1、A-23- 62 JINCH-POUNDI MIL-S-24603A(SH) 5 October 1988 SUPERSEDING 22 May 1980 (See 6.8) MIL-S-24603(SH) MILITARY SPECIFICATION SEWAGE COMMINUTOR, AND ASSOCIATED MOTOR, CONTROLLER, AND DRIVE MECHANISM FOR SHIPBOARD USE This specification is approved for use by the Naval Sea Systems Command, Departmen
2、t of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers sewage comminutors for Naval surface ship sewage treatment systems and sewage collection, holding, and transfer systems. Included are the requirements f
3、or the comminutor motor, motor controller, and motor-comminutor drive mechanism. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a part of this specification to the extent specified herein. Unless otherwise specifi
4、ed, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation. SPECIFICATIONS FEDERAL QQ - C - 3 90 - Copper Alloy Castings (Including Cast Bar). QQ- S - 7 6 6 - Steel
5、 Plates, Sheets, and Strip-Corrosion TT - P - 645 - Primer, Paint Zinc Chromate, Alkyd Type. UU-P-268 - Paper, Kraft, Wrapping. Resisting. I Beneficial comments (recommendation, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Comman
6、der, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. / I THIS DOCUMENT CONTAINS /”/ PAGES. c AMSC N/A FSC 4630 DISTRIBUT
7、ION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FEDERAL PPP - C - 850 PPP-c-1120 MILITARY MIL- P - 11 6 MIL- S - 901 MIL-C-2212 MIL-R-6230 MIL-P-15024 MIL-P-15024/5 MIL-E-15090
8、MIL-P-16789 MIL-M-17060 MIL-F-20042 MIL-R-20092 MIL-P-26514 STANDARDS FEDERAL FED-STD-595 MILITARY MIL-STD-167-1 MIL-STD-278 MIL-STD-740 MIL-STD-777 . - Cushioning Material, Polystyrene Expanded, - Cushioning Material, Uncompressed Bound Fiber for Resilient (For Packaging Uses). Packaging. - Preserv
9、ation, Methods of. - Shock Tests, H.I. (High-Impact); Shipboard Machinery, Equipment and Systems, Requirements for, Associated Switching Devices. - Controllers, Electric Motor A.C. or D.C., and - Rubber, Cellular, Chemically Blown. - Plates, Tags and Bands for Identification of - Plates, Identiicati
10、on. - Enamel, Equipment, Light-Gray (Formula No. 111). - Pumps (Including Prime Movers and Support Items); - Motors, 60-Hertz, Alternating Current, Integral- - Flanges, Pipe and Bulkhead, Bronze (Silver - Rubber or Plastic Sheets and Assembled and Molded - Polyurethane Foam, Rigid or Flexible, For E
11、quipment. Packaging of. Horsepower, Shipboard Use. Brazing). Shapes, Synthetic Foam or Sponge, Open Cell. Packaging. O - Colors. - Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type II - Internally Excited). - Welding and Casting Standard. - Airborne and Structureborne Noi
12、se Measurements and - Schedule of Piping, Valves, Fittings, and Acceptance Criteria of Shipboard Equipment. Associated Piping Components for Naval Surface Ships, MIL-STD-1472 - Human Engineering Design Criteria For Military Systems, Equipment and Facilities. 2.1.2 Other Government Dublication. The f
13、ollowing other Government publfcation forms a part of this specification to the extent specified herein. Unless otherwise specified, the issues shall be those in effect on the date of the solicitation. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
14、,-PUBLICATION NAVAL SEA SYSTEMS COMMAND (NAVSEA) 0900-LP-001-7000 - Fabrication and Inspection of Brazed Piping System. (Copies of specifications, standards, and publications required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or
15、 as directed by the contracting activity.) 2.2 Other rmblications. The following documents form a part of this specification to the extent specified herein. issues of the documents which are DoD adopted shall be those listed in the issue of the DoDISS specified in the solicitation. Unless otherwise
16、specified, the issues of documents not listed in the DoDISS shall be the issue of the nongovern- ment documents which is current on the date of the solicitation. Unless otherwise specified, the AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) B 463 - Standard Specification for UNS N08020, UNS N0802
17、6, and UNS NO8024 Alloy Plate, Sheet, and Strip. (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) SOCIETY OF AUTOMOTIVE ENGINEERS, INC. (SAE) AMs 5596 - Alloy Sheet, Strip, and Plate, Corrosion and Heat Resistan
18、t 52.5Ni - 19Cr - 3.OMo - 5.1(Cb+Ta) - 0.90Ti - 0.50A1 - 18Fc Consumable Electrode or Vacuum Induction Melted 1750F (955C) Solution Heat Treated. (Application for copies should be addressed to the Society of Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale, PA 15096.) (Nongovernment st
