1、MIL-H-22881E(SH) 5 Mav 1995 SUPERSEDING 13 October 1971 (See 6.12) MIL-H-22881D(SHIPS) MILITARY SPECIFICATION HEATER SYSTEMS, WATER, STEAM HEATED NON-STORAGE TYPE This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Departme
2、nts and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification describes quick recovery, steam water heaters as a complete system. This specification ensures that all system components are compatible and properly integrated with regard to size, function, and performance. The h
3、eater systems comply with system integration requirements, performance, endurance, safety test procedures, shock and vibration, and standardization for installation on U.S. Naval Surface ships. 1.2 Classification. Heaters are of the following classes, as specified (see 6.2): Classes : Class A - Pers
4、onnel use, 125 degrees Fahrenheit (OF) (example: showers Class B - Non-personnel use, 160F (example: grease intercept hoods Class C - Non-personnel use, 180F (example: laundry and scullery), and lavatories). and pot sanitizing sinks). 1.2.1 Temuerature rating. The temperature rating of heater system
5、s provided in accordance with this specification shall be 125“F, 160“F, and 180F for Class A, B and C respectively. These ratings are synonymous with the class designation throughout. I Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improvin
6、g this document should be addressed to: Commander, SEA 03R42, Naval Sea Systems Command, 2531 Jefferson Davis Hwy, Arlington, VA 22242-5160 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. MSC N/A FSC 4520 IS
7、TRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-H-2288LE 9999906 L999b3b 518 W MIL-H-22881E(SH) 1.2.2 Capacity. The capacity of heater systems provided in accordance
8、with this specification shall be rated based on the amount of outlet water that can be generated :it rated temperature assuming a 40F inlet water temperature. Capacity ratings shall be in gallons per minute (gai/min). Ratings shall be in multiples of 5 gal/min. 1.3 Terms. The following describes ter
9、ms used in this specification a. “Heater“ and “heater system“ are used synonymously within this specifi- cation to mean the complete assembly of heat exchanger, control, monitoring, and miscellaneous equipment supplied. b. “Load“ refers to the demand for flow of outlet water. Full load cor.dition is
10、 when heater is required to deliver the rated capacity. 2. APPLICABLE DOCUMENTS 2.1 Go-iernment documents. 2.1.1 Specifications. sta dards. and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, t
11、he issues of these documents are those listed in the issue of the Depzrtment of Defense Indes of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPEC I FICAT IONS FEDERAL WW-S- 2739 WW-T-696 PPP-F- 320 YILITARY MIL-S-901 MIL-E-917 MIL- F- 1183 MIL-
12、S - 1222 MIL-S -4040 MIL-P-15024 MIL-P-15024/5 - MIL-1-17244 - MIL-E-17555 - Strainers, Sediment: Pipeline, Water, Air, Gas, Oil, or Steam. Traps, Steam. Fiberboard; Corrugated and Solid, Sheet Stock (Con- tainer Grade), and Cut Shapes. Shock Tests, H.I. (High-Impact) Shipboard Machinery, Electric P
13、ower Equipment, Basic Requirements (Naval Fittings, Pipe, Cast Bronze, Silver-Brazing, General Studs, Bolts, Hex Cap Screws, Socket Head Cap Screws Solenoid, Electrical, General Specification for. Plates, Tags, and Bands for Identification of Equip- Plates, Identification. Indicators, Temperature, D
14、irect-Reading, Bimetallic, (3 and 5 Inch Dial). Electronic and Electrical Equipment, Accessories, and Provisioned Items (Repair Parts): Packaging of. Equipment and Systems, Requirements for. Shipboard Use). Specification for. and Nuts. ment. 2 Provided by IHSNot for ResaleNo reproduction or networki
15、ng permitted without license from IHS-,-,-MIL-H-22881E = 9999906 1997637 454 MIL-H-22881E(SH) MILITARY (Continued) MIL-G-18997 - MIL-L-19140 - MIL-V-19772 - MIL- F- 20042 - MIL-T-24270 - MIL-G-24696 - STANDARDS MILITARY MIL-STD-167-1 - MIL-STD-278 - MIL-STD-454 - MIL-STD-461 - MIL-STD-769 - MIL-STD-
16、889 - MIL-STD- 1399, - Section 300 MIL-STD- 1686 - DOD-STD-2169 - MTL-STD-45662 - Gauge, Pressure, Dial Indicating. Lumber and Plywood, Fire-Retardant Treated. Valves, Temperature Regulating, Automatic, Naval Flanges, Pipe and Bulkhead, Bronze (Silver Brazing). Thermowells for Thermometers and Elect
17、rical Temper- Gasket, Sheet, Non-Asbestos. Shipboard. ature Sensors General Specification for. Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type II - Internally Excited). Welding and Casting Standard. Standard General Requirements for Electronic Equip- Requirements for th
18、e Control of Electromagnetic Thermal Insulation Requirements for Machinery and Dissimilar Metals. Interface Standard for Shipboard Systems ment. Interference Emissions and Susceptibility. Pipins. Section 300 Electric Power, Alternating Current. (Metric ) Electroscstic Discharge Control Program for P
