1、 INCH-POUND MIL-PRF-44466D 10 October 2006 SUPERSEDING MIL-PRF-44466C 6 September 2006 PERFORMANCE SPECIFICATION HEATER,WATER AND RATION (HWR) This specification is approved for use by all Departments and Agencies of the Department of Defense (DoD). 1. SCOPE 1.1 Scope. This specification covers one
2、type of heater for use by mounted troops that will heat rations, water for beverages and for limited personal hygiene (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents
3、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 documents cited in sections 3 and 4 of this sp
4、ecification, whether or not they are listed. Comments, suggestions or questions on this document should be addressed to US Army Research, Development and Engineering Command, Natick Soldier Center, AMSRD-NSC-CF-S, 15 Kansas St., Natick, MA 01760-5018 or emailed to Robert.Bernazzaninatick.army.mil. S
5、ince contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil AMSC N/A FSC 7310 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-44466D 2.2 Go
6、vernment documents. 2.2.1 Standards. The following standards form part of this document to the extent 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 t
7、hereto, cited in the solicitation (see 6.2). STANDARDS MILITARY MIL-STD-461 - Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment MIL-STD-810 - Environmental Test Methods and Engineering Guidelines (Unless otherwise indicated, copies of the above
8、standards are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094, or the ASSIST Online database at http:/assist.daps.dla.mil). 2.2.2. Government drawings. The following drawing forms part of this document to the extent specified herei
9、n: U. S. Army Soldier and Biological Chemical Command 5-13-6900 Heater, Water and Ration (HWR) 5-13-6901 Power Cord Assembly, Heater, Water, and Ration (HWR) (Copies of drawings are available from the U.S. Army Natick Research, Development and Engineering Center, Natick, MA 01760-5018 ) 2.3 Non-Gove
10、rnment 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 solicitation. Unless otherwise specified, the issues of doc
11、uments not listed in the DoDISS are the issues of the documents cited in the solicitation (see 6.2). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-44466D THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) ASME/ANSI PTC 25.3 - Safety and
12、Relief Valves (Application for copies should be addressed to the American Society of Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, NY 10017, or Online at www.asme.org). NATIONAL FIRE PROTECTION ASSOCIATION (NFPA) Standard No. 70 - National Electrical Code (Applicat
13、ion for copies should be addressed to the National Fire Protection Association, One Battery March Park, Quincy, MA 02269-9101, or Online at www.nfpa.org). NSF INTERNATIONAL Standard No. 2 - Food Service Equipment Standard No. 4 - Commercial Cooking, Rethermalization and Powered Hot Food Holding and
14、Transport Equipment (Application for copies should be addressed to NSF International, 3475 Plymouth Road, P. O. Box 1468, Ann Arbor, MI 48105, or Online at www.nsf.org). UNDERWRITERS LABORATORIES, INC. (UL) Standard 499 - Standard for Safety of Electric Heating Appliances (Application for copies sho
15、uld be addressed to the Underwriters Laboratories Inc., 333 Pfingsten Road, Northbrook, IL 60062-2096, or Online at ). 2.4 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 do
16、cument, however, supersedes applicable laws and regulations unless a specific exemption 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 4.1.1. 3 Provided by IHSNot for ResaleNo reproduction or
17、networking permitted without license from IHS-,-,-MIL-PRF-44466D 3.2 Operating requirements. The Heater, Water and Ration (HWR) shall satisfy the following operating requirements. 3.2.1 Temperature selection settings. The HWR shall have a low temperature setting of 1550F + 50F and a high temperature
18、 setting of 1850F + 50F. 3.2.2 Heating water. The HWR shall be capable of heating water. 3.2.3 Heating rations. The HWR shall be capable of heating 40 ounces of water in the main compartment and 5 Meal, Ready-to-Eat (MRE) entrees. 3.2.4 Capacity. The HWR shall have a minimum capacity of 1 gallon of
19、water in the main compartment. The removable inner container shall have a minimum capacity of 40 fluid ounces and 5 MRE entrees. 3.2.5 Control panel. The control panel shall consist of a low, off, high temperature selection switch, a power use indicator light (green), a heating element operation ind