19、andards 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 s
20、pecification and the references cited herein (except for associated detail specifications, specification sheets or MS standards), the text of this specifi- cation shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemptio
21、n has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspection (see 4.3 and 6.3). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I D 3.2 Material, E
22、quipment shall be suitable for salt water sewage service in the marine environment. Materials selected shall be corrosion resistant and galvanically compatible with respect to formation of electrolytic couples. Material requirements for the sewage piping systems with which the comminutor shall be co
23、mpatible shall be as specified in MIL-STD-777. 3.2.1 Cutters, Cutters shall be Inconel 718, cold rolled age-hardened (Rockwell C-40-45) in accordance with AMs 5596. 3.2.2 Cutter spacers. Cutter spacers shall be CRES 304 in accordance with QQ-S-766. 3.2.3 Cutter shaft material. Cutter shaft material
24、shall be CRES 20-CB3 in accordance with ASTM B 463. 3.2.4 Comminutor housinP and end-closures. Comminutor housing and end- closures shall be tin bronze in accordance with QQ-C-390, alloy C90300. 3,2,5 Other Darts. Other parts which are in contact with the salt water- sewage shall be CRES 304 except
25、by pass screens shall be CRES 316 in accordance With QQ-S-766 3.2.6 Mechanical seal materials, Opposing seal surfaces shall be of tungsten carbide against carbon, or tungsten carbide against tungsten carbide. 3.2.7 Recovered materials, Unless otherwise specified herein, all equipment, material, and
26、articles incorporated in the products covered by this specification shall be new and may be fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. The term “recovered materials“ means materials which have been collected o
27、r recovered from solid waste and reprocessed to become a source of raw material, as opposed to virgin raw materials. interpreted to mean that the use of used or rebuilt products is allowed under this specification unless otherwise specifically specified, None of the above shall be 3.3 General. confi
28、vuration. Comminutors and the associated motors, controllers, and drive mechanisms shall operate in the shipboard sea water-sewage environment and shall grind or macerate all solids normally found in the ships sewage and wastewater drains to particle sizes of 3/8 inch maximum particle diameter and 1
29、 inch maximum length or smaller. mechanism, and motor shall withstand impacts and loadings resulting from jamming by hard objects, such as nuts and bolts, without serious damage or performance degradation. The comminutor cutters, drive 3.3.1 Cutters. Comminutor cutters shall cut, shear, or grind all
30、 solids normally found in sewage systems to 3/8 inch maximum particle diameter, and 1 inch maximurn length , including towels, rags, paper, glass, hair, bones, organic material, plastics, and thin metal objects. influent to the comminutor. the cutters but: shall not obstruct the flow path in a manne
31、r that will cause blockage or stoppage of flow, 3.3.2 Screens. Screens or strainers shall not be used to condition the Screens or strainers may be used to direct flow to 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-24603A 46 W 797770b 0214
32、b15 5 W 3.3.3 Case intearitv. The comminutor casing housing the cutters or grinders shall be liquid, gas, and odor tight under all normal operating conditions and at internal pressures ranging from minus 1 foot to plus 50 feet of water. 3.3.4 Sewage processing. The comminutor shall process raw, untr
33、eated sewage with 1 percent (by weight) solids content at flow rates resulting from a static pressure head of 25 feet of water at the comminutor inlet. Under these conditions, the pressure drop across the comminutor shall not exceed 1 foot of water. 3.3.5 Jamming. Comminutor cutters, cutter drive me
34、chanisms, and drive motor shall sustain a minimum of 30 consecutive jam cycles incurred by heavy metallic objects without the need for repair of the equipment (see 3.9.1, 3.9.4, 4.6.7, 4.6.8, and 4.6.10). 3.3.6 Shock resistance. Comminutor and associated equipment shall withstand high-impact shock a
