1、._ . I- -. . _ i -. MIL-T-82371 ACTD) 22 March 1971 SUPERSEDING MIL-T-82371 (TD) - 15 March 1968 MILITARY SPECIFICATION , TRAINING AID; DISPLAY PANEL, “M“ TYPE BOILER Training Device Center, Department of the Navy. This specification has been approved by the Naval - 1. SCOPE 1.1 This specification c
2、overs a panel-type of training aid to be used to demonstrate the principles of boi ler operation and show the arrangement of the main parts of an IM“ type boiler, used for generating superheated steam. .Center, as Device 29CC8B for Navy procurement (see 6.2). 2. APPLICABLE DOCUMENTS invitation for b
3、ids or request for proposal , form a part of this speci- fication to the extent specified herein: 1.1.1 This item has been designated, by the Naval Training Device 2.1 The following documents of the issue in effect on the date of I SPECIFICATIONS Federal W-C-596 - PPP-B-601 PPP-B-621 Mi 1 i tary MIL
4、-A-8625 MIL-P-I 16 MIL-L-10547 Connector, P1 ug , Electrical ; Connector, Receptacle, Electrical Boxes , Wood, Cleated-Plywood Boxes, Wood, Nailed and Lock-corner Anodic Coatings, For Aluminum and Al umi num Al 1 oys Preservati on : Method of Liners, Case and Sheet, Overwrap, Water-Vaporproof or Wat
5、erproof, Fl exi bl e FSC 6910 n Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-8237LA b9 m 777970b 0907928 5 W MIL-T-8237lpD) MI L-S-687 2 Sol deri ng Process, General Specification for . -. ;- -. MIL-T-23991 STANDARDS Mi 1 i tary Trai ni ng D
6、evi ces, Mi 1 i tary; General Speci fi cation for I MIL-STD-129 MIL-STD-143 Specifications and Standards; Order Marking for Shipment and Storage of Precedence for the Selection of (Copies of specifications, standards, drauings, an publications required by suppliers in connection with specific procur
7、ement functions should be obtained from the procuring activity or as directed by the Contracting Officer-.) 3. REQUIREMENTS and as specified in 3.1.1 through 3.1.5.1. transparency, optical clarity, and reststance to heat, shock and abrasion so as to perform in the training aid without visible imperf
8、ections or deteriora- tion. . 3.1 Materi al s. - Materi al used shall be in accordance wi th MIL-T-23991 3.1.1 Plastics.- Plastics used shall be acrylic, or a plastic of equal 3.7 .I .l Cements.- Cements or solvents for joining plastic components shall be those cements recommended by the manufacture
9、r of the plastics and tested by the contractor as suitable to meet the construction and performance requirements of this speci fi cati on. 3.1.1.2 C6enting.- Cemented plastic joints shall be free of air bubbles and stress crazing and shall have the transparency of the original plastic throughout the
10、 joint. The contact surface of the component to be cemented shall be thoroughly softened by means of a solvent, so that a soft layer or cushion is produced on that surface and subsequent uniting and hardening will effect a strong homogeneous bond. require. speci fi c written approval of the procuri
11、ng acti vi ty for each speci f i c vari ance for paint finishes. Wood shall be properly seasoned and free from checks, splits, and warp. Bonding by capi 11 ary attraction .shall 1 3.1.2 . Wood.- Wood shall be selected grades of hardwood lumber, suitable 3.1.2.1 Plywood.- Plywood shall be a minimum o
12、f five plies, or solid- core hardwood, both surfaces to be of. hardwood, all plies to be free of spaces or checks and joined. by waterproof glue. . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-M1L-T-82371A 67 m 7777906 oq07927 7 J I - _ - - - -
13、MIL-T-82371 (TD) 3.1,2.2 Glue.- Glue used shall not be adversely affected by moisture, 3.1.3 Hardboard.- Hardboard shall be of the tempered variety, smooth 1 acquer or pa3 nt . on both sides, hard surfaced and moisture resistant for a paint finish. U. S. Gypsum “Durontl or material equivalent in str
14、ength, rigidity and . smoothness of surface is acceptable. 3.1.4 Metals.- Metals shall be aluminum (type 6061) or be corrosion- resistant in accordance with corrosion-resistant metals requirements . . of MIL-T-23991. _ 3.1.4.1 All aluminum parts shall be anodized in accordance with 3.1.5 Paints.- Pa
15、ints used on metal surfaces shall be exterior 1 acquers 3.1.5.1 the acrylic surface. to ensure a reliable and permanent bond. 3.1.6 Written approval of the Procuring Contracting Officer shall be required for the selection of materials and parts from Standards and Speci- fications of MIL-STD-743, Gro