19、rotec- tion of Electrical and Electronic Parts, Assemblies and Equipment (Excluding Electrically Initiated Esplosive Devices), (Metric) High Altitude Electromagnetic Pulse Environment. Calibration System Requirements. HANDBOOKS MILITARY MIL-HDBK-263 - Electrostatic Discharge Control Handbook for Pro
20、- tection of Electrical and Electronic Parts, Assem- blies and Equipment (Excluding Electrically Initi- ated Esplosive Devices). (Metric) (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk,
21、BLDG. 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 specified, the issues are those
22、 cited in the solicitation. PUBLICATIONS 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-H-228LE W 9999Ob Lb38 390 MIL-H-22881E(SH) NAVAL SEA SYSTEMS COMMAND (NAVSEA) 0900-LP-001-7000 - Fabrication and Inspection of Brazed Piping Systems, (Ap
23、plication for copies should be addressed to the Standardization Documents Order Desk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, P-A 19111-5094.) 2.2 Non-Government publications. The followicg document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the i
24、ssues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited ir. the solicitation (see 6.2). AMERICAN NATIONAL STANDARDS INSTITUTE
25、 (USI) Z 21.22 - Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems. (DoD adopted). (Application for copies should be addressed tc the American National Srandards Institute, 11 West 42nd Street, 13th Floor, New York, NY 10036.) AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME
26、) B 16.5 - Pipe Flanges EZd Flanged Fittings. Vessel Code, Section IV O Boiler and Pressure - Rules for Conszruction of Heating Boilers. Appiicdcioii tor copie5 should be addressed to rhe American Society of Mechanic - Engineers, 345 East 47th Street, New York, NY 10017.) .AMERICAN SOCIETY FOR TESTI
27、NG AND MATERIALS (ASTM) A 36 - Standard Specification for Structural Steel. (DoD adopted) A 216 - Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service. (DoD adopted) A 516 - Standard Specification for Pressure Vessel Plates, Carbon Steel, for M
28、oderate- and Lower-Temperature Service. (DoD adopted) (Application for copies should be addressed tc the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 13103.) (Non-Government standards and other pub1icatior.s are normally available from the These documents also may b
29、e organizations that prepare or distribute the documexts. available in or through libraries or other informational services.) 2.3 Order of Precedence. In the event of a conflict between the text of this document and the references cited herein, the text cf this document takes precedence. *:o: liiiig
30、 iii riis docuiiii.iit, howe-:rr, supersedes applicable laws and regulations unless a specific exemption has been obtained. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall
31、be subjected to first article inspection (see 6.5) as specified in 4.3, 3.2 Materials. The materials that shall be used in manufacturing the heaters are listed in table I. This table is not restrictive and materials of equal or better service may be proposed, providing approval has been granted for
32、the use of any alternate materials (see 6.8). Material compatibility shall be in accordance with MIL-STD- 889, TABLE 1. Steam water heater system material list. Part Water side of system (parts in con- tact with water) escept coils, coil manifolds, and non-metallic elements (see below) All parcs on
33、steam side of heater (in contact with steam or condensate ex- cept coils and coil manifolds (see below) Gasket . sheet O-rings and other non-metallic elements Bolting Coils aiid coil manifolds Mat er ia1 Corrosion resistant steel Copper-nickel alloy Copper Bronze Corrosion resistant steel Carbon ste
34、el Copper-nickel alloy Copper Bronz e Flexible graphite Viton Approved elastomers Alloy steel Stainless steel nickel-copper alloy Corrosion resistant steel Copper-nickel alloy Copper Bronze spec if i ca t i onL/ UNS C70600 UNS C71500 ASTM A 36 ASTM A 216 ASTM A 516 -GR 55 UNS C70600 UNS C71500 MIL-G
35、-24696 MIL-S-1222 grades B7, 2H, 304, 316, 400 UNS C70600 UNS C71500 L/ Specifications for materials shall be in accordance with ASME BPVC Section IV. Specifications are noted herein only where ASME BPVC Section IV is silent or less stringent. 5 Provided by IHSNot for ResaleNo reproduction or networ
36、king permitted without license from IHS-,-,-MIL-H-22881E 9999906 L99b40 T49 W MIL-H- 22881E( SH) . 3.2.1 Corrosion protection 3.2.1.1 Corrosion-resisting materials. Corrosion-resisting steel, copper, bronze, copper-nickel, and copper-nickel alloys as specified herein are considered corrosion-resisti
37、ng materials. Where corrosion-resistant steel is used, it shall be 300 series stainless steel. Corrosion-resisting steel, when fabricated by any method that tends to reduce corrosion-resistant properties, shall be normalized to restore those properties before being used in the assembly of any unit.
