1、MIL-M-22525B (SHIPS) SUPERSEDING MIL-L-22525A (SHIPS) 15 May 1972 31 May 1967 (See 6.5) MILITARY SPECIFICATION MINE FIELD MARKER, BF MK 3 MOD O, NM (HIGH INTENSITY FLASHING BEACON LIGHT) 1. SCOPE 1.1 intended for use on minefield marker (reference) buoys as an aid to navigation. It is designed to be
2、 as compact as possible and yet to be rugged enough to operate under adverse environmental conditions. The light consists of two basic components, an electronic flash assembly and a battery pack which are interconnected by a power cable. This specification covers a nonmagnetic high intensity flashin
3、g light primarily 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of the specification to the extent specified herein. # SPECIFICATIONS MILITARY MIL-B-18 - Batteries, Dry. MIL-P-116 - Preservation, Methods
4、 of. MIL-1-17214 - Indicator, Permeability: LOW-MU (GO-NO-GO). MIL-E-17555 - Electronic and Electrical Equipment, Accessories And MIL-1-45208 - Inspection System Requirements. Repair Parts; Packaging and Packing of. # STANDARDS MILITARY MIL-STD-129 - Marking for Shipment and Storage. # DRAWINGS MILI
5、TARY 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302 , 211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302#211 403-430
6、2,211 403-4302,211 403-4302,211 (7300) (7301) (7302) (7303) (7304) (7305 1 (7306) (7307) (7308) (7310) (7311) (7312) (7314) (7315) (7316) (7317) (7318) (7319) (7320) (7321) (7322) (7323) (7324) (7325) (73091 Light Assembly, Minefield Marker, Flashing. Schematic Drawing, Light, Minefield Marker, Flas
7、hing. Battery Container Assy., Light, Minefield Marker, Battery Tube, Minefield Marker. Contact, Minefield Marker. Contact, Minefield Marker. Spacer Tube, Light, Minefield Marker, Flashing. Pad, Minefield Marker. Cap Assy., Light, Minefield Marker, Flashing. cap, Minefield Marker. Handle, Minefield
8、Marker. Pipe, Minefield Marker. Cable Assy., Battery Container, Light, Minefield Rod, Minefield Marker. Electronic Assy., Minefield Marker, Flashing. Printed Circuit Board Master, Minefield Marker. Designations Markings, Minefield Marker, Flashing. P/C Board Machining, Minefield Marker, Flashing. Li
9、ght Tube, Minefield Marker. Bracket, Minefield Marker. Clip, Minefield Marker. Guard, Light, Minefield Marker, Flashing. Washer, Insulating, Minefield Marker. Tubing, Mask, Minefield Marker. Cable Assy., Electronic Container, Light, Minefield Flashing. Marker, Flashing. Marker, Flashing. FSC 6210 I
10、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-Pi-22525B 62 M 979790b 0103bb I MIL-M-2 2 5 2 5B (SHIPS) MILITARY (Contd) 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-4302,211 403-430
11、2,211 403-4302,211 403-4302,211 (7326 (7327 (7328 (7329 (7330 (7331 (7332 (7334 (7335 (7336 (7337 (7338 Specifications Converter-XMFR, Minefield Marker. Clamp Assy., Light, Minefield Marker, Flashing. Latch Assy., Minefield Marker. Latch , Minefield Marker. Strap, Latch, Minefield Marker. Lockplate,
12、 Light, Minefield Marker, Flashing. Dee Ring Minefield Marker. Clamp Sub-Assy., Minefield Marker. L. H. Clamp Segment, Minefield Marker. R. H. Clamp Segment, Minefield Marker. Light Tube Assy., Light, Minefield Marker, Flashing. Tube Socket, Minefield Marker. PUBLICATIONS NAVSHLPC 0981-012-1000 - Hi
13、gh Intensity Flashing Beacon Light, Minefield Marker, 0981-012-2000 - High Intensity Flashing Beacon Light, Minefield Marker, BF MK 3 MOD O - Operation. BF MK 3 MOD O - Maintenance. (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific pro
14、curement functions should be obtained from the procuring activity or as directed by the contracting officer.) 3. REQUIREMENTS 3.1 Sample for first article inspection. The first five lights produced under the contract shall betestedas specified in 4.2 (see 6.2). 3.2 Construction. The flashing light s
15、hall be constructed in accordance with the drawings listed in 2.1. 3.2.1 Batteries. Batteries shall be furnished with the lights but shall be packaged separately (see section 5). 3.2.2 Materials. Materials and parts used to construct the light shall be those speci- fied on the drawings listed in 2.1
16、 or direct equivalents thereto. cations where the function of the component requires the use of magnetic material, all components shall have a magnetic permeability not exceeding 2.0 after fabrication, when test- ed with a permeability indicator in accordance with 4.5.7. 3.2.3 Interchangeability. Ev