16、ups II, III and IV in accordance with non- standard materials and parts requirements of MIL-T-23991, MIL-A-8625. - Paints used on acrylic surfaces shall be compatible with - : . : .- : .- .C - . .- - I 3,2 Design.- The design of the training aid shall consist of a display panel , suitable for instru
17、cting students in the arrangement, heat balance and nomenclature of an M-type boiler for the generation of superheated steam. of heat in the boiler, a threeydimensional reduced scale stylized mockup of a section of the boiler, and a photograph showing a rendered perspective section through. the oper
18、ati onal boi 1 er. . 3.2.1 The display panel shall show a bar type diagram of the utilization 3.2.2 Power su 1 - The training aid shall operate from an external power source + of I 5 volts, 60 Hz. 3.2,2.1 The training aid shall be provided with a 20-foot, 3-wire. cable with plugs on each end, confor
19、ming to W-C-596, a cable receptacle, a main switch with red indicator light, and main 115-volt fusing. ,Stowage provisions for this cable shall be made on the inside of one of the rear doors of the training aid. 3.2.2.2 The lighting system of the display panel shall be powered from a 24 volts source
20、 supplied by a built-in step-down transformer. The 24-volt system shall be separately fused. 3.2.2.3 All wiring shall be identified by a color or number code. All wiring shall be neatly bundled and supported. A wiring diagram, enclosed in clear plastic by a pressure and heat sealing process, shall b
21、e attached to the inside of one of the rear doors of the training aid. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-82371 A(TD) .- 1- i 3.3 Reliability.- Reliability of operation shall be a prime consideration in the design and manufacture o
22、f the training afd. The design shall bfi such as to result in reduced requ-irements for adjustments and alinement, and low frequency of failure, while providing for simp1 ified maintenance. Replacement of parts shall be made easy, and accessibility for making adjustments or alinements or both shall
23、be provided. the training aid shall be constructed such that no fixed part, assemblies or subassemblies shall bind or become undesirably free, Degradation . shall not be caused in the mechanical or electrical performance stipulated for the training aid because of shipment, normal handling, or storag
24、e. The training aid shall withstand 5 hours use per week in a classroom for : a period of 5 years. the construction shall be in accordance with processes requirements In addition, 3.4 Construction.- Except as specified .in 3.4.1 of this specification, f MIL-T-23991. 3.4.1 Sol deri ng . - Sol dered c
25、onnections s ha1 1 conform to MIL-S-6872. 3.5 Details of-components.- The training aid, M-type boiler, shall .consist of the following major components: . (a) Display panel (3.5.1). (b) Support stand (3.5.2) . (c) Dust cover (3.5.3) (d) Maintenance parts, (3.5.4). . t 3.5.1 Dis la anel.- The display
26、 panel shall consist of aplywood panel approximate y 96 x 42 inches, mounted in a wood frame. The panel shall be covered with 1/8 tempered hardboard smooth on both sides. The panel shall contain three interrelated displays: a bar graph, a boiler pckup and a sectional view through the IM-type” boiler
27、. -=F- .I .i - %: i -. . 3.5.1.4 View of boiler.- A photograph of a rendered view through - . - *. : 3.5.1.4.1 Flush mounted indicator lighk shall be located in appropriate * -. 3.5.2 Support stand.- A support stand shall be provided. .- . I - 3.5.3 Dust cover.- A dust cover of gray, 16-ounce vinyl
28、coated nylon, equal to .the tensile, tear and flame resstance characteristics of Amor-Tite, shall be pruvided to protect the training aid when not in use. The covering and material used in the construction of the dust cover shall be compatible with all finishes of the training aid so that no migrati
29、ng solvents will adversely affect any part of the training aid or cover. The dust cover shall be permanently fastened on top of the panel framing and shall have snap fasteners or equal * at the lower edge. A secure temporary storage on top of the panel framing shall be provided for the dust cover. .
