1、- r MIL-R-2q037A (9) bb H 977970b 0423319 5 i -s MIL-R-24037A AMENDMENT 4 21 December 1984 SUPERSEDING AMENDMENT 3 22 February 1980 MI L ITARY SPEC1 F ICAT ION .e RADIACMETERS, QUARTZ-FIBER SELF-INDICATING GENERAL SPECIFICATION This amendment forms a part of Military Specification MIL-R-24037A, date
2、d 12 December 1969, Page 2 and is approved for use by all Departments and Agencies of the Department of Defense, * 3.1, Delete and substitute: “3.1 First article. When specified, a sample shall be subjected to first article inspection (see 4.3 and 6.2).“. Page 3 3.7.4, line 2: Add “Plastic end caps
3、which have been tested and specifically approved by the procuring activity may be used on the barrel of the radiacmeter. the metal barrel, shall be permanently attached to the barrel, and shall not interfere with reading or charging of the radiacmeter. not exceed 1.7 centimeters (cm) (0.6875 (11/16)
4、 inch (in.) in diameter.“. Plastic end caps shall fit over Radiacmeter barrel with plastic end caps attached shall 3.7.4.1, 1 ine 4: Delete “PP-4726( )/PD“ and substitute “PP-4276( )/PD“. 3.7.6, first sentence: Delete and substitute “Unless otherwise specified (see 6.1.1), the radiacmeters shall be
5、provided with a double jaw alligator type metal clip with a coil spring spot welded (two points) or riveted (one or two rivets) to a collar no less than 0.64 cm (0.25 (1/4) in.) in width. the procuring activity prior to use. A prototype clip assembly for clips which are attached by rivets shall be a
6、pproved by Page 4 3.8.1, line 3: Delete “250 volts“ and substitute “190 volts“; line 4: Delete “200 volts“ and substitute “250 volts“. Add the fa1 lowing new paragraph: “3.8.7 Fiber and wall conduction. The fiber and the walls of the ionization chainber of the The testing shall be conducted in accor
7、dance with 4.6.26.“. radiacmeter shall be sufficiently conducting so that the fiber will maintain its position within a t.5 percent of full scale when the polarity of charge on the fiber is rapidly changed from positive to negative or negative to positive. Page 5 3.9, Item (c) : Delete “50,000“ and
8、substitute “100,000“; Item (e) : Delete “4.6.21“ and subs t it ut e “416.201r, 3.10, Item (b): Delete “virbation“ and substitute “vibration“. FSC 6665 1 of 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-R-2q037A (4) bb 777970b 0423320 L MIL-R
9、-24037A AMENDMEkT 4 Page 6 * 4.2, Item (a): Delete and substitute: “(a) First article inspection (see 4.3)“, * 4.2, Item (c): Delete. * 4.3, Delete and substitute: spection is required on each type dosimeter specified in the detail specifications. Twenty (20) dosimeters of a given type constitute a
10、sample for first article inspection. spection shall consist of all examination and testing necessary to determine complimce with the requirements of this specification. First article inspection shall include the tests specified in TABLE I, and the detail specifications.“. * TABLE I: Delete “tttle“ a
11、nd substitute “First article inspection.“. “4.3 First article inspection. Unless otherwise specified (see 6.1,1), first article in- First article in- TABLE I, add the following at end of table: I I Fiber and wall conduction I 3,8.7 I 4.6.26 I * 4.3.1 and 4.3.2: Delete in their entirety. Page 7 * 4.3
12、,2.1, 4.3.2.2, 4.3.2.3, 4.3.2.4, 4.4, 4.4.1, and 4.4.2: Delete in thei+ entirety, Page 8 4.5,1.1,4, first sentence: Delete and substi-tute “A sample number of radiacmeters in accordance with TABLE II shall be selected from the end of each months production and shall be subjected to each of the sampl
13、es respective Group C, subgroup tests specified in 4.5.1.4,“. TABLE III, add the following at the end of Sub-group II: II 1 Fiber and wall conduction I 3.8.7 1 4.6.26 I I I. Page 11 4.6.11, line 2: Delete “(kV)“ and substitute Il(keV)“. Page 12 4.6.24, line 1: Delete llKiethlyll and substitute “Keit
14、hleyl. Add the following new paragraph: “4.6.26 Fiber and wall conduction test. The radixmeter shall be tested to ensure con- formance to the requirements of 3.8.7 with a dosimeter charger having the following character- i st ics : pedestal with a maximum delay time of less than 0.2 second. precisio
15、n of k2.0 VDC. reversed voltage output shall be within I1.0 VDC. The radiacmeter shall be charged with a positive polarity to provide a fiber iinage setting of 10 percent of the full scale reading. period of 24 hours. 10 percent of full scale with a positive polarity, closed at this setting, the pol
16、arity switch shall be changed from a positive to a negative polarity. within +5 percent of full scale. full scale setting within 15 percent of full scale shall not exceed 1.3 second after the polariiy switch is changed. shall do so within 2.0 seconds after the polarity is changed.“. a. A switch whic
17、h can reverse the polarity of the DC output voltage to the charging b. A continuously variable voltage output over a range of O to f250 VDC with a c. For a given voltage output o either polarity, when the polarity is changed, the The radiacmeter shall be stored at ambient conditions for a At the end
18、 of the 24-hour storage period, the radiacmeter shall be reset at While the radiacmeter charging switch is The fiber image of the radiacmeter shall return to the 10 percent of full scale setting The time it takes the fiber iinage to return to the 10 percent of The fiber iinage shall come to rest in
19、a fixed position withiii these limits and 2 of 3 c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-c -; MIL-R-24037A AMENDMENT 4 Page 13 * 6.1.1, after “(g)“, add the followiag new item: “(h) ?tdmber of first article samples to be submitted if other
20、than specified in 4.3“. * 6.1.2, Item (b), delete and Substitute: “(b) First article test date (see 4.3).“. Page 14 * 6.2 and 6.3, Delete and substitute: the appropryate provisions of 52.209-3 of the Federa Acquisition Regulations. should be a first production item. type. ments, regarding arrangemen
21、ts for examinations) tests, and approval of the first article.“. The margins of this amendment are marked with an asterisk to indicate where changes (additions, modifications, corrections, deletions) from the previous amendment were made. This was done as a convenience only and the Government assume
22、s no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. “6.2 First article. When a first
23、article is rewired it should be tested and approved under The first article The first article should consist of 20 dosimeters of a given The contracting officer should include specific instructions in all procurement instru- Custodians: Army - ER Navy - EC Review act iv it ies: Navy - SH, MC, CG Preparing activity: (Project No. 6665-0474) NAVY -EC 3 of 3 11.S. RiVERNflENT PRINTING OFFICE: ITBS - 505-078120808 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
