NAVY MIL-T-82049 C-1984 TABLES HOT FOOD ELECTRIC MOBILE《移动电力食物保温桌》.pdf

1、MIL-T-82049C 10 April 1984 SUPERSEDING - MIL-T-820493 9 January 1978 MILITARY SPEC IF IC ATION TABLES, HOT FOOD, ELECTRIC, MOBILE This specification is approved for use by all Departments and Agencies of the Department of Defense. L. SCOPE 1.1 Scope. This specification covers mobile, electrically he

2、ated, food service tables having multiple compartments .for accommodating specified sizes of food serving pans. The tables are designed for nesting within counter- front bays of types A and B service lines in standard subsistence buildings. 1.2 Classification. - - The food service tables shall be of

3、 the following type and sizes, as specified (see 6.2): * Type B - With drain. Size 3 - Three food-storage compartments for three 12 inch by Size 4 - Four food-storage compartments for four 12 inch by Size 5 - Five food-storage compartments for five 12 inch by Size 6 - Six food-storage compartments f

4、or six 12 inch by 20-inch pans. 20-inch pans. 20-inch pans. 20-inch pans. 2. APPLICABLE DOCUMENTS 2.1 Government documents. -I_- 2.1.1 Specifications standards and handbooks. Unless otherwise -,-,-,-,- specified, the following specifications, standards, and handbooks of the issue listed in that issu

5、e of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation, form a part of this specification to the extent specified herein. 1Benef icial comments crecomendations , additions, delet ion3 and-any pertinent I Idata which may be of use in improving this

6、 document should be addressed to: 1 - -Y-_I_ -I _I_ ICommanding Officer (Code 1561, Naval Construction Battalion Center, Port IHueneme, CA 93043, by using the Jb?.L- - -I-.-11-1-1-I-II_-I- _1- I I etter. 1 self-addressed Standardization Document 1Improvement Proposal (DD Form 1426.) appearing at the

7、 end of this document or I THIS bBGuMENlr CONTAWS k PAM$. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-T-82047C 3- 777790642675 4 m- the juncture of the sides and back thus formed shall be welded. The exposed weld surface shall be ground smoo

8、th and polished. - The shelf edge facing the operator shall be rolled out and down to form a full 180“, 1-1/2 inch diameter section, and shall be vertically beneath the cutting board edge. and tested as specified in 4.6.4. Hot food tables shall not tip when the dish shelf is uniformly loaded . 3.7.1

9、0 - Casters. conforming in design and mounting to type II (swivel), class B or class C, 5-inch wheel diameter, style C casters of FF-C-77. Casters and caster mounting areas shall show no evidence of damage, deformation, or failure when tested as specified in 4.6.3. Four swivel casters shall be furni

10、shed. Casters shall be provided with foot-operated brakes or locking devices and with latch pins to make the casters nonswiveling during insertion and removal from counterfront bays. Casters shall be so positioned as not to interfere at any point of their turning radius with the legs of pylons of th

11、e counterfront. Each food service table shall be mounted on four casters 3.7.11 Cord. The power cord shall comply to UL 197, and shall be type SO or STO, 6-feet long, with ground wire. Unless otherwise specified (see 6.21, the cord shall have a locking type receptacle on one end for connecting to th

12、e table and a nonlocking type plug on the other end. shall conform to NEMA WD 1 or WD 5. plug shall be furnished instead of the nonlocking type. the plug shall be as specified (see 6.2) from table II. A corrosion resistant hook or steel hood shall be attached inside one end panel to act as a cord ca

13、ddy and shall he near the serving side of the table. - The plug and receptacle When specified (see 6.21, a locking type The configuration of Table II. Plug. configuration. - 4 6 - 30P L8 - 20P 5 6 - 30P L8 - 20P 6 No plug (directly wired) L8 - 30P 208V, 220V, 230V ratings 48V rating -_L_-_I_-_- b. F

14、or three phase hot food tables: Item size NEMA plug . NEMA plug -1_1-_1_11_-1-1-.-_-_11_1 3 L15 - 20P L16 - 20P 4 L15 - 30P L16 - 20P L15 - 30P L16 - 20P L15 - 30P . L16 - 20P 5 6 -_-_-I-.-Ic-l-1-1_-I-L-y- * 3.7.12 Electric .- system. Conductors, switches, junction boxes, conductor enclosures, and o