30、 - 3.5.3.1 The dust cover shall have a clear section of flexible i plastic at the location of master switch and indicator light. 3.2.2.1). (see ;. L Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-82371 A(TD) 3.5.4 Maintenance parts.- Maintenan
31、ce parts shall be furnished as part of this training aid consisting of two each of all lamps and fuses and 20 snap-in lamp sockets used in this device. packaged in separate, properly 1 abel ed plastic boxes. shall be provided in the hack of the panel, accessable through the rear panel doors. 3.6 Col
32、or and finish.- Colors of acrylic and-of painted sections shall identify the different components and sections of the boiler by contrasting colors. These items shall be Storage space 3.7 Nameplate or product markings . - Namepl ates or product markings shall be as specified by the procuring activity
33、 and in accordance with contract requirements (see 6.2). - -. 3.8 Workmanshi .- The training aid shall be constructed and finished with particu + ar attention given to neatness and thoroughness in the machining of fittings, grinding, painting and machine screw assemblage. 3,8.1 Cleanup.- Units shall
34、 be thoroughly cleaned of loose metal chips and other foreign material. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified ,herei
35、n. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set
36、forth in the speci- fication where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. .- a .I .: ,. e 4.2 Classification of inspection.- Inspections to be performed are classified as follows: (a) in-process inspection (b) Qual i ty conformance i
37、nspecti on. 4.2.1 In-process inspection.- In-process inspection shall include such visual, electrical, and mechanical examinations and testing of materials, sub-assembl ies, parts , and accessories (including purchased standard items) during the manufacturing process as may be necessary to assure co
38、nformance to all the requirements of this specification. .- 4.2.2 Quality conformance inspection.- The quality conformance inspection shall consist of a preproduction inspection and an inspection of the production units. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without
39、license from IHS-,-,-MIL-T-82371 A(TD) . -. . . -, I:$ 4 .: i 4.2.2.1 A preproduction inspection shall be conducted on a preproauction unit and shall consist of all the examinations and tests specified in 4.3 and 4.4. 4.2.2.2 Production units shall be inspected to the extent necessary to maintain qu
40、al i ty control and conformance to the Gvernment-approved preproduc- tion unit. 4.3 Examinations.- Examinations shall be performed to verify conformance to the fol 1 owi ng requi rements : (a) Materi al s - (b) Construction (c) Details of components (d) Dimensions (e) Color and finish (f) Namepl ate
41、s and product markings (9) Morkmanshi p . . (h) Preparation for delivery. t 4.4 Tests.- Each training aid shall be subjected to functional tests covering mossi ble demonstrations required by the design requirements. 5. PREPARATION FOR DELIVERY 5.1 Preservation and packaging.- Preservation and packag
42、ing shall be ,Level A or C, as specified by the procuring activity. I 5,l.l Level A.- For Level A, each training aid shall be preserved and packaged for mechani cal and physical protection in accordance with MIL-P- 116, Method III, 5.1.2 Level C.- For Level C, preservation and packaging shall confor
43、m to 5.2 Packing.- Packing shall be Level A or C, as specified by the the manufacturers commercial practice. . .z procuring activity. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L. .L. y.ciQ i- MIL-T-8237LA 69 = 7777706 0407734 O = MIL-T-82371
44、A(TD) 5.2.1 Level A.- Units packaged in accordance with 5.1.1 shall be packed in exterior containers coriforming to PPP-B-621 Class 2, or PPP-B-601 Styles A or B, with steel banding. The gross weight shall not exceed the weight 1 imitations of the shipping container. shipping container shall be line
45、d with a waterproof moisture barrier sealed with adhesive or tape to effect water resiitance in accordance with MIL-L-10547. A case liner shall not be required where the package(s) and package dunnage have been treated to resist water. 5.2,2 Level C.- Units packaged as specified in 5.1.2 shall be pa
46、cked. in containers which will ensure acceptance by common carrier and safe delivery at destination. Shipping containers shall comply with comnon carrier rules and regulations as applicable to the mode of transportation. be marked in accordance with MIL-STD-129. Each exteri or . 5.3 Marking.- Interi
47、or packages and exterior shipping containers shall r 6. NOTES 6.1 Intended use.- The training aid, display panel, “M“ type boiler is intended for class room instruction to familiarize Navy personnel with the basic characteristics and construction of an “M“ type boiler. 6.2 Ordering data.- Procuremen
48、t .documents should specify the following: Title, number and date of this specification Procuring activity designation (see 1 .l .l) Nameplate or product markings (see 3.7) Selection of appl-icable levels of preservation, packaging and packing (see 5.1 and 5.2). - will be furnished upon written requ
49、est to the procuring activity. 6.3 Definitions.- Except as indicated in 6.3.1 and 6.3.2, definitions 6.3.1 Preproduction unit.- An item furnished nder production contracts for the purpose of determining compliance with requirements of the speci fi - cation already established and accepted. It shall be representative of: production units though not necessarily made with production line jigs, fixtures and methods. pr