17、ery part of each light shall be completely interchangeable, mechanically and electrically, with the corresponding part of every other light. 3.3 Performance. Lights shall be capable of meeting the performance requirements specified in 3.3.1 through 3.3.6 to insure that the electronic and other compo
18、nents affecting performance and watertight integrity of the lights and the assembly of these components are as specified on the drawings (see 2.1). The manual selectorall provide an alternate initial flash rate of 60 +15 flashes per minute with a lower flash intensity. that the mode cannot be inadve
19、rtently changed. The light sensitive switch shall turn the light on auto- matically atdusk or when thexmination level drops below 1.5 +0.5 foot candles. It shall also turn the light off automatically at dawn, or when the light revel reaches 3 +I foot candles. shall operate- &%&y replacement for at l
20、east nine consecutive days (12 hours on, 12 hours off) at a minimum of 90 flashes per minute in the High Flash Rate Mode. It shall operate in the same environment without battery replacement for at least twelve con- secutive days (12 hours on, 12 hours off) at a minimum of 30 flashes per minute in t
21、he Alternate Flash Rate Mode. Except for those appli- 3.3.1 Flash rate. The basic initial flash rate shall be 110 +5 flashes per minute. The manual selector shall be designed in such a way 3.3.2 Light sensitive switch. 3.3.3 O eratin In a temperature environment of not more than 85OF., the light 3.3
22、.4 O erating temperature. The light shall start at all temperatures from 32 to 11O0F. and shhdjustable to the flash rates specified in 3.3.1. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-U-225258 62 W 77777Ob OLO3bb7.T # # B MIL-M-2 2525B (S
23、HIPS 3.3.5 Submer ence. The light shall be watertight to external water pressures of 10 3.3.6 Visibility. The light shall have an initial visibility range at the high flash pounds per sqd(psi1. rate of at least 8,000 yards when there is an atmospheric light transmission of 70 percent per mile and ba
24、ckground brightness of 0.0001 foot lambert. At the end of the life span specified in 3.3.3, the light shall have a visibility range at the high flash rate of at least 7,200 yards under the same visibility conditions. 3.4 Manuals. When required (see 6.1), manuals (manuscript only), including repro- d
25、ucible art work, shall be prepared in accordance with 3.4 through 3.4.2 containing informa- tion necessary for operation and maintenance of the lights. Parts identification shall be included and shall contain brief descriptive information for basic and repair parts to facilitate identification of th
26、e parts in the assembly, and to permit ordering of replace- ment parts. Graphics used to supplement the descriptive matter contained in the text for parts identification shall consist of photographs or line drawings or both. Color shall not be employed. The manuscript should be identical in organiza
27、tion, format and content to NAVSHIPS 0981-012-1000 and 0981-012-2000 wherever the new manuals agree with the current manuals. the contractodrwwo copies of the manuscript in preliminary form, together with two copies of each photograph or line drawing required to illustrate the text, to the Naval Shi
28、p Engineering Center, SEC 6127, Hyattsville, Maryland 20782 via the cognizant Defense Contract Administration Service (DCAS) and the procuring activity for review. copies of ea-otograph or line drawing, shall be forwarded via the cognizant DCAS and procuring activity to the Naval Ship Engineering Ce
29、nter, SEC 6127, Hyattsviiie, Maryland 20782 for reproduction and distribution. shall each-eled,sing subsurface lettering with the following identifying 3.4.1 Preliminar section. At least 45 days prior to beginning the final manuscript, 3.4.2 Final section. Two copies of the final section, together w
30、ith two reproducible 3.5 Identification marking. The electronic assembly case and the battery container data: (a) “Minefield marker, BF MK 3 MOD O, NM (High Intensity Flashing Beacon Light) . “ (b) Federal stock number. (c) Manufacturers name, (d) Contract number. (e) Month and year of manufacture.