15、ther components of the electrical system shall conform to the requirements of UL 197. Table internal wiring, including a green, insulated grounding conductor grounded to table frame and surface, shall terminate in a flush, polarized, loeking type plug to accommodate the supply cord. The plug shall b

16、e a grounding type conforming to NEMA WD 1. The power cord shall be so positioned t the operators side of the table to permit the adjacent equipment 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T- 82049C to be set flush against the table wit

17、hout interference with the plug or cord system and so that the table can be rolled flush against a counter without interference with the plug or cord system. 3.7.13 Insulation. The thermal conductivity, k, shall be not more than 0.27 BritisK-Ehermal units per hour per square feet, OF, temperature di

18、fference (inch of thickness) when insulation having a thickness of 1 inch is used and the mean insulation temperature is 14O0F. higher k factor may be used, in which case the thickness of the insulation shall be sufficient for the heat transmission coefficient, U, not to exceed 0.27 British thermal

19、units per hour per square feet, OF, temperature difference. Insulation for the compartment bottom may be independent of or attached to the bottom, but in either case shall be removable. Insulation with a 3.8 Fungus resistance. When specified (see 6.21, electrical components -A- and circuit elements,

20、 including terminal and circuit connections, shall be coated with varnish conforming to MIL-V-173, except that: a. Components and elements inherently inert to fungi.or in hermetically sealed enclosures need not be coated. shll not be coated. . b. Current-carrying contact surfaces, such as. relay con

21、tact points, 3.9 Marking for identification. Each cabinet shall be permanently marked with the manufacturers name, tradename, or trademark of such known character as to be readily identifiable with the manufacturer. In addition, such information as required by UL 197 shall also appear on the cabinet

22、. .-I- 3.10 - Technical manual. The contractor shall furnish with each table a technical manual. Manual contents and distribution shall be as specified in the contract (see 6.2). 3.11 Workmanship. 3.11-1 Tolerances. Tolerances and gages for metal fits shall conform to any limitations-specified herei

23、n and in other respects shall meet standards of good commercial practice. within design tolerance limits of good commercial practice. -a- I_ Finished contact and bearing surfaces shall be 3.11.2 Steel fabrication. “he steel used in fabrication shall be free -I- from kinks, sharp bends, and other con

24、ditions which would be deleterious to the finished product. of the steel to a value less than intended by the design. Manufacturing processes shall be done neatly and accurately. controlled means to insure uniformity of size and shape. Manufacturing processes shall not reduce the strength All bends

25、shall be made by 3.11.3 Bolted connections. Bolt holes shall be accurately punched or -_I_- drilled and shall have the burrs removed. Washers or lockwashers shall be provided in accordance with good commercial practice, and all bolts, nuts, and screws shall be tight. 3.11.4 Riveted connections. Rive

26、t holes shall be accurately punched or drilled and shall have the*b,rrs removed. Rivets shall be driven with pressure tools and shall completely fill the holes. Rivet heads, when not 9 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-82047C 73

27、 = 777770b 0242703 T MIL-T-82049C countersunk or lattened, shall be of approved shape and of uniform size for the same diameter of rivet. Rivet heads shall be full, neatly made, concen- tric with the rivet holes, and in full contact with the surface of the member, Pop riveting is not permitted. 3.11

28、.5 Welding. The surfaces of parts to be welded shall be free from oxide, scale, paint, grease, or other foreign matter, Welds shall be, when applicable, continuous, sound, smooth, and free from porosity, ciacks, incomplete fusion, or deformation of material. All scale or flux deposits (when flux is

29、used) shall be removed from the finished welds. Weld penetration shall provide transference of maximum design strss through the base metal juncture. the parent material. stress concentration. applicable code published or recommended by AWS Exposed welds shall be ground and polishedto blend into Fill

30、ets shall be provided where necessary to reduce Welding procedures shall be in accordance with an 3,11.6 Castings. All castings shall be sound and free from patching, misplaced coring, warping, or any other defect which reduces the castings ability to perform its intended function. - 3.11.7 -4 Finis

31、h. All- parts of the food table, covers, pans, and accessories shall be smooth on surfaces and edges, free from rough grind marks, trimming marks, pits, scales, die marks, and other defects. Exposed corrosion- resistant steel shall have No. 4, or better, commercial finish except that the underside o

