAL FED-STD-H28 - Preservation, Methods of. - Treatment and Painting of Materiel. - Lubricating Oil, Internal Combustion Engine, Tactical Service. - Elect
7、rodes and Rods - Welding, Bare, Solid, Low Alloy Steel. - Coating System, Non-Skid, for Roll or Spray Application (Metric). - Band, Marker, Blank. - Coating, Aliphatic Polyurethane, Chemical Agent - Transporter: M812 Chassis, For Ribbon Floating - Transporter: M945 Chassis, For Ribbon Floating - Coa
8、ting, Aliphatic Polyurethane, Single Component, Resistant. Bridge. Bridge . Chemical Agent Resistant. - Screw Thread Standards for Federal Services. MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by MIL-STD-129 - Marking for Shipment and Storage. MIL-STD-130 - Identification Ma
9、rking of US Military Property. MIL-STD-209 - Slinging Eyes and Attachments for Lifting and Tying MIL-STD-889 - Dissimilar Metals. Attributes. Down Military Equipment. (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardi
10、zation Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 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
11、 specified, the issues are those in effect on the date of the solicitation. DRAWINGS ME TA13218E4002 TA13218E4005 - Bridge, Floating: Ribbon, Interior Bay. - Bridge, Floating: Ribbon, Ramp Bay. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-52
12、734C 54 m 9999906 O488762 la (Copies of drawings, publications, and other Government documents required by contractors in connection with specific acquisition functions should be obtained from the USA Belvoir Research, Development and Engineering Center, ATTN: STRBE-JBS, Fort Belvoir, VA 22060-5606.
13、) 2.2 Non-Government mblications. The following documents form a part of this specification 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 solicitation. Unless otherwise specified,
14、 the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ACME) Boiler and Pressure Vessel Code, Section IX, Qualification Standard for Welding and Brazing Procedures, Welders, Brazers, and Welding
15、 and Brazing Operators. (Application for copies should be addressed to the American Society of Mechanical Engineers, 345 East 47th Street, New York, NY 10017.) AMERICAN WELDING SOCIETY, INC. (AWS) A5.1 - Covered Carbon Steel Arc Welding Electrodes. A5.5 - Low-Alloy Steel Covered Arc-Welding Electrod
16、es. A5.10 - Bare Aluminum and Aluminum Alloy Welding Electrodes and Rods. A5.18 - Carbon Steel Filler Metals for Gas Shielded Arc Welding. (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 stan
17、dards and other publications are normally available from the organizations which prepare or which distribute the documents. documents also may be available in or through libraries or other informational services.) These 2.3 Order of Drecedence. in the event of a conflict between the text of this doc
18、ument and the references cited herein (except for related associated detail specifications, specification sheets or MS standards), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.
19、3. REQUIREMENTS 3.1 DescriDtion. The bridge bays and bridge bay components shall be in accordance with the applicable top assembly drawings (see 2.1) and as specified herein. 3.1.1 Drawinp. The drawings forming a part of this specification are end product drawings. No deviation from the prescribed d
20、imensions or tolerances is permissible without prior approval of the contracting officer. Where tolerances could cumulatively result in incorrect fits, the contractor shall provide tolerances within those prescribed on the drawings to ensure correct 3 Provided by IHSNot for ResaleNo reproduction or
21、networking permitted without license from IHS-,-,-MIL-52734C 54 9999906 O488763 8 m MIL-B-52734C(ME) e fit, assembly and operation of the bridge bays. Any data (e.g., shop drawings, layouts, flow sheets, processing procedures, etc.) prepared by the contractor or obtained from a vendor to support fab
22、rication and manufacture of the production item shall be made available, upon request, for inspection by the contracting officer or his designated representative. Dimensions shown on the drawings shall be verified using parts at 68 degrees Fahrenheit (F) to 70 OF. 3.2 First article. 3.2.1 First arti
23、cle. When specified (see 6.2), the bridge bays or separately procured components shall be subjected to first article inspection (see 6.3) in accordance with 4.3. 3.2.2 Hvdraulic system comDonents. In addition to the first article type II bridge bays, the following hydraulic components shall be furni
24、shed and tested by the contractor prior to the time the first articles are furnished: One each of all hydraulic fittings, hose assemblies, valves, quick- disconnects, couplings and plugs, and hydraulic cylinders. The hydraulic components shall be identical to those furnished on the first article. Te
25、sts shall be those specified in section 4 and shall be subject to surveillance and approval of the Gover-mient. L b 3.3 EatLr.ta/ 1 Bridge Bay, type I or II 2/ as required Quality Assurance Pamphlet, “Inspection Equipment for Bridge, Floating: Ribbon, Interior Bay and Ramp Bay“ 3/ Technical Manual,
26、Operators and Organizational Maintenance, “Improved Float Bridge (Ribbon Bridge) II. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-52734C 54 M 9999906 0488767 5 MI - i/ - 2/ - 3/ When type I bays are procured separately, the Government will
27、 furnish a cylinder for use with pull test. When type I or II bays are procured separately, the Government will loan a sufficient number of other types of bays to accomplish tests. The contractor is responsible for fabricating the functional inspection equipment and obtaining the necessary optical i
28、nspection equipment required by Quality Assurance Pamphlet P715-141. 3.14 Ponton leak. When tested in accordance with 4.5.2.10 each individual ponton shall be capable of maintaining a constant, independent, internally applied air pressure of 1.5 psi, plus or minus 0.1 psi for at least 5 minutes with
29、out leakage. 3.15 Pull. When tested in accordance with 4.5.2.9, each interior roadway C! ponton shall be capable of withstanding a tensile load of 483,000 pounds for a structural failure anywhere within the ponton. time period of 5 minutes without evidence of permanent deformation or J t 3.16 Reliab