31、3.6 Workmanship. The quality of the workmanship used in the construction of the sha 1 be such that the intent of the specific directions given in the drawings listed 2.1 may be achieved. 4. QUALITY ASSURANCE PROVISIONS light n 4.1 Res onsibilit for ins ection. Unless otherwise specified in the contr
32、act or purchase order, the supplE is zesponsible for the performance of all inspection require- ments as specified herein. 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 specifie
33、d herein, unless disapproved by the Government. The Govern- ment reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. acceptable tohrnment for supplies and s
34、ervices covered by this specification. inspection system shall be in accordance with MIL-1-45208 (see 6.1 and 6.2). Governmen t. 4.1.1 Ins ection system. The supplier shall provide and maintain an inspection system The 4.1.2 Records. Records of all tests shall be kept complete and available to the 4
35、.2 First article ins ection. First article inspection shall consist of the tests # specified -5Zthve successfully passed the first article tests may be submitted for tests as production equipment. 4.3 4.3.1 Lot. For purposes of sampling, a lot shall consist of all lights offered for Sampline foi: gu
36、ality conformance tests. delivery at one time. 3 a ._- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-22525 (SHIPS) 4.3.2 Sam lin for roduction tests. From each lot, a random sample of lights shall be selected di& rth theests specified in 4.4.
37、 Table I - Sampling for production tests. Number of lights Number of lights in lot in sample 1 2 to 8 9 to 15 16 to 25 I 26 to 40 41 to 65 66 to 110 111 to 180 181 to 300 2 3 5 7 10 15 25 35 301 to 500 50 501 to 800 75 801 to 1300 110 4.4 Production tests. Each light selected in accordance with 4.3.
38、2 shall be subjected Any light in the sample containing one or more defects shall be rejected and the to the submergence, fwrate and battery current drain tests specified in 4.5.2, 4.5.3, and 4.5.5. lot represented by the sample shall be subject to rejection. 4.5 TS. 4.5.1 Operating test. Starting o
39、f the first article lights at 32OF. and llOF. opera- 4.5.2 Submergence test. The entire light assembly (electronic flash assembly, battery ting temperatures in each of the flash rates shall be demonstrated as specified in 3.3.4. pack and interconnecting-er cable) shall be submerged in water at a pre
40、ssure of 10 psi for a period of 30 minutes. ,the battery container shall be disassembled and examined for leakage. There shall be no water leakage past any of the seals or in the power cable connectors as a result of this test. # 4.5.3 Flash rate test. The device shall be placed in a darkened room,
41、and the flash rate in flashecernuteshall be determined by averaging the count of the flashes during a 3 minute period. The high flash rate shall have an average of 110 +5 flashes per minute. The flash rate jumper bar shall then be moved to the low flash rate position and the low flash rate shall be
42、determined in the same manner. The low flash rate shall have an average value of 60 2 15 flashes per minute. The housing shall be removed from the electronics section so that the voltageacross tm microfarad capacitor C8, shown on Drawing 403-4302,211(7301) can be monitored during operation of the li
43、ght. The input lead of an oscilloscope, Tetronix Model 516 or equivalent, shall be connected across capacitor C8 while the light is flashing, For the high flash rate and the low flash rate, the voltage wave form observed on the oscilloscope display shall reach the maximum level of 620 + 50 volts pri
44、or to each flash discharge and a minimum level of 20 i 20 volts after each aischarge. 4.5.5 Batter current drain test. The battery current drain shall be measured using a current pro+ Tetronix Mm6m a current probe amplifier, Tetronix Type 131, and a Tetronix Model 516 Oscilloscope or equivalents. Th
45、e average current drain shall not exceed 400 milliamps in the High Flash Rate Mode and 300 milliamps in the low flash rate mode. that the visI6i?1Tt.iqemx ofs.3.6 can be met. This test shall be conducted in a temperature environment of not mare than 85OF over a nine day period The light shall operat
46、e without battery replacement in the High Flash Rate Mode for nine consecutive days (12 hours on, 12 hours off). The flash rate shall not drop to lower than 90 flashes per minute (see 3.3.3). checked with-imndicator conforming to MIL-1-17214 to determine that they meet the magnetic permeability requ
47、irement specified in 3.2.2. After removal from the water the electronic flash assembly and 4.5.4 Flash energy test. # I: 4.5.6 Visibilit and life test. The first article lights shall be tested to determine 4.5.7 Permeabilit test. All applicable components of the light assembly shall be i 4.6 Inspect
48、?: of preyaration.for deliverF The packaging, packing, and marking shall be inspecte orcomp lance wirsection of this document. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-M-21?525B 62 9999906 OL0367L MIL-M-22525B (SHIPS) 5. PREPARATION FOR
49、 DELIVERY # (The preparation for delivery requirements specified herein apply only for direct Government procurements. For the extent of applicability of the preparation for delivery requirements of referenced documents listed in section 2, see 6.5.) # 5.1 Preservation and acka in . Lights shall be packaged by level A or C, as speci- fied (see g.1). The batteries required for each light shall be packaged separately by level A or C, as specified and then shall be placed in the package with the lights.