35、s specified in MIL-S-901 for grade B equipment. 9 3.3.7 Duty cycle. Comminutor and associated equipment shall be capable of both continuous and intermittent start-stop operation under both sustained maximum flow and zero flow conditions. 3.3.8 Mechanical shaft seals. Mechanical shaft seals shall be
36、provided to prevent leakage of sewage from the comminutor (see 3.2.6). 3.4 Physical requirements. 3.4.1 Safety. operation, there shall be no safety hazards (electrical, personnel, fire, and so forth) (see 4.5.2). With the comminutor unit fully assembled and installed for 3.4.2 Standardized flange mo
37、unting. For standardization and interchange- ability purposes, the in-line mounting flange-to-flange dimensions of the comminutor casing shall be 10 inches for 4- and 6-inch (nominal influent-effluent pipe size) comminutor and 13-1/2 inches for 8-inch (nominal influent-effluent pipe size) comminutor
38、. Mounting flanges of the comminutor shall be 150-pound flanges in accordance with MIL-F-20042. 3.4.3 Dimensional limits, weight limits. and motor horsepower requirements. Physical size and weight of the comminutor unit (comminutor, motor, and drive mechanism), exclusive of the motor controller, sha
39、ll not exceed the limits set forth in table I. Minimum motor horsepowers for 4-, 6-, and 8-inch (nominal influent-effluent pipe size) comminutor shall be as- specified in table I. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE I. Physical size
40、 and weight and horsepower for 4-. 6-. and 8-inch comminutors. Comminutor (nominal inflow pipe size) (Inches) 4 6 8 Maximum weight (less motor controller) (Pounds) Maximum unit enve lope dimens ions (less motor controller) (Inches) 200 325 600 44 x 23 x 13 44 x 23 x 13 44 x 23 x 13 Minimum motor hor
41、sepower 3 3 3 3.4.4 Size. Comminutor size denotes the nominal pipe size of the influent Sizes and quantities provided shall be as specified (see and effluent lines. 6.2.1). 3.4.5 Mounting. The comminutor unit shall mount solely by the influent and effluent line flanges without degradation of perform
42、ance, 3.4.6 Inlet and discharge line diameters. Comminutor inlet and discharge bore size shall be the same as tHe inside diameter of the connected soil (sewage) piping flanges. Detailed flange dimensions shall be as specified in MIL-F-20042. Nominal pipe size shall be the same as the comminutor size
43、. 3.5 Motor, The comminutor drive motor shall conform to MIL-M-17060. 3.5.1. Motor horsepower. Minimum standard motor horsepower ratings for specified comminutor size shall be as set forth in table I. 3.5,2 Motor characteristics. Unless otherwise specified (see 6.2.1), motor characteristics shall be
44、 as follows: Power and voltage - 3-phase, 440-volt, 60-hertz (Hz) Enclosure I) Totally enclosed fan cooled (TEFC). Classification - Service C, as specified in MIL-M-17060. Duty - Continuous. Bearing type - Ball. Ambient temperature - 122 degrees Fahrenheit (OF) (50 degrees Temperature rise - 158F (7
45、0C), as specified in MIL-M-17060. Design - B, as specified in MIL-M-17060. Shock - Grade B, as specified in MIL-S-901. Insulation - B, F, or H, as Specified in MIL-M-17060. Revolutions per minute - Not to exceed 1800. Celsius (OC), 3.5.3 Other motor characteristics. Requirements for chock resistance
46、 shall be as specified in 3.3.6. comminutor design. Motor design and type shall be matched to the 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. a O O MIL-S-24b03A 4b = 77777Ob 0234637 7 3.6 Motor controller. An across-the-line continuous duty m
47、otor controller shall. be provided in accordance with MIL-C-2212, and shall be compatible with the motor specified in 3.5 and the intended service. 3.6.1 Enclosure. The degree of enclosure for the motor controller provided shall be dripproof (45 degrees). 3.6.2 Control functions. Motor start, stop,
48、and reset functions shall be provided by pushbutton or rotary selector type manual switches located in the controller cover. rotation of the comminutor to facilitate the freeing of jammed objects shall also be provided. A switch which will momentarily reverse the direction of 3.6.3 Protection. The m
49、otor controller shall be equipped to provide both overload and low-voltage protection for the motor. shut down the comminutor in the event of a comminutor jam before damaging stress levels are reached in the comminutor mechanism. The motor controller shall 3.6.4 Indicating lights. A pilot light shall be mounted in the motor controller cover to indicate when the comminutor is running. shall be in accordance with MIL-STD-1472. Color of light 3.6.5 Alarm circui