20、icator light (white), an electric supply receptacle, and a water spigot. 3.2.6 Safety. The HWR shall be safe to operate in accordance with the standards specified herein. 3.2.6.1 Pressure relief. The HWR shall have the capability to relieve pressure buildup within the heating unit. 3.2.6.2 Automatic
21、 shutdown. The HWR shall automatically shut off power when the water level in the main compartment is empty or the internal temperature exceeds 2050F. Following cooldown, the HWR shall be capable of heating water. 3.2.6.3 Spillage. Closure and securing of the HWR lid shall form a watertight seal to
22、prevent spillage. 3.3 Interface and interoperability requirements. The HWR shall satisfy the following interface and interoperability requirements. 3.3.1 Operating current. The HWR shall operate on a 24/28 Volt DC system while drawing a current not less than 10 amps and not greater than 15 amps at 2
23、8 volts. 3.3.2 Low voltage detector. The HWR shall have a low voltage detector which activates the heater off latch if the voltage falls below 20 Volts DC. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-44466D 3.3.3 Dimensions. The unit sh
24、all have overall dimensions no greater than those shown on Drawing No. 5-13-6900. The casing height shall vary in accordance with Type I or Type II vechicle mounting application as shown on Drawing No. 5-13-6900. 3.3.4 Power cord. The power cord as shown on Drawing No. 5-13-6901 shall be designed to
25、 interface with the electric supply receptacle as shown on Drawing No. 5-13-6900. 3.3.5 Electric supply receptacle. The electric supply receptacle, pins and polarizing key location shall be as shown on Drawing No. 5-13-6900. The pin connections shall be Pin A positive, Pin B negative, and Pin C no c
26、onnection. National Stock Number (NSN) 5935-01-191- 4015 or equivalent shall be utilized to meet this requirement. 3.3.6 Mounting studs. The mounting studs shall be permanently attached and threaded, positioned and dimensioned as shown on Drawing No. 5-13-6900. 3.3.7 Food contact zone. The surfaces
27、of the main compartment and inner container shall be nontoxic and resistant to cleaning agents used during current field practice for cleaning cooking utensils. 3.4 Support or ownership requirements. The HWR shall satisfy the following support or ownership requirements. 3.4.1 Reliability. The HWR sh
28、all demonstrate a mean time between essential mission failure (MTBEMF) of at least 640 operational hours at a minimum confidence level of 80%. 3.4.2 Weight. The maximum net weight of the empty HWR shall be 20 pounds. 3.4.3 Maintainability. Routine maintenance and servicing of the HWR shall require o
29、nly standard hand tools. Maintenance and servicing shall be considered in the placement of components and access panels. 3.4.3.1 Electrical wiring. Electrical wiring shall be arranged, supported, and marked to allow identification with the wiring diagram. 3.4.4 Marking. Identification, instruction,
30、and control plates shall be of corrosion-resistant material permanently attached to the outside of the unit. Numbering and lettering shall be legible and permanently inscribed and shall be no less than 1/16 inch in height. All plates shall have a nonreflective surface. 3.4.4.1 Identification plate.
31、The identification plate information shall include the manufacturers name, contract number and date, the Commercial and Government Entity (CAGE) number and the technical manual number, if applicable, (see 6.2 and 6.5). 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without li
32、cense from IHS-,-,-MIL-PRF-44466D 3.4.4.2 Instruction plate. The instruction plate shall contain the following instructions: This system is designed to ONLY HEAT: - Meals, Ready-to-Eat (MRE). - Sealed containers of food. - Drinkable water. This system will NOT cook, boil, or fry foods, and it will N
33、OT disinfect or decontaminate water. The REMOVABLE CONTAINER and HANDLE will be extremely HOT. Use Gloves or other hand protection. Do NOT use removable container for personal hygiene (shaving, washing, etc.) Use only APPROVED cleaning material as defined in the technical manual. 3.4.5 Durability. T
34、he HWR shall remain operable (not leak or malfunction) after being subjected to simulated field handling conditions. 3.5 Environmental requirements. The heating units shall satisfy the following environmental requirements. 3.5.1 Ambient temperature. The HWR shall start and operate in ambient tempera