32、f carving and bottom shelves may have a No. 2R, or better, commercial finish. Spots where zinc coating has been destroyed by welding or fabrication shall be either regalvanized, covered with zinc bearing epoxy, or two coats of weather-resistant aluminum paint. 4. QUALITY ASSURANCE PROVISIONS 4.1 Res

33、ponsibility for inspection, Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. specified in the contract or purchase order, the contractor may use his own or any other facilities suitable

34、 for the performance of the inspection require- ments specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specifi- cation where such inspections are deemed necessary to assure supplies and services conform to pr

35、escribed requirements. Except as otherwise 4.1.1 Component and material inspection. Components and materials shall be inspected in accordance with all the requirements specified herein and in applicable referenced documents. 4.2 Classification of inspections. -I_ The inspection requirements specifie

36、d herein are classified as follows: a. First article inspection (see 4.2.1). b. Quality conformance inspection (see 4.2.2). 4.2.1 - First article inspection. - The first article inspection shall be performed on tables when a first article is required (see 3.2 and 6.4). This inspection shall include

37、the examination of 4.4 and 4.5 and the tests of 4.6. The first article may be either a first production item or a standard 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- o O O MIL-T-82047C 73 = 7777906 0242704 1 MIL-T-82049C production item from

38、 the suppliers current inventory provided the item meets the requirements of the specification and is representative of the design, construction, and manufacturing technique applicable -to the remaining items to be furnished under the contract. 4.2.2 Quality conformance inspection. The quality confo

39、rmance inspection shall include the examination of 4.4 and 4.5. the tests of 4.6.2, and the packaging inspection of 4.7. samples selected in accordance with 4.3. This inspection shall be performed on the 4.3 Sampling. 4.3.1 Inspection lot. All hot food tables of the same size and characteristics off

40、ered to the Government at one time shall be considered a lot for purposes of inspection. 4.3.2 Sampling for examination. A random sample of food service tables shall be selected from each lot in accordance with inspection level II of MIL-STD-105. The Acceptable Quality Level (AQL) shall be 1.5 defec

41、ts per 100 units. 4.3.3 Sampling for tests, A random sample of food service tables shall be selected from each lot in accordance with MIL-STD-105 at inspection level S-4. The AQL shall be based on 4.0 defects per 100 units. 4.4 Examination. The fitst article sample, when required, and each sample se

42、lected in accordance with 4.3.1 shall be examined to verify compliance with this specification. Examination shall be conducted as specified in table IT. TABLE II. Classification of defects. P-P- Class if ication Critical; Major: 10 1 102 103 104 105 106 107 108 109 Defects None de fined . -I- Dimens

43、ions not as specified. Components missing, or not free of sharp edges or corners, open joints, cracks, or crevices. Sheet metal components not the specified corrosion resistant steel or corrosion- resistant steel clad. Heating compartment not corrosion- resistant, or not properly insulated. Heating

44、compartments not seamless drawn as per MIL-W-43896. Table top does not properly accommodate specified pans. Casters not as specified. Electric cord not specified type or grounding conductor missing. Electrical system not in compliance with UL 197. 3.7 3.7.1 3.7.5 3.7.8.2 3.7.10 3.7.11 3.7.12 11 Prov

45、ided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-82047C 73 7777706 0242705 3 W MIL-T-82049C TABLE II. Classification of efects Contd 110 - Insulation not -of the type of conductivity specified. (Values of the k-factor given in recognized handbooks (

46、e.g. ASHRAE Guide and Data Book) for the type of insulation furnished will be accepted as evidence of Identification or instruction plates not . . compliance with the conductivity requirements). 3-7-13 111 112 Technical manual missing, incomplete, illegible, or not as specified. 3.10 113 Workmanship

47、 not as specified. 3.11 properly marked. 3.9 114 Finish not as specified. 3.11.7 Minor: - None defined. - 4.5. Stanaards compl2ance. The contractor shall submit proof of compliance with the requirments of UL 197 NSF No. 2 or NSF Nom 4 in accordance with the provisions of 3.3ele1 and 3-.3.2.1. -4.6 T

48、ests. 4.6.1 Electric heater. The electric heater shall be as specified in 3.7.6. Each heater in each sample shall be tested. Consideration of ambient air movement or similar factors that might affect results is not required for the f all-owirig test procedures: a. ir. - C-. * d. e. f, h. i. Dry method test Conduct the test in a room having an ambient temperature of 80F or less. Test only one well or food compartment at a time. or food compartments shall be inoperative during the tes