30、ility. When tested in accordance with the test plan appearing in 4.5.2.13, an individual type I or type II bay shall possess the following mission specified reliabilities: a. Type I bridge bays (interior bays), shall exceed acceptance criterion based on an upper test value of 20 Mean Deployment Cycl
31、es Between Failure (MDCBF) and a lower test value of 16 MDCBF. based on an upper test value of 14 MDCBF and a lower test value of 10 MDCBF. b. Type II bridge bays (ramp bays), shall exceed acceptance criterion 3.17 Maintainability. The interior bay and ramp bay shall have maintenance requirements of
32、 not more than 0.435 maintenance man-hours per launch and not more than 0.893 maintenance man-hours per launch, respectively. All active maintenance man-hours required (scheduled and unscheduled) are included in the calculation. Man-hours for repair of replaced components and scheduled before-and-af
33、ter operation checks are excluded. be established prior to the start of any testing. A maintenance schedule shall 3.18 Tiedown provisions. The tiedown provisions shall conform to MIL-STD-209, class 2 or 3, type IV equipment. The tiedown provisions shall satisfactorily complete the pull testing as sp
34、ecified without weld failure, permanent deformation, cracking, loosening, or breaking of the provision or its connecting structural components. 3.19 Slinging provisions. The slinging provisions shall conform to MIL-STD-209, class 1 or 3, type IV. The provisions shall enable the complete bridge bay t
35、o be lifted in the normal operating position. shall be located so that not less than one inch clearance is maintained between slings and all exterior parts and shall be fastened to members which will withstand stresses in the amount and directionof pull specified for the provisions without weld fail
36、ure, permanent deformation, cracking, loosening or breaking of the provision or its connecting structural components. provisions may also be used as tiedown provisions when such provisions meet The provisions Slinging 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
37、ense from IHS-,-,-MIL-B-52734C 54 m 9999906 O4887b8 7 m the requirements specified in 3.18. All slinging/tiedown provisions shall be labeled “LIFT“ , “TIEDOWN“ or “LIFT TIEDOWN“, as appropriate , in 1- inch (2.54 cm) high letters. 3.20 Interchangeability. All parts, components and assemblies having
38、the same identification number shall be functionally and dimensionally interchangeable. Interchangeability is defined as two or more parts (components and assemblies) possessing such functional and physical characteristics as to be equivalent in performance and durability, and capable of being excha
39、nged one for the other without alteration of themselves or of adjoining parts (components and assemblies), except for built-in adjustment, and without selection for fit or performance. 3.21 Specification-control items. Prior to using any specification-control item other than a suggested source item,
40、 the contractor shall furnish to the contracting officer evidence that the item conforms to all requirements on the applicable drawing. The contractor is responsible for performing all inspections and tests on specification or source control items if not performed by the vendor. specification contro
41、l item after approval of the first article without prior approval by the contracting officer. No change shall be made to any source or 3.22 Tvpe I. interior bay. The type I bays shall conform to top assembly drawing, TA13218E4002. 3.23 Type II. ramp bav. The type II bays shall conform to top assembl
42、y drawing, TA13218E4005. 3.24 Workmanship. 3.-24.1 Castings. All casting used on the bridge bays shall be cleaned of harmful extraneous material, such as sand, dirt, sprues, scale, and flux. Rework shall be limited to procedures which do not reduce strength or affect function. 3.24.2 Steel fabricati
43、on. Metal used in fabrication shall be free from kinks and sharp bends. that will not cause injury to the material. Flame cutting, using tips suitable for the thickness of the steel, may be employed instead of shearing or sawing. controlled means to ensure uniformity of size and shape. taken to avoi
44、d overheating. External surfaces shall be free from burrs, sharp edges, and corners, except when sharp edges or corners are required or where they are not detrimental to safety. The straightening of material shall be done by methods Corners shall be square and true. All bends shall be made with Prec
45、autions shall be Heated steel shall be allowed to cool slowly. 3.24.3 Aluminum fabrication. Before any work or layout is done, aluminum Straightening shall be done by methods that will not shall be straightened. result in injury to the metal. fabrication to avoid scratching or damage to edges. free
46、from lamination, kinks, bends, scratches or winds. All bends shall be made to a radius which will not cause cracking or undue stress in the extreme outer fibers. Except for those of a minor nature, bends shall be made with Care shall be used in handling aluminum during Finished members shall be 9 Pr
47、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-52734C 54 9999906 0488769 9 metal dies or fixtures to insure uniformity of size and shape. Sharp instruments shall not be used for making bend lines. Aluminum 3/8 inch thick and over shall be cut by
48、 routing or sawing. Aluminum under 3/8 inch thick may be cut by shearing. 3.24.4 Welding. Unless otherwise specified on the end product drawings, welding shall be done in accordance with the requirements of this specification. Prior to the fabrication of any weldment, the contractor shall prepare an
49、d submit to the contracting officer for approval, an isometric or perspective drawing showing the location of each joint and the joint welding procedures to cover all welding, including a general outline for the repair of base material and welded joints. These procedures shall also address the proposed method of surface preparation prior to welding. The procedures shall be qualified in accordance with the ASME Boiler and Pressure Vessel Code, Section IX, exc