35、tures ranging from -250F to +1400F. 3.5.2 Storage. The HWR shall remain operable after storage at temperatures ranging from -600F to +160oF. 3.5.3 Humidity. The HWR shall operate at a temperature of 1400F and 94% + 4% humidity. 3.5.4 Heat retention. The HWR shall retain temperature for a minimum of
36、3 hours after shutdown. 3.5.5 Electromagnetic compatibility. When specified (see 6.2), the HWR shall not exceed the emission and susceptibility limits for ground applications. 3.5.6 Vibration. The HWR shall remain operable after being subjected to vibration testing. 6 Provided by IHSNot for ResaleNo
37、 reproduction or networking permitted without license from IHS-,-,-MIL-PRF-44466D 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.1.1) b. Conformance inspection (see 4.1.2) 4.1.1 First artic
38、le inspection. When a first article inspection is required (see 3.1 and 6.2), a sample shall be examined for all the verifications listed in table I. 4.1.2 Conformance inspection. Conformance inspections of the HWR shall consist of all the verifications listed in table I, except the verification tes
39、ting specified for the requirements of paragraphs 3.2.1 through 3.2.3, 3.2.6.2 and 3.2.6.3, 3.4.1, 3.4.5 and 3.5.1 through 3.5.6. shall not be done. Sampling for this inspection shall be as specified in the contract or order (see 6.2). 4.2 Order of verification. The verifications listed in table I c
40、an be performed in any sequence, but the verifications for table II shall be performed in the sequence specified. TABLE I. Verification methods Title Requirement Verification Title Requirement Verification OPERATING REQUIREMENTS 3.2 4.3.2 SUPPORT OR OWNERSHIP REQUIREMENTS 3.4 4.3.4 Temperature selec
41、tion settings 3.2.1 4.3.2.1 Reliability 3.4.1 4.3.4.1 Heating water 3.2.2 4.3.2.2 Weight 3.4.2 4.3.4.2 Heating rations 3.2.3 4.3.2.3 Maintainability 3.4.3 4.3.4.3 Capacity 3.2.4 4.3.2.4 Electrical wiring 3.4.3.1 4.3.4.4 Control panel 3.2.5 4.3.2.5 Marking 3.4.4 4.3.4.5 Safety 3.2.6 4.3.2.6 Identific
42、ation plate 3.4.4.1 4.3.4.5.1 Pressure relief 3.2.6.1 4.3.2.7 Instruction plate 3.4.4.2 4.3.4.5.2 Automatic shutdown 3.2.6.2 4.3.2.8 Durability 3.4.5 4.3.4.6 Spillage 3.2.6.3 4.3.2.9 ENVIRONMENTAL REQUIREMENTS 3.5 4.3.5 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without l
43、icense from IHS-,-,-MIL-PRF-44466D TABLE I. Verification methods contd Title Requirement Verification Title Requirement VerificationINTERFACE AND INTEROPERABILITY REQUIREMENTS 3.3 4.3.3 Ambient temperature (low) 3.5.1 4.3.5.1 Operating current 3.3.1 4.3.3.1 Ambient temperature (high) 3.5.1 4.3.5.2 L
44、ow voltage detector 3.3.2 4.3.3.2 Storage 3.5.2 4.3.5.3 Dimensions 3.3.3 4.3.3.3 Humidity 3.5.3 4.3.5.4 Power cord 3.3.4 4.3.3.4 Heat retention 3.5.4 4.3.5.5 Electric supply receptacle 3.3.5 4.3.3.5 Electromagnetic compatibility 3.5.5 4.3.5.6 Mounting studs 3.3.6 4.3.3.6 Vibration 3.5.6 4.3.5.7 Food
45、 contact zone 3.3.7 4.3.3.7 TABLE II. Verification test sequence Test Sequence Requirement Paragraph Characteristic Verification Paragraph 1 3.3.1 Operating current 4.3.3.1 2 3.2.2 Heating water 4.3.2.2 3 3.5.1 Ambient temperature 4.3.5.1/4.3.5.2 4 3.2.3 Heating rations 4.3.2.3 5 3.2.1 Temperature s
46、election settings 4.3.2.1 6 3.5.2 Storage 4.3.5.3 7 3.5.4 Heat retention 4.3.5.5 8 3.5.3 Humidity 4.3.5.4 9 3.4.5 Durability 4.3.4.6 10 3.2.6.3 Spillage 4.3.2.9 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-44466D TABLE II. Verification t
47、est sequence contd Test Sequence Requirement Paragraph Characteristic Verification Paragraph 11 3.5.5 Electromagnetic compatibility 4.3.5.6 12 3.2.6.2 Automatic shutdown 4.3.2.8 13 3.4.1 Reliability 4.3.4.1 14 3.5.6 Vibration 4.3.5.7 4.3 Verification methods. Verification methods can include visual
48、examination, measurement, testing, simulation, modeling, engineering evaluation, component properties analysis, certification and similarity to previously-approved or previously-qualified designs. 4.3.1 Verification alternatives. The contractor may propose alternative test methods, techniques, or eq
49、uipment, including the application of statistical process control, tool control, or cost-effective sampling procedures to verify performance (see 6.4). 4.3.2 Operating requirements verification. Complete each verification in section 4.3.2. 4.3.2.1 Temperature selection settings verification. The HWR shall be connected to a 24/28 Volt DC
