DLA A-A-59482-1999 LANTERN ELECTRIC HAND SAFETY [Superseded DLA MIL-L-18937 D CANC NOTICE 1 DLA MIL-L-18937 D DLA MIL-L-18937 C DLA MIL-L-18937 B INT AMD 1 DLA MIL-L-18937 B]《安全电池灯.pdf
《DLA A-A-59482-1999 LANTERN ELECTRIC HAND SAFETY [Superseded DLA MIL-L-18937 D CANC NOTICE 1 DLA MIL-L-18937 D DLA MIL-L-18937 C DLA MIL-L-18937 B INT AMD 1 DLA MIL-L-18937 B]《安全电池灯.pdf》由会员分享,可在线阅读,更多相关《DLA A-A-59482-1999 LANTERN ELECTRIC HAND SAFETY [Superseded DLA MIL-L-18937 D CANC NOTICE 1 DLA MIL-L-18937 D DLA MIL-L-18937 C DLA MIL-L-18937 B INT AMD 1 DLA MIL-L-18937 B]《安全电池灯.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、 INCH-POUND A-A-59482 21 December 1999 SUPERSEDING 13 May 1976 MIL-L-18937D COMMERCIAL ITEM DESCRIPTION LANTERN, ELECTRIC, HAND, SAFETY The General Services Administration has authorized the use of this commercial item description as a replacement for MIL-L- 18937D for all federal agencies. 1. SCOPE
2、. This commercial item description (CID) covers hand-portable, battery-powered safety lanterns to be used for illumination in potentially explosive environments. 2. SALIENT CHARACTERISTICS 2.1 Performance. The lantern shall conform to the performance requirements of the American National Standards I
3、nstitute (ANSIWL) Standard 783, “Electric Flashlights and Lanterns for Use in Hazardous (Classified) Locations“. 2.1.1 Environment The lantern shall operate safely in hazardous environments as defined by the National Fire Protection Association (NFPA) Standard 70, “National Electrical Code Handbook“
4、, for Class I, Division I, Groups C and D (-1) or Group D (-2) only (see 6.1). 2.1.2 Center beam. The specified lamp and reflector shall project a beam of light with its maximum luminous intensity at the approximate center of the beam. When tested in a totally darkened environment with a fully charg
5、ed battery, the center beam of maximum intensity shall be 10 to 20 inches in diameter at a distance of 10 feet from the lantern lens. 2.1.3 Luminous intensity Beam candlepower shall be determined by averaging the peak reading of the center beam with four peripheral readings at 90-degree intervals ta
6、ken at the approximate midpoint between the center beam radius and the outer edge of the full beam. The average beam illumination measured by a calibrated photometer at a distance of 1 O feet with the beam axis perpendicular to the photometer sensor shall be at least 300 foot-candles. The beam lumin
7、ous Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any other data which may improve this document should be sent to: Defense Supply Center Richmond (DSCR), ATTN: DSCR-VBD, 8000 Jefferson Davis Highway, Richmond, VA 23297-56 1 O. AMSC NIA FSC 6230 DISTRIBUTION ST
8、ATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59482 intensity (I) in candlepower shall be calculated using the formula I +ED2, where E is the average photometer reading in foot-
9、candles and D is the distance in feet from the photometer to the lantern lens. 2.1.4 Beam direction Light beam direction shall be vertically adjustable through an arc ranging from -10 degrees to +90 degrees, relative to the lantern case. 2.1.5 Power consumption. Replenishment with a new battery shal
10、l sustain continuous lantern operation at rated beam candlepower for at least four hours. 2.2 Components. Lantern components shall include a case, lamp housing, switch, carrying handle, and any other necessary parts. The assembled lantern weight (including battery) shall not exceed 10 pounds. 2.2.1
11、Case. The lantern case and all exposed parts shall be non-sparking, non-magnetic, and able to withstand heat up to 230 OF without deformation. Plastic parts shall also withstand heat up to 230 OF in accordance with the American Society for Testing and Materials (ASTM) Standard D648, “Deflection Temp
12、erature Under Flexural Load“. Contact between dissimilar metals shall be avoided to minimize galvanic corrosion. The case structure shall support 20 pounds of weight without deformation and the lantern shall remain capable of producing rated illumination after being subjected to one drop on each of
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