38、3.2.1.2 Non-corrosion-resisting materials. Parts other than corrosion-resisting materials shall be protected against corrosion by the use of chemicals, electrolytic processes, plating, or paints and enamels. 3.2.1.3 Hardware. Self-tapping screws with machine-screw threads may be used in the cabinet
39、assembly. Sheet-metal screws with sheet-metal threads shall not be permitted. 3.2.1.G Recovered mazirials. Unless otherwise specified herein, all equipment, material, and articles incorporated in the products covered by this specification shall be new and may be fabricated using materials produced f
40、rom recovered materials to the masimum estent practicable without jeopardizing the intended use. The term “recovered materials“ means materials which have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials. None of the
41、 above shall be interpreted to mean that the use of used or rebuilt products is allowed under this specification unless otherwise specifically specified. 3.3 Construction. 3.3.1 General requirements. The steam water heater system shall be a complete system for field assembly or pre-assembly in which
42、 all components and materials are coiiipatible and properly integrated with regard to size, function, and performance (see 3.9 and 6.3). The heaters shall be the quick recovery type utilizing steam as the heat source on either the shell or tube side. In addition, the heater shall heat or discharge w
43、ater at the recommended temperature and capacity upon demand. Heater systems shall have good accessibility to all internal and external parts for ease of Serviceability and cleaning. This requirement shall prohibit the location of inlet and outlet lines and auxiliary components from obstructing flan
44、ge end connections and other field removable parts. For example, the heat exchanger steam and water connections shall be accessible when installed on shipboard to permit both ease of inspection and removal. cleaning, or repair of the following: coil assemblies, cover plates, shell, shell liners, cou
45、plings, and so forth. Auxiliary water heater system components shall be accessible to permit ease of inspection, tool maneuverability, and removal and/or repair of these components See figure 1 for a typical Class A steam water heater system. The system shall include all components defined in system
46、 envelopes on figures 1 and 2. The equipment shall reflect good serviceability as specified in 3.6.13.5. See figure 2 for a typical Class B or C steam water heater system. 3.4 Reliability requirements. Each heater system shall have an operating life of 100,000 hours. The water heater systems shall h
47、ave a mean time between failures (MTBF) of 10,000 hours of operation, mean time to repair (MTTR) of 12 hours (see 4.6.8). mean time between corrective maintenance (MTBCM) of 1,000 hours, and an 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-
48、22LE 9 9999706 L999b4L 985 W operational availability (Ao) of 0.92 (see 6.3). The MTBF shall be derived by analytical or empirical means. 3.5 Temperature adiustments. Class A, class B, and class C heaters shall have an adjustable outlet water temperature range of 100 to 125“F, 120 to 160“F, and 140
49、to 180F respectively. The outlet temperature shall be maintained automatically to within plus or minus 5F of any setting within the adjustable temperature range, and any operating conditions within the limits specified in 3.7.1. 3.5.1 Anti-tamperinE device. When specified (see 6.2) for class A heaters, the contractor shall provide an approved (see 6.8) anti-tampering device to prevent unauthorized personnel from adjusting the temperature cont
